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3 years agoMerge remote-tracking branch 'remotes/dgibson/tags/ppc-for-5.1-20200720' into staging
Peter Maydell [Mon, 20 Jul 2020 10:34:10 +0000 (11:34 +0100)]
Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-5.1-20200720' into staging

ppc patch queue 20200720

Here are some assorted fixes for qemu-5.1:
 * SLOF update with improved TPM handling, and fix for possible stack
   overflows on many-vcpu machines
 * Fix for NUMA distances on NVLink2 attached GPU memory nodes
 * Fixes to fail more gracefully on attempting to plug unsupported PCI bridge types
 * Don't allow pnv-psi device to be user created

# gpg: Signature made Mon 20 Jul 2020 06:29:21 BST
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# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>" [full]
# gpg:                 aka "David Gibson (Red Hat) <dgibson@redhat.com>" [full]
# gpg:                 aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>" [full]
# gpg:                 aka "David Gibson (kernel.org) <dwg@kernel.org>" [unknown]
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E  87DC 6C38 CACA 20D9 B392

* remotes/dgibson/tags/ppc-for-5.1-20200720:
  pseries: Update SLOF firmware image
  spapr: Add a new level of NUMA for GPUs
  spapr_pci: Robustify support of PCI bridges
  ppc/pnv: Make PSI device types not user creatable

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
3 years agoMerge remote-tracking branch 'remotes/cminyard/tags/for-qemu-i2c-5' into staging
Peter Maydell [Mon, 20 Jul 2020 10:03:07 +0000 (11:03 +0100)]
Merge remote-tracking branch 'remotes/cminyard/tags/for-qemu-i2c-5' into staging

Minor changes to:

Add an SMBus config entry

Cleanup/simplify/document some I2C interfaces

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# gpg: Good signature from "Corey Minyard <cminyard@mvista.com>" [unknown]
# gpg:                 aka "Corey Minyard <minyard@acm.org>" [unknown]
# gpg:                 aka "Corey Minyard <corey@minyard.net>" [unknown]
# gpg:                 aka "Corey Minyard <minyard@mvista.com>" [unknown]
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* remotes/cminyard/tags/for-qemu-i2c-5:
  hw/i2c: Document the I2C qdev helpers
  hw/i2c: Rename i2c_create_slave() as i2c_slave_create_simple()
  hw/i2c: Rename i2c_realize_and_unref() as i2c_slave_realize_and_unref()
  hw/i2c: Rename i2c_try_create_slave() as i2c_slave_new()
  hw/i2c/aspeed_i2c: Simplify aspeed_i2c_get_bus()
  hw/i2c/Kconfig: Add an entry for the SMBus

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
3 years agoMakefile: Remove config-devices.mak on "make clean"
Peter Maydell [Fri, 17 Jul 2020 15:25:08 +0000 (16:25 +0100)]
Makefile: Remove config-devices.mak on "make clean"

The config-devices.mak files are generated by "make", and so they
should be deleted by "make clean".

(This is different from config-host.mak and config-all-disas.mak,
which are created by "configure" and so only deleted by
"make distclean".)

If we don't delete these files on "make clean", then the build
tree is left in a state where it has the config-devices.mak
file but not the config-devices.mak.d file, and make will not
realize that it needs to rebuild config-devices.mak if, for
instance, hw/sd/Kconfig changes.

NB: config-all-devices.mak is also generated by "make", but we
already remove it on "make clean".

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20200717152508.10272-1-peter.maydell@linaro.org

3 years agopseries: Update SLOF firmware image
Alexey Kardashevskiy [Fri, 17 Jul 2020 01:15:31 +0000 (11:15 +1000)]
pseries: Update SLOF firmware image

This adds tcgbios (this was posted earlier [1] but got lost)
and fixes FDT update at ibm,client-architecture-support
for huge guests.

The full list of changes:

Alexey Kardashevskiy (4):
      make: Define default rule for .c when V=1 or V=2
      version: update to 20200513
      fdt: Avoid recursion when traversing tree
      version: update to 20200717

Gustavo Romero (1):
      board-qemu: Fix comment about SLOF start address

Stefan Berger (6):
      tcgbios: Only write logs for PCRs that are allocated
      tcgbios: Fix the vendorInfoSize to be of type uint8_t
      tcgbios: Add support for SHA3 type of algorithms
      elf: Implement elf_get_file_size to determine size of an ELF image
      tcgbios: Implement tpm_hash_log_extend_event_buffer
      tcgbios: Measure the bootloader file read from disk

[1] https://patchwork.ozlabs.org/project/qemu-devel/patch/20200513024355.121476-1-aik@ozlabs.ru/

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
3 years agospapr: Add a new level of NUMA for GPUs
Reza Arbab [Thu, 16 Jul 2020 22:56:55 +0000 (17:56 -0500)]
spapr: Add a new level of NUMA for GPUs

NUMA nodes corresponding to GPU memory currently have the same
affinity/distance as normal memory nodes. Add a third NUMA associativity
reference point enabling us to give GPU nodes more distance.

This is guest visible information, which shouldn't change under a
running guest across migration between different qemu versions, so make
the change effective only in new (pseries > 5.0) machine types.

Before, `numactl -H` output in a guest with 4 GPUs (nodes 2-5):

node distances:
node   0   1   2   3   4   5
  0:  10  40  40  40  40  40
  1:  40  10  40  40  40  40
  2:  40  40  10  40  40  40
  3:  40  40  40  10  40  40
  4:  40  40  40  40  10  40
  5:  40  40  40  40  40  10

After:

node distances:
node   0   1   2   3   4   5
  0:  10  40  80  80  80  80
  1:  40  10  80  80  80  80
  2:  80  80  10  80  80  80
  3:  80  80  80  10  80  80
  4:  80  80  80  80  10  80
  5:  80  80  80  80  80  10

These are the same distances as on the host, mirroring the change made
to host firmware in skiboot commit f845a648b8cb ("numa/associativity:
Add a new level of NUMA for GPU's").

Signed-off-by: Reza Arbab <arbab@linux.ibm.com>
Message-Id: <20200716225655.24289-1-arbab@linux.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
3 years agospapr_pci: Robustify support of PCI bridges
Greg Kurz [Thu, 9 Jul 2020 17:12:47 +0000 (19:12 +0200)]
spapr_pci: Robustify support of PCI bridges

Some recent error handling cleanups unveiled issues with our support of
PCI bridges:

1) QEMU aborts when using non-standard PCI bridge types,
   unveiled by commit 7ef1553dac "spapr_pci: Drop some dead error handling"

$ qemu-system-ppc64 -M pseries -device pcie-pci-bridge
Unexpected error in object_property_find() at qom/object.c:1240:
qemu-system-ppc64: -device pcie-pci-bridge: Property '.chassis_nr' not found
Aborted (core dumped)

This happens because we assume all PCI bridge types to have a "chassis_nr"
property. This property only exists with the standard PCI bridge type
"pci-bridge" actually. We could possibly revert 7ef1553dac but it seems
much simpler to check the presence of "chassis_nr" earlier.

2) QEMU abort if same "chassis_nr" value is used several times,
   unveiled by commit d2623129a7de "qom: Drop parameter @errp of
   object_property_add() & friends"

$ qemu-system-ppc64 -M pseries -device pci-bridge,chassis_nr=1 \
                        -device pci-bridge,chassis_nr=1
Unexpected error in object_property_try_add() at qom/object.c:1167:
qemu-system-ppc64: -device pci-bridge,chassis_nr=1: attempt to add duplicate property '40000100' to object (type 'container')
Aborted (core dumped)

This happens because we assume that "chassis_nr" values are unique, but
nobody enforces that and we end up generating duplicate DRC ids. The PCI
code doesn't really care for duplicate "chassis_nr" properties since it
is only used to initialize the "Chassis Number Register" of the bridge,
with no functional impact on QEMU. So, even if passing the same value
several times might look weird, it never broke anything before, so
I guess we don't necessarily want to enforce strict checking in the PCI
code now.

Workaround both issues in the PAPR code: check that the bridge has a
unique and non null "chassis_nr" when plugging it into its parent bus.

Fixes: 05929a6c5dfe ("spapr: Don't use bus number for building DRC ids")
Fixes: 7ef1553dac ("spapr_pci: Drop some dead error handling")
Fixes: d2623129a7de ("qom: Drop parameter @errp of object_property_add() & friends")
Reported-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <159431476748.407044.16711294833569014964.stgit@bahia.lan>
[dwg: Move check slightly to a better place]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
3 years agoppc/pnv: Make PSI device types not user creatable
Greg Kurz [Tue, 7 Jul 2020 16:35:57 +0000 (18:35 +0200)]
ppc/pnv: Make PSI device types not user creatable

QEMU aborts with -device pnv-psi-POWER8:

$ qemu-system-ppc64 -device pnv-psi-POWER8
qemu-system-ppc64: hw/intc/xics.c:605: ics_realize: Assertion
`ics->xics' failed.
Aborted (core dumped)

The Processor Service Interface Controller is an internal device.
It should only be instantiated by the chip, which takes care of
configuring the link required by the ICS object in the case of
POWER8. It doesn't make sense for a user to specify it on the
command line.

Note that the PSI model for POWER8 was added 3 yrs ago but the
devices weren't available on the command line because of a bug
that was fixed by recent commit 2f35254aa0 ("pnv/psi: Correct
the pnv-psi* devices not to be sysbus devices").

Fixes: 54f59d786c ("ppc/pnv: Add cut down PSI bridge model and hookup external interrupt")
Reported-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <159413975752.169116.5808968580649255382.stgit@bahia.lan>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
3 years agoMerge remote-tracking branch 'remotes/rth/tags/pull-tcg-20200717' into staging
Peter Maydell [Sun, 19 Jul 2020 09:29:05 +0000 (10:29 +0100)]
Merge remote-tracking branch 'remotes/rth/tags/pull-tcg-20200717' into staging

Fix vector min/max fallback expansion
Fix singlestep from exception and interrupt

# gpg: Signature made Fri 17 Jul 2020 19:13:32 BST
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# gpg:                issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [full]
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* remotes/rth/tags/pull-tcg-20200717:
  tcg/cpu-exec: precise single-stepping after an interrupt
  tcg/cpu-exec: precise single-stepping after an exception
  tcg: Save/restore vecop_list around minmax fallback

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
4 years agoMerge remote-tracking branch 'remotes/cminyard/tags/for-qemu-ipmi-5' into staging
Peter Maydell [Sat, 18 Jul 2020 22:59:03 +0000 (23:59 +0100)]
Merge remote-tracking branch 'remotes/cminyard/tags/for-qemu-ipmi-5' into staging

Man page update and new set sensor command

Some minor man page updates for fairly obvious things.

The set sensor command addition has been in the Power group's tree for a
long time and I have neglected to submit it.

-corey

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# gpg:                 aka "Corey Minyard <minyard@acm.org>" [unknown]
# gpg:                 aka "Corey Minyard <corey@minyard.net>" [unknown]
# gpg:                 aka "Corey Minyard <minyard@mvista.com>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
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# Primary key fingerprint: FD0D 5CE6 7CE0 F59A 6688  2686 61F3 8C90 919B FF81

* remotes/cminyard/tags/for-qemu-ipmi-5:
  ipmi: add SET_SENSOR_READING command
  ipmi: Fix a man page entry
  ipmi: Add man page pieces for the IPMI PCI devices

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
4 years agoMerge remote-tracking branch 'remotes/ericb/tags/pull-bitmaps-2020-07-17' into staging
Peter Maydell [Sat, 18 Jul 2020 21:24:34 +0000 (22:24 +0100)]
Merge remote-tracking branch 'remotes/ericb/tags/pull-bitmaps-2020-07-17' into staging

bitmaps patches for 2020-07-17

- improve corner-case of bitmap migration

# gpg: Signature made Fri 17 Jul 2020 16:10:07 BST
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# gpg: Good signature from "Eric Blake <eblake@redhat.com>" [full]
# gpg:                 aka "Eric Blake (Free Software Programmer) <ebb9@byu.net>" [full]
# gpg:                 aka "[jpeg image of size 6874]" [full]
# Primary key fingerprint: 71C2 CC22 B1C4 6029 27D2  F3AA A7A1 6B4A 2527 436A

* remotes/ericb/tags/pull-bitmaps-2020-07-17:
  migration/block-dirty-bitmap: fix add_bitmaps_to_list

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
4 years agoMerge remote-tracking branch 'remotes/cohuck/tags/s390x-20200717' into staging
Peter Maydell [Sat, 18 Jul 2020 16:27:34 +0000 (17:27 +0100)]
Merge remote-tracking branch 'remotes/cohuck/tags/s390x-20200717' into staging

Fix typo in newly added documentation.

# gpg: Signature made Fri 17 Jul 2020 14:54:20 BST
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# gpg:                issuer "cohuck@redhat.com"
# gpg: Good signature from "Cornelia Huck <conny@cornelia-huck.de>" [marginal]
# gpg:                 aka "Cornelia Huck <huckc@linux.vnet.ibm.com>" [full]
# gpg:                 aka "Cornelia Huck <cornelia.huck@de.ibm.com>" [full]
# gpg:                 aka "Cornelia Huck <cohuck@kernel.org>" [marginal]
# gpg:                 aka "Cornelia Huck <cohuck@redhat.com>" [marginal]
# Primary key fingerprint: C3D0 D66D C362 4FF6 A8C0  18CE DECF 6B93 C6F0 2FAF

* remotes/cohuck/tags/s390x-20200717:
  docs/s390x: fix vfio-ccw type

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
4 years agotcg/cpu-exec: precise single-stepping after an interrupt
Richard Henderson [Fri, 17 Jul 2020 16:26:59 +0000 (09:26 -0700)]
tcg/cpu-exec: precise single-stepping after an interrupt

When single-stepping with a debugger attached to QEMU, and when an
interrupt is raised, the debugger misses the first instruction after
the interrupt.

Tested-by: Luc Michel <luc.michel@greensocs.com>
Reviewed-by: Luc Michel <luc.michel@greensocs.com>
Buglink: https://bugs.launchpad.net/qemu/+bug/757702
Message-Id: <20200717163029.2737546-1-richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
4 years agoipmi: add SET_SENSOR_READING command
Cédric Le Goater [Mon, 18 Nov 2019 09:24:29 +0000 (10:24 +0100)]
ipmi: add SET_SENSOR_READING command

SET_SENSOR_READING is a complex IPMI command (see IPMI spec 35.17)
which enables the host software to set the reading value and the event
status of sensors supporting it.

Below is a proposal for all the operations (reading, assert, deassert,
event data) with the following limitations :

 - No event are generated for threshold-based sensors.
 - The case in which the BMC needs to generate its own events is not
   supported.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Corey Minyard <cminyard@mvista.com>
Message-Id: <20191118092429.16149-1-clg@kaod.org>
[Moved the break statement for case SENSOR_GEN_EVENT_DATA above the
 closing brace to keep the indention consistent.]
Signed-off-by: Corey Minyard <cminyard@mvista.com>
4 years agoipmi: Fix a man page entry
Corey Minyard [Fri, 17 Jul 2020 16:37:02 +0000 (11:37 -0500)]
ipmi: Fix a man page entry

The line was too long, and some of the entries were wrong (fur instead
of fru).  Just use the prop=val thing tha other entries use.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
4 years agoipmi: Add man page pieces for the IPMI PCI devices
Corey Minyard [Mon, 23 Sep 2019 18:50:33 +0000 (13:50 -0500)]
ipmi: Add man page pieces for the IPMI PCI devices

This was forgotten when the devices were added.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
4 years agoMerge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging
Peter Maydell [Fri, 17 Jul 2020 13:58:13 +0000 (14:58 +0100)]
Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer patches:

- file-posix: Fix read-only Linux block devices with auto-read-only
- Require aligned image size with O_DIRECT to avoid assertion failure
- Allow byte-aligned direct I/O on NFS instead of guessing 4k alignment
- Fix nbd_export_close_all() crash
- Fix race in iotests case 030
- qemu-img resize: Require --shrink for shrinking all image formats
- crypto: use a stronger private key for tests
- Remove VXHS block device
- MAINTAINERS: vvfat: set status to odd fixes

# gpg: Signature made Fri 17 Jul 2020 13:31:18 BST
# gpg:                using RSA key DC3DEB159A9AF95D3D7456FE7F09B272C88F2FD6
# gpg:                issuer "kwolf@redhat.com"
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full]
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74  56FE 7F09 B272 C88F 2FD6

* remotes/kevin/tags/for-upstream:
  file-posix: Fix leaked fd in raw_open_common() error path
  file-posix: Fix check_hdev_writable() with auto-read-only
  file-posix: Move check_hdev_writable() up
  file-posix: Allow byte-aligned O_DIRECT with NFS
  block: Require aligned image size to avoid assertion failure
  iotests: test shutdown when bitmap is exported through NBD
  nbd: make nbd_export_close_all() synchronous
  iotests/030: Reduce job speed to make race less likely
  crypto: use a stronger private key for tests
  qemu-img resize: Require --shrink for shrinking all image formats
  Remove VXHS block device
  vvfat: set status to odd fixes

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
4 years agomigration/block-dirty-bitmap: fix add_bitmaps_to_list
Vladimir Sementsov-Ogievskiy [Fri, 26 Jun 2020 13:06:58 +0000 (16:06 +0300)]
migration/block-dirty-bitmap: fix add_bitmaps_to_list

We shouldn't fail when finding an unnamed bitmap in a unnamed node or
node with auto-generated node name, as bitmap migration ignores such
bitmaps in the first place.

Fixes: 82640edb88faa
Fixes: 4ff5cc121b089
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20200626130658.76498-1-vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[eblake: commit message grammar tweaks]
Signed-off-by: Eric Blake <eblake@redhat.com>
4 years agofile-posix: Fix leaked fd in raw_open_common() error path
Kevin Wolf [Fri, 17 Jul 2020 10:54:26 +0000 (12:54 +0200)]
file-posix: Fix leaked fd in raw_open_common() error path

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200717105426.51134-4-kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
4 years agofile-posix: Fix check_hdev_writable() with auto-read-only
Kevin Wolf [Fri, 17 Jul 2020 10:54:25 +0000 (12:54 +0200)]
file-posix: Fix check_hdev_writable() with auto-read-only

For Linux block devices, being able to open the device read-write
doesn't necessarily mean that the device is actually writable (one
example is a read-only LV, as you get with lvchange -pr <device>). We
have check_hdev_writable() to check this condition and fail opening the
image read-write if it's not actually writable.

However, this check doesn't take auto-read-only into account, but
results in a hard failure instead of downgrading to read-only where
possible.

Fix this and do the writable check not based on BDRV_O_RDWR, but only
when this actually results in opening the file read-write. A second
check is inserted in raw_reconfigure_getfd() to have the same check when
dynamic auto-read-only upgrades an image file from read-only to
read-write.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200717105426.51134-3-kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
4 years agofile-posix: Move check_hdev_writable() up
Kevin Wolf [Fri, 17 Jul 2020 10:54:24 +0000 (12:54 +0200)]
file-posix: Move check_hdev_writable() up

We'll need to call it in raw_open_common(), so move the function to
avoid a forward declaration.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200717105426.51134-2-kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
4 years agofile-posix: Allow byte-aligned O_DIRECT with NFS
Kevin Wolf [Thu, 16 Jul 2020 14:26:01 +0000 (16:26 +0200)]
file-posix: Allow byte-aligned O_DIRECT with NFS

Since commit a6b257a08e3 ('file-posix: Handle undetectable alignment'),
we assume that if we open a file with O_DIRECT and alignment probing
returns 1, we just couldn't find out the real alignment requirement
because some filesystems make the requirement only for allocated blocks.
In this case, a safe default of 4k is used.

This is too strict for NFS, which does actually allow byte-aligned
requests even with O_DIRECT. Because we can't distinguish both cases
with generic code, let's just look at the file system magic and disable
s->needs_alignment for NFS. This way, O_DIRECT can still be used on NFS
for images that are not aligned to 4k.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200716142601.111237-3-kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
4 years agoblock: Require aligned image size to avoid assertion failure
Kevin Wolf [Thu, 16 Jul 2020 14:26:00 +0000 (16:26 +0200)]
block: Require aligned image size to avoid assertion failure

Unaligned requests will automatically be aligned to bl.request_alignment
and we can't extend write requests to access space beyond the end of the
image without resizing the image, so if we have the WRITE permission,
but not the RESIZE one, it's required that the image size is aligned.

Failing to meet this requirement could cause assertion failures like
this if RESIZE permissions weren't requested:

qemu-img: block/io.c:1910: bdrv_co_write_req_prepare: Assertion `end_sector <= bs->total_sectors || child->perm & BLK_PERM_RESIZE' failed.

This was e.g. triggered by qemu-img converting to a target image with 4k
request alignment when the image was only aligned to 512 bytes, but not
to 4k.

Turn this into a graceful error in bdrv_check_perm() so that WRITE
without RESIZE can only be taken if the image size is aligned. If a user
holds both permissions and drops only RESIZE, the function will return
an error, but bdrv_child_try_set_perm() will ignore the failure silently
if permissions are only requested to be relaxed and just keep both
permissions while returning success.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200716142601.111237-2-kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
4 years agoiotests: test shutdown when bitmap is exported through NBD
Vladimir Sementsov-Ogievskiy [Tue, 14 Jul 2020 16:22:34 +0000 (19:22 +0300)]
iotests: test shutdown when bitmap is exported through NBD

Test shutdown when bitmap is exported through NBD and active client
exists. The previous patch fixes a crash, provoked by this scenario.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Tested-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200714162234.13113-3-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
4 years agonbd: make nbd_export_close_all() synchronous
Vladimir Sementsov-Ogievskiy [Tue, 14 Jul 2020 16:22:33 +0000 (19:22 +0300)]
nbd: make nbd_export_close_all() synchronous

Consider nbd_export_close_all(). The call-stack looks like this:
 nbd_export_close_all() -> nbd_export_close -> call client_close() for
each client.

client_close() doesn't guarantee that client is closed: nbd_trip()
keeps reference to it. So, nbd_export_close_all() just reduce
reference counter on export and removes it from the list, but doesn't
guarantee that nbd_trip() finished neither export actually removed.

Let's wait for all exports actually removed.

Without this fix, the following crash is possible:

- export bitmap through internal Qemu NBD server
- connect a client
- shutdown Qemu

On shutdown nbd_export_close_all is called, but it actually don't wait
for nbd_trip() to finish and to release its references. So, export is
not release, and exported bitmap remains busy, and on try to remove the
bitmap (which is part of bdrv_close()) the assertion fails:

bdrv_release_dirty_bitmap_locked: Assertion `!bdrv_dirty_bitmap_busy(bitmap)' failed

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200714162234.13113-2-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
4 years agoiotests/030: Reduce job speed to make race less likely
Kevin Wolf [Thu, 16 Jul 2020 13:28:29 +0000 (15:28 +0200)]
iotests/030: Reduce job speed to make race less likely

It can happen that the throttling of the stream job doesn't make it slow
enough that we can be sure that it still exists when it is referenced
again. Just use a much smaller speed to make this very unlikely to
happen again.

Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200716132829.20127-1-kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
4 years agocrypto: use a stronger private key for tests
Daniel P. Berrangé [Wed, 15 Jul 2020 15:47:01 +0000 (16:47 +0100)]
crypto: use a stronger private key for tests

The unit tests using the x509 crypto functionality have started
failing in Fedora 33 rawhide with a message like

      The certificate uses an insecure algorithm

This is result of Fedora changes to support strong crypto [1]. RSA
with 1024 bit key is viewed as legacy and thus insecure. Generate
a new private key which is 3072 bits long and reasonable future
proof.

[1] https://fedoraproject.org/wiki/Changes/StrongCryptoSettings2

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20200715154701.1041325-1-berrange@redhat.com>
Reviewed-by: Kashyap Chamarthy <kchamart@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
4 years agoqemu-img resize: Require --shrink for shrinking all image formats
Kevin Wolf [Fri, 10 Jul 2020 12:17:17 +0000 (14:17 +0200)]
qemu-img resize: Require --shrink for shrinking all image formats

QEMU 2.11 introduced the --shrink option for qemu-img resize to avoid
accidentally shrinking images (commit 4ffca8904a3). However, for
compatibility reasons, it was not enforced for raw images yet, but only
a deprecation warning was printed. This warning has existed for long
enough that we can now finally require --shrink for raw images, too, and
error out if it's not given.

Documentation already describes the state as it is after this patch.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200710121717.28339-1-kwolf@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
4 years agoRemove VXHS block device
Marc-André Lureau [Sat, 11 Jul 2020 06:59:26 +0000 (10:59 +0400)]
Remove VXHS block device

The vxhs code doesn't compile since v2.12.0. There's no point in fixing
and then adding CI for a config that our users have demonstrated that
they do not use; better to just remove it.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20200711065926.2204721-1-marcandre.lureau@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
4 years agovvfat: set status to odd fixes
Prasad J Pandit [Fri, 10 Jul 2020 19:04:51 +0000 (00:34 +0530)]
vvfat: set status to odd fixes

Virtual VFAT driver is quite old and rarely used. Set its status
to Odd Fixes.

Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Message-Id: <20200710190451.761286-1-ppandit@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
4 years agoMerge remote-tracking branch 'remotes/huth-gitlab/tags/pull-request-2020-07-17' into...
Peter Maydell [Fri, 17 Jul 2020 11:06:02 +0000 (12:06 +0100)]
Merge remote-tracking branch 'remotes/huth-gitlab/tags/pull-request-2020-07-17' into staging

* Leak fixes
* One fix for running with --enable-werror on macOS
* Add fuzzer test to the Gitlab-CI

# gpg: Signature made Fri 17 Jul 2020 10:53:07 BST
# gpg:                using RSA key 27B88847EEE0250118F3EAB92ED9D774FE702DB5
# gpg:                issuer "thuth@redhat.com"
# gpg: Good signature from "Thomas Huth <th.huth@gmx.de>" [full]
# gpg:                 aka "Thomas Huth <thuth@redhat.com>" [full]
# gpg:                 aka "Thomas Huth <huth@tuxfamily.org>" [full]
# gpg:                 aka "Thomas Huth <th.huth@posteo.de>" [unknown]
# Primary key fingerprint: 27B8 8847 EEE0 2501 18F3  EAB9 2ED9 D774 FE70 2DB5

* remotes/huth-gitlab/tags/pull-request-2020-07-17:
  gitlab-ci.yml: Add fuzzer tests
  qom: Plug memory leak in "info qom-tree"
  configure: Fix for running with --enable-werror on macOS
  fuzz: Expect the cmdline in a freeable GString
  tests: qmp-cmd-test: fix memory leak
  qtest: bios-tables-test: fix a memory leak

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
4 years agodocs/s390x: fix vfio-ccw type
Cornelia Huck [Thu, 16 Jul 2020 14:50:31 +0000 (16:50 +0200)]
docs/s390x: fix vfio-ccw type

Fix the type name in the mdevctl example.

Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Eric Farman <farman@linux.ibm.com>
Message-Id: <20200716145031.771476-1-cohuck@redhat.com>

4 years agogitlab-ci.yml: Add fuzzer tests
Thomas Huth [Wed, 15 Jul 2020 04:32:48 +0000 (06:32 +0200)]
gitlab-ci.yml: Add fuzzer tests

So far we neither compile-tested nor run any of the new fuzzers in our CI,
which led to some build failures of the fuzzer code in the past weeks.
To avoid this problem, add a job to compile the fuzzer code and run some
loops (which likely don't find any new bugs via fuzzing, but at least we
know that the code can still be run).

A nice side-effect of this test is that the leak tests are enabled here,
so we should now notice some of the memory leaks in our code base earlier.

Message-Id: <20200716100950.27396-1-thuth@redhat.com>
Reviewed-by: Alexander Bulekov <alxndr@bu.edu>
Signed-off-by: Thomas Huth <thuth@redhat.com>
4 years agoqom: Plug memory leak in "info qom-tree"
Markus Armbruster [Tue, 14 Jul 2020 16:01:59 +0000 (18:01 +0200)]
qom: Plug memory leak in "info qom-tree"

Commit e8c9e65816 "qom: Make "info qom-tree" show children sorted"
created a memory leak, because I didn't realize
object_get_canonical_path_component()'s value needs to be freed.

Reproducer:

    $ qemu-system-x86_64 -nodefaults -display none -S -monitor stdio
    QEMU 5.0.50 monitor - type 'help' for more information
    (qemu) info qom-tree

This leaks some 4500 path components, 12-13 characters on average,
i.e. roughly 100kBytes depending on the allocator.  A couple of
hundred "info qom-tree" here, a couple of hundred there, and soon
enough we're talking about real memory.

Plug the leak.

Fixes: e8c9e65816f5dbfe18ad3b2be938d0d8192d459a
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reported-by: Reviewed-by: Li Qiang <liq3ea@gmail.com> [sent same patch]
Message-Id: <20200714160202.3121879-3-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
4 years agoconfigure: Fix for running with --enable-werror on macOS
Thomas Huth [Thu, 16 Jul 2020 05:12:22 +0000 (07:12 +0200)]
configure: Fix for running with --enable-werror on macOS

The configure script currently refuses to succeed when run on macOS
with --enable-werror:

 ERROR: configure test passed without -Werror but failed with -Werror.

The information in config.log indicates:

 config-temp/qemu-conf.c:3:55: error: control reaches end of non-void
 function [-Werror,-Wreturn-type]
 static void *f(void *p) { pthread_setname_np("QEMU"); }
                                                      ^
And indeed, the return statement is missing here.

Fixes: 479a57475e ("util: Implement debug-threads for macOS")
Message-Id: <20200716055655.24507-1-thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
4 years agofuzz: Expect the cmdline in a freeable GString
Alexander Bulekov [Tue, 14 Jul 2020 17:46:16 +0000 (13:46 -0400)]
fuzz: Expect the cmdline in a freeable GString

In the initial FuzzTarget, get_init_cmdline returned a char *. With this
API, we had no guarantee about where the string came from. For example,
i440fx-qtest-reboot-fuzz simply returned a pointer to a string literal,
while the QOS-based targets build the arguments out in a GString an
return the gchar *str pointer. Since we did not try to free the cmdline,
we have a leak for any targets that do not simply return string
literals. Clean up this mess by forcing fuzz-targets to return
a GString, that we can free.

Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
Message-Id: <20200714174616.20709-1-alxndr@bu.edu>
Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
4 years agotests: qmp-cmd-test: fix memory leak
Li Qiang [Wed, 15 Jul 2020 15:41:17 +0000 (08:41 -0700)]
tests: qmp-cmd-test: fix memory leak

Properly free each test response to avoid memory leak and separate
qtest_qmp() calls with spare lines, in a consistent manner.

Fixes: 5b88849e7b9("tests/qmp-cmd-test: Add qmp/object-add-failure-modes")
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Li Qiang <liq3ea@163.com>
Message-Id: <20200715154117.15456-1-liq3ea@163.com>
Fixes: 9fc719b869 ("tests/qmp-cmd-test: Add qmp/object-add-duplicate-id")
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
4 years agoqtest: bios-tables-test: fix a memory leak
Li Qiang [Tue, 14 Jul 2020 15:35:36 +0000 (08:35 -0700)]
qtest: bios-tables-test: fix a memory leak

Fixes: 5da7c35e25a("bios-tables-test: Add Q35/TPM-TIS test")
Signed-off-by: Li Qiang <liq3ea@163.com>
Message-Id: <20200714153536.66060-1-liq3ea@163.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
4 years agotcg/cpu-exec: precise single-stepping after an exception
Luc Michel [Thu, 16 Jul 2020 19:39:47 +0000 (21:39 +0200)]
tcg/cpu-exec: precise single-stepping after an exception

When single-stepping with a debugger attached to QEMU, and when an
exception is raised, the debugger misses the first instruction after the
exception:

$ qemu-system-aarch64 -M virt -display none -cpu cortex-a53 -s -S

$ aarch64-linux-gnu-gdb
GNU gdb (GDB) 9.2
[...]
(gdb) tar rem :1234
Remote debugging using :1234
warning: No executable has been specified and target does not support
determining executable automatically.  Try using the "file" command.
0x0000000000000000 in ?? ()
(gdb) # writing nop insns to 0x200 and 0x204
(gdb) set *0x200 = 0xd503201f
(gdb) set *0x204 = 0xd503201f
(gdb) # 0x0 address contains 0 which is an invalid opcode.
(gdb) # The CPU should raise an exception and jump to 0x200
(gdb) si
0x0000000000000204 in ?? ()

With this commit, the same run steps correctly on the first instruction
of the exception vector:

(gdb) si
0x0000000000000200 in ?? ()

Buglink: https://bugs.launchpad.net/qemu/+bug/757702
Signed-off-by: Luc Michel <luc.michel@greensocs.com>
Message-Id: <20200716193947.3058389-1-luc.michel@greensocs.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
4 years agoMerge remote-tracking branch 'remotes/ehabkost/tags/x86-next-pull-request' into staging
Peter Maydell [Thu, 16 Jul 2020 20:46:18 +0000 (21:46 +0100)]
Merge remote-tracking branch 'remotes/ehabkost/tags/x86-next-pull-request' into staging

x86 fixes for -rc1

Fixes for x86 that missed hard freeze:
* Don't trigger warnings for features set by
  CPU model versions (Xiaoyao Li)
* Missing features in Icelake-Server, Skylake-Server,
  Cascadelake-Server CPU models (Chenyi Qiang)
* Fix hvf x86_64 guest boot crash (Roman Bolshakov)

# gpg: Signature made Thu 16 Jul 2020 19:17:18 BST
# gpg:                using RSA key 5A322FD5ABC4D3DBACCFD1AA2807936F984DC5A6
# gpg:                issuer "ehabkost@redhat.com"
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>" [full]
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* remotes/ehabkost/tags/x86-next-pull-request:
  i386: hvf: Explicitly set CR4 guest/host mask
  target/i386: add the missing vmx features for Skylake-Server and Cascadelake-Server CPU models
  target/i386: fix model number and add missing features for Icelake-Server CPU model
  target/i386: add fast short REP MOV support
  i386/cpu: Don't add unavailable_features to env->user_features
  i368/cpu: Clear env->user_features after loading versioned CPU model

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
4 years agotcg: Save/restore vecop_list around minmax fallback
Richard Henderson [Tue, 9 Jun 2020 23:32:09 +0000 (16:32 -0700)]
tcg: Save/restore vecop_list around minmax fallback

Forgetting this asserts when tcg_gen_cmp_vec is called from
within tcg_gen_cmpsel_vec.

Fixes: 72b4c792c7a
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
4 years agoi386: hvf: Explicitly set CR4 guest/host mask
Roman Bolshakov [Tue, 14 Jul 2020 09:07:27 +0000 (12:07 +0300)]
i386: hvf: Explicitly set CR4 guest/host mask

Removal of register reset omitted initialization of CR4 guest/host mask.
x86_64 guests aren't booting without it.

Fixes: 5009ef22c6bb2 ("i386: hvf: Don't duplicate register reset")
Signed-off-by: Roman Bolshakov <r.bolshakov@yadro.com>
Message-Id: <20200714090726.41082-1-r.bolshakov@yadro.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
4 years agoMerge remote-tracking branch 'remotes/kraxel/tags/fixes-20200716-pull-request' into...
Peter Maydell [Thu, 16 Jul 2020 17:50:51 +0000 (18:50 +0100)]
Merge remote-tracking branch 'remotes/kraxel/tags/fixes-20200716-pull-request' into staging

fixes: usb storage regression, vfio display ramfb bug

# gpg: Signature made Thu 16 Jul 2020 10:30:58 BST
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# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" [full]
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>" [full]
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>" [full]
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/fixes-20200716-pull-request:
  usb: fix storage regression
  vfio: fix use-after-free in display

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
4 years agohw/i2c: Document the I2C qdev helpers
Philippe Mathieu-Daudé [Sun, 5 Jul 2020 22:41:54 +0000 (00:41 +0200)]
hw/i2c: Document the I2C qdev helpers

In commit d88c42ff2c we added new prototype but neglected to
add their documentation. Fix that.

Reported-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Corey Minyard <cminyard@mvista.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20200705224154.16917-6-f4bug@amsat.org>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
4 years agohw/i2c: Rename i2c_create_slave() as i2c_slave_create_simple()
Philippe Mathieu-Daudé [Sun, 5 Jul 2020 22:41:53 +0000 (00:41 +0200)]
hw/i2c: Rename i2c_create_slave() as i2c_slave_create_simple()

We use "create_simple" names for functions that allocate, initialize,
configure and realize device objects: pci_create_simple(),
isa_create_simple(), usb_create_simple(). For consistency, rename
i2c_create_slave() as i2c_slave_create_simple(). Since we have
to update all the callers, also let it return a I2CSlave object.

Suggested-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Corey Minyard <cminyard@mvista.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20200705224154.16917-5-f4bug@amsat.org>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
4 years agohw/i2c: Rename i2c_realize_and_unref() as i2c_slave_realize_and_unref()
Philippe Mathieu-Daudé [Sun, 5 Jul 2020 22:41:52 +0000 (00:41 +0200)]
hw/i2c: Rename i2c_realize_and_unref() as i2c_slave_realize_and_unref()

The other i2c functions are called i2c_slave_FOO(). Rename as
i2c_slave_realize_and_unref() to be consistent.

Suggested-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20200705224154.16917-4-f4bug@amsat.org>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
4 years agohw/i2c: Rename i2c_try_create_slave() as i2c_slave_new()
Philippe Mathieu-Daudé [Sun, 5 Jul 2020 22:41:51 +0000 (00:41 +0200)]
hw/i2c: Rename i2c_try_create_slave() as i2c_slave_new()

We use "new" names for functions that allocate and initialize
device objects: pci_new(), isa_new(), usb_new().
Let's call this one i2c_slave_new(). Since we have to update
all the callers, also let it return a I2CSlave object.

Suggested-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20200705224154.16917-3-f4bug@amsat.org>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
4 years agohw/i2c/aspeed_i2c: Simplify aspeed_i2c_get_bus()
Philippe Mathieu-Daudé [Sun, 5 Jul 2020 22:41:50 +0000 (00:41 +0200)]
hw/i2c/aspeed_i2c: Simplify aspeed_i2c_get_bus()

All the callers of aspeed_i2c_get_bus() have a AspeedI2CState and
cast it to a DeviceState with DEVICE(), then aspeed_i2c_get_bus()
cast the DeviceState to an AspeedI2CState with ASPEED_I2C()...

Simplify aspeed_i2c_get_bus() callers by using AspeedI2CState
argument.

Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20200705224154.16917-2-f4bug@amsat.org>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
4 years agohw/i2c/Kconfig: Add an entry for the SMBus
Philippe Mathieu-Daudé [Tue, 31 Dec 2019 18:32:07 +0000 (19:32 +0100)]
hw/i2c/Kconfig: Add an entry for the SMBus

The System Management Bus is more or less a derivative of the I2C
bus, thus the Kconfig entry depends of I2C.
Not all boards providing an I2C bus support SMBus.
Use two different Kconfig entries to be able to select I2C without
selecting SMBus.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20191231183216.6781-6-philmd@redhat.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
4 years agotarget/i386: add the missing vmx features for Skylake-Server and Cascadelake-Server...
Chenyi Qiang [Tue, 14 Jul 2020 08:41:48 +0000 (16:41 +0800)]
target/i386: add the missing vmx features for Skylake-Server and Cascadelake-Server CPU models

Add the missing vmx features in Skylake-Server and Cascadelake-Server
CPU models based on the output of Paolo's script.

Signed-off-by: Chenyi Qiang <chenyi.qiang@intel.com>
Message-Id: <20200714084148.26690-4-chenyi.qiang@intel.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
4 years agotarget/i386: fix model number and add missing features for Icelake-Server CPU model
Chenyi Qiang [Tue, 14 Jul 2020 08:41:47 +0000 (16:41 +0800)]
target/i386: fix model number and add missing features for Icelake-Server CPU model

Add the missing features(sha_ni, avx512ifma, rdpid, fsrm,
vmx-rdseed-exit, vmx-pml, vmx-eptp-switching) and change the model
number to 106 in the Icelake-Server-v4 CPU model.

Signed-off-by: Chenyi Qiang <chenyi.qiang@intel.com>
Message-Id: <20200714084148.26690-3-chenyi.qiang@intel.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
4 years agotarget/i386: add fast short REP MOV support
Chenyi Qiang [Tue, 14 Jul 2020 08:41:46 +0000 (16:41 +0800)]
target/i386: add fast short REP MOV support

For CPUs support fast short REP MOV[CPUID.(EAX=7,ECX=0):EDX(bit4)], e.g
Icelake and Tigerlake, expose it to the guest VM.

Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Chenyi Qiang <chenyi.qiang@intel.com>
Message-Id: <20200714084148.26690-2-chenyi.qiang@intel.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
4 years agoi386/cpu: Don't add unavailable_features to env->user_features
Xiaoyao Li [Mon, 13 Jul 2020 17:44:36 +0000 (01:44 +0800)]
i386/cpu: Don't add unavailable_features to env->user_features

Features unavailable due to absent of their dependent features should
not be added to env->user_features. env->user_features only contains the
feature explicity specified with -feature/+feature by user.

Fixes: 99e24dbdaa68 ("target/i386: introduce generic feature dependency mechanism")
Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Message-Id: <20200713174436.41070-3-xiaoyao.li@intel.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
4 years agoi368/cpu: Clear env->user_features after loading versioned CPU model
Xiaoyao Li [Mon, 13 Jul 2020 17:44:35 +0000 (01:44 +0800)]
i368/cpu: Clear env->user_features after loading versioned CPU model

Features defined in versioned CPU model are recorded in env->user_features
since they are updated as property. It's unwated because they are not
user specified.

Simply clear env->user_features as a fix. It won't clear user specified
features because user specified features are filled to
env->user_features later in x86_cpu_expand_features().

Cc: Chenyi Qiang <chenyi.qiang@intel.com>
Suggested-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Message-Id: <20200713174436.41070-2-xiaoyao.li@intel.com>
[ehabkost: fix coding style]
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
4 years agoMerge remote-tracking branch 'remotes/stefanberger/tags/pull-tpm-2020-07-15-1' into...
Peter Maydell [Thu, 16 Jul 2020 13:46:47 +0000 (14:46 +0100)]
Merge remote-tracking branch 'remotes/stefanberger/tags/pull-tpm-2020-07-15-1' into staging

Merge tpm 2020/07/15 v1

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# gpg: Good signature from "Stefan Berger <stefanb@linux.vnet.ibm.com>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
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# Primary key fingerprint: B818 B9CA DF90 89C2 D5CE  C66B 75AD 6580 2A0B 4211

* remotes/stefanberger/tags/pull-tpm-2020-07-15-1:
  tests: tpm: Skip over pcrUpdateCounter byte in result comparison
  tpm: tpm_spapr: Exit on TPM backend failures

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
4 years agoMerge remote-tracking branch 'remotes/jasowang/tags/net-pull-request' into staging
Peter Maydell [Thu, 16 Jul 2020 12:12:05 +0000 (13:12 +0100)]
Merge remote-tracking branch 'remotes/jasowang/tags/net-pull-request' into staging

# gpg: Signature made Wed 15 Jul 2020 14:49:07 BST
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# gpg: Good signature from "Jason Wang (Jason Wang on RedHat) <jasowang@redhat.com>" [marginal]
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
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# Primary key fingerprint: 215D 46F4 8246 689E C77F  3562 EF04 965B 398D 6211

* remotes/jasowang/tags/net-pull-request:
  ftgmac100: fix dblac write test
  net: detect errors from probing vnet hdr flag for TAP devices
  net: check if the file descriptor is valid before using it
  qemu-options.hx: Clean up and fix typo for colo-compare
  net/colo-compare.c: Expose compare "max_queue_size" to users
  hw/net: Added CSO for IPv6
  virtio-net: fix removal of failover device

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
4 years agousb: fix storage regression
Gerd Hoffmann [Mon, 13 Jul 2020 06:27:12 +0000 (08:27 +0200)]
usb: fix storage regression

Fix the contition to figure whenever we need to wait for more data or
not.  Simply check the mode, if we are not in DATAIN state any more we
are done already and don't need to go ASYNC.

Fixes: 7ad3d51ebb8a ("usb: add short-packet handling to usb-storage driver")
Reported-by: Sai Pavan Boddu <saipava@xilinx.com>
Tested-by: Paul Zimmerman <pauldzim@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20200713062712.1476-1-kraxel@redhat.com

4 years agovfio: fix use-after-free in display
Gerd Hoffmann [Mon, 13 Jul 2020 12:45:20 +0000 (14:45 +0200)]
vfio: fix use-after-free in display

Calling ramfb_display_update() might replace the DisplaySurface with the
boot display, which in turn will free the currently active
DisplaySurface.

So clear our DisplaySurface pinter (dpy->region.surface pointer) to (a)
avoid use-after-free and (b) force replacing the boot display with the
real display when switching back.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
Message-id: 20200713124520.23266-1-kraxel@redhat.com

4 years agotests: tpm: Skip over pcrUpdateCounter byte in result comparison
Stefan Berger [Tue, 7 Jul 2020 20:16:25 +0000 (16:16 -0400)]
tests: tpm: Skip over pcrUpdateCounter byte in result comparison

The TPM 2 code in libtpms was fixed to handle the PCR 'TCB group' according
to the PCClient profile. The change of the PCRs belonging to the 'TCB group'
now affects the pcrUpdateCounter in the TPM2_PCRRead() responses where its
value is now different (typically lower by '1') than what it was before. To
not fail the tests, we skip the comparison of the 14th byte, which
represents the pcrUpdateCounter.

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20200707201625.4177419-3-stefanb@linux.vnet.ibm.com

4 years agotpm: tpm_spapr: Exit on TPM backend failures
Stefan Berger [Tue, 7 Jul 2020 20:16:24 +0000 (16:16 -0400)]
tpm: tpm_spapr: Exit on TPM backend failures

Exit on TPM backend failures in the same way as the TPM CRB and TIS device
models do. With this change we now get an error report when the backend
did not start up properly:

error: internal error: qemu unexpectedly closed the monitor:
2020-07-07T12:49:28.333928Z qemu-system-ppc64: tpm-emulator: \
  TPM result for CMD_INIT: 0x101 operation failed

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20200707201625.4177419-2-stefanb@linux.vnet.ibm.com

4 years agoUpdate version for v5.1.0-rc0 release
Peter Maydell [Wed, 15 Jul 2020 18:08:07 +0000 (19:08 +0100)]
Update version for v5.1.0-rc0 release

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
4 years agoMerge remote-tracking branch 'remotes/stsquad/tags/pull-misc-for-rc0-150720-3' into...
Peter Maydell [Wed, 15 Jul 2020 16:16:39 +0000 (17:16 +0100)]
Merge remote-tracking branch 'remotes/stsquad/tags/pull-misc-for-rc0-150720-3' into staging

Final fixes for 5.1-rc0

  - minor documentation nit
  - docker.py bootstrap fixes
  - tweak containers.yml wildcards
  - fix float16 nan detection
  - conditional use of -Wpsabi
  - fix missing iotlb data for plugins
  - proper locking for helper based bb count
  - drop ppc64abi32 from the plugin check-tcg test

# gpg: Signature made Wed 15 Jul 2020 11:59:08 BST
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* remotes/stsquad/tags/pull-misc-for-rc0-150720-3:
  .travis.yml: skip ppc64abi32-linux-user with plugins
  plugins: expand the bb plugin to be thread safe and track per-cpu
  cputlb: ensure we save the IOTLB data in case of reset
  tests/plugins: don't unconditionally add -Wpsabi
  fpu/softfloat: fix up float16 nan recognition
  gitlab-ci/containers: Add missing wildcard where we should look for changes
  docker.py: fix fetching of FROM layers
  tests/docker: Remove the libssh workaround from the ubuntu 20.04 image
  docs/devel: fix grammar in multi-thread-tcg

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
4 years agoftgmac100: fix dblac write test
erik-smit [Sun, 28 Jun 2020 14:26:59 +0000 (16:26 +0200)]
ftgmac100: fix dblac write test

The test of the write of the dblac register was testing the old value
instead of the new value. This would accept the write of an invalid value
but subsequently refuse any following valid writes.

Signed-off-by: erik-smit <erik.lucas.smit@gmail.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Jason Wang <jasowang@redhat.com>
4 years agonet: detect errors from probing vnet hdr flag for TAP devices
Daniel P. Berrange [Tue, 7 Jul 2020 18:45:15 +0000 (20:45 +0200)]
net: detect errors from probing vnet hdr flag for TAP devices

When QEMU sets up a tap based network device backend, it mostly ignores errors
reported from various ioctl() calls it makes, assuming the TAP file descriptor
is valid. This assumption can easily be violated when the user is passing in a
pre-opened file descriptor. At best, the ioctls may fail with a -EBADF, but if
the user passes in a bogus FD number that happens to clash with a FD number that
QEMU has opened internally for another reason, a wide variety of errnos may
result, as the TUNGETIFF ioctl number may map to a completely different command
on a different type of file.

By ignoring all these errors, QEMU sets up a zombie network backend that will
never pass any data. Even worse, when QEMU shuts down, or that network backend
is hot-removed, it will close this bogus file descriptor, which could belong to
another QEMU device backend.

There's no obvious guaranteed reliable way to detect that a FD genuinely is a
TAP device, as opposed to a UNIX socket, or pipe, or something else. Checking
the errno from probing vnet hdr flag though, does catch the big common cases.
ie calling TUNGETIFF will return EBADF for an invalid FD, and ENOTTY when FD is
a UNIX socket, or pipe which catches accidental collisions with FDs used for
stdio, or monitor socket.

Previously the example below where bogus fd 9 collides with the FD used for the
chardev saw:

$ ./x86_64-softmmu/qemu-system-x86_64 -netdev tap,id=hostnet0,fd=9 \
  -chardev socket,id=charchannel0,path=/tmp/qga,server,nowait \
  -monitor stdio -vnc :0
qemu-system-x86_64: -netdev tap,id=hostnet0,fd=9: TUNGETIFF ioctl() failed: Inappropriate ioctl for device
TUNSETOFFLOAD ioctl() failed: Bad address
QEMU 2.9.1 monitor - type 'help' for more information
(qemu) Warning: netdev hostnet0 has no peer

which gives a running QEMU with a zombie network backend.

With this change applied we get an error message and QEMU immediately exits
before carrying on and making a bigger disaster:

$ ./x86_64-softmmu/qemu-system-x86_64 -netdev tap,id=hostnet0,fd=9 \
  -chardev socket,id=charchannel0,path=/tmp/qga,server,nowait \
  -monitor stdio -vnc :0
qemu-system-x86_64: -netdev tap,id=hostnet0,vhost=on,fd=9: Unable to query TUNGETIFF on FD 9: Inappropriate ioctl for device

Reported-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Tested-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-id: 20171027085548.3472-1-berrange@redhat.com
[lv: to simplify, don't check on EINVAL with TUNGETIFF as it exists since v2.6.27]
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
4 years agonet: check if the file descriptor is valid before using it
Laurent Vivier [Tue, 7 Jul 2020 18:45:14 +0000 (20:45 +0200)]
net: check if the file descriptor is valid before using it

qemu_set_nonblock() checks that the file descriptor can be used and, if
not, crashes QEMU. An assert() is used for that. The use of assert() is
used to detect programming error and the coredump will allow to debug
the problem.

But in the case of the tap device, this assert() can be triggered by
a misconfiguration by the user. At startup, it's not a real problem, but it
can also happen during the hot-plug of a new device, and here it's a
problem because we can crash a perfectly healthy system.

For instance:
 # ip link add link virbr0 name macvtap0 type macvtap mode bridge
 # ip link set macvtap0 up
 # TAP=/dev/tap$(ip -o link show macvtap0 | cut -d: -f1)
 # qemu-system-x86_64 -machine q35 -device pcie-root-port,id=pcie-root-port-0 -monitor stdio 9<> $TAP
 (qemu) netdev_add type=tap,id=hostnet0,vhost=on,fd=9
 (qemu) device_add driver=virtio-net-pci,netdev=hostnet0,id=net0,bus=pcie-root-port-0
 (qemu) device_del net0
 (qemu) netdev_del hostnet0
 (qemu) netdev_add type=tap,id=hostnet1,vhost=on,fd=9
 qemu-system-x86_64: .../util/oslib-posix.c:247: qemu_set_nonblock: Assertion `f != -1' failed.
 Aborted (core dumped)

To avoid that, add a function, qemu_try_set_nonblock(), that allows to report the
problem without crashing.

In the same way, we also update the function for vhostfd in net_init_tap_one() and
for fd in net_init_socket() (both descriptors are provided by the user and can
be wrong).

Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
4 years agoqemu-options.hx: Clean up and fix typo for colo-compare
Zhang Chen [Wed, 24 Jun 2020 01:20:42 +0000 (09:20 +0800)]
qemu-options.hx: Clean up and fix typo for colo-compare

Fix some typo and optimized some descriptions.

Signed-off-by: Zhang Chen <chen.zhang@intel.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
4 years agonet/colo-compare.c: Expose compare "max_queue_size" to users
Zhang Chen [Wed, 24 Jun 2020 01:20:41 +0000 (09:20 +0800)]
net/colo-compare.c: Expose compare "max_queue_size" to users

This patch allow users to set the "max_queue_size" according
to their environment.

Signed-off-by: Zhang Chen <chen.zhang@intel.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
4 years agohw/net: Added CSO for IPv6
Andrew [Mon, 29 Jun 2020 01:17:59 +0000 (04:17 +0300)]
hw/net: Added CSO for IPv6

Added fix for checksum offload for IPv6 if a backend doesn't
have a virtual header.
This patch is a part of IPv6 fragmentation.

Signed-off-by: Andrew Melnychenko <andrew@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
4 years agovirtio-net: fix removal of failover device
Juan Quintela [Fri, 3 Jul 2020 11:48:13 +0000 (13:48 +0200)]
virtio-net: fix removal of failover device

If you have a networking device and its virtio failover device, and
you remove them in this order:
- virtio device
- the real device

You get qemu crash.
See bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1820120

Bug exist on qemu 4.2 and 5.0.
But in 5.0 don't shows because commit
77b06bba62034a87cc61a9c8de1309ae3e527d97

somehow papers over it.

CC: Jason Wang <jasowang@redhat.com>
CC: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
4 years agoMerge remote-tracking branch 'remotes/philmd-gitlab/tags/mips-next-20200714' into...
Peter Maydell [Wed, 15 Jul 2020 12:54:09 +0000 (13:54 +0100)]
Merge remote-tracking branch 'remotes/philmd-gitlab/tags/mips-next-20200714' into staging

MIPS patches for 5.1

- A pair of fixes,
- Add Huacai Chen as MIPS KVM maintainer,
- Add Jiaxun Yang as designated MIPS TCG reviewer.

CI jobs results:
. https://travis-ci.org/github/philmd/qemu/builds/708079271
. https://gitlab.com/philmd/qemu/-/pipelines/166528104
. https://cirrus-ci.com/build/6483996878045184

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* remotes/philmd-gitlab/tags/mips-next-20200714:
  MAINTAINERS: Adjust MIPS maintainership (add Huacai Chen & Jiaxun Yang)
  target/mips: Fix ADD.S FPU instruction
  target/mips: Remove identical if/else branches

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
4 years agoMerge remote-tracking branch 'remotes/philmd-gitlab/tags/python-next-20200714' into...
Peter Maydell [Wed, 15 Jul 2020 12:04:27 +0000 (13:04 +0100)]
Merge remote-tracking branch 'remotes/philmd-gitlab/tags/python-next-20200714' into staging

Python patches for 5.1

- Reduce race conditions on QEMUMachine::shutdown()

 1. Remove the "bare except" pattern in the existing shutdown code,
    which can mask problems and make debugging difficult.
 2. Ensure that post-shutdown cleanup is always performed, even when
    graceful termination fails.
 3. Unify cleanup paths such that no matter how the VM is terminated,
    the same functions and steps are always taken to reset the object
    state.
 4. Rewrite shutdown() such that any error encountered when attempting
    a graceful shutdown will be raised as an AbnormalShutdown exception.
    The pythonic idiom is to allow the caller to decide if this is a
    problem or not.

- Modify part of the python/qemu library to comply with:

  . mypy --strict
  . pylint
  . flake8

- Script for the TCG Continuous Benchmarking project that uses
  callgrind to dissect QEMU execution into three main phases:

  . code generation
  . JIT execution
  . helpers execution

CI jobs results:
. https://cirrus-ci.com/build/5421349961203712
. https://gitlab.com/philmd/qemu/-/pipelines/166556001
. https://travis-ci.org/github/philmd/qemu/builds/708102347

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* remotes/philmd-gitlab/tags/python-next-20200714:
  python/qmp.py: add QMPProtocolError
  python/qmp.py: add casts to JSON deserialization
  python/qmp.py: Do not return None from cmd_obj
  python/qmp.py: re-absorb MonitorResponseError
  iotests.py: use qemu.qmp type aliases
  python/qmp.py: Define common types
  python/machine.py: change default wait timeout to 3 seconds
  python/machine.py: re-add sigkill warning suppression
  python/machine.py: split shutdown into hard and soft flavors
  tests/acceptance: Don't test reboot on cubieboard
  tests/acceptance: wait() instead of shutdown() where appropriate
  python/machine.py: Make wait() call shutdown()
  python/machine.py: Add a configurable timeout to shutdown()
  python/machine.py: Prohibit multiple shutdown() calls
  python/machine.py: Perform early cleanup for wait() calls, too
  python/machine.py: Add _early_cleanup hook
  python/machine.py: Close QMP socket in cleanup
  python/machine.py: consolidate _post_shutdown()
  scripts/performance: Add dissect.py script

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
4 years ago.travis.yml: skip ppc64abi32-linux-user with plugins
Alex Bennée [Tue, 14 Jul 2020 17:55:16 +0000 (18:55 +0100)]
.travis.yml: skip ppc64abi32-linux-user with plugins

We actually see failures on threadcount running without plugins:

  retry.py -n 1000 -c -- \
    ./ppc64abi32-linux-user/qemu-ppc64abi32 \
    ./tests/tcg/ppc64abi32-linux-user/threadcount

which reports:

  0: 978 times (97.80%), avg time 0.270 (0.01 varience/0.08 deviation)
  -6: 21 times (2.10%), avg time 0.336 (0.01 varience/0.12 deviation)
  -11: 1 times (0.10%), avg time 0.502 (0.00 varience/0.00 deviation)
  Ran command 1000 times, 978 passes

But when running with plugins we hit the failure a lot more often:

  0: 91 times (91.00%), avg time 0.302 (0.04 varience/0.19 deviation)
  -11: 9 times (9.00%), avg time 0.558 (0.01 varience/0.11 deviation)
  Ran command 100 times, 91 passes

The crash occurs in guest code which is the same in both pass and fail
cases. However we see various messages reported on the console about
corrupted memory lists which seems to imply the guest memory allocation
is corrupted. This lines up with the seg fault being in the guest
__libc_free function. So we think this is a guest bug which is
exacerbated by various modes of translation. If anyone has access to
real hardware to soak test the test case we could prove this properly.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20200714175516.5475-1-alex.bennee@linaro.org>

4 years agoplugins: expand the bb plugin to be thread safe and track per-cpu
Alex Bennée [Mon, 13 Jul 2020 20:04:11 +0000 (21:04 +0100)]
plugins: expand the bb plugin to be thread safe and track per-cpu

While there isn't any easy way to make the inline counts thread safe
we can ensure the callback based ones are. While we are at it we can
reduce introduce a new option ("idle") to dump a report of the current
bb and insn count each time a vCPU enters the idle state.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Robert Foley <robert.foley@linaro.org>
Cc: Dave Bort <dbort@dbort.com>
Message-Id: <20200713200415.26214-8-alex.bennee@linaro.org>

4 years agocputlb: ensure we save the IOTLB data in case of reset
Alex Bennée [Mon, 13 Jul 2020 20:04:10 +0000 (21:04 +0100)]
cputlb: ensure we save the IOTLB data in case of reset

Any write to a device might cause a re-arrangement of memory
triggering a TLB flush and potential re-size of the TLB invalidating
previous entries. This would cause users of qemu_plugin_get_hwaddr()
to see the warning:

  invalid use of qemu_plugin_get_hwaddr

because of the failed tlb_lookup which should always succeed. To
prevent this we save the IOTLB data in case it is later needed by a
plugin doing a lookup.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200713200415.26214-7-alex.bennee@linaro.org>

4 years agotests/plugins: don't unconditionally add -Wpsabi
Alex Bennée [Mon, 13 Jul 2020 20:04:09 +0000 (21:04 +0100)]
tests/plugins: don't unconditionally add -Wpsabi

Not all compilers support the -Wpsabi (clang-9 in my case). To handle
this gracefully we pare back the shared build machinery so the
Makefile is relatively "standalone". We still take advantage of
config-host.mak as configure has done a bunch of probing for us but
that is it.

Fixes: bac8d222a
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20200713200415.26214-6-alex.bennee@linaro.org>

4 years agofpu/softfloat: fix up float16 nan recognition
LIU Zhiwei [Mon, 13 Jul 2020 20:04:08 +0000 (21:04 +0100)]
fpu/softfloat: fix up float16 nan recognition

Signed-off-by: LIU Zhiwei <zhiwei_liu@c-sky.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200712234521.3972-2-zhiwei_liu@c-sky.com>
Message-Id: <20200713200415.26214-5-alex.bennee@linaro.org>

4 years agogitlab-ci/containers: Add missing wildcard where we should look for changes
Thomas Huth [Mon, 13 Jul 2020 18:22:35 +0000 (20:22 +0200)]
gitlab-ci/containers: Add missing wildcard where we should look for changes

The tests/docker/* wildcard seems to only match the files that are directly
in the tests/docker folder - but changes to the files in the directory
tests/docker/dockerfiles are currently ignored. Seems like we need a
separate entry to match the files in that folder. With this wildcard added,
the stages now get re-run successfully when something in the dockerfiles
has been changed.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20200713182235.30379-1-thuth@redhat.com>

4 years agodocker.py: fix fetching of FROM layers
Alex Bennée [Mon, 13 Jul 2020 20:04:07 +0000 (21:04 +0100)]
docker.py: fix fetching of FROM layers

This worked on a system that was already bootstrapped because the
stage 2 images already existed even if they wouldn't be used. What we
should have pulled down was the FROM line containers first because
building on gitlab doesn't have the advantage of using our build
system to build the pre-requisite bits.

We still pull the image we want to build just in case we can use the
cached data.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20200713200415.26214-4-alex.bennee@linaro.org>

4 years agotests/docker: Remove the libssh workaround from the ubuntu 20.04 image
Thomas Huth [Mon, 13 Jul 2020 20:04:06 +0000 (21:04 +0100)]
tests/docker: Remove the libssh workaround from the ubuntu 20.04 image

The libssh problem only exists in Ubuntu 18.04 - we can enable it
in 20.04 again.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20200713185237.9419-1-thuth@redhat.com>
Message-Id: <20200713200415.26214-3-alex.bennee@linaro.org>

4 years agodocs/devel: fix grammar in multi-thread-tcg
Alex Bennée [Mon, 13 Jul 2020 20:04:12 +0000 (21:04 +0100)]
docs/devel: fix grammar in multi-thread-tcg

Review comment came just too late ;-)

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20200713200415.26214-9-alex.bennee@linaro.org>

4 years agoMerge remote-tracking branch 'remotes/philmd-gitlab/tags/sdcard-CVE-2020-13253-pull...
Peter Maydell [Wed, 15 Jul 2020 08:06:55 +0000 (09:06 +0100)]
Merge remote-tracking branch 'remotes/philmd-gitlab/tags/sdcard-CVE-2020-13253-pull-request' into staging

Fix CVE-2020-13253

By using invalidated address, guest can do out-of-bounds accesses.
These patches fix the issue by only allowing SD card image sizes
power of 2, and not switching to SEND_DATA state when the address
is invalid (out of range).

This issue was found using QEMU fuzzing mode (using --enable-fuzzing,
see docs/devel/fuzzing.txt) and reported by Alexander Bulekov.

Reproducer:
  https://bugs.launchpad.net/qemu/+bug/1880822/comments/1

CI jobs results:
. https://cirrus-ci.com/build/5157142548185088
. https://gitlab.com/philmd/qemu/-/pipelines/166381731
. https://travis-ci.org/github/philmd/qemu/builds/707956535

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* remotes/philmd-gitlab/tags/sdcard-CVE-2020-13253-pull-request:
  hw/sd/sdcard: Do not switch to ReceivingData if address is invalid
  hw/sd/sdcard: Update coding style to make checkpatch.pl happy
  hw/sd/sdcard: Do not allow invalid SD card sizes
  hw/sd/sdcard: Simplify realize() a bit
  hw/sd/sdcard: Restrict Class 6 commands to SCSD cards
  tests/acceptance/boot_linux: Expand SD card image to power of 2
  tests/acceptance/boot_linux: Tag tests using a SD card with 'device:sd'
  docs/orangepi: Add instructions for resizing SD image to power of two
  MAINTAINERS: Cc qemu-block mailing list

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
4 years agopython/qmp.py: add QMPProtocolError
John Snow [Fri, 10 Jul 2020 05:22:10 +0000 (01:22 -0400)]
python/qmp.py: add QMPProtocolError

In the case that we receive a reply but are unable to understand it,
use this exception name to indicate that case.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200710052220.3306-7-jsnow@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
4 years agopython/qmp.py: add casts to JSON deserialization
John Snow [Fri, 10 Jul 2020 05:22:09 +0000 (01:22 -0400)]
python/qmp.py: add casts to JSON deserialization

mypy and python type hints are not powerful enough to properly describe
JSON messages in Python 3.6. The best we can do, generally, is describe
them as Dict[str, Any].

Add casts to coerce this type for static analysis; but do NOT enforce
this type at runtime in any way.

Note: Python 3.8 adds a TypedDict construct which allows for the
description of more arbitrary Dictionary shapes. There is a third-party
module, "Pydantic", which is compatible with 3.6 that can be used
instead of the JSON library that parses JSON messages to fully-typed
Python objects, and may be preferable in some cases.

(That is well beyond the scope of this commit or series.)

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200710052220.3306-6-jsnow@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
4 years agopython/qmp.py: Do not return None from cmd_obj
John Snow [Fri, 10 Jul 2020 05:22:08 +0000 (01:22 -0400)]
python/qmp.py: Do not return None from cmd_obj

This makes typing the qmp library difficult, as it necessitates wrapping
Optional[] around the type for every return type up the stack. At some
point, it becomes difficult to discern or remember why it's None instead
of the expected object.

Use the python exception system to tell us exactly why we didn't get an
object. Remove this special-cased return.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200710052220.3306-5-jsnow@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
4 years agopython/qmp.py: re-absorb MonitorResponseError
John Snow [Fri, 10 Jul 2020 05:22:07 +0000 (01:22 -0400)]
python/qmp.py: re-absorb MonitorResponseError

When I initially split this out, I considered this more of a machine
error than a QMP protocol error, but I think that's misguided.

Move this back to qmp.py and name it QMPResponseError. Convert
qmp.command() to use this exception type.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200710052220.3306-4-jsnow@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
4 years agoiotests.py: use qemu.qmp type aliases
John Snow [Fri, 10 Jul 2020 05:22:06 +0000 (01:22 -0400)]
iotests.py: use qemu.qmp type aliases

iotests.py should use the type definitions from qmp.py instead of its
own.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200710052220.3306-3-jsnow@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
4 years agopython/qmp.py: Define common types
John Snow [Fri, 10 Jul 2020 05:22:05 +0000 (01:22 -0400)]
python/qmp.py: Define common types

Define some common types that we'll need to annotate a lot of other
functions going forward.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200710052220.3306-2-jsnow@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
4 years agopython/machine.py: change default wait timeout to 3 seconds
John Snow [Fri, 10 Jul 2020 05:06:49 +0000 (01:06 -0400)]
python/machine.py: change default wait timeout to 3 seconds

Machine.wait() does not appear to be used except in the acceptance tests,
and an infinite timeout by default in a test suite is not the most helpful.

Change it to 3 seconds, like the default shutdown timeout.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Tested-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20200710050649.32434-13-jsnow@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
4 years agopython/machine.py: re-add sigkill warning suppression
John Snow [Fri, 10 Jul 2020 05:06:48 +0000 (01:06 -0400)]
python/machine.py: re-add sigkill warning suppression

If the user kills QEMU on purpose, we don't need to warn
them about that having happened: they know already.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20200710050649.32434-12-jsnow@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
4 years agopython/machine.py: split shutdown into hard and soft flavors
John Snow [Fri, 10 Jul 2020 05:06:47 +0000 (01:06 -0400)]
python/machine.py: split shutdown into hard and soft flavors

This is done primarily to avoid the 'bare except' pattern, which
suppresses all exceptions during shutdown and can obscure errors.

Replace this with a pattern that isolates the different kind of shutdown
paradigms (_hard_shutdown and _soft_shutdown), and a new fallback shutdown
handler (_do_shutdown) that gracefully attempts one before the other.

This split now also ensures that no matter what happens,
_post_shutdown() is always invoked.

shutdown() changes in behavior such that if it attempts to do a graceful
shutdown and is unable to, it will now always raise an exception to
indicate this. This can be avoided by the test writer in three ways:

1. If the VM is expected to have already exited or is in the process of
exiting, wait() can be used instead of shutdown() to clean up resources
instead. This helps avoid race conditions in shutdown.

2. If a test writer is expecting graceful shutdown to fail, shutdown
should be called in a try...except block.

3. If the test writer has no interest in performing a graceful shutdown
at all, kill() can be used instead.

Handling shutdown in this way makes it much more explicit which type of
shutdown we want and allows the library to report problems with this
process.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Tested-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20200710050649.32434-11-jsnow@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
4 years agotests/acceptance: Don't test reboot on cubieboard
John Snow [Fri, 10 Jul 2020 05:06:46 +0000 (01:06 -0400)]
tests/acceptance: Don't test reboot on cubieboard

cubieboard does not have a functioning reboot, it halts and QEMU does
not exit.

vm.shutdown() is modified in a forthcoming patch that makes it less tolerant
of race conditions on shutdown; tests should consciously decide to WAIT
or to SHUTDOWN qemu.

So long as this test is attempting to reboot, the correct choice would
be to WAIT for the VM to exit. However, since that's broken, we should
SHUTDOWN instead.

SHUTDOWN is indeed what already happens when the test performs teardown,
however, if anyone fixes cubieboard reboot in the future, this test will
develop a new race condition that might be hard to debug.

Therefore: remove the reboot test and make it obvious that the VM is
still running when the test concludes, where the test teardown will do
the right thing.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Tested-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20200710050649.32434-10-jsnow@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
4 years agotests/acceptance: wait() instead of shutdown() where appropriate
John Snow [Fri, 10 Jul 2020 05:06:45 +0000 (01:06 -0400)]
tests/acceptance: wait() instead of shutdown() where appropriate

When issuing 'reboot' to a VM with the no-reboot option, that VM will
exit. When then issuing a shutdown command, the cleanup may race.

Add calls to vm.wait() which will gracefully mark the VM as having
exited. Subsequent vm.shutdown() calls in generic tearDown code will not
race when called after completion of the call.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Tested-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20200710050649.32434-9-jsnow@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
4 years agopython/machine.py: Make wait() call shutdown()
John Snow [Fri, 10 Jul 2020 05:06:44 +0000 (01:06 -0400)]
python/machine.py: Make wait() call shutdown()

At this point, shutdown(has_quit=True) and wait() do essentially the
same thing; they perform cleanup without actually instructing QEMU to
quit.

Define one in terms of the other.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Tested-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20200710050649.32434-8-jsnow@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
4 years agopython/machine.py: Add a configurable timeout to shutdown()
John Snow [Fri, 10 Jul 2020 05:06:43 +0000 (01:06 -0400)]
python/machine.py: Add a configurable timeout to shutdown()

Three seconds is hardcoded. Use it as a default parameter instead, and use that
value for both waits that may occur in the function.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20200710050649.32434-7-jsnow@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
4 years agopython/machine.py: Prohibit multiple shutdown() calls
John Snow [Fri, 10 Jul 2020 05:06:42 +0000 (01:06 -0400)]
python/machine.py: Prohibit multiple shutdown() calls

If the VM is not launched, don't try to shut it down. As a change,
_post_shutdown now unconditionally also calls _early_cleanup in order to
offer comprehensive object cleanup in failure cases.

As a courtesy, treat it as a NOP instead of rejecting it as an
error. This is slightly nicer for acceptance tests where vm.shutdown()
is issued unconditionally in tearDown callbacks.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200710050649.32434-6-jsnow@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
4 years agopython/machine.py: Perform early cleanup for wait() calls, too
John Snow [Fri, 10 Jul 2020 05:06:41 +0000 (01:06 -0400)]
python/machine.py: Perform early cleanup for wait() calls, too

This is primarily for consistency, and is a step towards wait() and
shutdown() sharing the same implementation so that the two cleanup paths
cannot diverge.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Tested-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20200710050649.32434-5-jsnow@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
4 years agopython/machine.py: Add _early_cleanup hook
John Snow [Fri, 10 Jul 2020 05:06:40 +0000 (01:06 -0400)]
python/machine.py: Add _early_cleanup hook

Some parts of cleanup need to occur prior to shutdown, otherwise
shutdown might break. Move this into a suitably named method/callback.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Tested-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20200710050649.32434-4-jsnow@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
4 years agopython/machine.py: Close QMP socket in cleanup
John Snow [Fri, 10 Jul 2020 05:06:39 +0000 (01:06 -0400)]
python/machine.py: Close QMP socket in cleanup

It's not important to do this before waiting for the process to exit, so
it can be done during generic post-shutdown cleanup.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Tested-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20200710050649.32434-3-jsnow@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
4 years agopython/machine.py: consolidate _post_shutdown()
John Snow [Fri, 10 Jul 2020 05:06:38 +0000 (01:06 -0400)]
python/machine.py: consolidate _post_shutdown()

Move more cleanup actions into _post_shutdown. As a change, if QEMU
should so happen to be terminated during a call to wait(), that event
will now be logged.

This is not likely to occur during normative use.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Tested-by: Cleber Rosa <crosa@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200710050649.32434-2-jsnow@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
4 years agoscripts/performance: Add dissect.py script
Ahmed Karaman [Thu, 9 Jul 2020 05:20:55 +0000 (07:20 +0200)]
scripts/performance: Add dissect.py script

Python script that dissects QEMU execution into three main phases:
code generation, JIT execution and helpers execution.

Syntax:
dissect.py [-h] -- <qemu executable> [<qemu executable options>] \
                 <target executable> [<target executable options>]

[-h] - Print the script arguments help message.

Example of usage:
dissect.py -- qemu-arm coulomb_double-arm

Example output:
Total Instructions:        4,702,865,362

Code Generation:             115,819,309  2.463%
JIT Execution:             1,081,980,528 23.007%
Helpers:                   3,505,065,525 74.530%

Signed-off-by: Ahmed Karaman <ahmedkhaledkaraman@gmail.com>
Reviewed-by: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200709052055.2650-2-ahmedkhaledkaraman@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
4 years agoMerge remote-tracking branch 'remotes/mdroth/tags/qga-pull-2020-07-13-tag' into staging
Peter Maydell [Tue, 14 Jul 2020 20:21:58 +0000 (21:21 +0100)]
Merge remote-tracking branch 'remotes/mdroth/tags/qga-pull-2020-07-13-tag' into staging

qemu-ga patch queue for hard-freeze

* fix erroneously reporting stale hostname in guest-get-host-name
* fix regression where guest-shutdown asserts when called
* fix race condition with guest-fs-freeze/thaw on w32

# gpg: Signature made Tue 14 Jul 2020 05:47:11 BST
# gpg:                using RSA key CEACC9E15534EBABB82D3FA03353C9CEF108B584
# gpg:                issuer "mdroth@linux.vnet.ibm.com"
# gpg: Good signature from "Michael Roth <flukshun@gmail.com>" [full]
# gpg:                 aka "Michael Roth <mdroth@utexas.edu>" [full]
# gpg:                 aka "Michael Roth <mdroth@linux.vnet.ibm.com>" [full]
# Primary key fingerprint: CEAC C9E1 5534 EBAB B82D  3FA0 3353 C9CE F108 B584

* remotes/mdroth/tags/qga-pull-2020-07-13-tag:
  qga: Use qemu_get_host_name() instead of g_get_host_name()
  util: Introduce qemu_get_host_name()
  qga: fix assert regression on guest-shutdown
  qga-win: Fix QGA VSS Provider service stop failure

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>