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As of Nov 2024 [1], we have a new topical mailing list for Rust
related patches. Add a new MAINTAINERS entry to touch all files under
rust/ subdirectory and additionally add it to previous rust related
entries.
[1] https://lore.kernel.org/qemu-devel/CAFEAcA-ZQuyGTtG-vhRTEwpz0L4cpimNxkKix45Yw6gVHXozRQ@mail.gmail.com
Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Message-Id: <20241109-update-maintainers-file-rust-v1-1-f4daba6f782f@linaro.org>
[AJB: tweak commit msg]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
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GDB 15 does not like exit() anymore:
(gdb) python exit(0)
Python Exception <class 'SystemExit'>: 0
Error occurred in Python: 0
Use the GDB's own exit command, like it's already done in a couple
places, everywhere. This is the same fix as commit 93a3048dcf45
("tests: Gently exit from GDB when tests complete"), but applied to
more places.
Acked-by: Gustavo Romero <gustavo.romero@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20241022113939.19989-1-iii@linux.ibm.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
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NBD patches for 2024-11-18
- Eric Blake: Silence qemu-nbd on harmless client port probes
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# gpg: Signature made Mon 18 Nov 2024 19:31:25 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
* tag 'pull-nbd-2024-11-18' of https://repo.or.cz/qemu/ericb:
nbd-server: Silence server warnings on port probes
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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While testing the use of qemu-nbd in a Pod of a Kubernetes cluster, I
got LOTS of log messages of the forms:
qemu-nbd: option negotiation failed: Failed to read flags: Unexpected end-of-file before all data were read
qemu-nbd: option negotiation failed: Failed to read flags: Unable to read from socket: Connection reset by peer
While it is nice to warn about clients that aren't following protocol
(in case it helps diagnosing bugs in those clients), a mere port probe
(where the client never write()s any bytes, and where we might even
hit EPIPE in trying to send our greeting to the client) is NOT
abnormal, but merely serves to pollute the log. And Kubernetes
_really_ likes to do port probes to determine whether a given Pod is
up and running.
Easy ways to demonstrate the above port probes:
$ qemu-nbd -r -f raw path/to/file &
$ nc localhost 10809 </dev/null
$ bash -c 'exec </dev/tcp/localhost/10809'
$ kill $!
Silence the noise by not capturing errors until after our first
successful read() from a client.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-ID: <20241115195638.1132007-2-eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
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staging
* Fixes & doc updates for the new "boot order" s390x bios feature
* Provide a "loadparm" property for scsi-hd & scsi-cd devices on s390x
(required for the "boot order" feature)
* Fix the floating-point multiply-and-add NaN rules on s390x
* Raise timeout on cross-accel build jobs to 60m
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# gpg: Signature made Mon 18 Nov 2024 17:34:47 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
* tag 'pull-request-2024-11-18' of https://gitlab.com/thuth/qemu:
.gitlab-ci.d: Raise timeout on cross-accel build jobs to 60m
pc-bios: Update the s390 bios images with the recent fixes
pc-bios/s390-ccw: Re-initialize receive queue index before each boot attempt
pc-bios/s390x: Initialize machine loadparm before probing IPL devices
pc-bios/s390x: Initialize cdrom type to false for each IPL device
hw: Add "loadparm" property to scsi disk devices for booting on s390x
hw/s390x: Restrict "loadparm" property to devices that can be used for booting
docs/system/bootindex: Make it clear that s390x can also boot from virtio-net
docs/system/s390x/bootdevices: Update loadparm documentation
tests/tcg/s390x: Add the floating-point multiply-and-add test
target/s390x: Fix the floating-point multiply-and-add NaN rules
hw/usb: Use __attribute__((packed)) vs __packed
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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The current 30 minute timeout on the cross_accel_build_job template
is a bit low: sometimes if the k8s runners are running slow the
can hit it, for example this cross-arm64-xen-only job hit the
30 minute timeout while still not quite finished with the compile:
https://gitlab.com/qemu-project/qemu/-/jobs/8401277985
This is partly a "runner performance can be unpredictable" issue:
https://gitlab.com/qemu-project/qemu/-/jobs/8391726482
is the same job from just a day earlier and it finished in
16 minutes. But we already have build jobs that are higher
timeouts than 30 minutes, so we have headroom to raise the
timeout here to something we're less likely to hit on a slow
runner.
Bump the cross_accel_build_job timeout to 60 mins.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-ID: <20241118153226.1524542-1-peter.maydell@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
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Add the fixes from the previous three commits to the binary, too.
Signed-off-by: Thomas Huth <thuth@redhat.com>
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Now that we can boot from multiple boot devices, we have to make sure
to reinitialize static variables like rx_last_idx to avoid that they
contain garbage data during the second boot attempt (which can lead to
crashes when the code tries to access the wrong ring data).
Message-ID: <20241111131120.317796-1-thuth@redhat.com>
Reviewed-by: Jared Rossi <jrossi@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
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Commit bb185de423 ("s390x: Add individual loadparm assignment to
CCW device") allowed boot devices to be assigned a loadparm value independent
of the machine value, however, when no boot devices are defined, the machine
loadparm becomes ignored. Therefore, let's check the machine loadparm
prior to probing the devices.
Signed-off-by: Jared Rossi <jrossi@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20241114161952.3508554-1-jrossi@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
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Clear information about cdrom type so that current IPL device isn't tainted
by stale data from previous devices.
Signed-off-by: Jared Rossi <jrossi@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20241108194136.2833932-1-jrossi@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
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While adding the new flexible boot order feature on s390x recently,
we missed to add the "loadparm" property to the scsi-hd and scsi-cd
devices. This property is required on s390x to pass the information
to the boot loader about which kernel should be started or whether
the boot menu should be shown. But even more serious: The missing
property is now causing trouble with the corresponding libvirt patches
that assume that the "loadparm" property is either settable for all
bootable devices (when the "boot order" feature is implemented in
QEMU), or none (meaning the behaviour of older QEMUs that only allowed
one "loadparm" at the machine level). To fix this broken situation,
let's implement the "loadparm" property in for the SCSI devices, too.
Message-ID: <20241115141202.1877294-1-thuth@redhat.com>
Acked-by: Eric Farman <farman@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
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Commit bb185de423 ("s390x: Add individual loadparm assignment to
CCW device") added a "loadparm" property to all CCW devices. This
was a little bit unfortunate, since this property is only useful
for devices that can be used for booting, but certainly it is not
useful for devices like virtio-gpu or virtio-tablet.
Thus let's restrict the property to CCW devices that we can boot from
(i.e. virtio-block, virtio-net and vfio-ccw devices).
Message-ID: <20241113114741.681096-1-thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Jared Rossi <jrossi@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
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Let's make it clear that s390x can also boot from virtio-net, to avoid
that people think that s390x can only boot from disk devices.
Reported-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Message-ID: <20241111105506.264640-1-thuth@redhat.com>
Reviewed-by: Prasad Pandit <pjp@fedoraproject.org>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
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Update documentation to include per-device loadparm support.
Signed-off-by: Jared Rossi <jrossi@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20241115002742.3576842-1-jrossi@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
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Add a test to prevent regressions.
Share some useful pieces with the vfminmax test.
Remove the duplicates from the floating point class values.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-ID: <20241023000147.34035-3-iii@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
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Order the helper arguments to match the Principles of Operation.
Implement the "Results: MULTIPLY AND ADD" table in pickNaNMulAdd().
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-ID: <20241023000147.34035-2-iii@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
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__packed is non standard and is not present in clang-cl.
__attribute__((packed)) has the same semantics.
Signed-off-by: Erwin Jansen <jansene@google.com>
Signed-off-by: Roque Arcudia Hernandez <roqueh@google.com>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20241101211720.3354111-1-roqueh@google.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
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* target/i386: fix compilation without CONFIG_HYPERV
* configure: improve check for execution in the source directory
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# gpg: Signature made Mon 18 Nov 2024 12:45:36 GMT
# gpg: using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg: issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" [full]
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1
# Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83
* tag 'for-upstream' of https://gitlab.com/bonzini/qemu:
configure: Use -ef to compare paths
target/i386: hyperv: add stub for hyperv_syndbg_query_options
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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configure checks if it is executed in the source directory by comparing
the literal paths, but there may be multiple representations of a
directory due to symbolic links. Use the -ef operator to tell if they
point to the same directory.
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Link: https://lore.kernel.org/r/20241111-p-v1-1-001006c68b7e@daynix.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Building without CONFIG_HYPERV is currently broken due to a missing
symbol 'hyperv_syndbg_query_options'. Add it to the stubs
that exist for that very reasons.
Reported-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Misc HW fixes
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# =zdCl
# -----END PGP SIGNATURE-----
# gpg: Signature made Mon 18 Nov 2024 12:46:04 GMT
# gpg: using RSA key FAABE75E12917221DCFD6BB2E3E32C2CDEADC0DE
# gpg: Good signature from "Philippe Mathieu-Daudé (F4BUG) <f4bug@amsat.org>" [full]
# Primary key fingerprint: FAAB E75E 1291 7221 DCFD 6BB2 E3E3 2C2C DEAD C0DE
* tag 'hw-misc-20241118' of https://github.com/philmd/qemu:
hw/watchdog/cmsdk_apb_watchdog: Fix broken link
net: mark struct ip_header as QEMU_PACKED
hw/net/virtio-net.c: Don't assume IP length field is aligned
hw/audio/hda: fix memory leak on audio setup
Revert "hw/audio/hda: fix memory leak on audio setup"
hw/misc/mos6522: Fix bad class definition of the MOS6522 device
hw/sd/sdhci: Fix coding style
tests/qtest/migration: Fix indentations
usb-hub: Fix handling port power control messages
MAINTAINERS: Update my email address for COLO
hw/display: check frame buffer can hold blob
hw/display: factor out the scanout blob to fb conversion
hw/i386/elfboot: allocate "header" in heap
hw/misc/nrf51_rng: Don't use BIT_MASK() when we mean BIT()
vl: fix qemu_validate_options() indention
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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The patch changes the comments to point to the latest Design Kit
Technical Reference Manual.
Signed-off-by: Roque Arcudia Hernandez <roqueh@google.com>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20241115160328.1650269-2-roqueh@google.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
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The ip_header is not actually guaranteed to be aligned. We attempt to
deal with this in some places such as net_checksum_calculate() by
using stw_be_p and so on to access the fields, but this is not
sufficient to be correct, because even accessing a byte member
within an unaligned struct is undefined behaviour. The clang
sanitizer will emit warnings like these if net_checksum_calculate()
is called:
Stopping network: ../../net/checksum.c:106:9: runtime error: member access within misaligned address 0x556aad9b502e for type 'struct ip_header', which requires 4 byte alignment
0x556aad9b502e: note: pointer points here
34 56 08 00 45 00 01 48 a5 09 40 00 40 11 7c 8b 0a 00 02 0f 0a 00 02 02 00 44 00 43 01 34 19 56
^
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior ../../net/checksum.c:106:9 in
../../net/checksum.c:106:9: runtime error: load of misaligned address 0x556aad9b502e for type 'uint8_t' (aka 'unsigned char'), which requires 4 byte alignment
0x556aad9b502e: note: pointer points here
34 56 08 00 45 00 01 48 a5 09 40 00 40 11 7c 8b 0a 00 02 0f 0a 00 02 02 00 44 00 43 01 34 19 56
^
Fix this by marking the ip_header struct as QEMU_PACKED, so that
the compiler knows that it might be unaligned and will generate
the right code for accessing fields.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20241114141619.806652-3-peter.maydell@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
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In virtio-net.c we assume that the IP length field in the packet is
aligned, and we copy its address into a uint16_t* in the
VirtioNetRscUnit struct which we then dereference later. This isn't
a safe assumption; it will also result in compilation failures if we
mark the ip_header struct as QEMU_PACKED because the compiler will
not let you take the address of an unaligned struct field.
Make the ip_plen field in VirtioNetRscUnit a void*, and make all the
places where we read or write through that pointer instead use some
new accessor functions read_unit_ip_len() and write_unit_ip_len()
which account for the pointer being potentially unaligned and also do
the network-byte-order conversion we were previously using htons() to
perform.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20241114141619.806652-2-peter.maydell@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
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When SET_STREAM_FORMAT is called, the st->buft timer is overwritten, thus
causing a memory leak. This was originally fixed in commit 816139ae6a5
("hw/audio/hda: fix memory leak on audio setup", 2024-11-14) but that
caused the audio to break in SPICE.
Fortunately, a simpler fix is possible. The timer only needs to be
reset, because the callback is always the same (st->output is set at
realize time in hda_audio_init); call to timer_new_ns overkill. Replace
it with timer_del and only initialize the timer once; for simplicity,
do it even if use_timer is false.
An even simpler fix would be to free the old time in hda_audio_setup().
However, it seems better to place the initialization of the timer close
to that of st->ouput.
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Message-ID: <20241114125318.1707590-3-pbonzini@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
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This reverts commit 6d03242a7e47815ed56687ecd13f683d8da3f2fe,
which causes SPICE audio to break. While arguably this is a SPICE bug,
it is possible to fix the leak in a less heavy-handed way.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2639
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Message-ID: <20241114125318.1707590-2-pbonzini@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
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When compiling QEMU with --enable-cfi, the "q800" m68k machine
currently crashes very early, when the q800_machine_init() function
tries to wire the interrupts of the "via1" device.
This happens because TYPE_MOS6522_Q800_VIA1 is supposed to be a
proper SysBus device, but its parent (TYPE_MOS6522) has a mistake
in its class definition where it is only derived from DeviceClass,
and not from SysBusDeviceClass, so we end up in funny memory access
issues here. Using the right class hierarchy for the MOS6522 device
fixes the problem.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2675
Signed-off-by: Thomas Huth <thuth@redhat.com>
Fixes: 51f233ec92 ("misc: introduce new mos6522 VIA device")
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-ID: <20241114104653.963812-1-thuth@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
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Fix coding style issues from checkpatch.pl
Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Message-ID: <20241114094839.4128404-2-jamin_lin@aspeedtech.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
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Select all the code and hit tab. I'll be moving functions around quite
a lot in the next patches, so make sure all indentation is correct
now.
Add parentheses around some expressions to preserve readability.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Fabiano Rosas <farosas@suse.de>
Message-ID: <20241113194630.3385-2-farosas@suse.de>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
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The ClearPortFeature control message fails for PORT_POWER because there
is no break; at the end of the case statement, causing it to fall through
to the failure handler. Add the missing break; to solve the problem.
Fixes: 1cc403eb21 ("usb-hub: emulate per port power switching")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20241112170152.217664-11-linux@roeck-us.net>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
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Signed-off-by: Zhang Chen <chen.zhang@intel.com>
Reviewed-by: Li Zhijian <lizhijian@fujitsu.com>
Message-ID: <20241112084038.6352-1-chen.zhang@intel.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
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Coverity reports (CID 1564769, 1564770) that we potentially overflow
by doing some 32x32 multiplies for something that ends up in a 64 bit
value. Fix this by first using stride for all lines and casting input
to uint64_t to ensure a 64 bit multiply is used.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Cc: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Reviewed-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Tested-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Message-ID: <20241111230040.68470-3-alex.bennee@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
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There are two identical sequences of a code doing the same thing that
raise warnings with Coverity. Before fixing those issues lets factor
out the common code into a helper function we can share.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Cc: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Reviewed-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Tested-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Message-ID: <20241111230040.68470-2-alex.bennee@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
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In x86_load_linux(), we were using a stack-allocated array as data for
fw_cfg_add_bytes(). Since the latter just takes a reference to the
pointer instead of copying the data, it can happen that the contents
have been overridden by the time the guest attempts to access them.
Instead of using the stack-allocated array, allocate some memory from
the heap, copy the contents of the array, and use it for fw_cfg.
Signed-off-by: Sergio Lopez <slp@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20241109053748.13183-1-slp@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
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The BIT_MASK() macro from bitops.h provides the mask of a bit
within a particular word of a multi-word bit array; it is intended
to be used with its counterpart BIT_WORD() that gives the index
of the word in the array.
In nrf51_rng we are using it for cases where we have a bit number
that we know is the index of a bit within a single word (in fact, it
happens that all the bit numbers we pass to it are zero). This
happens to give the right answer, but the macro that actually
does the job we want here is BIT().
Use BIT() instead of BIT_MASK().
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20241108135644.4007151-1-peter.maydell@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20240905141211.1253307-2-kraxel@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
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vfio queue:
* Fixed IGD support
* Fixed QEMU crash when passing through devices in SEV-SNP guests
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# gpg: Signature made Mon 18 Nov 2024 07:56:48 GMT
# gpg: using RSA key A0F66548F04895EBFE6B0B6051A343C7CFFBECA1
# gpg: Good signature from "Cédric Le Goater <clg@redhat.com>" [full]
# gpg: aka "Cédric Le Goater <clg@kaod.org>" [full]
# Primary key fingerprint: A0F6 6548 F048 95EB FE6B 0B60 51A3 43C7 CFFB ECA1
* tag 'pull-vfio-20241118' of https://github.com/legoater/qemu:
vfio/container: Fix container object destruction
vfio/igd: fix calculation of graphics stolen memory
vfio/igd: add pci id for Coffee Lake
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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When commit 96b7af4388b3 intoduced a .instance_finalize() handler,
it did not take into account that the container was not necessarily
inserted into the container list of the address space. Hence, if
the container object is destroyed, by calling object_unref() for
example, before vfio_address_space_insert() is called, QEMU may
crash when removing the container from the list as done in
vfio_container_instance_finalize(). This was seen with an SEV-SNP
guest for which discarding of RAM fails.
To resolve this issue, use the safe version of QLIST_REMOVE().
Cc: Zhenzhong Duan <zhenzhong.duan@intel.com>
Cc: Eric Auger <eric.auger@redhat.com>
Fixes: 96b7af4388b3 ("vfio/container: Move vfio_container_destroy() to an instance_finalize() handler")
Reviewed-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
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When copying the calculation of the stolen memory size for Intels integrated
graphics device of gen 9 and later from the Linux kernel [1], we missed
subtracting 0xf0 from the graphics mode select value for values above 0xf0.
This leads to QEMU reporting a very large size of the graphics stolen memory
area. That's just a waste of memory. Additionally the guest firmware might be
unable to allocate such a large buffer.
[1] https://github.com/torvalds/linux/blob/7c626ce4bae1ac14f60076d00eafe71af30450ba/arch/x86/kernel/early-quirks.c#L455-L460
Signed-off-by: Corvin Köhne <c.koehne@beckhoff.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Fixes: 871922416683 ("vfio/igd: correctly calculate stolen memory size for gen 9 and later")
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
[ clg: Changed commit subject ]
Signed-off-by: Cédric Le Goater <clg@redhat.com>
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I've tested and verified that Coffee Lake devices are working properly.
Signed-off-by: Corvin Köhne <c.koehne@beckhoff.com>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
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cpu: ensure we don't call start_exclusive from cpu_exec
tcg: Allow top bit of SIMD_DATA_BITS to be set in simd_desc()
accel/tcg: Fix user-only probe_access_internal plugin check
linux-user: Fix setreuid and setregid to use direct syscalls
linux-user: Tolerate CONFIG_LSM_MMAP_MIN_ADDR
linux-user: Honor elf alignment when placing images
linux-user/*: Reduce vdso alignment to 4k
linux-user/arm: Select vdso for be8 and be32 modes
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# gpg: Signature made Sat 16 Nov 2024 17:01:51 GMT
# gpg: using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F
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# 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-20241116' of https://gitlab.com/rth7680/qemu:
tcg: Allow top bit of SIMD_DATA_BITS to be set in simd_desc()
linux-user/arm: Select vdso for be8 and be32 modes
linux-user/ppc: Reduce vdso alignment to 4k
linux-user/loongarch64: Reduce vdso alignment to 4k
linux-user/arm: Reduce vdso alignment to 4k
linux-user/aarch64: Reduce vdso alignment to 4k
linux-user: Drop image_info.alignment
linux-user: Honor elf alignment when placing images
cpu: ensure we don't call start_exclusive from cpu_exec
target/i386: fix hang when using slow path for ptw_setl
tests/tcg: Test that sigreturn() does not corrupt the signal mask
linux-user: Tolerate CONFIG_LSM_MMAP_MIN_ADDR
accel/tcg: Fix user-only probe_access_internal plugin check
target/arm: Drop user-only special case in sve_stN_r
linux-user: Fix setreuid and setregid to use direct syscalls
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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In simd_desc() we create a SIMD descriptor from various pieces
including an arbitrary data value from the caller. We try to
sanitize these to make sure everything will fit: the 'data' value
needs to fit in the SIMD_DATA_BITS (== 22) sized field. However we
do that sanitizing with:
tcg_debug_assert(data == sextract32(data, 0, SIMD_DATA_BITS));
This works for the case where the data is supposed to be considered
as a signed integer (which can then be returned via simd_data()).
However, some callers want to treat the data value as unsigned.
Specifically, for the Arm SVE operations, make_svemte_desc()
assembles a data value as a collection of fields, and it needs to use
all 22 bits. Currently if MTE is enabled then its MTEDESC SIZEM1
field may have the most significant bit set, and then it will trip
this assertion.
Loosen the assertion so that we only check that the data value will
fit into the field in some way, either as a signed or as an unsigned
value. This means we will fail to detect some kinds of bug in the
callers, but we won't spuriously assert for intentional use of the
data field as unsigned.
Cc: qemu-stable@nongnu.org
Fixes: db432672dc50e ("tcg: Add generic vector expanders")
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2601
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-ID: <20241115172515.1229393-1-peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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In be8 mode, instructions are little-endian.
In be32 mode, instructions are big-endian.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2333
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Reduce vdso alignment to minimum page size.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Reduce vdso alignment to minimum page size.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Reduce vdso alignment to minimum page size.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Reduce vdso alignment to minimum page size.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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This field is write-only. Use only the function-local
variable within load_elf_image.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Most binaries don't actually depend on more than page alignment,
but any binary can request it. Not honoring this was a bug.
This became obvious when gdb reported
Failed to read a valid object file image from memory
when examining some vdso which are marked as needing more
than page alignment.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20241025175857.2554252-3-pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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