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Laszlo Ersek [Wed, 13 Sep 2023 14:49:59 +0000 (16:49 +0200)]
ui/console: sanitize search in qemu_graphic_console_is_multihead()
qemu_graphic_console_is_multihead() declares the graphical console "c" a
"multihead" console if there are two different graphical consoles in the
system that (a) both reference "c->device", and (b) have different
"c->head" numbers. In effect, if at least two graphical consoles exist
that are different heads of the same device that underlies "c". In fact,
"c" may be one of these two graphical consoles, or "c" may differ from
both of those consoles (in case "c->device" has at least three heads).
The loop currently uses this awkward "two different consoles" approach
because the function used not to have access to "c", only to "c->device",
which didn't allow for fetching (and comparing) "c->head". But, we've
changed that in the last patch; we now pass all of "c" to
qemu_graphic_console_is_multihead().
Thus, look for the *first* (and possibly *only*) graphical console, if
any, that refers to the same "device" as "c", but by a different "head"
number.
Cc: "Marc-André Lureau" <marcandre.lureau@redhat.com> (odd fixer:Graphics)
Cc: Gerd Hoffmann <kraxel@redhat.com> (odd fixer:Graphics)
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-ID: <
20230913144959.41891-5-lersek@redhat.com>
Laszlo Ersek [Wed, 13 Sep 2023 14:49:58 +0000 (16:49 +0200)]
ui/console: eliminate QOM properties from qemu_console_is_multihead()
According to Marc-André's and Gerd's descriptions, the "device" and
"head" members of QemuGraphicConsole are exposed as QOM properties for two
purposes:
(1) Introspection (e.g., "qom-get" monitor command).
(2) A VNC server can display a specific device + head. This lets us run a
multihead configuration by using multiple VNC servers (one for each
head).
Further, we can link input devices to device + head, so input events
are routed to different devices dependent on where they are coming
from. Which is most useful for tablet devices in a VNC multihead
setup, each head has its own tablet device then. This does requires
manual guest-side configuration, for establishing the same tablet <->
head relationship.
However, neither goal seems to justify the complicated QOM property lookup
that's internal to qemu_console_is_multihead().
Rework qemu_console_is_multihead() with plain old C language field
accesses.
Cc: "Marc-André Lureau" <marcandre.lureau@redhat.com> (odd fixer:Graphics)
Cc: Gerd Hoffmann <kraxel@redhat.com> (odd fixer:Graphics)
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-ID: <
20230913144959.41891-4-lersek@redhat.com>
Laszlo Ersek [Wed, 13 Sep 2023 14:49:57 +0000 (16:49 +0200)]
ui/console: only walk QemuGraphicConsoles in qemu_console_is_multihead()
qemu_console_is_multihead() declares the console "c" a "multihead" console
if there are two different consoles in the system that (a) both reference
"c->device", and (b) have different "c->head" numbers. In effect, if at
least two consoles exist that are different heads of the same device that
underlies "c".
Commit
58d5870845c6 ("ui/console: move graphic fields to
QemuGraphicConsole", 2023-09-04) pushed the "device" and "head" members
from the QemuConsole base class down to the QemuGraphicConsole subclass,
adjusting the referring QOM properties accordingly as well. As a result,
the "device" property lookup in qemu_console_is_multihead() now crashes,
in case the candidate console being investigated for criterion (a) is not
a QemuGraphicConsole instance:
> Unexpected error in object_property_find_err() at qom/object.c:1314:
> qemu: Property 'qemu-fixed-text-console.device' not found
> Aborted (core dumped)
This is effectively an unchecked downcast. Make it checked: only consider
such console candidates that are themselves QemuGraphicConsole instances.
Cc: "Marc-André Lureau" <marcandre.lureau@redhat.com> (odd fixer:Graphics)
Cc: Gerd Hoffmann <kraxel@redhat.com> (odd fixer:Graphics)
Fixes:
58d5870845c6
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-ID: <
20230913144959.41891-3-lersek@redhat.com>
Laszlo Ersek [Wed, 13 Sep 2023 14:49:56 +0000 (16:49 +0200)]
ui/console: make qemu_console_is_multihead() static
qemu_console_is_multihead() is only called from within "ui/console.c";
make it static.
Cc: "Marc-André Lureau" <marcandre.lureau@redhat.com> (odd fixer:Graphics)
Cc: Gerd Hoffmann <kraxel@redhat.com> (odd fixer:Graphics)
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-ID: <
20230913144959.41891-2-lersek@redhat.com>
Akihiko Odaki [Thu, 21 Sep 2023 08:29:34 +0000 (17:29 +0900)]
input: Allow to choose console with qemu_input_is_absolute
Although an input is routed depending on the console,
qemu_input_is_absolute() had no mechanism to specify the console.
Accept QemuConsole as an argument for qemu_input_is_absolute, and let
the display know the absolute/relative state for a particular console.
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <
20230921082936.28100-1-akihiko.odaki@daynix.com>
Stefan Hajnoczi [Mon, 2 Oct 2023 18:42:44 +0000 (14:42 -0400)]
Merge tag 'migration-
20231002-pull-request' of https://gitlab.com/juan.quintela/qemu into staging
Migration Pull request (
20231002)
In this migration pull request:
- Refactor repeated call of yank_unregister_instance (tejus)
- More migraton-test changes
Please, apply.
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# gpg: Signature made Mon 02 Oct 2023 08:20:14 EDT
# gpg: using RSA key
1899FF8EDEBF58CCEE034B82F487EF185872D723
# gpg: Good signature from "Juan Quintela <quintela@redhat.com>" [full]
# gpg: aka "Juan Quintela <quintela@trasno.org>" [full]
# Primary key fingerprint: 1899 FF8E DEBF 58CC EE03 4B82 F487 EF18 5872 D723
* tag 'migration-
20231002-pull-request' of https://gitlab.com/juan.quintela/qemu:
migration/rdma: Simplify the function that saves a page
migration: Remove unused qemu_file_credit_transfer()
migration/rdma: Don't use imaginary transfers
migration/rdma: Remove QEMUFile parameter when not used
migration/RDMA: It is accounting for zero/normal pages in two places
migration: Don't abuse qemu_file transferred for RDMA
migration: Use qemu_file_transferred_noflush() for block migration.
migration: Refactor repeated call of yank_unregister_instance
migration-test: simplify shmem_opts handling
migration-test: dirtylimit checks for x86_64 arch before
migration-test: Add bootfile_create/delete() functions
migration-test: bootpath is the same for all tests and for all archs
migration-test: Create kvm_opts
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Stefan Hajnoczi [Mon, 2 Oct 2023 18:42:30 +0000 (14:42 -0400)]
Merge tag 'pull-shadow-2023-09-29' of https://repo.or.cz/qemu/armbru into staging
-Wshadow=local patches patches for 2023-09-29
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# gpg: Signature made Fri 29 Sep 2023 04:10:35 EDT
# gpg: using RSA key
354BC8B3D7EB2A6B68674E5F3870B400EB918653
# gpg: issuer "armbru@redhat.com"
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [full]
# gpg: aka "Markus Armbruster <armbru@pond.sub.org>" [full]
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867 4E5F 3870 B400 EB91 8653
* tag 'pull-shadow-2023-09-29' of https://repo.or.cz/qemu/armbru: (56 commits)
disas/m68k: clean up local variable shadowing
hw/nvme: Clean up local variable shadowing in nvme_ns_init()
softmmu/device_tree: Fixup local variables shadowing
target/riscv: vector_helper: Fixup local variables shadowing
target/riscv: cpu: Fixup local variables shadowing
hw/riscv: opentitan: Fixup local variables shadowing
qemu-nbd: changes towards enabling -Wshadow=local
seccomp: avoid shadowing of 'action' variable
crypto: remove shadowed 'ret' variable
intel_iommu: Fix shadow local variables on "size"
aspeed/timer: Clean up local variable shadowing
aspeed/i3c: Rename variable shadowing a local
aspeed: Clean up local variable shadowing
aspeed/i2c: Clean up local variable shadowing
hw/arm/smmuv3-internal.h: Don't use locals in statement macros
hw/arm/smmuv3.c: Avoid shadowing variable
hw/misc/arm_sysctl.c: Avoid shadowing local variable
hw/intc/arm_gicv3_its: Avoid shadowing variable in do_process_its_cmd()
hw/acpi: changes towards enabling -Wshadow=local
test-throttle: don't shadow 'index' variable in do_test_accounting()
...
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Stefan Hajnoczi [Mon, 2 Oct 2023 18:42:17 +0000 (14:42 -0400)]
Merge tag 'pull-tricore-
20230929' of https://github.com/bkoppelmann/qemu into staging
- Add FTOU, CRCN, FTOHP, and HPTOF insns
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# gpg: Signature made Fri 29 Sep 2023 02:32:11 EDT
# gpg: using RSA key
6E636A7E83F2DD0CFA6E6E370AD2C6396B69CA14
# gpg: issuer "kbastian@mail.uni-paderborn.de"
# gpg: Good signature from "Bastian Koppelmann <kbastian@mail.uni-paderborn.de>" [unknown]
# gpg: WARNING: The key's User ID is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 6E63 6A7E 83F2 DD0C FA6E 6E37 0AD2 C639 6B69 CA14
* tag 'pull-tricore-
20230929' of https://github.com/bkoppelmann/qemu:
target/tricore: Change effective address (ea) to target_ulong
target/tricore: Remove CSFRs from cpu.h
tests/tcg: Reset result register after each test
hw/tricore: Log failing test in testdevice
tests/tcg/tricore: Extended and non-extened regs now match
target/tricore: Fix FTOUZ being ISA v1.3.1 up
target/tricore: Replace cpu_*_code with translator_*
target/tricore: Swap src and dst reg for RCRR_INSERT
target/tricore: Fix RCPW/RRPW_INSERT insns for width = 0
target/tricore: Implement hptof insn
target/tricore: Implement ftohp insn
target/tricore: Clarify special case for FTOUZ insn
target/tricore: Implement FTOU insn
target/tricore: Correctly handle FPU RM from PSW
target/tricore: Implement CRCN insn
tests/tcg/tricore: Bump cpu to tc37x
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Stefan Hajnoczi [Mon, 2 Oct 2023 18:42:05 +0000 (14:42 -0400)]
Merge tag 'pull-tcg-
20230928' of https://gitlab.com/rth7680/qemu into staging
accel/tcg: Always require can_do_io, for #1866
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# gpg: Signature made Thu 28 Sep 2023 15:40:56 EDT
# gpg: using RSA key
7A481E78868B4DB6A85A05C064DF38E8AF7E215F
# gpg: issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [full]
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A 05C0 64DF 38E8 AF7E 215F
* tag 'pull-tcg-
20230928' of https://gitlab.com/rth7680/qemu:
accel/tcg: Always require can_do_io
accel/tcg: Always set CF_LAST_IO with CF_NOIRQ
accel/tcg: Improve setting of can_do_io at start of TB
accel/tcg: Track current value of can_do_io in the TB
accel/tcg: Hoist CF_MEMI_ONLY check outside translation loop
accel/tcg: Avoid load of icount_decr if unused
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Stefan Hajnoczi [Mon, 2 Oct 2023 18:25:16 +0000 (14:25 -0400)]
Merge tag 'tracing-pull-request' of https://gitlab.com/stefanha/qemu into staging
Pull request
- Mads Ynddal's improvements to simpletrace.py
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# gpg: Signature made Thu 28 Sep 2023 09:44:00 EDT
# gpg: using RSA key
8695A8BFD3F97CDAAC35775A9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>" [ultimate]
# gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>" [ultimate]
# Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35 775A 9CA4 ABB3 81AB 73C8
* tag 'tracing-pull-request' of https://gitlab.com/stefanha/qemu:
scripts/analyse-locks-simpletrace.py: changed iteritems() to items()
MAINTAINERS: add maintainer of simpletrace.py
simpletrace: added simplified Analyzer2 class
simpletrace: move event processing to Analyzer class
simpletrace: move logic of process into internal function
simpletrace: refactor to separate responsibilities
simpletrace: made Analyzer into context-manager
simpletrace: define exception and add handling
simpletrace: improved error handling on struct unpack
simpletrace: update code for Python 3.11
simpletrace: changed naming of edict and idtoname to improve readability
simpletrace: improve parsing of sys.argv; fix files never closed.
simpletrace: annotate magic constants from QEMU code
simpletrace: add __all__ to define public interface
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Juan Quintela [Mon, 15 May 2023 19:57:08 +0000 (21:57 +0200)]
migration/rdma: Simplify the function that saves a page
When we sent a page through QEMUFile hooks (RDMA) there are three
posiblities:
- We are not using RDMA. return RAM_SAVE_CONTROL_DELAYED and
control_save_page() returns false to let anything else to proceed.
- There is one error but we are using RDMA. Then we return a negative
value, control_save_page() needs to return true.
- Everything goes well and RDMA start the sent of the page
asynchronously. It returns RAM_SAVE_CONTROL_DELAYED and we need to
return 1 for ram_save_page_legacy.
Clear?
I know, I know, the interface is as bad as it gets. I think that now
it is a bit clearer, but this needs to be done some other way.
Reviewed-by: Leonardo Bras <leobras@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-Id: <
20230515195709.63843-16-quintela@redhat.com>
Juan Quintela [Mon, 15 May 2023 19:57:07 +0000 (21:57 +0200)]
migration: Remove unused qemu_file_credit_transfer()
After this change, nothing abuses QEMUFile to account for data
transferrefd during migration.
Reviewed-by: Leonardo Bras <leobras@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-Id: <
20230515195709.63843-15-quintela@redhat.com>
Juan Quintela [Mon, 15 May 2023 19:57:06 +0000 (21:57 +0200)]
migration/rdma: Don't use imaginary transfers
RDMA protocol is completely asynchronous, so in qemu_rdma_save_page()
they "invent" that a byte has been transferred. And then they call
qemu_file_credit_transfer() and ram_transferred_add() with that byte.
Just remove that calls as nothing has been sent.
Reviewed-by: Leonardo Bras <leobras@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-Id: <
20230515195709.63843-14-quintela@redhat.com>
Juan Quintela [Mon, 15 May 2023 19:57:05 +0000 (21:57 +0200)]
migration/rdma: Remove QEMUFile parameter when not used
Reviewed-by: Leonardo Bras <leobras@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-Id: <
20230515195709.63843-13-quintela@redhat.com>
Juan Quintela [Mon, 15 May 2023 19:57:04 +0000 (21:57 +0200)]
migration/RDMA: It is accounting for zero/normal pages in two places
Remove the one in control_save_page().
Reviewed-by: Leonardo Bras <leobras@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-Id: <
20230515195709.63843-12-quintela@redhat.com>
Juan Quintela [Mon, 15 May 2023 19:57:03 +0000 (21:57 +0200)]
migration: Don't abuse qemu_file transferred for RDMA
Just create a variable for it, the same way that multifd does. This
way it is safe to use for other thread, etc, etc.
Reviewed-by: Leonardo Bras <leobras@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-Id: <
20230515195709.63843-11-quintela@redhat.com>
Juan Quintela [Tue, 30 May 2023 18:39:24 +0000 (20:39 +0200)]
migration: Use qemu_file_transferred_noflush() for block migration.
We only care about the amount of bytes transferred. Flushing is done
by the system somewhere else.
Reviewed-by: Fabiano Rosas <farosas@suse.de>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-ID: <
20230530183941.7223-4-quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Tejus GK [Wed, 21 Jun 2023 13:09:40 +0000 (13:09 +0000)]
migration: Refactor repeated call of yank_unregister_instance
In the function qmp_migrate(), yank_unregister_instance() gets called
twice which isn't required. Hence, refactoring it so that it gets called
during the local_error cleanup.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Acked-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Tejus GK <tejus.gk@nutanix.com>
Message-ID: <
20230621130940.178659-3-tejus.gk@nutanix.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Juan Quintela [Thu, 8 Jun 2023 22:49:04 +0000 (00:49 +0200)]
migration-test: simplify shmem_opts handling
Reviewed-by: Peter Xu <peterx@redhat.com>
Message-ID: <
20230608224943.3877-4-quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Juan Quintela [Thu, 8 Jun 2023 22:49:11 +0000 (00:49 +0200)]
migration-test: dirtylimit checks for x86_64 arch before
So no need to assert we are in x86_64.
Once there, refactor the function to remove useless variables.
Reviewed-by: Peter Xu <peterx@redhat.com>
Message-ID: <
20230608224943.3877-11-quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Juan Quintela [Thu, 8 Jun 2023 22:49:10 +0000 (00:49 +0200)]
migration-test: Add bootfile_create/delete() functions
The bootsector code is read only from the guest (otherwise we are
going to have problems with it being read from both source and
destination).
Create a single copy for all the tests.
Reviewed-by: Peter Xu <peterx@redhat.com>
Message-ID: <
20230608224943.3877-10-quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Juan Quintela [Thu, 8 Jun 2023 22:49:09 +0000 (00:49 +0200)]
migration-test: bootpath is the same for all tests and for all archs
So just make it a global variable.
Reviewed-by: Peter Xu <peterx@redhat.com>
Message-ID: <
20230608224943.3877-9-quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Juan Quintela [Thu, 8 Jun 2023 22:49:08 +0000 (00:49 +0200)]
migration-test: Create kvm_opts
So arch_dirty_ring option becomes one option like the others.
Reviewed-by: Peter Xu <peterx@redhat.com>
Message-ID: <
20230608224943.3877-8-quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Laurent Vivier [Mon, 25 Sep 2023 08:44:55 +0000 (10:44 +0200)]
disas/m68k: clean up local variable shadowing
Fix following warnings
.../disas/m68k.c: In function ‘print_insn_arg’:
.../disas/m68k.c:1635:13: warning: declaration of ‘val’ shadows a previous local [-Wshadow=compatible-local]
1635 | int val = fetch_arg (buffer, place, 5, info);
| ^~~
.../disas/m68k.c:1093:7: note: shadowed declaration is here
1093 | int val = 0;
| ^~~
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <
20230925084455.395150-1-laurent@vivier.eu>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Klaus Jensen [Mon, 25 Sep 2023 06:05:05 +0000 (08:05 +0200)]
hw/nvme: Clean up local variable shadowing in nvme_ns_init()
Fix local variable shadowing in nvme_ns_init().
Reported-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
Message-ID: <
20230925-fix-local-shadowing-v1-1-
3a1172132377@samsung.com>
Reviewed-by: Jesper Wendel Devantier <j.devantier@samsung.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Alistair Francis [Mon, 25 Sep 2023 04:30:23 +0000 (14:30 +1000)]
softmmu/device_tree: Fixup local variables shadowing
Local variables shadowing other local variables or parameters make the
code needlessly hard to understand. Bugs love to hide in such code.
Evidence: "[PATCH v3 1/7] migration/rdma: Fix save_page method to fail
on polling error".
This patch removes the local variable shadowing. Tested by adding:
--extra-cflags='-Wshadow=local -Wno-error=shadow=local -Wno-error=shadow=compatible-local'
To configure
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <
20230925043023.71448-5-alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Alistair Francis [Mon, 25 Sep 2023 04:30:22 +0000 (14:30 +1000)]
target/riscv: vector_helper: Fixup local variables shadowing
Local variables shadowing other local variables or parameters make the
code needlessly hard to understand. Bugs love to hide in such code.
Evidence: "[PATCH v3 1/7] migration/rdma: Fix save_page method to fail
on polling error".
This patch removes the local variable shadowing. Tested by adding:
--extra-cflags='-Wshadow=local -Wno-error=shadow=local -Wno-error=shadow=compatible-local'
To configure
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <
20230925043023.71448-4-alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Alistair Francis [Mon, 25 Sep 2023 04:30:21 +0000 (14:30 +1000)]
target/riscv: cpu: Fixup local variables shadowing
Local variables shadowing other local variables or parameters make the
code needlessly hard to understand. Bugs love to hide in such code.
Evidence: "[PATCH v3 1/7] migration/rdma: Fix save_page method to fail
on polling error".
This patch removes the local variable shadowing. Tested by adding:
--extra-cflags='-Wshadow=local -Wno-error=shadow=local -Wno-error=shadow=compatible-local'
To configure
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <
20230925043023.71448-3-alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Alistair Francis [Mon, 25 Sep 2023 04:30:20 +0000 (14:30 +1000)]
hw/riscv: opentitan: Fixup local variables shadowing
Local variables shadowing other local variables or parameters make the
code needlessly hard to understand. Bugs love to hide in such code.
Evidence: "[PATCH v3 1/7] migration/rdma: Fix save_page method to fail
on polling error".
This patch removes the local variable shadowing. Tested by adding:
--extra-cflags='-Wshadow=local -Wno-error=shadow=local -Wno-error=shadow=compatible-local'
To configure
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <
20230925043023.71448-2-alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Eric Blake [Fri, 22 Sep 2023 20:50:20 +0000 (15:50 -0500)]
qemu-nbd: changes towards enabling -Wshadow=local
Address all compiler complaints from -Wshadow in qemu-nbd. Several
instances of 'int ret' became shadows when commit
4fbec260 added 'ret'
at a higher scope in main. More interesting was the 'void *ret'
capturing the result of a pthread; where we were conceptually doing
'(void*)(intptr_t)EXIT_FAILURE != NULL' which just feels wrong (even
though it happens to compile correctly), so it was worth a better
cleanup.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-ID: <
20230922205019.
2755352-2-eblake@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Daniel P. Berrangé [Fri, 22 Sep 2023 16:06:44 +0000 (17:06 +0100)]
seccomp: avoid shadowing of 'action' variable
This is confusing as one 'action' variable is used for storing
a SCMP_ enum value, while the other 'action' variable is used
for storing a SECCOMP_ enum value.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-ID: <
20230922160644.438631-3-berrange@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Daniel P. Berrangé [Fri, 22 Sep 2023 16:06:43 +0000 (17:06 +0100)]
crypto: remove shadowed 'ret' variable
Both instances of 'ret' are used to store a gnutls API return code.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-ID: <
20230922160644.438631-2-berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Peter Xu [Fri, 22 Sep 2023 16:04:10 +0000 (12:04 -0400)]
intel_iommu: Fix shadow local variables on "size"
This patch fixes the warning of shadowed local variable:
../hw/i386/intel_iommu.c: In function ‘vtd_address_space_unmap’:
../hw/i386/intel_iommu.c:3773:18: warning: declaration of ‘size’ shadows a previous local [-Wshadow=compatible-local]
3773 | uint64_t size = mask + 1;
| ^~~~
../hw/i386/intel_iommu.c:3747:12: note: shadowed declaration is here
3747 | hwaddr size, remain;
| ^~~~
Cc: Jason Wang <jasowang@redhat.com>
Cc: Eric Auger <eric.auger@redhat.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-ID: <
20230922160410.138786-1-peterx@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Cédric Le Goater [Fri, 22 Sep 2023 15:59:24 +0000 (17:59 +0200)]
aspeed/timer: Clean up local variable shadowing
commit
8137355e850f ("aspeed/timer: Fix behaviour running Linux")
introduced a MAX() expression to calculate the next timer deadline :
return calculate_time(t, MAX(MAX(t->match[0], t->match[1]), 0));
The second MAX() is not necessary since the compared values are an
unsigned and 0. Simply remove it and fix warning :
../hw/timer/aspeed_timer.c: In function ‘calculate_next’:
../include/qemu/osdep.h:396:31: warning: declaration of ‘_a’ shadows a previous local [-Wshadow=compatible-local]
396 | typeof(1 ? (a) : (b)) _a = (a), _b = (b); \
| ^~
../hw/timer/aspeed_timer.c:170:12: note: in expansion of macro ‘MAX’
170 | next = MAX(MAX(calculate_match(t, 0), calculate_match(t, 1)), 0);
| ^~~
../hw/timer/aspeed_timer.c:170:16: note: in expansion of macro ‘MAX’
170 | next = MAX(MAX(calculate_match(t, 0), calculate_match(t, 1)), 0);
| ^~~
/home/legoater/work/qemu/qemu-aspeed.git/include/qemu/osdep.h:396:31: note: shadowed declaration is here
396 | typeof(1 ? (a) : (b)) _a = (a), _b = (b); \
| ^~
../hw/timer/aspeed_timer.c:170:12: note: in expansion of macro ‘MAX’
170 | next = MAX(MAX(calculate_match(t, 0), calculate_match(t, 1)), 0);
| ^~~
Cc: Joel Stanley <joel@jms.id.au>
Cc: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-ID: <
20230922155924.
1172019-5-clg@kaod.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Cédric Le Goater [Fri, 22 Sep 2023 15:59:23 +0000 (17:59 +0200)]
aspeed/i3c: Rename variable shadowing a local
to fix warning :
../hw/i3c/aspeed_i3c.c: In function ‘aspeed_i3c_realize’:
../hw/i3c/aspeed_i3c.c:1959:17: warning: declaration of ‘dev’ shadows a parameter [-Wshadow=local]
1959 | Object *dev = OBJECT(&s->devices[i]);
| ^~~
../hw/i3c/aspeed_i3c.c:1942:45: note: shadowed declaration is here
1942 | static void aspeed_i3c_realize(DeviceState *dev, Error **errp)
| ~~~~~~~~~~~~~^~~
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-ID: <
20230922155924.
1172019-4-clg@kaod.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Cédric Le Goater [Fri, 22 Sep 2023 15:59:22 +0000 (17:59 +0200)]
aspeed: Clean up local variable shadowing
Remove superfluous local 'irq' variables and use the one define at the
top of the routine. This fixes warnings in aspeed_soc_ast2600_realize()
such as :
../hw/arm/aspeed_ast2600.c: In function ‘aspeed_soc_ast2600_realize’:
../hw/arm/aspeed_ast2600.c:420:18: warning: declaration of ‘irq’ shadows a previous local [-Wshadow=compatible-local]
420 | qemu_irq irq = aspeed_soc_get_irq(s, ASPEED_DEV_TIMER1 + i);
| ^~~
../hw/arm/aspeed_ast2600.c:312:14: note: shadowed declaration is here
312 | qemu_irq irq;
| ^~~
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-ID: <
20230922155924.
1172019-3-clg@kaod.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Cédric Le Goater [Fri, 22 Sep 2023 15:59:21 +0000 (17:59 +0200)]
aspeed/i2c: Clean up local variable shadowing
Remove superfluous local 'data' variable and use the one define at the
top of the routine. This fixes :
../hw/i2c/aspeed_i2c.c: In function ‘aspeed_i2c_bus_recv’:
../hw/i2c/aspeed_i2c.c:315:17: warning: declaration of ‘data’ shadows a previous local [-Wshadow=compatible-local]
315 | uint8_t data;
| ^~~~
../hw/i2c/aspeed_i2c.c:288:13: note: shadowed declaration is here
288 | uint8_t data;
| ^~~~
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-ID: <
20230922155924.
1172019-2-clg@kaod.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Peter Maydell [Fri, 22 Sep 2023 15:29:44 +0000 (16:29 +0100)]
hw/arm/smmuv3-internal.h: Don't use locals in statement macros
The STE_CTXPTR() and STE_S2TTB() macros both extract two halves
of an address from fields in the STE and combine them into a
single value to return. The current code for this uses a GCC
statement expression. There are two problems with this:
(1) The type chosen for the variable in the statement expr
is 'unsigned long', which might not be 64 bits
(2) the name chosen for the variable causes -Wshadow warnings
because it's the same as a variable in use at the callsite:
In file included from ../../hw/arm/smmuv3.c:34:
../../hw/arm/smmuv3.c: In function ‘smmu_get_cd’:
../../hw/arm/smmuv3-internal.h:538:23: warning: declaration of ‘addr’ shadows a previous local [-Wshadow=compatible-local]
538 | unsigned long addr; \
| ^~~~
../../hw/arm/smmuv3.c:339:23: note: in expansion of macro ‘STE_CTXPTR’
339 | dma_addr_t addr = STE_CTXPTR(ste);
| ^~~~~~~~~~
../../hw/arm/smmuv3.c:339:16: note: shadowed declaration is here
339 | dma_addr_t addr = STE_CTXPTR(ste);
| ^~~~
Sidestep both of these problems by just using a single
expression rather than a statement expr.
For CMD_ADDR, we got the type of the variable right but still
run into -Wshadow problems:
In file included from ../../hw/arm/smmuv3.c:34:
../../hw/arm/smmuv3.c: In function ‘smmuv3_range_inval’:
../../hw/arm/smmuv3-internal.h:334:22: warning: declaration of ‘addr’ shadows a previous local [-Wshadow=compatible-local]
334 | uint64_t addr = high << 32 | (low << 12); \
| ^~~~
../../hw/arm/smmuv3.c:1104:28: note: in expansion of macro ‘CMD_ADDR’
1104 | dma_addr_t end, addr = CMD_ADDR(cmd);
| ^~~~~~~~
../../hw/arm/smmuv3.c:1104:21: note: shadowed declaration is here
1104 | dma_addr_t end, addr = CMD_ADDR(cmd);
| ^~~~
so convert it too.
CD_TTB has neither problem, but it is the only other macro in
the file that uses this pattern, so we convert it also for
consistency's sake.
We use extract64() rather than extract32() to avoid having
to explicitly cast the result to uint64_t.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-ID: <
20230922152944.
3583438-5-peter.maydell@linaro.org>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Peter Maydell [Fri, 22 Sep 2023 15:29:43 +0000 (16:29 +0100)]
hw/arm/smmuv3.c: Avoid shadowing variable
Avoid shadowing a variable in smmuv3_notify_iova():
../../hw/arm/smmuv3.c: In function ‘smmuv3_notify_iova’:
../../hw/arm/smmuv3.c:1043:23: warning: declaration of ‘event’ shadows a previous local [-Wshadow=local]
1043 | SMMUEventInfo event = {.inval_ste_allowed = true};
| ^~~~~
../../hw/arm/smmuv3.c:1038:19: note: shadowed declaration is here
1038 | IOMMUTLBEvent event;
| ^~~~~
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-ID: <
20230922152944.
3583438-4-peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Peter Maydell [Fri, 22 Sep 2023 15:29:42 +0000 (16:29 +0100)]
hw/misc/arm_sysctl.c: Avoid shadowing local variable
Avoid shadowing a local variable in arm_sysctl_write():
../../hw/misc/arm_sysctl.c: In function ‘arm_sysctl_write’:
../../hw/misc/arm_sysctl.c:537:26: warning: declaration of ‘val’ shadows a parameter [-Wshadow=local]
537 | uint32_t val;
| ^~~
../../hw/misc/arm_sysctl.c:388:39: note: shadowed declaration is here
388 | uint64_t val, unsigned size)
| ~~~~~~~~~^~~
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-ID: <
20230922152944.
3583438-3-peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Peter Maydell [Fri, 22 Sep 2023 15:29:41 +0000 (16:29 +0100)]
hw/intc/arm_gicv3_its: Avoid shadowing variable in do_process_its_cmd()
Avoid shadowing a local variable in do_process_its_cmd():
../../hw/intc/arm_gicv3_its.c:548:17: warning: declaration of ‘ite’ shadows a previous local [-Wshadow=compatible-local]
548 | ITEntry ite = {};
| ^~~
../../hw/intc/arm_gicv3_its.c:518:13: note: shadowed declaration is here
518 | ITEntry ite;
| ^~~
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-ID: <
20230922152944.
3583438-2-peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Ani Sinha [Fri, 22 Sep 2023 12:42:02 +0000 (18:12 +0530)]
hw/acpi: changes towards enabling -Wshadow=local
Code changes in acpi that addresses all compiler complaints coming from enabling
-Wshadow flags. Enabling -Wshadow catches cases of local variables shadowing
other local variables or parameters. These makes the code confusing and/or adds
bugs that are difficult to catch. See also
Subject: Help wanted for enabling -Wshadow=local
Message-Id: <87r0mqlf9x.fsf@pond.sub.org>
https://lore.kernel.org/qemu-devel/87r0mqlf9x.fsf@pond.sub.org
The code is tested to build with and without the flag turned on.
CC: Markus Armbruster <armbru@redhat.com>
CC: Philippe Mathieu-Daude <philmd@linaro.org>
CC: mst@redhat.com
CC: imammedo@redhat.com
Signed-off-by: Ani Sinha <anisinha@redhat.com>
Message-ID: <
20230922124203.127110-1-anisinha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
[Commit message tweaked]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Alberto Garcia [Fri, 22 Sep 2023 10:57:42 +0000 (12:57 +0200)]
test-throttle: don't shadow 'index' variable in do_test_accounting()
Fixes build with -Wshadow=local
Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-ID: <
20230922105742.81317-1-berto@igalia.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Cédric Le Goater [Mon, 18 Sep 2023 14:58:50 +0000 (16:58 +0200)]
spapr/drc: Clean up local variable shadowing in prop_get_fdt()
Rename 'name' variable to avoid this warning :
../hw/ppc/spapr_drc.c: In function ‘prop_get_fdt’:
../hw/ppc/spapr_drc.c:344:21: warning: declaration of ‘name’ shadows a parameter [-Wshadow=compatible-local]
344 | const char *name = NULL;
| ^~~~
../hw/ppc/spapr_drc.c:325:63: note: shadowed declaration is here
325 | static void prop_get_fdt(Object *obj, Visitor *v, const char *name,
| ~~~~~~~~~~~~^~~~
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-ID: <
20230918145850.241074-9-clg@kaod.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Cédric Le Goater [Mon, 18 Sep 2023 14:58:49 +0000 (16:58 +0200)]
spapr/pci: Clean up local variable shadowing in spapr_phb_realize()
Rename SysBusDevice variable to avoid this warning :
../hw/ppc/spapr_pci.c: In function ‘spapr_phb_realize’:
../hw/ppc/spapr_pci.c:1872:24: warning: declaration of ‘s’ shadows a previous local [-Wshadow=local]
1872 | SpaprPhbState *s;
| ^
../hw/ppc/spapr_pci.c:1829:19: note: shadowed declaration is here
1829 | SysBusDevice *s = SYS_BUS_DEVICE(dev);
| ^
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-ID: <
20230918145850.241074-8-clg@kaod.org>
Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Cédric Le Goater [Mon, 18 Sep 2023 14:58:48 +0000 (16:58 +0200)]
spapr/drc: Clean up local variable shadowing in rtas_ibm_configure_connector()
Remove extra 'drc_index' variable to avoid this warning :
../hw/ppc/spapr_drc.c: In function ‘rtas_ibm_configure_connector’:
../hw/ppc/spapr_drc.c:1240:26: warning: declaration of ‘drc_index’ shadows a previous local [-Wshadow=compatible-local]
1240 | uint32_t drc_index = spapr_drc_index(drc);
| ^~~~~~~~~
../hw/ppc/spapr_drc.c:1155:14: note: shadowed declaration is here
1155 | uint32_t drc_index;
| ^~~~~~~~~
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-ID: <
20230918145850.241074-7-clg@kaod.org>
Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Cédric Le Goater [Mon, 18 Sep 2023 14:58:47 +0000 (16:58 +0200)]
spapr: Clean up local variable shadowing in spapr_get_fw_dev_path()
Rename PCIDevice variable to avoid this warning :
../hw/ppc/spapr.c: In function ‘spapr_get_fw_dev_path’:
../hw/ppc/spapr.c:3217:20: warning: declaration of ‘pcidev’ shadows a previous local [-Wshadow=compatible-local]
3217 | PCIDevice *pcidev = CAST(PCIDevice, dev, TYPE_PCI_DEVICE);
| ^~~~~~
../hw/ppc/spapr.c:3147:16: note: shadowed declaration is here
3147 | PCIDevice *pcidev = CAST(PCIDevice, dev, TYPE_PCI_DEVICE);
| ^~~~~~
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-ID: <
20230918145850.241074-6-clg@kaod.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Cédric Le Goater [Mon, 18 Sep 2023 14:58:46 +0000 (16:58 +0200)]
spapr: Clean up local variable shadowing in spapr_init_cpus()
Remove extra 'i' variable to fix this warning :
../hw/ppc/spapr.c: In function ‘spapr_init_cpus’:
../hw/ppc/spapr.c:2668:13: warning: declaration of ‘i’ shadows a previous local [-Wshadow=compatible-local]
2668 | int i;
| ^
../hw/ppc/spapr.c:2645:9: note: shadowed declaration is here
2645 | int i;
| ^
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-ID: <
20230918145850.241074-5-clg@kaod.org>
Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Cédric Le Goater [Mon, 18 Sep 2023 14:58:45 +0000 (16:58 +0200)]
spapr: Clean up local variable shadowing in spapr_dt_cpus()
Introduce a helper routine defining one CPU device node to fix this
warning :
../hw/ppc/spapr.c: In function ‘spapr_dt_cpus’:
../hw/ppc/spapr.c:812:19: warning: declaration of ‘cs’ shadows a previous local [-Wshadow=compatible-local]
812 | CPUState *cs = rev[i];
| ^~
../hw/ppc/spapr.c:786:15: note: shadowed declaration is here
786 | CPUState *cs;
| ^~
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-ID: <
20230918145850.241074-4-clg@kaod.org>
Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Cédric Le Goater [Mon, 18 Sep 2023 14:58:44 +0000 (16:58 +0200)]
pnv/psi: Clean up local variable shadowing
to fix :
../hw/ppc/pnv_psi.c: In function ‘pnv_psi_p9_mmio_write’:
../hw/ppc/pnv_psi.c:741:24: warning: declaration of ‘addr’ shadows a parameter [-Wshadow=compatible-local]
741 | hwaddr addr = val & ~(PSIHB9_ESB_CI_VALID | PSIHB10_ESB_CI_64K);
| ^~~~
../hw/ppc/pnv_psi.c:702:56: note: shadowed declaration is here
702 | static void pnv_psi_p9_mmio_write(void *opaque, hwaddr addr,
| ~~~~~~~^~~~
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-ID: <
20230918145850.241074-3-clg@kaod.org>
Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Cédric Le Goater [Mon, 18 Sep 2023 14:58:43 +0000 (16:58 +0200)]
hw/ppc: Clean up local variable shadowing in _FDT helper routine
this fixes numerous warnings of this type :
In file included from ../hw/ppc/spapr_pci.c:43:
../hw/ppc/spapr_pci.c: In function ‘spapr_dt_phb’:
../include/hw/ppc/fdt.h:18:13: warning: declaration of ‘ret’ shadows a previous local [-Wshadow=compatible-local]
18 | int ret = (exp); \
| ^~~
../hw/ppc/spapr_pci.c:2355:5: note: in expansion of macro ‘_FDT’
2355 | _FDT(bus_off = fdt_add_subnode(fdt, 0, phb->dtbusname));
| ^~~~
../hw/ppc/spapr_pci.c:2311:24: note: shadowed declaration is here
2311 | int bus_off, i, j, ret;
| ^~~
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-ID: <
20230918145850.241074-2-clg@kaod.org>
Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Philippe Mathieu-Daudé [Mon, 4 Sep 2023 16:28:23 +0000 (18:28 +0200)]
hw/intc/openpic: Clean up local variable shadowing
Fix:
hw/intc/openpic.c: In function ‘openpic_gbl_write’:
hw/intc/openpic.c:614:17: warning: declaration of ‘idx’ shadows a previous local [-Wshadow=compatible-local]
614 | int idx;
| ^~~
hw/intc/openpic.c:568:9: note: shadowed declaration is here
568 | int idx;
| ^~~
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <
20230904162824.85385-3-philmd@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Philippe Mathieu-Daudé [Mon, 4 Sep 2023 16:28:22 +0000 (18:28 +0200)]
hw/core/machine: Clean up local variable shadowing
Fix:
hw/core/machine.c: In function ‘machine_initfn’:
hw/core/machine.c:1081:17: warning: declaration of ‘obj’ shadows a parameter [-Wshadow=compatible-local]
1081 | Object *obj = OBJECT(ms);
| ^~~
hw/core/machine.c:1065:36: note: shadowed declaration is here
1065 | static void machine_initfn(Object *obj)
| ~~~~~~~~^~~
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <
20230904162824.85385-2-philmd@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Philippe Mathieu-Daudé [Mon, 4 Sep 2023 16:12:34 +0000 (18:12 +0200)]
softmmu/physmem: Clean up local variable shadowing
Fix:
softmmu/physmem.c: In function ‘cpu_physical_memory_snapshot_and_clear_dirty’:
softmmu/physmem.c:916:27: warning: declaration of ‘offset’ shadows a parameter [-Wshadow=compatible-local]
916 | unsigned long offset = page % DIRTY_MEMORY_BLOCK_SIZE;
| ^~~~~~
softmmu/physmem.c:892:31: note: shadowed declaration is here
892 | (MemoryRegion *mr, hwaddr offset, hwaddr length, unsigned client)
| ~~~~~~~^~~~~~
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <
20230904161235.84651-23-philmd@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Philippe Mathieu-Daudé [Mon, 4 Sep 2023 16:12:33 +0000 (18:12 +0200)]
softmmu/memory: Clean up local variable shadowing
Fix:
softmmu/memory.c: In function ‘mtree_print_mr’:
softmmu/memory.c:3236:27: warning: declaration of ‘ml’ shadows a previous local [-Wshadow=compatible-local]
3236 | MemoryRegionList *ml;
| ^~
softmmu/memory.c:3213:32: note: shadowed declaration is here
3213 | MemoryRegionList *new_ml, *ml, *next_ml;
| ^~
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <
20230904161235.84651-22-philmd@linaro.org>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Philippe Mathieu-Daudé [Mon, 4 Sep 2023 16:12:32 +0000 (18:12 +0200)]
sysemu/device_tree: Clean up local variable shadowing
Fix:
hw/mips/boston.c:472:5: error: declaration shadows a local variable [-Werror,-Wshadow]
qemu_fdt_setprop_cells(fdt, name, "reg", reg_base, reg_size);
^
include/sysemu/device_tree.h:129:13: note: expanded from macro 'qemu_fdt_setprop_cells'
int i;
^
hw/mips/boston.c:461:9: note: previous declaration is here
int i;
^
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <
20230904161235.84651-21-philmd@linaro.org>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Philippe Mathieu-Daudé [Mon, 4 Sep 2023 16:12:31 +0000 (18:12 +0200)]
linux-user/strace: Clean up local variable shadowing
Fix:
linux-user/strace.c: In function ‘print_sockaddr’:
linux-user/strace.c:370:17: warning: declaration of ‘i’ shadows a previous local [-Wshadow=compatible-local]
370 | int i;
| ^
linux-user/strace.c:361:9: note: shadowed declaration is here
361 | int i;
| ^
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <
20230904161235.84651-20-philmd@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Philippe Mathieu-Daudé [Mon, 4 Sep 2023 16:12:29 +0000 (18:12 +0200)]
util/vhost-user-server: Clean up local variable shadowing
Fix:
util/vhost-user-server.c: In function ‘set_watch’:
util/vhost-user-server.c:274:20: warning: declaration of ‘vu_fd_watch’ shadows a previous local [-Wshadow=compatible-local]
274 | VuFdWatch *vu_fd_watch = g_new0(VuFdWatch, 1);
| ^~~~~~~~~~~
util/vhost-user-server.c:271:16: note: shadowed declaration is here
271 | VuFdWatch *vu_fd_watch = find_vu_fd_watch(server, fd);
| ^~~~~~~~~~~
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <
20230904161235.84651-18-philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Philippe Mathieu-Daudé [Mon, 4 Sep 2023 16:12:28 +0000 (18:12 +0200)]
crypto/cipher-gnutls.c: Clean up local variable shadowing
Fix:
In file included from crypto/cipher.c:140:
crypto/cipher-gnutls.c.inc: In function ‘qcrypto_gnutls_cipher_encrypt’:
crypto/cipher-gnutls.c.inc:116:17: warning: declaration of ‘err’ shadows a previous local [-Wshadow=compatible-local]
116 | int err = gnutls_cipher_init(&handle, ctx->galg, &gkey, NULL);
| ^~~
crypto/cipher-gnutls.c.inc:94:9: note: shadowed declaration is here
94 | int err;
| ^~~
---
crypto/cipher-gnutls.c.inc: In function ‘qcrypto_gnutls_cipher_decrypt’:
crypto/cipher-gnutls.c.inc:177:17: warning: declaration of ‘err’ shadows a previous local [-Wshadow=compatible-local]
177 | int err = gnutls_cipher_init(&handle, ctx->galg, &gkey, NULL);
| ^~~
crypto/cipher-gnutls.c.inc:154:9: note: shadowed declaration is here
154 | int err;
| ^~~
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <
20230904161235.84651-17-philmd@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Philippe Mathieu-Daudé [Mon, 4 Sep 2023 16:12:27 +0000 (18:12 +0200)]
net/eth: Clean up local variable shadowing
Fix:
net/eth.c:435:20: error: declaration shadows a local variable [-Werror,-Wshadow]
size_t input_size = iov_size(pkt, pkt_frags);
^
net/eth.c:413:16: note: previous declaration is here
size_t input_size = iov_size(pkt, pkt_frags);
^
Suggested-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <
20230904161235.84651-16-philmd@linaro.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Philippe Mathieu-Daudé [Mon, 4 Sep 2023 16:12:26 +0000 (18:12 +0200)]
hw/nios2: Clean up local variable shadowing
Fix:
hw/nios2/10m50_devboard.c: In function ‘nios2_10m50_ghrd_init’:
hw/nios2/10m50_devboard.c:101:22: warning: declaration of ‘dev’ shadows a previous local [-Wshadow=compatible-local]
101 | DeviceState *dev = qdev_new(TYPE_NIOS2_VIC);
| ^~~
hw/nios2/10m50_devboard.c:60:18: note: shadowed declaration is here
60 | DeviceState *dev;
| ^~~
hw/nios2/10m50_devboard.c:110:18: warning: declaration of ‘i’ shadows a previous local [-Wshadow=compatible-local]
110 | for (int i = 0; i < 32; i++) {
| ^
hw/nios2/10m50_devboard.c:67:9: note: shadowed declaration is here
67 | int i;
| ^
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <
20230904161235.84651-15-philmd@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Philippe Mathieu-Daudé [Mon, 4 Sep 2023 16:12:25 +0000 (18:12 +0200)]
hw/microblaze: Clean up local variable shadowing
Fix:
hw/microblaze/petalogix_ml605_mmu.c: In function ‘petalogix_ml605_init’:
hw/microblaze/petalogix_ml605_mmu.c:186:24: warning: declaration of ‘dinfo’ shadows a previous local [-Wshadow=compatible-local]
186 | DriveInfo *dinfo = drive_get(IF_MTD, 0, i);
| ^~~~~
hw/microblaze/petalogix_ml605_mmu.c:78:16: note: shadowed declaration is here
78 | DriveInfo *dinfo;
| ^~~~~
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <
20230904161235.84651-14-philmd@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Philippe Mathieu-Daudé [Mon, 4 Sep 2023 16:12:24 +0000 (18:12 +0200)]
hw/m68k: Clean up local variable shadowing
Fix:
hw/m68k/virt.c:263:13: error: declaration shadows a local variable [-Werror,-Wshadow]
BOOTINFOSTR(param_ptr, BI_COMMAND_LINE,
^
hw/m68k/bootinfo.h:47:13: note: expanded from macro 'BOOTINFOSTR'
int i; \
^
hw/m68k/virt.c:130:9: note: previous declaration is here
int i;
^
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <
20230904161235.84651-13-philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Philippe Mathieu-Daudé [Mon, 4 Sep 2023 16:12:21 +0000 (18:12 +0200)]
hw/arm/allwinner: Clean up local variable shadowing
Fix:
hw/arm/allwinner-r40.c:412:14: error: declaration shadows a local variable [-Werror,-Wshadow]
for (int i = 0; i < AW_R40_NUM_MMCS; i++) {
^
hw/arm/allwinner-r40.c:299:14: note: previous declaration is here
unsigned i;
^
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-ID: <
20230904161235.84651-10-philmd@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Philippe Mathieu-Daudé [Mon, 4 Sep 2023 16:12:20 +0000 (18:12 +0200)]
hw/arm/virt: Clean up local variable shadowing
Fix:
hw/arm/virt.c:821:22: error: declaration shadows a local variable [-Werror,-Wshadow]
qemu_irq irq = qdev_get_gpio_in(vms->gic,
^
hw/arm/virt.c:803:13: note: previous declaration is here
int irq;
^
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-ID: <
20230904161235.84651-9-philmd@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Philippe Mathieu-Daudé [Mon, 4 Sep 2023 16:12:19 +0000 (18:12 +0200)]
hw/arm/armv7m: Clean up local variable shadowing
Fix:
hw/arm/armv7m.c: In function ‘armv7m_realize’:
hw/arm/armv7m.c:520:27: warning: declaration of ‘sbd’ shadows a previous local [-Wshadow=compatible-local]
520 | SysBusDevice *sbd = SYS_BUS_DEVICE(&s->bitband[i]);
| ^~~
hw/arm/armv7m.c:278:19: note: shadowed declaration is here
278 | SysBusDevice *sbd;
| ^~~
---
hw/arm/armsse.c: In function ‘armsse_realize’:
hw/arm/armsse.c:1471:27: warning: declaration of ‘mr’ shadows a previous local [-Wshadow=compatible-local]
1471 | MemoryRegion *mr;
| ^~
hw/arm/armsse.c:917:19: note: shadowed declaration is here
917 | MemoryRegion *mr;
| ^~
---
hw/arm/armsse.c:1608:22: warning: declaration of ‘dev_splitter’ shadows a previous local [-Wshadow=compatible-local]
1608 | DeviceState *dev_splitter = DEVICE(splitter);
| ^~~~~~~~~~~~
hw/arm/armsse.c:923:18: note: shadowed declaration is here
923 | DeviceState *dev_splitter;
| ^~~~~~~~~~~~
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <
20230904161235.84651-8-philmd@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Philippe Mathieu-Daudé [Mon, 4 Sep 2023 16:12:18 +0000 (18:12 +0200)]
target/tricore: Clean up local variable shadowing
Fix:
target/tricore/translate.c:5016:18: warning: declaration of ‘temp’ shadows a previous local [-Wshadow=compatible-local]
5016 | TCGv temp = tcg_constant_i32(const9);
| ^~~~
target/tricore/translate.c:4958:10: note: shadowed declaration is here
4958 | TCGv temp;
| ^~~~
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <
20230904161235.84651-7-philmd@linaro.org>
Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Philippe Mathieu-Daudé [Mon, 4 Sep 2023 16:12:17 +0000 (18:12 +0200)]
target/m68k: Clean up local variable shadowing
Fix:
target/m68k/translate.c:828:18: error: declaration shadows a local variable [-Werror,-Wshadow]
TCGv tmp = tcg_temp_new();
^
target/m68k/translate.c:801:15: note: previous declaration is here
TCGv reg, tmp, result;
^
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-ID: <
20230904161235.84651-6-philmd@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Philippe Mathieu-Daudé [Mon, 4 Sep 2023 16:12:16 +0000 (18:12 +0200)]
target/mips: Clean up local variable shadowing
Fix:
target/mips/tcg/nanomips_translate.c.inc:4410:33: error: declaration shadows a local variable [-Werror,-Wshadow]
int32_t imm = extract32(ctx->opcode, 1, 13) |
^
target/mips/tcg/nanomips_translate.c.inc:3577:9: note: previous declaration is here
int imm;
^
target/mips/tcg/translate.c:15578:19: error: declaration shadows a local variable [-Werror,-Wshadow]
for (unsigned i = 1; i < 32; i++) {
^
target/mips/tcg/translate.c:15567:9: note: previous declaration is here
int i;
^
target/mips/tcg/msa_helper.c:7478:13: error: declaration shadows a local variable [-Werror,-Wshadow]
MSA_FLOAT_MAXOP(pwx->w[0], min, pws->w[0], pws->w[0], 32);
^
target/mips/tcg/msa_helper.c:7434:23: note: expanded from macro 'MSA_FLOAT_MAXOP'
float_status *status = &env->active_tc.msa_fp_status;
^
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <
20230904161235.84651-5-philmd@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Philippe Mathieu-Daudé [Mon, 4 Sep 2023 16:12:15 +0000 (18:12 +0200)]
target/arm/hvf: Clean up local variable shadowing
Per Peter Maydell analysis [*]:
The hvf_vcpu_exec() function is not documented, but in practice
its caller expects it to return either EXCP_DEBUG (for "this was
a guest debug exception you need to deal with") or something else
(presumably the intention being 0 for OK).
The hvf_sysreg_read() and hvf_sysreg_write() functions are also not
documented, but they return 0 on success, or 1 for a completely
unrecognized sysreg where we've raised the UNDEF exception (but
not if we raised an UNDEF exception for an unrecognized GIC sysreg --
I think this is a bug). We use this return value to decide whether
we need to advance the PC past the insn or not. It's not the same
as the return value we want to return from hvf_vcpu_exec().
Retain the variable as locally scoped but give it a name that
doesn't clash with the other function-scoped variable.
This fixes:
target/arm/hvf/hvf.c:1936:13: error: declaration shadows a local variable [-Werror,-Wshadow]
int ret = 0;
^
target/arm/hvf/hvf.c:1807:9: note: previous declaration is here
int ret;
^
[*] https://lore.kernel.org/qemu-devel/CAFEAcA_e+fU6JKtS+W63wr9cCJ6btu_hT_ydZWOwC0kBkDYYYQ@mail.gmail.com/
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <
20230904161235.84651-4-philmd@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Philippe Mathieu-Daudé [Mon, 4 Sep 2023 16:12:14 +0000 (18:12 +0200)]
target/arm/tcg: Clean up local variable shadowing
Fix:
target/arm/tcg/translate-m-nocp.c: In function ‘gen_M_fp_sysreg_read’:
target/arm/tcg/translate-m-nocp.c:509:18: warning: declaration of ‘tmp’ shadows a previous local [-Wshadow=compatible-local]
509 | TCGv_i32 tmp = load_cpu_field(v7m.fpdscr[M_REG_NS]);
| ^~~
target/arm/tcg/translate-m-nocp.c:433:14: note: shadowed declaration is here
433 | TCGv_i32 tmp;
| ^~~
---
target/arm/tcg/mve_helper.c: In function ‘helper_mve_vqshlsb’:
target/arm/tcg/mve_helper.c:1259:19: warning: declaration of ‘r’ shadows a previous local [-Wshadow=compatible-local]
1259 | typeof(N) r = FN(N, (int8_t)(M), sizeof(N) * 8, ROUND, &su32); \
| ^
target/arm/tcg/mve_helper.c:1267:5: note: in expansion of macro ‘WRAP_QRSHL_HELPER’
1267 | WRAP_QRSHL_HELPER(do_sqrshl_bhs, N, M, false, satp)
| ^~~~~~~~~~~~~~~~~
target/arm/tcg/mve_helper.c:927:22: note: in expansion of macro ‘DO_SQSHL_OP’
927 | TYPE r = FN(n[H##ESIZE(e)], m[H##ESIZE(e)], &sat); \
| ^~
target/arm/tcg/mve_helper.c:945:5: note: in expansion of macro ‘DO_2OP_SAT’
945 | DO_2OP_SAT(OP##b, 1, int8_t, FN) \
| ^~~~~~~~~~
target/arm/tcg/mve_helper.c:1277:1: note: in expansion of macro ‘DO_2OP_SAT_S’
1277 | DO_2OP_SAT_S(vqshls, DO_SQSHL_OP)
| ^~~~~~~~~~~~
---
target/arm/tcg/mve_helper.c: In function ‘do_sqrshl48_d’:
target/arm/tcg/mve_helper.c:2463:17: warning: declaration of ‘extval’ shadows a previous local [-Wshadow=compatible-local]
2463 | int64_t extval = sextract64(src << shift, 0, 48);
| ^~~~~~
target/arm/tcg/mve_helper.c:2443:18: note: shadowed declaration is here
2443 | int64_t val, extval;
| ^~~~~~
---
target/arm/tcg/mve_helper.c: In function ‘do_uqrshl48_d’:
target/arm/tcg/mve_helper.c:2495:18: warning: declaration of ‘extval’ shadows a previous local [-Wshadow=compatible-local]
2495 | uint64_t extval = extract64(src << shift, 0, 48);
| ^~~~~~
target/arm/tcg/mve_helper.c:2479:19: note: shadowed declaration is here
2479 | uint64_t val, extval;
| ^~~~~~
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <
20230904161235.84651-3-philmd@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Philippe Mathieu-Daudé [Mon, 4 Sep 2023 16:12:13 +0000 (18:12 +0200)]
tcg: Clean up local variable shadowing
Fix:
tcg/tcg.c:2551:27: error: declaration shadows a local variable [-Werror,-Wshadow]
MemOp op = get_memop(oi);
^
tcg/tcg.c:2437:12: note: previous declaration is here
TCGOp *op;
^
accel/tcg/tb-maint.c:245:18: error: declaration shadows a local variable [-Werror,-Wshadow]
for (int i = 0; i < V_L2_SIZE; i++) {
^
accel/tcg/tb-maint.c:210:9: note: previous declaration is here
int i;
^
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <
20230904161235.84651-2-philmd@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Bastian Koppelmann [Wed, 13 Sep 2023 10:53:26 +0000 (12:53 +0200)]
target/tricore: Change effective address (ea) to target_ulong
as this is an effective address and those cannot be signed,
it should not be a signed integer.
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Message-ID: <
20230913105326.40832-11-kbastian@mail.uni-paderborn.de>
Bastian Koppelmann [Wed, 13 Sep 2023 10:53:25 +0000 (12:53 +0200)]
target/tricore: Remove CSFRs from cpu.h
these are already defined in 'csfr.h.inc'. We don't need to duplicate
these registers.
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Message-ID: <
20230913105326.40832-10-kbastian@mail.uni-paderborn.de>
Bastian Koppelmann [Wed, 13 Sep 2023 10:53:19 +0000 (12:53 +0200)]
tests/tcg: Reset result register after each test
some insns use the result register implicitly as an input. Thus, we
could end up with data from the previous insn spilling over.
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Message-ID: <
20230913105326.40832-4-kbastian@mail.uni-paderborn.de>
Bastian Koppelmann [Wed, 13 Sep 2023 10:53:18 +0000 (12:53 +0200)]
hw/tricore: Log failing test in testdevice
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Message-ID: <
20230913105326.40832-3-kbastian@mail.uni-paderborn.de>
Markus Armbruster [Thu, 21 Sep 2023 12:13:12 +0000 (14:13 +0200)]
qobject atomics osdep: Make a few macros more hygienic
Variables declared in macros can shadow other variables. Much of the
time, this is harmless, e.g.:
#define _FDT(exp) \
do { \
int ret = (exp); \
if (ret < 0) { \
error_report("error creating device tree: %s: %s", \
#exp, fdt_strerror(ret)); \
exit(1); \
} \
} while (0)
Harmless shadowing in h_client_architecture_support():
target_ulong ret;
[...]
ret = do_client_architecture_support(cpu, spapr, vec, fdt_bufsize);
if (ret == H_SUCCESS) {
_FDT((fdt_pack(spapr->fdt_blob)));
[...]
}
return ret;
However, we can get in trouble when the shadowed variable is used in a
macro argument:
#define QOBJECT(obj) ({ \
typeof(obj) o = (obj); \
o ? container_of(&(o)->base, QObject, base) : NULL; \
})
QOBJECT(o) expands into
({
---> typeof(o) o = (o);
o ? container_of(&(o)->base, QObject, base) : NULL;
})
Unintended variable name capture at --->. We'd be saved by
-Winit-self. But I could certainly construct more elaborate death
traps that don't trigger it.
To reduce the risk of trapping ourselves, we use variable names in
macros that no sane person would use elsewhere. Here's our actual
definition of QOBJECT():
#define QOBJECT(obj) ({ \
typeof(obj) _obj = (obj); \
_obj ? container_of(&(_obj)->base, QObject, base) : NULL; \
})
Works well enough until we nest macro calls. For instance, with
#define qobject_ref(obj) ({ \
typeof(obj) _obj = (obj); \
qobject_ref_impl(QOBJECT(_obj)); \
_obj; \
})
the expression qobject_ref(obj) expands into
({
typeof(obj) _obj = (obj);
qobject_ref_impl(
({
---> typeof(_obj) _obj = (_obj);
_obj ? container_of(&(_obj)->base, QObject, base) : NULL;
}));
_obj;
})
Unintended variable name capture at --->.
The only reliable way to prevent unintended variable name capture is
-Wshadow.
One blocker for enabling it is shadowing hiding in function-like
macros like
qdict_put(dict, "name", qobject_ref(...))
qdict_put() wraps its last argument in QOBJECT(), and the last
argument here contains another QOBJECT().
Use dark preprocessor sorcery to make the macros that give us this
problem use different variable names on every call.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-ID: <
20230921121312.
1301864-8-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Markus Armbruster [Thu, 21 Sep 2023 12:13:11 +0000 (14:13 +0200)]
block: Clean up local variable shadowing
Local variables shadowing other local variables or parameters make the
code needlessly hard to understand. Tracked down with -Wshadow=local.
Clean up: delete inner declarations when they are actually redundant,
else rename variables.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Acked-by: Anthony PERARD <anthony.perard@citrix.com>
Acked-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <
20230921121312.
1301864-7-armbru@redhat.com>
Markus Armbruster [Thu, 21 Sep 2023 12:13:10 +0000 (14:13 +0200)]
block/vdi: Clean up local variable shadowing
Local variables shadowing other local variables or parameters make the
code needlessly hard to understand. Tracked down with -Wshadow=local.
Clean up: delete inner declarations when they are actually redundant,
else rename variables.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <
20230921121312.
1301864-6-armbru@redhat.com>
Markus Armbruster [Thu, 21 Sep 2023 12:13:09 +0000 (14:13 +0200)]
block/dirty-bitmap: Clean up local variable shadowing
Local variables shadowing other local variables or parameters make the
code needlessly hard to understand. Tracked down with -Wshadow=local.
Clean up: rename both the pair of parameters and the pair of local
variables. While there, move the local variables to function scope.
Suggested-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <
20230921121312.
1301864-5-armbru@redhat.com>
Markus Armbruster [Thu, 21 Sep 2023 12:13:08 +0000 (14:13 +0200)]
ui: Clean up local variable shadowing
Local variables shadowing other local variables or parameters make the
code needlessly hard to understand. Tracked down with -Wshadow=local.
Clean up: delete inner declarations when they are actually redundant,
else rename variables.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-ID: <
20230921121312.
1301864-4-armbru@redhat.com>
Markus Armbruster [Thu, 21 Sep 2023 12:13:07 +0000 (14:13 +0200)]
migration: Clean up local variable shadowing
Local variables shadowing other local variables or parameters make the
code needlessly hard to understand. Tracked down with -Wshadow=local.
Clean up: delete inner declarations when they are actually redundant,
else rename variables.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Li Zhijian <lizhijian@fujitsu.com>
Message-ID: <
20230921121312.
1301864-3-armbru@redhat.com>
Markus Armbruster [Thu, 21 Sep 2023 12:13:06 +0000 (14:13 +0200)]
migration/rdma: Fix save_page method to fail on polling error
qemu_rdma_save_page() reports polling error with error_report(), then
succeeds anyway. This is because the variable holding the polling
status *shadows* the variable the function returns. The latter
remains zero.
Broken since day one, and duplicated more recently.
Fixes:
2da776db4846 (rdma: core logic)
Fixes:
b390afd8c50b (migration/rdma: Fix out of order wrid)
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Li Zhijian <lizhijian@fujitsu.com>
Message-ID: <
20230921121312.
1301864-2-armbru@redhat.com>
Richard Henderson [Wed, 13 Sep 2023 02:08:11 +0000 (19:08 -0700)]
accel/tcg: Always require can_do_io
Require i/o as the last insn of a TranslationBlock always,
not only with icount. This is required for i/o that alters
the address space, such as a pci config space write.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1866
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Richard Henderson [Thu, 14 Sep 2023 15:36:11 +0000 (08:36 -0700)]
accel/tcg: Always set CF_LAST_IO with CF_NOIRQ
Without this we can get see loops through cpu_io_recompile,
in which the cpu makes no progress.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Richard Henderson [Thu, 14 Sep 2023 15:26:47 +0000 (08:26 -0700)]
accel/tcg: Improve setting of can_do_io at start of TB
Initialize can_do_io to true if this the TB has CF_LAST_IO
and will consist of a single instruction. This avoids a
set to 0 followed immediately by a set to 1.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Richard Henderson [Thu, 14 Sep 2023 15:06:14 +0000 (08:06 -0700)]
accel/tcg: Track current value of can_do_io in the TB
Simplify translator_io_start by recording the current
known value of can_do_io within DisasContextBase.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Richard Henderson [Thu, 14 Sep 2023 14:48:39 +0000 (07:48 -0700)]
accel/tcg: Hoist CF_MEMI_ONLY check outside translation loop
The condition checked is loop invariant; check it only once.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Richard Henderson [Thu, 14 Sep 2023 14:39:07 +0000 (07:39 -0700)]
accel/tcg: Avoid load of icount_decr if unused
With CF_NOIRQ and without !CF_USE_ICOUNT, the load isn't used.
Avoid emitting it.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Bastian Koppelmann [Wed, 13 Sep 2023 10:53:17 +0000 (12:53 +0200)]
tests/tcg/tricore: Extended and non-extened regs now match
RSx for d regs and e regs now use the same numbering. This makes sure
that mixing d and e registers in an insn test will not overwrite data
between registers.
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Message-ID: <
20230913105326.40832-2-kbastian@mail.uni-paderborn.de>
Bastian Koppelmann [Mon, 28 Aug 2023 11:26:51 +0000 (13:26 +0200)]
target/tricore: Fix FTOUZ being ISA v1.3.1 up
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Message-ID: <
20230828112651.522058-12-kbastian@mail.uni-paderborn.de>
Bastian Koppelmann [Mon, 28 Aug 2023 11:26:50 +0000 (13:26 +0200)]
target/tricore: Replace cpu_*_code with translator_*
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Message-ID: <
20230828112651.522058-11-kbastian@mail.uni-paderborn.de>
Bastian Koppelmann [Mon, 28 Aug 2023 11:26:49 +0000 (13:26 +0200)]
target/tricore: Swap src and dst reg for RCRR_INSERT
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Message-ID: <
20230828112651.522058-10-kbastian@mail.uni-paderborn.de>
Bastian Koppelmann [Mon, 28 Aug 2023 11:26:48 +0000 (13:26 +0200)]
target/tricore: Fix RCPW/RRPW_INSERT insns for width = 0
we would crash if width was 0 for these insns, as tcg_gen_deposit() is
undefined for that case. For TriCore, width = 0 is a mov from the src reg
to the dst reg, so we special case this here.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Message-ID: <
20230828112651.522058-9-kbastian@mail.uni-paderborn.de>
Bastian Koppelmann [Mon, 28 Aug 2023 11:26:47 +0000 (13:26 +0200)]
target/tricore: Implement hptof insn
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1667
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Message-ID: <
20230828112651.522058-8-kbastian@mail.uni-paderborn.de>
Bastian Koppelmann [Mon, 28 Aug 2023 11:26:46 +0000 (13:26 +0200)]
target/tricore: Implement ftohp insn
reported in https://gitlab.com/qemu-project/qemu/-/issues/1667
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Message-ID: <
20230828112651.522058-7-kbastian@mail.uni-paderborn.de>
Bastian Koppelmann [Mon, 28 Aug 2023 11:26:45 +0000 (13:26 +0200)]
target/tricore: Clarify special case for FTOUZ insn
this is not something other ISAs do, so clarify it with a comment.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Message-ID: <
20230828112651.522058-6-kbastian@mail.uni-paderborn.de>
Bastian Koppelmann [Mon, 28 Aug 2023 11:26:44 +0000 (13:26 +0200)]
target/tricore: Implement FTOU insn
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Message-ID: <
20230828112651.522058-5-kbastian@mail.uni-paderborn.de>
Bastian Koppelmann [Mon, 28 Aug 2023 11:26:43 +0000 (13:26 +0200)]
target/tricore: Correctly handle FPU RM from PSW
when we reconstructed PSW using psw_read(), we were trying to clear the
cached USB bits out of env->PSW. The mask was wrong and we would clear
PSW.RM as well.
when we write the PSW using psw_write() we update the rounding modes in
env->fp_status for softfloat. The order of bits used by TriCore is not
the one used by softfloat.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Message-ID: <
20230828112651.522058-4-kbastian@mail.uni-paderborn.de>
Bastian Koppelmann [Mon, 28 Aug 2023 11:26:42 +0000 (13:26 +0200)]
target/tricore: Implement CRCN insn
reported in https://gitlab.com/qemu-project/qemu/-/issues/1667
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Message-ID: <
20230828112651.522058-3-kbastian@mail.uni-paderborn.de>