Commit Graph

83981 Commits

Author SHA1 Message Date
Alex Chen
268c02424b hw/usb: Fix bad printf format specifiers
We should use printf format specifier "%u" instead of "%d" for
argument of type "unsigned int".

Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Alex Chen <alex.chen@huawei.com>
Message-id: 20201119025751.45750-1-alex.chen@huawei.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2021-01-22 14:51:35 +01:00
Fabrice Fontaine
a3c27ea034 hw/usb/host-libusb.c: fix build with kernel < 5.0
USBDEVFS_GET_SPEED is used since version 5.2.0 and
202d69a715
resulting in the following build failure with kernel < 5.0:

../hw/usb/host-libusb.c: In function 'usb_host_open':
../hw/usb/host-libusb.c:953:32: error: 'USBDEVFS_GET_SPEED' undeclared (first use in this function); did you mean 'USBDEVFS_GETDRIVER'?
         int rc = ioctl(hostfd, USBDEVFS_GET_SPEED, NULL);
                                ^~~~~~~~~~~~~~~~~~
                                USBDEVFS_GETDRIVER

A tentative was made to fix this build failure with
4969e697c1

However, the assumption that distros with old kernels also have old
libusb is just wrong so also add a check for defined(USBDEVFS_GET_SPEED)

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Message-id: 20201213213016.457350-1-fontaine.fabrice@gmail.com

[ kraxel: codestyle whitespace fixup ]

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2021-01-22 14:51:35 +01:00
Peter Maydell
0e32462630 linux-user pull request 20210119-v3
Remove obsolete F_SHLCK and F_EXLCK translation
 Update sockopt
 Add F_ADD_SEALS and F_GET_SEALS
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Merge remote-tracking branch 'remotes/vivier2/tags/linux-user-for-6.0-pull-request' into staging

linux-user pull request 20210119-v3

Remove obsolete F_SHLCK and F_EXLCK translation
Update sockopt
Add F_ADD_SEALS and F_GET_SEALS

# gpg: Signature made Thu 21 Jan 2021 12:33:04 GMT
# gpg:                using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C
# gpg:                issuer "laurent@vivier.eu"
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* remotes/vivier2/tags/linux-user-for-6.0-pull-request:
  linux-user: Remove obsolete F_SHLCK and F_EXLCK translation
  linux-user: Add IPv6 options to do_print_sockopt()
  linux-user: add missing IPv6 get/setsockopt option
  linux-user: add missing UDP get/setsockopt option
  linux-user: Support F_ADD_SEALS and F_GET_SEALS fcntls

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-01-22 10:35:55 +00:00
Peter Maydell
a957d25dde s390x updates:
- headers update to Linux 5.11-rc2
 - fix tcg emulation for some instructions that are generated by
   clang Linux kernel builds
 - vfio-ccw: wire up the device unplug notification mechanism
 - fix a gcc 11 warning
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Merge remote-tracking branch 'remotes/cohuck-gitlab/tags/s390x-20210121' into staging

s390x updates:
- headers update to Linux 5.11-rc2
- fix tcg emulation for some instructions that are generated by
  clang Linux kernel builds
- vfio-ccw: wire up the device unplug notification mechanism
- fix a gcc 11 warning

# gpg: Signature made Thu 21 Jan 2021 12:08:12 GMT
# gpg:                using RSA key C3D0D66DC3624FF6A8C018CEDECF6B93C6F02FAF
# gpg:                issuer "cohuck@redhat.com"
# gpg: Good signature from "Cornelia Huck <conny@cornelia-huck.de>" [unknown]
# gpg:                 aka "Cornelia Huck <huckc@linux.vnet.ibm.com>" [full]
# gpg:                 aka "Cornelia Huck <cornelia.huck@de.ibm.com>" [full]
# gpg:                 aka "Cornelia Huck <cohuck@kernel.org>" [unknown]
# gpg:                 aka "Cornelia Huck <cohuck@redhat.com>" [unknown]
# Primary key fingerprint: C3D0 D66D C362 4FF6 A8C0  18CE DECF 6B93 C6F0 2FAF

* remotes/cohuck-gitlab/tags/s390x-20210121:
  s390x: Use strpadcpy for copying vm name
  vfio-ccw: Connect the device request notifier
  Update linux headers to 5.11-rc2
  update-linux-headers: Include const.h
  s390x/tcg: Ignore register content if b1/b2 is zero when handling EXECUTE
  tests/tcg/s390x: Fix EXRL tests
  s390x/tcg: Don't ignore content in r0 when not specified via "b" or "x"
  s390x/tcg: Fix RISBHG
  s390x/tcg: Fix ALGSI

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-01-21 19:09:45 +00:00
Michael Forney
b1d2e476e9 linux-user: Remove obsolete F_SHLCK and F_EXLCK translation
These lock types are unsupported by Linux since v2.2[0][1] and
always return EINVAL (except on SPARC up until v2.6, which just
warned).

musl libc does not define these constants, so just remove them from
the translation cases.

[0] https://github.com/mpe/linux-fullhistory/blob/v2.2.0/fs/locks.c#L322-L324
[1] https://github.com/mpe/linux-fullhistory/blob/v2.2.0/fs/locks.c#L429-L445

Signed-off-by: Michael Forney <mforney@mforney.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20210114223602.9004-1-mforney@mforney.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-01-21 13:27:34 +01:00
Shu-Chun Weng
38987eabb1 linux-user: Add IPv6 options to do_print_sockopt()
Signed-off-by: Shu-Chun Weng <scw@google.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20201218193213.3566856-5-scw@google.com>
[lv: Add missing <linux/in6.h> include for IPV6_ADDR_PREFERENCES]
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-01-21 13:27:08 +01:00
Peter Maydell
fef80ea073 nbd patches for 2021-01-20
- minor resource leak fixes in qemu-nbd
 - ensure proper aio context when nbd server uses iothreads
 - iotest refactorings in preparation for rewriting ./check to be more
 flexible, and preparing for more nbd server reconnect features
 -----BEGIN PGP SIGNATURE-----
 
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 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/ericb/tags/pull-nbd-2021-01-20' into staging

nbd patches for 2021-01-20

- minor resource leak fixes in qemu-nbd
- ensure proper aio context when nbd server uses iothreads
- iotest refactorings in preparation for rewriting ./check to be more
flexible, and preparing for more nbd server reconnect features

# gpg: Signature made Thu 21 Jan 2021 02:28:19 GMT
# gpg:                using RSA key 71C2CC22B1C4602927D2F3AAA7A16B4A2527436A
# gpg: Good signature from "Eric Blake <eblake@redhat.com>" [full]
# gpg:                 aka "Eric Blake (Free Software Programmer) <ebb9@byu.net>" [full]
# gpg:                 aka "[jpeg image of size 6874]" [full]
# Primary key fingerprint: 71C2 CC22 B1C4 6029 27D2  F3AA A7A1 6B4A 2527 436A

* remotes/ericb/tags/pull-nbd-2021-01-20:
  iotests.py: qemu_io(): reuse qemu_tool_pipe_and_status()
  iotests.py: fix qemu_tool_pipe_and_status()
  iotests/264: fix style
  iotests: define group in each iotest
  iotests/294: add shebang line
  iotests: make tests executable
  iotests: fix some whitespaces in test output files
  iotests/303: use dot slash for qcow2.py running
  iotests/277: use dot slash for nbd-fault-injector.py running
  nbd/server: Quiesce coroutines on context switch
  block: Honor blk_set_aio_context() context requirements
  qemu-nbd: Fix a memleak in nbd_client_thread()
  qemu-nbd: Fix a memleak in qemu_nbd_client_list()

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-01-21 10:44:28 +00:00
Miroslav Rezanina
e6a80232f4 s390x: Use strpadcpy for copying vm name
Using strncpy with length equal to the size of target array, GCC 11
reports following warning:

  warning: '__builtin_strncpy' specified bound 256 equals destination size [-Wstringop-truncation]

We can prevent this warning by using strpadcpy that copies string
up to specified length, zeroes target array after copied string
and does not raise warning when length is equal to target array
size (and ending '\0' is discarded).

Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <6f86915755219cf6a671788075da4809b57f7d7b.1610607906.git.mrezanin@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2021-01-21 11:19:45 +01:00
Eric Farman
b2f96f9e4f vfio-ccw: Connect the device request notifier
Now that the vfio-ccw code has a notifier interface to request that
a device be unplugged, let's wire that together.

Signed-off-by: Eric Farman <farman@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Message-Id: <20210104202057.48048-4-farman@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2021-01-21 11:19:45 +01:00
Eric Farman
b3c818a47f Update linux headers to 5.11-rc2
Signed-off-by: Eric Farman <farman@linux.ibm.com>
Message-Id: <20210104202057.48048-3-farman@linux.ibm.com>
[CH: dropped qatomic->atomic changes in pvrdma_ring.h]
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2021-01-21 11:19:45 +01:00
Eric Farman
ab5ec23f9c update-linux-headers: Include const.h
Kernel commit a85cbe6159ff ("uapi: move constants from
<linux/kernel.h> to <linux/const.h>") breaks our script
because of the unrecognized include. Let's add that to
our processing.

Signed-off-by: Eric Farman <farman@linux.ibm.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210104202057.48048-2-farman@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2021-01-21 11:19:45 +01:00
David Hildenbrand
e312fa1d78 s390x/tcg: Ignore register content if b1/b2 is zero when handling EXECUTE
In our EXECUTE fast path, we have to ignore the content of r0, if
specified by b1 or b2.

Fixes: d376f123c7 ("target/s390x: Re-implement a few EXECUTE target insns directly")
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210111163845.18148-6-david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2021-01-21 11:19:45 +01:00
David Hildenbrand
d944293d9a tests/tcg/s390x: Fix EXRL tests
The current EXRL tests crash on real machines: we must not use r0 as a base
register for trt/trtr, otherwise the content gets ignored. Also, we must
not use r0 for exrl, otherwise it gets ignored.

Let's use the "a" constraint so we get a general purpose register != r0.
For op2, we can simply specify a memory operand directly via "Q" (Memory
reference without index register and with short displacement).

Fixes: ad8c851d2e ("target/s390x: add EX support for TRT and TRTR")
Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20210111163845.18148-5-david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2021-01-21 11:19:45 +01:00
David Hildenbrand
401bf46779 s390x/tcg: Don't ignore content in r0 when not specified via "b" or "x"
Using get_address() with register identifiers comming from an "r" field
is wrong: if the "r" field designates "r0", we don't read the content
and instead assume 0 - which should only be applied when the register
was specified via "b" or "x".

PoP 5-11 "Operand-Address Generation":
  "A zero in any of the B1, B2, X2, B3, or B4 fields indicates the absence
   of the corresponding address component. For the absent component, a zero
   is used in forming the intermediate sum, regardless of the contents of
   general register 0. A displacement of zero has no special significance."

This BUG became visible for CSPG as generated by LLVM-12 in the upstream
Linux kernel (v5.11-rc2), used while creating the linear mapping in
vmem_map_init(): Trying to store to address 0 results in a Low Address
Protection exception.

Debugging this was more complicated than it could have been: The program
interrupt handler in the kernel will try to crash the kernel: doing so, it
will enable DAT. As the linear mapping is not created yet (asce=0), we run
into an addressing exception while tring to walk non-existant DAT tables,
resulting in a program exception loop.

This allows for booting upstream Linux kernels compiled by clang-12. Most
of these cases seem to be broken forever.

Reported-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210111163845.18148-4-david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2021-01-21 11:19:45 +01:00
David Hildenbrand
c23908305b s390x/tcg: Fix RISBHG
RISBHG is broken and currently hinders clang-11 builds of upstream kernels
from booting: the kernel crashes early, while decompressing the image.

  [...]
   Kernel fault: interruption code 0005 ilc:2
   Kernel random base: 0000000000000000
   PSW : 0000200180000000 0000000000017a1e
         R:0 T:0 IO:0 EX:0 Key:0 M:0 W:0 P:0 AS:0 CC:2 PM:0 RI:0 EA:3
   GPRS: 0000000000000001 0000000c00000000 00000003fffffff4 00000000fffffff0
         0000000000000000 00000000fffffff4 000000000000000c 00000000fffffff0
         00000000fffffffc 0000000000000000 00000000fffffff8 00000000008e25a8
         0000000000000009 0000000000000002 0000000000000008 000000000000bce0

One example of a buggy instruction is:

    17dde:       ec 1e 00 9f 20 5d       risbhg  %r1,%r14,0,159,32

With %r14 = 0x9 and %r1 = 0x7 should result in %r1 = 0x900000007, however,
results in %r1 = 0.

Let's interpret values of i3/i4 as documented in the PoP and make
computation of "mask" only based on i3 and i4 and use "pmask" only at the
very end to make sure wrapping is only applied to the high/low doubleword.

With this patch, I can successfully boot a v5.11-rc2 kernel built with
clang-11, and gcc builds keep on working.

Fixes: 2d6a869833 ("target-s390: Implement RISBG")
Reported-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210111163845.18148-3-david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2021-01-21 11:19:45 +01:00
David Hildenbrand
ad11129b30 s390x/tcg: Fix ALGSI
Looks like something went wrong whiel touching that line. Instead of "r1"
we need a new temporary. Also, we have to pass MO_TEQ, to indicate that
we are working with 64-bit values. Let's revert these changes.

Fixes: ff26d287bd ("target/s390x: Improve cc computation for ADD LOGICAL")
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210111163845.18148-2-david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2021-01-21 11:19:45 +01:00
Vladimir Sementsov-Ogievskiy
f874e7fa3b iotests.py: qemu_io(): reuse qemu_tool_pipe_and_status()
Just drop code duplication.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20201130134024.19212-5-vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
2021-01-20 20:24:51 -06:00
Vladimir Sementsov-Ogievskiy
5bd04f613a iotests.py: fix qemu_tool_pipe_and_status()
qemu_img_args variable is unrelated here. We should print just args.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20201130134024.19212-4-vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
2021-01-20 20:22:39 -06:00
Vladimir Sementsov-Ogievskiy
51223cbfcc iotests/264: fix style
Fix long line, extra import and one mypy complaint about incompatible
int and float.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20201118180433.11931-7-vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
2021-01-20 20:22:31 -06:00
Vladimir Sementsov-Ogievskiy
9dd003a998 iotests: define group in each iotest
We are going to drop group file. Define group in tests as a preparatory
step.

The patch is generated by

    cd tests/qemu-iotests

    grep '^[0-9]\{3\} ' group | while read line; do
        file=$(awk '{print $1}' <<< "$line");
        groups=$(sed -e 's/^... //' <<< "$line");
        awk "NR==2{print \"# group: $groups\"}1" $file > tmp;
        cat tmp > $file;
    done

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20210116134424.82867-7-vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
2021-01-20 14:53:22 -06:00
Vladimir Sementsov-Ogievskiy
92a476e959 iotests/294: add shebang line
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20210116134424.82867-6-vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
2021-01-20 14:53:22 -06:00
Vladimir Sementsov-Ogievskiy
fd6ce1d085 iotests: make tests executable
All other test files are executable. Fix these.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20210116134424.82867-5-vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
2021-01-20 14:53:22 -06:00
Vladimir Sementsov-Ogievskiy
f93e19fb03 iotests: fix some whitespaces in test output files
We are going to be stricter about comparing test result with .out
files. So, fix some whitespaces now.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20210116134424.82867-4-vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
2021-01-20 14:53:22 -06:00
Vladimir Sementsov-Ogievskiy
fb07b5c7f2 iotests/303: use dot slash for qcow2.py running
If you run './check 303', check includes common.config which adjusts
$PATH to include '.' first, and therefore finds qcow2.py on PATH.  But
if you run './303' directly, there is nothing to adjust PATH, and if
'.' is not already on your PATH by other means, the test fails because
the executable is not found.  Adjust how we invoke the helper
executable to avoid needing a PATH search in the first place.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20210116134424.82867-3-vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
2021-01-20 14:53:22 -06:00
Vladimir Sementsov-Ogievskiy
ec77662e60 iotests/277: use dot slash for nbd-fault-injector.py running
If you run './check 277', check includes common.config which adjusts
$PATH to include '.' first, and therefore finds nbd-fault-injector.py
on PATH.  But if you run './277' directly, there is nothing to adjust
PATH, and if '.' is not already on your PATH by other means, the test
fails because the executable is not found.  Adjust how we invoke the
helper executable to avoid needing a PATH search in the first place.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20210116134424.82867-2-vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
2021-01-20 14:53:22 -06:00
Sergio Lopez
f148ae7d36 nbd/server: Quiesce coroutines on context switch
When switching between AIO contexts we need to me make sure that both
recv_coroutine and send_coroutine are not scheduled to run. Otherwise,
QEMU may crash while attaching the new context with an error like
this one:

aio_co_schedule: Co-routine was already scheduled in 'aio_co_schedule'

To achieve this we need a local implementation of
'qio_channel_readv_all_eof' named 'nbd_read_eof' (a trick already done
by 'nbd/client.c') that allows us to interrupt the operation and to
know when recv_coroutine is yielding.

With this in place, we delegate detaching the AIO context to the
owning context with a BH ('nbd_aio_detach_bh') scheduled using
'aio_wait_bh_oneshot'. This BH signals that we need to quiesce the
channel by setting 'client->quiescing' to 'true', and either waits for
the coroutine to finish using AIO_WAIT_WHILE or, if it's yielding in
'nbd_read_eof', actively enters the coroutine to interrupt it.

RHBZ: https://bugzilla.redhat.com/show_bug.cgi?id=1900326
Signed-off-by: Sergio Lopez <slp@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20201214170519.223781-4-slp@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
2021-01-20 14:48:54 -06:00
Sergio Lopez
c7040ff64e block: Honor blk_set_aio_context() context requirements
The documentation for bdrv_set_aio_context_ignore() states this:

 * The caller must own the AioContext lock for the old AioContext of bs, but it
 * must not own the AioContext lock for new_context (unless new_context is the
 * same as the current context of bs).

As blk_set_aio_context() makes use of this function, this rule also
applies to it.

Fix all occurrences where this rule wasn't honored.

Suggested-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Sergio Lopez <slp@redhat.com>
Message-Id: <20201214170519.223781-2-slp@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
2021-01-20 14:48:08 -06:00
Alex Chen
af74b550bd qemu-nbd: Fix a memleak in nbd_client_thread()
When the qio_channel_socket_connect_sync() fails
we should goto 'out_socket' label to free the 'sioc' instead of
goto 'out' label.
In addition, there's a lot of redundant code in the successful branch
and the error branch, optimize it.

Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Alex Chen <alex.chen@huawei.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20201208134944.27962-1-alex.chen@huawei.com>
2021-01-20 14:48:05 -06:00
Alex Chen
992809bf8b qemu-nbd: Fix a memleak in qemu_nbd_client_list()
When the qio_channel_socket_connect_sync() fails
we should goto 'out' label to free the 'sioc' instead of return.

Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Alex Chen <alex.chen@huawei.com>
Message-Id: <20201130123651.17543-1-alex.chen@huawei.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
2021-01-20 14:48:05 -06:00
Peter Maydell
954b83f132 * Fixes for compiling QEMU on Alpine Linux
* Add Alpine Linux to the gitlab-CI
 * Some small fixes for qtests
 * Updates to the MAINTAINERS file
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Merge remote-tracking branch 'remotes/huth-gitlab/tags/pull-request-2021-01-20' into staging

* Fixes for compiling QEMU on Alpine Linux
* Add Alpine Linux to the gitlab-CI
* Some small fixes for qtests
* Updates to the MAINTAINERS file

# gpg: Signature made Wed 20 Jan 2021 12:56:14 GMT
# gpg:                using RSA key 27B88847EEE0250118F3EAB92ED9D774FE702DB5
# gpg:                issuer "thuth@redhat.com"
# gpg: Good signature from "Thomas Huth <th.huth@gmx.de>" [full]
# gpg:                 aka "Thomas Huth <thuth@redhat.com>" [full]
# gpg:                 aka "Thomas Huth <huth@tuxfamily.org>" [full]
# gpg:                 aka "Thomas Huth <th.huth@posteo.de>" [unknown]
# Primary key fingerprint: 27B8 8847 EEE0 2501 18F3  EAB9 2ED9 D774 FE70 2DB5

* remotes/huth-gitlab/tags/pull-request-2021-01-20:
  MAINTAINERS: Make status spellings consistent
  MAINTAINERS: Remove Ben Warren
  tests: Fix memory leak in tpm-util.c
  qtest/npcm7xx_pwm-test: Fix memleak in pwm_qom_get
  gitlab-ci: Add alpine to pipeline
  tests/check-block.sh: Refuse to run the iotests with BusyBox' sed
  tests/docker: Add dockerfile for Alpine Linux
  accel/kvm: avoid using predefined PAGE_SIZE
  tests: Rename PAGE_SIZE definitions
  elf2dmp: Rename PAGE_SIZE to ELF2DMP_PAGE_SIZE
  hw/block/nand: Rename PAGE_SIZE to NAND_PAGE_SIZE
  libvhost-user: Include poll.h instead of sys/poll.h
  configure: Add sys/timex.h to probe clock_adjtime
  osdep.h: Remove <sys/signal.h> include

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-01-20 17:44:31 +00:00
Shu-Chun Weng
22db121389 linux-user: add missing IPv6 get/setsockopt option
IPV6_ADDR_PREFERENCES (RFC5014: Source address selection) was not supported.

Signed-off-by: Shu-Chun Weng <scw@google.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20201218193213.3566856-4-scw@google.com>
[PMD: Add missing <linux/in6.h> include for IPV6_ADDR_PREFERENCES]
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-01-20 18:25:42 +01:00
Shu-Chun Weng
fe51b0a597 linux-user: add missing UDP get/setsockopt option
SOL_UDP manipulate options at UDP level. All six options currently defined
in linux source include/uapi/linux/udp.h take integer values.

Signed-off-by: Shu-Chun Weng <scw@google.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20201218193213.3566856-3-scw@google.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-01-20 18:21:03 +01:00
Shu-Chun Weng
2bb963ff6b linux-user: Support F_ADD_SEALS and F_GET_SEALS fcntls
Also reorder blocks so that they are all in the same order everywhere.

Signed-off-by: Shu-Chun Weng <scw@google.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20201218193213.3566856-2-scw@google.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-01-20 18:21:03 +01:00
John Snow
4251dfb082 MAINTAINERS: Make status spellings consistent
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20201030153416.429791-3-jsnow@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-01-20 10:46:54 +01:00
John Snow
2b42989c04 MAINTAINERS: Remove Ben Warren
Ben's email bounces and he no longer works for Skyport Systems. I was
unable to reach Ben, so mark this section as Orphaned for now.

Signed-off-by: John Snow <jsnow@redhat.com>
Message-Id: <20201030153416.429791-2-jsnow@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-01-20 10:46:54 +01:00
Stefan Berger
f8e3df09d2 tests: Fix memory leak in tpm-util.c
This patch fixes the following memory leak detected by asan:

Indirect leak of 560320 byte(s) in 136 object(s) allocated from:
    #0 0x556b3b3f9b57 in calloc (/home/stefanb/tmp/qemu-tip/build/tests/qtest/tpm-crb-swtpm-test+0x23fb57)
    #1 0x152b0e96b9b0 in g_malloc0 (/lib64/libglib-2.0.so.0+0x589b0)
    #2 0x556b3b588f61 in parse_object /home/stefanb/tmp/qemu-tip/build/../qobject/json-parser.c:318:12
    #3 0x556b3b588f61 in parse_value /home/stefanb/tmp/qemu-tip/build/../qobject/json-parser.c:546:16
    #4 0x556b3b5886e8 in json_parser_parse /home/stefanb/tmp/qemu-tip/build/../qobject/json-parser.c:580:14
    #5 0x556b3b52ff4a in json_message_process_token /home/stefanb/tmp/qemu-tip/build/../qobject/json-streamer.c:92:12
    #6 0x556b3b59896f in json_lexer_feed_char /home/stefanb/tmp/qemu-tip/build/../qobject/json-lexer.c:313:13
    #7 0x556b3b598443 in json_lexer_feed /home/stefanb/tmp/qemu-tip/build/../qobject/json-lexer.c:350:9
    #8 0x556b3b436c70 in qmp_fd_receive /home/stefanb/tmp/qemu-tip/build/../tests/qtest/libqtest.c:614:9
    #9 0x556b3b435871 in qtest_qmp_receive_dict /home/stefanb/tmp/qemu-tip/build/../tests/qtest/libqtest.c:636:12
    #10 0x556b3b435871 in qtest_qmp_receive /home/stefanb/tmp/qemu-tip/build/../tests/qtest/libqtest.c:624:27
    #11 0x556b3b435c59 in qtest_vqmp /home/stefanb/tmp/qemu-tip/build/../tests/qtest/libqtest.c:715:12
    #12 0x556b3b435c59 in qtest_qmp /home/stefanb/tmp/qemu-tip/build/../tests/qtest/libqtest.c:756:16
    #13 0x556b3b4328c7 in tpm_util_wait_for_migration_complete /home/stefanb/tmp/qemu-tip/build/../tests/qtest/tpm-util.c:245:15
    #14 0x556b3b4333be in tpm_test_swtpm_migration_test /home/stefanb/tmp/qemu-tip/build/../tests/qtest/tpm-tests.c:117:5
    #15 0x152b0e98e29d  (/lib64/libglib-2.0.so.0+0x7b29d)

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Cc: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210115204637.3332555-1-stefanb@linux.vnet.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-01-20 10:46:54 +01:00
Gan Qixin
3e829c0468 qtest/npcm7xx_pwm-test: Fix memleak in pwm_qom_get
The pwm_qom_get function didn't free "response", which caused an indirect
memory leak. So use qobject_unref() to fix it.

ASAN shows memory leak stack:

Indirect leak of 74160000 byte(s) in 18000 object(s) allocated from:
    #0 0x7f96e2f79d4e in __interceptor_calloc (/lib64/libasan.so.5+0x112d4e)
    #1 0x7f96e2d98a50 in g_malloc0 (/lib64/libglib-2.0.so.0+0x55a50)
    #2 0x556313112180 in qdict_new ../qobject/qdict.c:30
    #3 0x556313115bca in parse_object ../qobject/json-parser.c:318
    #4 0x556313117810 in parse_value ../qobject/json-parser.c:546
    #5 0x556313117bda in json_parser_parse ../qobject/json-parser.c:580
    #6 0x55631310fe67 in json_message_process_token ../qobject/json-streamer.c:92
    #7 0x5563131210b7 in json_lexer_feed_char ../qobject/json-lexer.c:313
    #8 0x556313121662 in json_lexer_feed ../qobject/json-lexer.c:350
    #9 0x5563131101e9 in json_message_parser_feed ../qobject/json-streamer.c:121
    #10 0x5563130cb81e in qmp_fd_receive ../tests/qtest/libqtest.c:614
    #11 0x5563130cba2b in qtest_qmp_receive_dict ../tests/qtest/libqtest.c:636
    #12 0x5563130cb939 in qtest_qmp_receive ../tests/qtest/libqtest.c:624
    #13 0x5563130cbe0d in qtest_vqmp ../tests/qtest/libqtest.c:715
    #14 0x5563130cc40f in qtest_qmp ../tests/qtest/libqtest.c:756
    #15 0x5563130c5623 in pwm_qom_get ../tests/qtest/npcm7xx_pwm-test.c:180
    #16 0x5563130c595e in pwm_get_duty ../tests/qtest/npcm7xx_pwm-test.c:210
    #17 0x5563130c7529 in test_toggle ../tests/qtest/npcm7xx_pwm-test.c:447

Reported-by: Euler Robot <euler.robot@huawei.com>
Message-Id: <20210115075634.717909-1-ganqixin@huawei.com>
Signed-off-by: Gan Qixin <ganqixin@huawei.com>
Reviewed-by: Havard Skinnemoen <hskinnemoen@google.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Hao Wu <wuhaotsh@google.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-01-20 10:46:54 +01:00
Jiaxun Yang
b22786eab0 gitlab-ci: Add alpine to pipeline
[thuth: Enable "make check" tests, too, after tests/check-block.sh got fixed]

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Message-Id: <20210118063808.12471-10-jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-01-20 10:46:54 +01:00
Thomas Huth
872cda9c5e tests/check-block.sh: Refuse to run the iotests with BusyBox' sed
BusyBox' sed reports itself as "This is not GNU sed version 4.0"
when being run with the --version parameter. However, the iotests
really need GNU sed, they do not work with the BusyBox version.
So let's make sure that we really have GNU sed and refuse to run
the tests with BusyBox' sed.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20210119134749.401311-1-thuth@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-01-20 10:46:54 +01:00
Jiaxun Yang
8df04b04ed tests/docker: Add dockerfile for Alpine Linux
Alpine Linux[1] is a security-oriented, lightweight Linux distribution
based on musl libc and busybox.

It it popular among Docker guests and embedded applications.

Adding it to test against different libc.

[1]: https://alpinelinux.org/

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Message-Id: <20210118063808.12471-9-jiaxun.yang@flygoat.com>
[thuth: Dropped some unnecessary packages, replaced build-base with its deps]
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-01-20 10:46:54 +01:00
Jiaxun Yang
eb8b1a797a accel/kvm: avoid using predefined PAGE_SIZE
As per POSIX specification of limits.h [1], OS libc may define
PAGE_SIZE in limits.h.

PAGE_SIZE is used in included kernel uapi headers.

To prevent collosion of definition, we discard PAGE_SIZE from
defined by libc and take QEMU's variable.

[1]: https://pubs.opengroup.org/onlinepubs/7908799/xsh/limits.h.html

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Message-Id: <20210118063808.12471-8-jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-01-20 10:46:54 +01:00
Jiaxun Yang
d2c4f3841d tests: Rename PAGE_SIZE definitions
As per POSIX specification of limits.h [1], OS libc may define
PAGE_SIZE in limits.h.

Self defined PAGE_SIZE is frequently used in tests, to prevent
collosion of definition, we give PAGE_SIZE definitons reasonable
prefixs.

[1]: https://pubs.opengroup.org/onlinepubs/7908799/xsh/limits.h.html

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210118063808.12471-7-jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-01-20 10:46:54 +01:00
Jiaxun Yang
2d0fc797fa elf2dmp: Rename PAGE_SIZE to ELF2DMP_PAGE_SIZE
As per POSIX specification of limits.h [1], OS libc may define
PAGE_SIZE in limits.h.

To prevent collosion of definition, we rename PAGE_SIZE here.

[1]: https://pubs.opengroup.org/onlinepubs/7908799/xsh/limits.h.html

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210118063808.12471-6-jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-01-20 10:46:54 +01:00
Jiaxun Yang
9c57272507 hw/block/nand: Rename PAGE_SIZE to NAND_PAGE_SIZE
As per POSIX specification of limits.h [1], OS libc may define
PAGE_SIZE in limits.h.

To prevent collosion of definition, we rename PAGE_SIZE here.

[1]: https://pubs.opengroup.org/onlinepubs/7908799/xsh/limits.h.html

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20210118063808.12471-5-jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-01-20 10:46:54 +01:00
Jiaxun Yang
29ce0d35e1 libvhost-user: Include poll.h instead of sys/poll.h
Musl libc complains about it's wrong usage.

In file included from ../subprojects/libvhost-user/libvhost-user.h:20,
                 from ../subprojects/libvhost-user/libvhost-user-glib.h:19,
                 from ../subprojects/libvhost-user/libvhost-user-glib.c:15:
/usr/include/sys/poll.h:1:2: error: #warning redirecting incorrect #include <sys/poll.h> to <poll.h> [-Werror=cpp]
    1 | #warning redirecting incorrect #include <sys/poll.h> to <poll.h>
      |  ^~~~~~~

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210118063808.12471-3-jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-01-20 10:42:03 +01:00
Jiaxun Yang
cd5d20efa9 configure: Add sys/timex.h to probe clock_adjtime
It is not a part of standard time.h. Glibc put it under
time.h however musl treat it as a sys timex extension.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20210118063808.12471-2-jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-01-20 10:42:03 +01:00
Michael Forney
c0cb758eec osdep.h: Remove <sys/signal.h> include
Prior to 2a4b472c3c, sys/signal.h was only included on OpenBSD
(apart from two .c files). The POSIX standard location for this
header is just <signal.h> and in fact, OpenBSD's signal.h includes
sys/signal.h itself.

Unconditionally including <sys/signal.h> on musl causes warnings
for just about every source file:

  /usr/include/sys/signal.h:1:2: warning: #warning redirecting incorrect #include <sys/signal.h> to <signal.h> [-Wcpp]
      1 | #warning redirecting incorrect #include <sys/signal.h> to <signal.h>
        |  ^~~~~~~

Since there don't seem to be any platforms which require including
<sys/signal.h> in addition to <signal.h>, and some platforms like
Haiku lack it completely, just remove it.

Tested building on OpenBSD after removing this include.

Signed-off-by: Michael Forney <mforney@mforney.org>
Tested-by: John Snow <jsnow@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20210113215600.16100-1-mforney@mforney.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-01-20 10:42:03 +01:00
Peter Maydell
48202c7124 target-arm queue:
* Implement IMPDEF pauth algorithm
  * Support ARMv8.4-SEL2
  * Fix bug where we were truncating predicate vector lengths in SVE insns
  * npcm7xx_adc-test: Fix memleak in adc_qom_set
  * target/arm/m_helper: Silence GCC 10 maybe-uninitialized error
  * docs: Build and install all the docs in a single manual
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Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20210119-1' into staging

target-arm queue:
 * Implement IMPDEF pauth algorithm
 * Support ARMv8.4-SEL2
 * Fix bug where we were truncating predicate vector lengths in SVE insns
 * npcm7xx_adc-test: Fix memleak in adc_qom_set
 * target/arm/m_helper: Silence GCC 10 maybe-uninitialized error
 * docs: Build and install all the docs in a single manual

# gpg: Signature made Tue 19 Jan 2021 15:46:34 GMT
# gpg:                using RSA key E1A5C593CD419DE28E8315CF3C2525ED14360CDE
# gpg:                issuer "peter.maydell@linaro.org"
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [ultimate]
# gpg:                 aka "Peter Maydell <pmaydell@gmail.com>" [ultimate]
# gpg:                 aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [ultimate]
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83  15CF 3C25 25ED 1436 0CDE

* remotes/pmaydell/tags/pull-target-arm-20210119-1: (29 commits)
  docs: Build and install all the docs in a single manual
  target/arm/m_helper: Silence GCC 10 maybe-uninitialized error
  npcm7xx_adc-test: Fix memleak in adc_qom_set
  target/arm: Update REV, PUNPK for pred_desc
  target/arm: Update ZIP, UZP, TRN for pred_desc
  target/arm: Update PFIRST, PNEXT for pred_desc
  target/arm: Introduce PREDDESC field definitions
  target/arm: refactor vae1_tlbmask()
  target/arm: enable Secure EL2 in max CPU
  target/arm: Implement SCR_EL2.EEL2
  target/arm: revector to run-time pick target EL
  target/arm: set HPFAR_EL2.NS on secure stage 2 faults
  target/arm: secure stage 2 translation regime
  target/arm: generalize 2-stage page-walk condition
  target/arm: translate NS bit in page-walks
  target/arm: do S1_ptw_translate() before address space lookup
  target/arm: handle VMID change in secure state
  target/arm: add ARMv8.4-SEL2 system registers
  target/arm: add MMU stage 1 for Secure EL2
  target/arm: add 64-bit S-EL2 to EL exception table
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-01-19 15:47:23 +00:00
Peter Maydell
b93f4fbdc4 docs: Build and install all the docs in a single manual
When we first converted our documentation to Sphinx, we split it into
multiple manuals (system, interop, tools, etc), which are all built
separately.  The primary driver for this was wanting to be able to
avoid shipping the 'devel' manual to end-users.  However, this is
working against the grain of the way Sphinx wants to be used and
causes some annoyances:
 * Cross-references between documents become much harder or
   possibly impossible
 * There is no single index to the whole documentation
 * Within one manual there's no links or table-of-contents info
   that lets you easily navigate to the others
 * The devel manual doesn't get published on the QEMU website
   (it would be nice to able to refer to it there)

Merely hiding our developer documentation from end users seems like
it's not enough benefit for these costs.  Combine all the
documentation into a single manual (the same way that the readthedocs
site builds it) and install the whole thing.  The previous manual
divisions remain as the new top level sections in the manual.

 * The per-manual conf.py files are no longer needed
 * The man_pages[] specifications previously in each per-manual
   conf.py move to the top level conf.py
 * docs/meson.build logic is simplified as we now only need to run
   Sphinx once for the HTML and then once for the manpages5B
 * The old index.html.in that produced the top-level page with
   links to each manual is no longer needed

Unfortunately this means that we now have to build the HTML
documentation into docs/manual in the build tree rather than directly
into docs/; otherwise it is too awkward to ensure we install only the
built manual and not also the dependency info, stamp file, etc.  The
manual still ends up in the same place in the final installed
directory, but anybody who was consulting documentation from within
the build tree will have to adjust where they're looking.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 20210115154449.4801-1-peter.maydell@linaro.org
2021-01-19 15:45:14 +00:00
Philippe Mathieu-Daudé
0ae4f11ee5 target/arm/m_helper: Silence GCC 10 maybe-uninitialized error
When building with GCC 10.2 configured with --extra-cflags=-Os, we get:

  target/arm/m_helper.c: In function ‘arm_v7m_cpu_do_interrupt’:
  target/arm/m_helper.c:1811:16: error: ‘restore_s16_s31’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
   1811 |             if (restore_s16_s31) {
        |                ^
  target/arm/m_helper.c:1350:10: note: ‘restore_s16_s31’ was declared here
   1350 |     bool restore_s16_s31;
        |          ^~~~~~~~~~~~~~~
  cc1: all warnings being treated as errors

Initialize the 'restore_s16_s31' variable to silence the warning.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20210119062739.589049-1-f4bug@amsat.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-01-19 15:45:14 +00:00