OSDN Git Service
Dmitry Fleytman [Sat, 9 Mar 2013 09:21:04 +0000 (11:21 +0200)]
Common definitions for VMWARE devices
Signed-off-by: Dmitry Fleytman <dmitry@daynix.com>
Signed-off-by: Yan Vugenfirer <yan@daynix.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Dmitry Fleytman [Sat, 9 Mar 2013 09:21:03 +0000 (11:21 +0200)]
net: iovec checksum calculator
Signed-off-by: Dmitry Fleytman <dmitry@daynix.com>
Signed-off-by: Yan Vugenfirer <yan@daynix.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Dmitry Fleytman [Sat, 9 Mar 2013 09:21:02 +0000 (11:21 +0200)]
Checksum-related utility functions
net_checksum_add_cont()
checksum calculation for scattered data with odd chunk sizes
net_raw_checksum()
checksum calculation for a buffer
Signed-off-by: Dmitry Fleytman <dmitry@daynix.com>
Signed-off-by: Yan Vugenfirer <yan@daynix.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Stefan Hajnoczi [Wed, 27 Feb 2013 14:05:47 +0000 (15:05 +0100)]
net: use socket_set_nodelay() for -netdev socket
Reduce -netdev socket latency by disabling the Nagle algorithm on
SOCK_STREAM sockets in net/socket.c. Since we are tunelling Ethernet
over TCP we shouldn't artificially delay outgoing packets, let the guest
decide packet scheduling.
I already get sub-millisecond -netdev socket ping times on localhost, so
there was no measurable difference in my testing. This won't hurt
though and may improve remote socket performance.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Benoit Canet <benoit@irqsave.net>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Anthony Green [Sun, 24 Mar 2013 04:43:38 +0000 (00:43 -0400)]
Remove device_tree.o from hw/moxie/Makefile.objs.
Here's a fix for the build problem identified by Aurelien Jarno here:
http://lists.gnu.org/archive/html/qemu-devel/2013-03/msg04177.html
Signed-off-by: Anthony Green <green@moxielogic.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Richard Henderson [Thu, 21 Mar 2013 16:13:33 +0000 (09:13 -0700)]
tcg-optimize: Fold sub r,0,x to neg r,x
Cc: Blue Swirl <blauwirbel@gmail.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Richard Henderson [Tue, 19 Mar 2013 19:11:56 +0000 (12:11 -0700)]
target-i386: Don't modify env->eflags around cpu_dump_state
We can compute the value in cpu_dump_state anyway, and gratuitous
modifications to eflags creates heisenbugs.
Cc: Blue Swirl <blauwirbel@gmail.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Richard Henderson [Tue, 19 Mar 2013 16:40:53 +0000 (09:40 -0700)]
target-i386: Fix flags computation for ADOX
When starting from CC_OP_DYNAMIC, and issuing adox before adcx,
a typo used the wrong value for the resulting CC_OP.
Cc: Blue Swirl <blauwirbel@gmail.com>
Reported-by: Torbjorn Granlund <tg@gmplib.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Anthony Green [Mon, 18 Mar 2013 19:49:25 +0000 (15:49 -0400)]
Add top level changes for moxie
Signed-off-by: Anthony Green <green@moxielogic.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Anthony Green [Mon, 18 Mar 2013 19:49:24 +0000 (15:49 -0400)]
Add sample moxie system
Signed-off-by: Anthony Green <green@moxielogic.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Anthony Green [Mon, 18 Mar 2013 19:49:23 +0000 (15:49 -0400)]
Add moxie disassembler
Signed-off-by: Anthony Green <green@moxielogic.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Anthony Green [Mon, 18 Mar 2013 19:49:22 +0000 (15:49 -0400)]
Add moxie target code
Signed-off-by: Anthony Green <green@moxielogic.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Blue Swirl [Sat, 23 Mar 2013 14:23:26 +0000 (14:23 +0000)]
Merge branch 'for-upstream' of git://github.com/mwalle/qemu
* 'for-upstream' of git://github.com/mwalle/qemu:
configure: rename OpenGL feature to GLX
configure: proper OpenGL/GLX probe
target-lm32: use HELPER() macro
target-lm32: flush tlb after clearing env
target-lm32: remove dead code
target-lm32: fix cmpgui and cmpgeui opcodes
tests: tcg: lm32: add more test cases
target-lm32: don't log cpu state in translation
lm32_uart: fix receive buffering
milkymist-uart: fix receive buffering
lm32-dis: fix NULL pointer dereference
target-lm32: fix debug memory access
Aurelien Jarno [Fri, 22 Mar 2013 20:43:57 +0000 (21:43 +0100)]
Merge branch 'ppc-for-upstream' of git://github.com/agraf/qemu
* 'ppc-for-upstream' of git://github.com/agraf/qemu: (58 commits)
target-ppc: Use NARROW_MODE macro for tlbie
target-ppc: Use NARROW_MODE macro for addresses
target-ppc: Use NARROW_MODE macro for comparisons
target-ppc: Use NARROW_MODE macro for branches
target-ppc: Fix add and subf carry generation in narrow mode
target-ppc: Use QOM method dispatch for MMU fault handling
target-ppc: Move ppc tlb_fill implementation into mmu_helper.c
target-ppc: Split user only code out of mmu_helper.c
mmu-hash64: Implement Virtual Page Class Key Protection
mmu-hash*: Merge translate and fault handling functions
mmu-hash*: Don't use full ppc_hash{32, 64}_translate() path for get_phys_page_debug()
mmu-hash*: Correctly mask RPN from hash PTE
mmu-hash*: Clean up real address calculation
mmu-hash*: Clean up PTE flags update
mmu-hash64: Factor SLB N bit into permissions bits
mmu-hash*: Clean up permission checking
mmu-hash32: Remove nx from context structure
mmu-hash*: Don't update PTE flags when permission is denied
mmu-hash32: Don't look up page tables on BAT permission error
mmu-hash32: Cleanup BAT lookup
...
Yeongkyoon Lee [Fri, 22 Mar 2013 12:50:17 +0000 (21:50 +0900)]
tcg: Fix occasional TCG broken problem when ldst optimization enabled
is_tcg_gen_code() checks the upper limit of TCG generated code range wrong, so
that TCG could get broken occasionally only when CONFIG_QEMU_LDST_OPTIMIZATION
enabled. The reason is code_gen_buffer_max_size does not cover the upper range
up to (TCG_MAX_OP_SIZE * OPC_BUF_SIZE), thus code_gen_buffer_max_size should be
modified to code_gen_buffer_size.
CC: qemu-stable@nongnu.org
Signed-off-by: Yeongkyoon Lee <yeongkyoon.lee@samsung.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Anthony Liguori [Fri, 22 Mar 2013 18:08:01 +0000 (13:08 -0500)]
Merge remote-tracking branch 'kwolf/for-anthony' into staging
# By Kevin Wolf (12) and Peter Lieven (2)
# Via Kevin Wolf
* kwolf/for-anthony:
nbd: Check against invalid option combinations
nbd: Use default port if only host is specified
block: Allow omitting the file name when using driver-specific options
block: Make find_image_format safe with NULL filename
block: Rename variable to avoid shadowing
block: Introduce .bdrv_parse_filename callback
nbd: Accept -drive options for the network connection
nbd: Remove unused functions
nbd: Keep hostname and port separate
qemu-socket: Make socket_optslist public
block: Pass bdrv_file_open() options to block drivers
block: Add options QDict to bdrv_file_open() prototypes
block: complete all IOs before resizing a device
Revert "block: complete all IOs before .bdrv_truncate"
Anthony Liguori [Fri, 22 Mar 2013 18:05:57 +0000 (13:05 -0500)]
Merge remote-tracking branch 'stefanha/trivial-patches' into staging
# By liguang (2) and others
# Via Stefan Hajnoczi
* stefanha/trivial-patches:
qdev: remove redundant abort()
gitignore: ignore more files
Use proper term in TCG README
serial: Fix debug format strings
Fix typos and misspellings
Advertise --libdir in configure --help output
memory: fix a bug of detection of memory region collision
MinGW: Replace setsockopt by qemu_setsocketopt
Anthony Liguori [Fri, 22 Mar 2013 18:05:50 +0000 (13:05 -0500)]
Merge remote-tracking branch 'cohuck/virtio-ccw-upstr' into staging
# By Cornelia Huck
# Via Cornelia Huck
* cohuck/virtio-ccw-upstr:
virtio-ccw, s390-virtio: Use generic virtio-blk macro.
s390-virtio, virtio-ccw: Add config_wce for virtio-blk.
virtio-ccw: Add missing blk chs properties.
Kevin Wolf [Wed, 20 Mar 2013 18:23:23 +0000 (19:23 +0100)]
nbd: Check against invalid option combinations
A file name may only specified if no host or socket path is specified.
The latter two may not appear at the same time either.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Kevin Wolf [Mon, 18 Mar 2013 15:56:05 +0000 (16:56 +0100)]
nbd: Use default port if only host is specified
The URL method already takes care to apply the default port when none is
specfied. Directly specifying driver-specific options required the port
number until now. Allow leaving it out and apply the default.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Kevin Wolf [Mon, 18 Mar 2013 15:40:51 +0000 (16:40 +0100)]
block: Allow omitting the file name when using driver-specific options
After this patch, using -drive with an empty file name continues to open
the file if driver-specific options are used. If no driver-specific
options are specified, the semantics stay as it was: It defines a drive
without an inserted medium.
In order to achieve this, bdrv_open() must be made safe to work with a
NULL filename parameter. The assumption that is made is that only block
drivers which implement bdrv_parse_filename() support using driver
specific options and could therefore work without a filename. These
drivers must make sure to cope with NULL in their implementation of
.bdrv_open() (this is only NBD for now). For all other drivers, the
block layer code will make sure to error out before calling into their
code - they can't possibly work without a filename.
Now an NBD connection can be opened like this:
qemu-system-x86_64 -drive file.driver=nbd,file.port=1234,file.host=::1
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Kevin Wolf [Mon, 18 Mar 2013 15:20:27 +0000 (16:20 +0100)]
block: Make find_image_format safe with NULL filename
In order to achieve this, the .bdrv_probe callbacks of all drivers must
cope with this. The DMG driver is the only one that bases its decision
on the filename and it needs to be changed.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Kevin Wolf [Mon, 18 Mar 2013 15:17:44 +0000 (16:17 +0100)]
block: Rename variable to avoid shadowing
bdrv_open() uses two different variables called options. Rename one of
them to avoid confusion and to allow the outer one to be accessed
everywhere.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Kevin Wolf [Fri, 15 Mar 2013 17:47:22 +0000 (18:47 +0100)]
block: Introduce .bdrv_parse_filename callback
If a driver needs structured data and not just a string, it can provide
a .bdrv_parse_filename callback now that parses the command line string
into separate options. Keeping this separate from .bdrv_open_filename
ensures that the preferred way of directly specifying the options always
works as well if parsing the string works.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Kevin Wolf [Thu, 7 Mar 2013 15:15:11 +0000 (16:15 +0100)]
nbd: Accept -drive options for the network connection
The existing parsers for the file name now parse everything into the
bdrv_open() options QDict. Instead of using these parsers, you can now
directly specify the options on the command line, like this:
qemu-system-x86_64 -drive file=nbd:,file.port=1234,file.host=::1
Clearly the file=... part could use further improvement, but it's a
start.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Kevin Wolf [Fri, 15 Mar 2013 15:46:38 +0000 (16:46 +0100)]
nbd: Remove unused functions
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Kevin Wolf [Fri, 15 Mar 2013 10:55:29 +0000 (11:55 +0100)]
nbd: Keep hostname and port separate
The NBD block supports an URL syntax, for which a URL parser returns
separate hostname and port fields. It also supports the traditional qemu
syntax encoded in a filename. Until now, after parsing the URL to get
each piece of information, a new string is built to be fed to socket
functions.
Instead of building a string in the URL case that is immediately parsed
again, parse the string in both cases and use the QemuOpts interface to
qemu-sockets.c.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Kevin Wolf [Fri, 15 Mar 2013 16:14:24 +0000 (17:14 +0100)]
qemu-socket: Make socket_optslist public
Allow other users to create the QemuOpts needed for inet_connect_opts().
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Kevin Wolf [Wed, 6 Mar 2013 11:20:31 +0000 (12:20 +0100)]
block: Pass bdrv_file_open() options to block drivers
Specify -drive file.option=... on the command line to pass the option to
the protocol instead of the format driver.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Kevin Wolf [Wed, 6 Mar 2013 10:52:48 +0000 (11:52 +0100)]
block: Add options QDict to bdrv_file_open() prototypes
The new parameter is unused yet.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Peter Lieven [Mon, 11 Mar 2013 10:04:24 +0000 (11:04 +0100)]
block: complete all IOs before resizing a device
this patch ensures that all pending IOs are completed
before a device is resized. this is especially important
if a device is shrinked as it the bdrv_check_request()
result is invalidated.
Signed-off-by: Peter Lieven <pl@kamp.de>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Peter Lieven [Mon, 11 Mar 2013 10:03:28 +0000 (11:03 +0100)]
Revert "block: complete all IOs before .bdrv_truncate"
brdv_truncate() is also called from readv/writev commands on self-
growing file based storage. this will result in requests waiting
for theirselves to complete.
This reverts commit
9a665b2b8640e464f0a778216fc2dca8d02acf33.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
liguang [Fri, 22 Mar 2013 08:44:14 +0000 (16:44 +0800)]
qdev: remove redundant abort()
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: liguang <lig.fnst@cn.fujitsu.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
liguang [Fri, 22 Mar 2013 08:44:13 +0000 (16:44 +0800)]
gitignore: ignore more files
ignore *.patch, *.gcda, *.gcno
Signed-off-by: liguang <lig.fnst@cn.fujitsu.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
陳韋任 (Wei-Ren Chen) [Wed, 20 Mar 2013 03:42:08 +0000 (11:42 +0800)]
Use proper term in TCG README
In TCG, "target" means the host architecture for which TCG generates
the code. Using "guest" rather than "target" to make the document more
consistent.
Signed-off-by: Chen Wei-Ren <chenwj@iis.sinica.edu.tw>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Richard Henderson [Thu, 21 Mar 2013 10:01:49 +0000 (10:01 +0000)]
target-ppc: Use NARROW_MODE macro for tlbie
Removing conditional compilation in the process.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Alexander Graf <agraf@suse.de>
Richard Henderson [Thu, 21 Mar 2013 10:01:48 +0000 (10:01 +0000)]
target-ppc: Use NARROW_MODE macro for addresses
Removing conditional compilation in the process.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Alexander Graf <agraf@suse.de>
Richard Henderson [Thu, 21 Mar 2013 10:01:47 +0000 (10:01 +0000)]
target-ppc: Use NARROW_MODE macro for comparisons
Removing conditional compilation in the process.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Alexander Graf <agraf@suse.de>
Richard Henderson [Thu, 21 Mar 2013 10:01:46 +0000 (10:01 +0000)]
target-ppc: Use NARROW_MODE macro for branches
Removing conditional compilation in the process.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Alexander Graf <agraf@suse.de>
Richard Henderson [Thu, 21 Mar 2013 10:01:45 +0000 (10:01 +0000)]
target-ppc: Fix add and subf carry generation in narrow mode
The set of computations used in
b5a73f8d8a57e940f9bbeb399a9e47897522ee9a
are only valid if the current word size == target_long size. This failed
to take ppc64 in 32-bit (narrow) mode into account.
Add a NARROW_MODE macro to avoid conditional compilation.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Wed, 13 Mar 2013 00:40:33 +0000 (11:40 +1100)]
target-ppc: Use QOM method dispatch for MMU fault handling
After previous cleanups, the many scattered checks of env->mmu_model in
the ppc MMU implementation have, at least for "classic" hash MMUs been
reduced (almost) to a single switch at the top of
cpu_ppc_handle_mmu_fault().
An explicit switch is still a pretty ugly way of handling this though. Now
that Andreas Färber's CPU QOM cleanups for ppc have gone in, it's quite
straightforward to instead make the handle_mmu_fault function a QOM method
on the CPU object.
This patch implements such a scheme, initializing the method pointer at
the same time as the mmu_model variable. We need to keep the latter around
for now, because of the MMU types (BookE, 4xx, et al) which haven't been
converted to the new scheme yet, and also for a few other uses. It would
be good to clean those up eventually.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:49 +0000 (00:31 +0000)]
target-ppc: Move ppc tlb_fill implementation into mmu_helper.c
For softmmu builds the interface from the generic code to the target
specific MMU implementation is through the tlb_fill() function. For ppc
this is currently in mem_helper.c, whereas it would make more sense in
mmu_helper.c. This patch moves it, which also allows
cpu_ppc_handle_mmu_fault() to become a local function in mmu_helper.c
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:48 +0000 (00:31 +0000)]
target-ppc: Split user only code out of mmu_helper.c
mmu_helper.c is, for obvious reasons, almost entirely concerned with
softmmu builds of qemu. However, it does contain one stub function which
is used when CONFIG_USER_ONLY=y - the user only versoin of
cpu_ppc_handle_mmu_fault, which always triggers an exception. The entire
rest of the file is surrounded by #if !defined(CONFIG_USER_ONLY).
We clean this up by moving the user only stub into its own new file,
removing the ifdefs and building mmu_helper.c only when CONFIG_SOFTMMU
is set. This also lets us remove the #define of cpu_handle_mmu_fault to
cpu_ppc_handle_mmu_fault - that name is only used from generic code for
user only - so we just name our split user version by the generic name.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:47 +0000 (00:31 +0000)]
mmu-hash64: Implement Virtual Page Class Key Protection
Version 2.06 of the Power architecture describes an additional page
protection mechanism. Each virtual page has a "class" (0-31) recorded in
the PTE. The AMR register contains bits which can prohibit reads and/or
writes on a class by class basis. Interestingly, the AMR is userspace
readable and writable, however user mode writes are masked by the contents
of the UAMOR which is privileged.
This patch implements this protection mechanism, along with the AMR and
UAMOR SPRs. The architecture also specifies a hypervisor-privileged AMOR
register which masks user and supervisor writes to the AMR and UAMOR. We
leave this out for now, since we don't at present model hypervisor mode
correctly in any case.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
[agraf: fix 32-bit hosts]
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:46 +0000 (00:31 +0000)]
mmu-hash*: Merge translate and fault handling functions
ppc_hash{32,64}_handle_mmu_fault() is now the only caller of
ppc_hash{32,64{_translate(), so this patch combines them together. This
means that instead of one returning a variety of non-obvious error codes
which then get translated into the various mmu exception conditions, we can
just generate the exceptions as we discover problems in the translation
path. This also removes the last usage of mmu_ctx_hash{32,64}.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:45 +0000 (00:31 +0000)]
mmu-hash*: Don't use full ppc_hash{32, 64}_translate() path for get_phys_page_debug()
Currently the hash mmu versionsof get_phys_page_debug() use the same
ppc64_hash64_translate() function to do the translation logic as the normal
mm fault handler code.
That sounds like a good idea, but has some complications. The debug path
doesn't need, or even want some parts of the full translation path, like
permissions checking. Furthermore, the pte flags update included in the
normal path means that the debug call is not quite side effect free.
This patch, therefore, reimplements get_phys_page_debug as the minimal
required subset of the full translation path.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>`z
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:44 +0000 (00:31 +0000)]
mmu-hash*: Correctly mask RPN from hash PTE
BEHAVIOUR CHANGE
At present we take the whole of word 1 of the hash PTE as the real page
number used to calculate the translated address. This is incorrect,
because it leaves the flags from the low bits of PTE word 1 in place in the
rpm. We mostly get away with that because the value is later masked by
TARGET_PAGE_MASK.
More recent 64-bit CPUs also have a small number of flag bits (PP0 and
KEY) in the top bits of PTE word 1. Any guest which used those bits would
fail with the current code.
This patch fixes the problem by correctly masking out the RPN field of
PTE word 1. This is safe, even for older CPUs which didn't have PP0 and
KEY, because although the RPN notionally extended to the very top of PTE
word 1, none of those CPUs actually implemented that many real address
bits.
We add analogous masking to the 32-bit code, even though it also doesn't
have the high flag bits, for consistency and clarity.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:43 +0000 (00:31 +0000)]
mmu-hash*: Clean up real address calculation
More recent 64-bit hash MMUs support multiple page sizes, and PTEs for
large pages only include the offset of the whole large page. But the qemu
tlb only handles pages of the base size (4k) so we need to break up the
large pages into 4k pieces for the qemu tlb. To do that we have a somewhat
awkward piece of code that adds the folds address bits 4k and the page size
from the virtual address into the real address from the pte.
This patch simplifies this redefining the raddr output of
ppc_hash64_translate() to be the full real address of the faulting address,
rather than just the (4k) page offset. Computing that turns out to be
simpler, and is fine for the caller, since it already masks with
TARGET_PAGE_MASK before inserting into the qemu tlb.
The multiple page size complication doesn't exist for 32-bit hash mmus, but
we make an analogous cleanup there for consistency.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:42 +0000 (00:31 +0000)]
mmu-hash*: Clean up PTE flags update
Currently the ppc_hash{32,64}_pte_update_flags() helper functions update a
PTE's referenced and changed bits as necessary to reflect the access. It
is somewhat long winded, though. This patch open codes them in their
(single) callers, in a simpler way.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:41 +0000 (00:31 +0000)]
mmu-hash64: Factor SLB N bit into permissions bits
BEHAVIOUR CHANGE
Currently, for 64-bit hash mmu, the execute protection bit placed into the
qemu tlb is based only on the N (No execute) bit from the PTE. However,
No Execute can also be set at the segment level. We do check this on
execute faults, but this still means we could incorrectly allow execution
of code from a No Execute segment, if a prior read or write fault caused
the page to be loaded into the qemu tlb with PROT_EXEC set.
To correct this, we (re-)check the segment level no execute permission when
generating the protection bits for the qemu tlb.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:40 +0000 (00:31 +0000)]
mmu-hash*: Clean up permission checking
Currently checking of PTE permission bits is split messily amongst
ppc_hash{32,64}_pp_check(), ppc_hash{32,64}_check_prot() and their callers.
This patch cleans this up to have the new function
ppc_hash{32,64}_pte_prot() compute the page permissions from the SLBE (for
64-bit) or segment register (32-bit) and the pte. A greatly simplified
version of the actual permissions check is then open coded in the callers.
The 32-bit version of ppc_hash32_pte_prot() is implemented in terms of
ppc_hash32_pp_prot(), a renamed and slightly cleaned up version of the old
ppc_hash32_pp_check(), which is also used for checking BAT permissions on
the 601.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:39 +0000 (00:31 +0000)]
mmu-hash32: Remove nx from context structure
Previous cleanups have meant the nx field of the mmu_ctx_hash32 structure
is now only used within ppc_hash32_translate(), and so it can be replaced
by a local variable.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:38 +0000 (00:31 +0000)]
mmu-hash*: Don't update PTE flags when permission is denied
BEHAVIOUR CHANGE
Currently if ppc_hash{32,64}_translate() finds a PTE matching the given
virtual address, it will always update the PTE's R & C (Referenced and
Changed) bits. This happens even if the PTE's permissions mean we are
about to deny the translation.
This is clearly a bug, although we get away with it because:
a) It will only incorrectly set, never reset the bits, which should not
cause guest correctness problems.
b) Linux guests never use the R & C bits anyway.
This patch fixes the behaviour, only updating R & C when access is granted
by the PTE.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:37 +0000 (00:31 +0000)]
mmu-hash32: Don't look up page tables on BAT permission error
BEHAVIOUR CHANGE
Currently, on any failure translating an address with BATs, we proceed to
normal segment and page table translation. That's incorrect if the
BAT error was due to permissions, rather than not finding a matching BAT.
We've gotten away with it because a guest would not usually put
translations for the same address in both BATs and page table. Nonetheless
this patch corrects the logic, only doing page table lookup if no BAT
is found. A matching BAT with bad permissions will now correctly trigger
an exception.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:36 +0000 (00:31 +0000)]
mmu-hash32: Cleanup BAT lookup
This patch makes a general cleanup of the ppc_hash32_get_bat() function,
renaming it to ppc_hash32_bat_lookup(). In particular, the new function
only looks for a matching BAT, with the permissions check from the old
function moved to the caller.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:35 +0000 (00:31 +0000)]
mmu-hash32: Clean up BAT matching logic
The code to search for a matching BAT for a virtual address is somewhat
longwinded and awkward. In particular, it relies on seperate size and
validity information being returned from the hash32_bat_size() function
(and 601 specific variant).
We simplify this by having hash32_bat_size() return instead a mask of the
virtual address bits to match, and 0 for invalid (since a BAT can never
match the entire address space).
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:34 +0000 (00:31 +0000)]
mmu-hash32: Split BAT size logic from permissions logic
hash32_bat_size_prot() and its 601 variant, as the name suggests, returns
both a BAT's size - needed to search for a matching BAT - and its
permissions, only relevant once a matching BAT has been located.
There's no particular advantage to combining these, so we split these roles
into seperate functions for clarity.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:33 +0000 (00:31 +0000)]
mmu-hash32: Remove odd pointer usage from BAT code
In the code for handling BATs, the hash32_bat_size_prot() and
hash32_bat_601_size_prot() functions are passed the BAT contents by
reference (pointer) for no clear reason, since they only need the values
within.
This patch removes this odd usage, and uses the resulting change to clean
up the caller slightly.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:32 +0000 (00:31 +0000)]
mmu-hash*: Fold pte_check*() logic into caller
With previous cleanups made, the 32-bit and 64-bit pte_check*() functions
are pretty trivial and only have one call site. This patch therefore
clarifies the overall code flow by folding those functions into their
call site.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:31 +0000 (00:31 +0000)]
mmu-hash64: Clean up ppc_hash64_htab_lookup()
This patch makes a general cleanup of the address mangling logic in
ppc_hash64_htab_lookup(). In particular it now avoids repeatedly switching
on the segment size. The lack of SLB and multiple segment sizes on 32-bit
means an analogous cleanup is not needed there.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:30 +0000 (00:31 +0000)]
mmu-hash*: Remove permission checking from find_pte{32, 64}()
find_pte{32,64}() are poorly named, since they both find a PTE and do
permissions checking of it. This patch makes them only locate a matching
PTE, moving the permission checking and other logic to the caller. We
rename the resulting search functions ppc_hash{32,64}_htab_lookup().
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:29 +0000 (00:31 +0000)]
mmu-hash*: Make find_pte{32, 64} do more of the job of finding ptes
find_pte{32,64}() are not particularly well named. They only "find" a PTE
within a given PTE group, and they also do permissions checking and other
things.
This patch makes it somewhat close to matching the name, by folding the
search of both primary and secondary hash bucket into it, along with the
various address bit shuffling to determine the right hash buckets.
In the 32-bit case we also remove the code for splitting large pages into
4k pieces for the qemu tlb, since no 32-bit hash MMUs support multiple page
sizes.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:28 +0000 (00:31 +0000)]
mmu-hash*: Separate PTEG searching from permissions checking
find_pte{32,64{() do several things. First they search through a PTEG
ooking for a PTE matching our virtual address. Then they do permissions
checking and other processing on that PTE.
This patch separates the search by VA out from the rest. The search is
combined with the pte{32,64}_match() functions into new
ppc_has{32,64}_pteg_search() functions.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:27 +0000 (00:31 +0000)]
mmu-hash*: Don't keep looking for PTEs after we find a match
BEHAVIOUR CHANGE
The ppc hash mmu hashes each virtual address to a primary and secondary
possible hash bucket (aka PTE group or PTEG) each with 8 PTEs. Then we
need a linear search through the PTEs to find the correct one for the
virtual address we're translating.
It is a programming error for the guest to insert multiple PTEs mapping the
same virtual address into a PTEG - in this case the ppc architecture says
the MMU can either act as if just one was present, or give a machine check.
Currently our code takes the first matching PTE in a PTEG if it finds a
successful translation. But if a matching PTE is found, but permission
bits don't allow the access, we keep looking through the PTEG, checking
that any other matching PTEs contain an identical translation.
That behaviour is perhaps not exactly wrong, but it's certainly not useful.
This patch changes it to always just find the first matching PTE in a PTEG.
In addition, if we get a permissions problem on the primary PTEG, we then
search the secondary PTEG. This is incorrect - a permission denying PTE
in the primary PTEG should not be overwritten by an access granting PTE in
the secondary (although again, it would be a programming error for the
guest to set up such a situation anyway). So additionally we update the
code to only search the secondary PTEG if no matching PTE is found in the
primary at all.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:26 +0000 (00:31 +0000)]
mmu-hash*: Cleanup segment-level NX check
On the ppc hash mmus, no-execute can be set at the segment level (on more
recent 64-bit hash mmus it can also be set at the page level). This patch
separates out this check to make it clearer what is going on, and avoiding
excessive indentation of the remaining translation code.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:25 +0000 (00:31 +0000)]
mmu-hash32: Split direct store segment handling into a helper
This further separates the unusual case handling of direct store segments
from the main translation path by moving its logic into a helper function,
with some tiny cleanups along the way.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:24 +0000 (00:31 +0000)]
mmu-hash32: Split out handling of direct store segments
At present a large chunk of ppc_hash32_translate() is taken up with an
ugly if selecting between direct store segments (hardly ever used) and
normal paged segments. This patch clarifies the flow of code by
handling direct store segments immediately then returning, leaving the
straight line code to describe the normal MMU path.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:23 +0000 (00:31 +0000)]
mmu-hash*: Combine ppc_hash{32, 64}_get_physical_address and get_segment{32, 64}()
After previous work, ppc_hash{32,64}_get_physical_address() are almost
trivial wrappers around get_segment{32,64}() which does nearly all the work of
translating an address according to the hash mmu model. Therefore combine the
two functions into one, under the better name of
ppc_hash{32,64}_translate().
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:22 +0000 (00:31 +0000)]
mmu-hash*: Remove eaddr field from mmu_ctx_hash{32, 64}
The eaddr field of mmu_ctx_hash{32,64} is effectively just used to pass the
effective address from get_segment{32,64}() to find_pte{32,64}(). Just
pass it as a normal parameter instead.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:21 +0000 (00:31 +0000)]
mmu-hash64: Remove nx from mmu_ctx_hash64
The nx field in mmu_ctx_hash64 is used in two different functions. But its
used for slightly different things in each place, and the value is never
propagated between them. In other words, it might as well be two local
variables. This patch makes it so.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:20 +0000 (00:31 +0000)]
mmu-hash*: Reduce use of access_type
In ppc env->access_type is updated by e.g. integer load/stores with
ACCESS_INT floating point load/stores with ACCESS_FLOAT and so forth. In
hash mmu fault paths it can also b set to ACCESS_CODE for instruction
fetch accesses.
But the only place which uses anything more of the access_type than
whether it is instruction fetch or data access is the direct store segment
handling. Instruction versus data access can be more simply determined
from the rw value passed down from the top.
This changes the code to use rw in preference to checking access_type.
For the 32-bit case there is a small amount of code (for direct store
segments) that still needs the full access type. Instead of passing it
all the way down the stack, we retrieve it from the env structure, which
is where it came anyway, before this patch.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:19 +0000 (00:31 +0000)]
mmu-hash*: Add hash pte load/store helpers
On real hardware the ppc hash page table is stored in memory; accordingly
our mmu emulation code can read a hash page table in guest memory. But,
when paravirtualized under PAPR, the real hash page table is in host
memory, accessible to the guest only via hypercalls. We model this by
also allowing the MMU emulation code to access a specially allocated hash
page table outside the guest's memory image. At present these two options
are implemented with some ugly conditionals at each access point in the mmu
emulation code. In the implementation of the PAPR hypercalls, we assume
the external hash table.
This patch cleans things up by adding helpers to load and store from the
hash table for both 32-bit and 64-bit hash mmus. The 64-bit versions
handle both the in-guest-memory and outside guest memory cases. The 32-bit
versions only handle the in-guest-memory case since no 32-bit systems can
have an external hash table at present.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:18 +0000 (00:31 +0000)]
mmu-hash*: Add header file for definitions
Currently cpu.h contains a number of definitions relating to the 64-bit
hash MMU. Some are used in the MMU emulation code, but some are only used
in the spapr MMU management hcall implementations.
This patch moves these definitions (except for a few that are needed
more widely) into mmu-hash64.h header, shared between the MMU emulation
code and the spapr hcall code. The MMU emulation code is also updated to
actually use a number of those definitions in place of hard coded
constants.
Similarly, we add new analogous definitions to mmu-hash32.h and use those
in place of many hard-coded constants in mmu-hash32.c
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
[agraf: fix 32-bit hosts]
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:17 +0000 (00:31 +0000)]
target-ppc: mmu_ctx_t should not be a global type
mmu_ctx_t is currently defined in cpu.h. However it is used for temporary
information relating to mmu translation, and is only used in mmu_helper.c
and (now) mmu-hash{32,64}.c. Furthermore it contains information which
should be specific to particular MMU types. Therefore, move its definition
to mmu_helper.c. mmu-hash{32,64}.c are converted to use new data types
private to the relevant MMUs (identical to mmu_ctx_t for now, but that will
change in future patches).
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:16 +0000 (00:31 +0000)]
target-ppc: Disentangle BAT code for 32-bit hash MMUs
The functions for looking up BATs (Block Address Translation - essentially
a level 0 TLB) are shared between the classic 32-bit hash MMUs and the
6xx style software loaded TLB implementations.
This patch splits out a copy for the 32-bit hash MMUs, to facilitate
cleaning it up. The remaining version is left, but cleaned up slightly
to no longer deal with PowerPC 601 peculiarities (601 has a hash MMU).
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:15 +0000 (00:31 +0000)]
target-ppc: Don't share get_pteg_offset() between 32 and 64-bit
The get_pteg_offset() helper function is currently shared between 32-bit
and 64-bit hash mmus, taking a parameter for the hash pte size. In the
64-bit paths, it's only called in one place, and it's a trivial
calculation. This patch, therefore, open codes it for 64-bit. The
remaining version, which is used in two places is made 32-bit only and
moved to mmu-hash32.c.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:14 +0000 (00:31 +0000)]
target-ppc: Disentangle hash mmu helper functions
The newly separated paths for hash mmus rely on several helper functions
which are still shared with 32-bit hash mmus: pp_check(), check_prot() and
pte_update_flags(). While these don't have ugly ifdefs on the mmu type,
they're not very well thought out, so sharing them impedes cleaning up the
hash mmu paths. For now, put near-duplicate versions into mmu-hash64.c and
mmu-hash32.c, leaving the old version in mmu_helper.c for 6xx software
loaded tlb implementations. The hash 32 and software loaded
implementations are simplfied slightly, using the fact that no 32-bit CPUs
implement the 3rd page protection bit.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:13 +0000 (00:31 +0000)]
target-ppc: Disentangle hash mmu versions of cpu_get_phys_page_debug()
cpu_get_phys_page_debug() is a trivial wrapper around
get_physical_address(). But even the signature of
get_physical_address() has some things we'd like to clean up on a
per-mmu basis, so this patch moves the test on mmu model out to
cpu_get_phys_page_debug(), moving the version for 64-bit hash MMUs out
to mmu-hash64.c and the version for 32-bit hash MMUs to mmu-hash32.c
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:12 +0000 (00:31 +0000)]
target-ppc: Disentangle hash mmu paths for cpu_ppc_handle_mmu_fault
cpu_ppc_handle_mmu_fault() calls get_physical_address() (whose behaviour
depends on MMU type) then, if that fails, issues an appropriate exception
- which again has a number of dependencies on MMU type.
This patch starts converting cpu_ppc_handle_mmu_fault() to have a
single switch on MMU type, calling MMU specific fault handler
functions which deal with both translation and exception delivery
appropriately for the MMU type. We convert 32-bit and 64-bit hash
MMUs to this new model, but the existing code is left in place for
other MMU types for now.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:11 +0000 (00:31 +0000)]
target-ppc: Disentangle get_physical_address() paths
Depending on the MSR state, for 64-bit hash MMUs, get_physical_address
can either call check_physical (which has further tests for mmu type)
or get_segment64. Similarly for 32-bit hash MMUs we can either call
check_physucal or get_bat() and get_segment32().
This patch splits off the whole get_physical_addresss() path for hash
MMUs into 32-bit and 64-bit versions, handling real mode correctly for
such MMUs without going to check_physical and rechecking the mmu type.
Correspondingly, the hash MMU specific paths in check_physical() are
removed.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:10 +0000 (00:31 +0000)]
target-ppc: Rework get_physical_address()
Currently get_physical_address() first checks to see if translation is
enabled in the MSR, then in the translation on case switches on the mmu
type. Except that for BookE MMUs, translation is always on, and so it
has to switch in the "translation off" case as well and do the same thing
as the translation on path for those MMUs. Plus, even translation off
doesn't behave exactly the same on the various MMU types so there are
further mmu type checks in the "translation off" path.
As a first step to cleaning this up, this patch moves the switch on mmu
type to the top level, then makes the translation on/off check just for
those mmu types where it is meaningful.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:09 +0000 (00:31 +0000)]
target-ppc: Disentangle get_segment()
The poorly named get_segment() function handles most of the address
translation logic for hash-based MMUs. It has many ugly conditionals on
whether the MMU is 32-bit or 64-bit.
This patch splits the function into 32 and 64-bit versions, using the
switch on mmu_type that's already in the caller
(get_physical_address()) to select the right one. Most of the
original function remains in mmu_helper.c to support the 6xx software
loaded TLB implementations (cleaning those up is a project for another
day).
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:08 +0000 (00:31 +0000)]
target-ppc: Disentangle find_pte()
32-bit and 64-bit hash MMU implementations currently share a find_pte
function. This results in a whole bunch of ugly conditionals in the shared
function, and not all that much actually shared code.
This patch separates out the 32-bit and 64-bit versions, putting then
in mmu-hash64.c and mmu-has32.c, and removes the conditionals from
both versions.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:07 +0000 (00:31 +0000)]
target-ppc: Disentangle pte_check()
Currently support for both 32-bit and 64-bit hash MMUs share an
implementation of pte_check. But there are enough differences that this
means the shared function has several very ugly conditionals on "is_64b".
This patch cleans things up by separating out the 64-bit version
(putting it into mmu-hash64.c) and the 32-bit hash version (putting it
in mmu-hash32.c). Another copy remains in mmu_helper.c, which is used
for the 6xx software loaded TLB paths.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:06 +0000 (00:31 +0000)]
target-ppc: Move SLB handling into a mmu-hash64.c
As a first step to disentangling the handling for 64-bit hash MMUs from
the rest, we move the code handling the Segment Lookaside Buffer (SLB)
(which only exists on 64-bit hash MMUs) into a new mmu-hash64.c file.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:05 +0000 (00:31 +0000)]
target-ppc: Remove address check for logging
One LOG_MMU statement in mmu_helper.c has an odd check on the effective
address being translated. I can see no reason for this; I suspect it was
a debugging hack from long ago. This patch removes it.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:04 +0000 (00:31 +0000)]
target-ppc: Trivial cleanups in mmu_helper.c
This removes the never-used pte64_invalidate() function, and makes
ppcmas_tlb_check() static, since it's only used within that file.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 12 Mar 2013 00:31:03 +0000 (00:31 +0000)]
target-ppc: Remove vestigial PowerPC 620 support
The PowerPC 620 was the very first 64-bit PowerPC implementation, but
hardly anyone ever actually used the chips. qemu notionally supports the
620, but since we don't actually have code to implement the segment table,
the support is broken (quite likely in other ways too).
This patch, therefore, removes all remaining pieces of 620 support, to
stop it cluttering up the platforms we actually care about. This includes
removing support for the ASR register, used only on segment table based
machines.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
Fabien Chouteau [Tue, 19 Mar 2013 07:41:53 +0000 (07:41 +0000)]
PPC/GDB: handle read and write of fpscr
Although the support of this register may be uncomplete, there are no
reason to prevent the debugger from reading or writing it.
Signed-off-by: Fabien Chouteau <chouteau@adacore.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Wed, 13 Mar 2013 15:53:28 +0000 (15:53 +0000)]
pseries: Move XICS initialization before cpu initialization
Currently, the pseries machine initializes the cpus, then the XICS
interrupt controller. However, to support the upcoming in-kernel XICS
implementation we will need to initialize the irq controller before the
vcpus. This patch makes the necesssary rearrangement. This means the
xics init code can no longer auto-detect the number of cpus ("interrupt
servers" in XICS terminology) and so we must pass that in explicitly from
the platform code.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Ben Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Wed, 13 Mar 2013 15:53:27 +0000 (15:53 +0000)]
target-ppc: Remove CONFIG_PSERIES dependency in kvm.c
target-ppc/kvm.c has an #ifdef on CONFIG_PSERIES, for the handling of
KVM exits due to a PAPR hypercall from the guest. However, since commit
e4c8b28cde12d01ada8fe869567dc5717a2dfcb7 "ppc: express FDT dependency of
pSeries and e500 boards via default-configs/", this hasn't worked properly.
That patch altered the configuration setup so that although CONFIG_PSERIES
is visible from the Makefiles, it is not visible from C files. This broke
the pseries machine when KVM is in use.
This patch makes a quick and dirty fix, by removing the CONFIG_PSERIES
dependency, replacing it with TARGET_PPC64 (since removing it entirely
leads to type mismatch errors). Technically this breaks the build when
configured with --disable-fdt, since that disables CONFIG_PSERIES on
TARGET_PPC64. However, it turns out the build was already broken in that
case, so this fixes pseries kvm without breaking anything extra. I'm
looking into how to fix that build breakage, but I don't think that need
delay applying this patch.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Wed, 13 Mar 2013 15:53:25 +0000 (15:53 +0000)]
pseries: Remove "busname" property for PCI host bridge
Currently the "spapr-pci-host-bridge" device has a "busname" property which
can be used to override the default assignment of qbus names for the bus
subordinate to the PHB. We use that for the default primary PCI bus, to
make libvirt happy, which expects there to be a bus named simply "pci".
The default qdev core logic would name the bus "pci.0", and the pseries
code would otherwise name it "pci@
800000020000000" which is the name it
is given in the device tree based on its BUID.
The "busname" property is rather clunky though, so this patch simplifies
things by just using a special case hack for the default PHB, setting
busname to "pci" when index=0.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Thu, 14 Mar 2013 17:59:29 +0000 (17:59 +0000)]
pseries: Fix breakage in CPU QOM conversion
Commit
259186a7d2f7184efc96ae99bc5658e6159f53ad "cpu: Move halted and
interrupt_request fields to CPUState" broke the pseries machine. That's
because it uses CPU() instead of ENV_GET_CPU() to convert from the global
first_cpu pointer (still a CPUArchState) to a CPUState. This patch fixes
the breakage.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
Kevin Wolf [Tue, 19 Mar 2013 11:25:43 +0000 (12:25 +0100)]
serial: Fix debug format strings
This fixes the build of hw/serial.c with DEBUG_SERIAL enabled.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Peter Maydell [Mon, 18 Mar 2013 17:20:07 +0000 (17:20 +0000)]
Fix typos and misspellings
Fix various typos and misspellings. The bulk of these were found with
codespell.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Doug Goldstein [Sun, 17 Mar 2013 20:43:26 +0000 (15:43 -0500)]
Advertise --libdir in configure --help output
The configure script allows you to supply a libdir via --libdir but was
not advertising this in --help.
Signed-off-by: Doug Goldstein <cardoe@cardoe.com>
CC: qemu-trivial@nongnu.org
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Hu Tao [Fri, 15 Mar 2013 06:32:01 +0000 (14:32 +0800)]
memory: fix a bug of detection of memory region collision
The collision reports before and after this patch are:
before:
warning: subregion collision cfc/4 (pci-conf-data) vs cf8/4 (pci-conf-idx)
warning: subregion collision
8000000/
f8000000 (pci-hole) vs 0/
8000000 (ram-below-4g)
warning: subregion collision
100000000/
4000000000000000 (pci-hole64) vs
8000000/
f8000000 (pci-hole)
warning: subregion collision 4d1/1 (kvm-elcr) vs 4d0/1 (kvm-elcr)
warning: subregion collision
fec00000/1000 (kvm-ioapic) vs
8000000/
f8000000 (pci-hole)
warning: subregion collision 80/1 (ioport80) vs 7e/2 (kvmvapic)
warning: subregion collision
fed00000/400 (hpet) vs
8000000/
f8000000 (pci-hole)
warning: subregion collision 81/3 (dma-page) vs 80/1 (ioport80)
warning: subregion collision 8/8 (dma-cont) vs 0/8 (dma-chan)
warning: subregion collision d0/10 (dma-cont) vs c0/10 (dma-chan)
warning: subregion collision 0/80 (ich9-pm) vs 8/8 (dma-cont)
warning: subregion collision 0/80 (ich9-pm) vs 0/8 (dma-chan)
warning: subregion collision 0/80 (ich9-pm) vs 64/1 (i8042-cmd)
warning: subregion collision 0/80 (ich9-pm) vs 60/1 (i8042-data)
warning: subregion collision 0/80 (ich9-pm) vs 61/1 (elcr)
warning: subregion collision 0/80 (ich9-pm) vs 40/4 (kvm-pit)
warning: subregion collision 0/80 (ich9-pm) vs 70/2 (rtc)
warning: subregion collision 0/80 (ich9-pm) vs 20/2 (kvm-pic)
warning: subregion collision 0/80 (ich9-pm) vs 7e/2 (kvmvapic)
warning: subregion collision 4/2 (acpi-cnt) vs 0/4 (acpi-evt)
warning: subregion collision 30/8 (apci-smi) vs 20/10 (apci-gpe0)
warning: subregion collision
b0000000/
10000000 (pcie-mmcfg) vs
8000000/
f8000000 (pci-hole)
after:
warning: subregion collision
fec00000/1000 (kvm-ioapic) vs
8000000/
f8000000 (pci-hole)
warning: subregion collision
fed00000/400 (hpet) vs
8000000/
f8000000 (pci-hole)
warning: subregion collision 0/80 (ich9-pm) vs 8/8 (dma-cont)
warning: subregion collision 0/80 (ich9-pm) vs 0/8 (dma-chan)
warning: subregion collision 0/80 (ich9-pm) vs 64/1 (i8042-cmd)
warning: subregion collision 0/80 (ich9-pm) vs 60/1 (i8042-data)
warning: subregion collision 0/80 (ich9-pm) vs 61/1 (elcr)
warning: subregion collision 0/80 (ich9-pm) vs 40/4 (kvm-pit)
warning: subregion collision 0/80 (ich9-pm) vs 70/2 (rtc)
warning: subregion collision 0/80 (ich9-pm) vs 20/2 (kvm-pic)
warning: subregion collision 0/80 (ich9-pm) vs 7e/2 (kvmvapic)
warning: subregion collision
b0000000/
10000000 (pcie-mmcfg) vs
8000000/
f8000000 (pci-hole)
Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Stefan Weil [Fri, 8 Mar 2013 18:58:32 +0000 (19:58 +0100)]
MinGW: Replace setsockopt by qemu_setsocketopt
Instead of adding missing type casts which are needed by MinGW for the
4th argument, the patch uses qemu_setsockopt which was invented for this
purpose.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Cornelia Huck [Wed, 20 Mar 2013 07:27:50 +0000 (08:27 +0100)]
virtio-ccw, s390-virtio: Use generic virtio-blk macro.
Now that virtio-ccw and s390-virtio define all common properties
for virtio-blk, we can switch to using the generic
DEFINE_VIRTIO_BLK_PROPERTIES macro.
CC: Alexander Graf <agraf@suse.de>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Cornelia Huck [Wed, 13 Mar 2013 14:20:07 +0000 (15:20 +0100)]
s390-virtio, virtio-ccw: Add config_wce for virtio-blk.
There's no reason why we wouldn't want to make the cache mode
configurable.
Acked-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>