target/i386: Do not re-compute new pc with CF_PCREL
With PCREL, we have a page-relative view of EIP, and an
approximation of PC = EIP+CSBASE that is good enough to
detect page crossings. If we try to recompute PC after
masking EIP, we will mess up that approximation and write
a corrupt value to EIP.
We already handled masking properly for PCREL, so the
fix in b5e0d5d2 was only needed for the !PCREL path.
Cc: qemu-stable@nongnu.org Fixes: b5e0d5d22fbf ("target/i386: Fix 32-bit wrapping of pc/eip computation") Fixes: 5b2fd6cf3735 (b5e0d5d22fbf in 8.1.4) Reported-by: Michael Tokarev <mjt@tls.msk.ru> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20240101230617.129349-1-richard.henderson@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
(cherry picked from commit a58506b748b8988a95f4fa1a2420ac5c17038b30) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Anastasia Belova [Mon, 15 Jan 2024 09:22:16 +0000 (12:22 +0300)]
load_elf: fix iterator's type for elf file processing
j is used while loading an ELF file to byteswap segments'
data. If data is larger than 2GB an overflow may happen.
So j should be elf_word.
This commit fixes a minor bug: it's unlikely anybody is trying to
load ELF files with 2GB+ segments for wrong-endianness targets,
but if they did, it wouldn't work correctly.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Cc: qemu-stable@nongnu.org Fixes: 7ef295ea5b ("loader: Add data swap option to load-elf") Signed-off-by: Anastasia Belova <abelova@astralinux.ru> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
(cherry picked from commit 410c2a4d75f52f6a2fe978eda5a9b6f854afe5ea) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Peter Maydell [Thu, 11 Jan 2024 12:55:43 +0000 (12:55 +0000)]
.gitlab-ci.d/buildtest.yml: Work around htags bug when environment is large
Sometimes the CI "pages" job fails with a message like this from
htags:
$ htags -anT --tree-view=filetree -m qemu_init -t "Welcome to the QEMU sourcecode"
htags: Negative exec line limit = -371
This is due to a bug in hflags where if the environment is too large it
falls over:
https://lists.gnu.org/archive/html/bug-global/2024-01/msg00000.html
This happens to us because GitLab CI puts the commit message of the
commit under test into the CI_COMMIT_MESSAGE and/or CI_COMMIT_TAG_MESSAGE
environment variables, so the job will fail if the commit happens to
have a verbose commit message.
Work around the htags bug by unsetting these variables while running
htags.
Cc: qemu-stable@nongnu.org
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2080 Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20240111125543.1573473-1-peter.maydell@linaro.org> Signed-off-by: Thomas Huth <thuth@redhat.com>
(cherry picked from commit 52a21689cd829c1cc931b59b5ee5bdb10dd578c1) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
An apparent copy-paste error tests for the presence of the
virtio-rng-ccw device in order to perform tests on the virtio-scsi-ccw
device.
Signed-off-by: Samuel Tardieu <sam@rfc1149.net>
Message-ID: <20240106130121.1244993-1-sam@rfc1149.net> Fixes: 65331bf5d1 ("tests/qtest: Check for virtio-ccw devices before using them") Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Thomas Huth <thuth@redhat.com>
(cherry picked from commit c98873ee4a0c2694aac976ab9affcf55da8b7e61) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Natanael Copa [Tue, 19 Dec 2023 10:51:29 +0000 (11:51 +0100)]
util: fix build with musl libc on ppc64le
Use PPC_FEATURE2_ISEL and PPC_FEATURE2_VEC_CRYPTO from linux headers
instead of the GNU specific PPC_FEATURE2_HAS_ISEL and
PPC_FEATURE2_HAS_VEC_CRYPTO. This fixes build with musl libc.
Cc: qemu-stable@nongnu.org
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1861 Signed-off-by: Natanael Copa <ncopa@alpinelinux.org> Fixes: 63922f467a ("tcg/ppc: Replace HAVE_ISEL macro with a variable") Fixes: 68f340d4cd ("tcg/ppc: Enable Altivec detection")
Message-Id: <20231219105236.7059-1-ncopa@alpinelinux.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
(cherry picked from commit 1d513e06d96697f44de4a1b85c6ff627c443e306) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Peter Maydell [Tue, 9 Jan 2024 14:43:44 +0000 (14:43 +0000)]
hw/intc/arm_gicv3_cpuif: handle LPIs in in the list registers
The hypervisor can deliver (virtual) LPIs to a guest by setting up a
list register to have an intid which is an LPI. The GIC has to treat
these a little differently to standard interrupt IDs, because LPIs
have no Active state, and so the guest will only EOI them, it will
not also deactivate them. So icv_eoir_write() must do two things:
* if the LPI ID is not in any list register, we drop the
priority but do not increment the EOI count
* if the LPI ID is in a list register, we immediately deactivate
it, regardless of the split-drop-and-deactivate control
This can be seen in the VirtualWriteEOIR0() and VirtualWriteEOIR1()
pseudocode in the GICv3 architecture specification.
Without this fix, potentially a hypervisor guest might stall because
LPIs get stuck in a bogus Active+Pending state.
Cc: qemu-stable@nongnu.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Tested-by: Miguel Luis <miguel.luis@oracle.com>
(cherry picked from commit 82a65e3188abebb509510b391726711606aca642) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
The mcycle/minstret counter's stop flag is mistakenly updated on a copy
on stack. Thus the counter increments even when the CY/IR bit in the
mcountinhibit register is set. This commit corrects its behavior.
Fixes: 3780e33732f88 (target/riscv: Support mcycle/minstret write operation) Signed-off-by: Xu Lu <luxu.kernel@bytedance.com> Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
(cherry picked from commit 5cb0e7abe1635cb82e0033260dac2b910d142f8c) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Pavel Pisa [Wed, 3 Jan 2024 23:14:26 +0000 (00:14 +0100)]
hw/net/can/sja1000: fix bug for single acceptance filter and standard frame
A CAN sja1000 standard frame filter mask has been computed and applied
incorrectly for standard frames when single Acceptance Filter Mode
(MOD_AFM = 1) has been selected. The problem has not been found
by Linux kernel testing because it uses dual filter mode (MOD_AFM = 0)
and leaves falters fully open.
The problem has been noticed by Grant Ramsay when testing with Zephyr
RTOS which uses single filter mode.
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz> Reported-by: Grant Ramsay <gramsay@enphaseenergy.com>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2028 Fixes: 733210e754 ("hw/net/can: SJA1000 chip register level emulation")
Message-ID: <20240103231426.5685-1-pisa@fel.cvut.cz>
(cherry picked from commit 25145a7d7735344a469551946fc2a7f19eb4aa3d) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Kevin Wolf [Fri, 1 Dec 2023 14:25:20 +0000 (15:25 +0100)]
iotests: Basic tests for internal snapshots
We have a few test cases that include tests for corner case aspects of
internal snapshots, but nothing that tests that they actually function
as snapshots or that involves deleting a snapshot. Add a test for this
kind of basic internal snapshot functionality.
The error cases include a regression test for the crash we just fixed
with snapshot operations on inactive images.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20231201142520.32255-4-kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit bb6e2511eb48539b7dcbcb5f47772e156b9c45d1) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Kevin Wolf [Fri, 1 Dec 2023 14:25:19 +0000 (15:25 +0100)]
vl: Improve error message for conflicting -incoming and -loadvm
Currently, the conflict between -incoming and -loadvm is only detected
when loading the snapshot fails because the image is still inactive for
the incoming migration. This results in a suboptimal error message:
$ ./qemu-system-x86_64 -hda /tmp/test.qcow2 -loadvm foo -incoming defer
qemu-system-x86_64: Device 'ide0-hd0' is writable but does not support snapshots
Catch the situation already in qemu_validate_options() to improve the
message:
$ ./qemu-system-x86_64 -hda /tmp/test.qcow2 -loadvm foo -incoming defer
qemu-system-x86_64: 'incoming' and 'loadvm' options are mutually exclusive
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20231201142520.32255-3-kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit 5a7f21efaf99c60614fe1967be1c0f9aa46c526e) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Kevin Wolf [Fri, 1 Dec 2023 14:25:18 +0000 (15:25 +0100)]
block: Fix crash when loading snapshot on inactive node
bdrv_is_read_only() only checks if the node is configured to be
read-only eventually, but even if it returns false, writing to the node
may not be permitted at the moment (because it's inactive).
bdrv_is_writable() checks that the node can be written to right now, and
this is what the snapshot operations really need.
Change bdrv_can_snapshot() to use bdrv_is_writable() to fix crashes like
the following:
The resulting error message after this patch isn't perfect yet, but at
least it doesn't crash any more:
$ ./qemu-system-x86_64 -hda /tmp/test.qcow2 -loadvm foo -incoming defer
qemu-system-x86_64: Device 'ide0-hd0' is writable but does not support snapshots
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20231201142520.32255-2-kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit d3007d348adaaf04ee8b099a475282034a662414) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
target/arm/helper: Propagate MDCR_EL2.HPMN into PMCR_EL0.N
MDCR_EL2.HPMN allows an hypervisor to limit the number of PMU counters
available to EL1 and EL0 (to keep the others to itself). QEMU already
implements this split correctly, except for PMCR_EL0.N reads: the number
of counters read by EL1 or EL0 should be the one configured in
MDCR_EL2.HPMN.
Cc: qemu-stable@nongnu.org Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Message-id: 20231215144652.4193815-2-jean-philippe@linaro.org Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
(cherry picked from commit 6980c31dec42b6daebf7fec13b2d39ed87bb4766) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
target/i386: Fix 32-bit wrapping of pc/eip computation
In 32-bit mode, pc = eip + cs_base is also 32-bit, and must wrap.
Failure to do so results in incorrect memory exceptions to the guest.
Before 732d548732ed, this was implicitly done via truncation to
target_ulong but only in qemu-system-i386, not qemu-system-x86_64.
To fix this, we must add conditional zero-extensions.
Since we have to test for 32 vs 64-bit anyway, note that cs_base
is always zero in 64-bit mode.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2022 Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20231212172510.103305-1-richard.henderson@linaro.org>
(cherry picked from commit b5e0d5d22fbffc3d8f7d3e86d7a2d05a1a974e27) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
(Mjt: context fix in target/i386/tcg/tcg-cpu.c for v8.1.0-1190-gb77af26e97
"accel/tcg: Replace CPUState.env_ptr with cpu_env()")
Kevin Wolf [Fri, 8 Dec 2023 12:43:52 +0000 (13:43 +0100)]
block: Fix AioContext locking in qmp_block_resize()
The AioContext must be unlocked before calling blk_co_unref(), because
it takes the AioContext lock internally in blk_unref_bh(), which is
scheduled in the main thread. If we don't unlock, the AioContext is
locked twice and nested event loops such as in bdrv_graph_wrlock() will
deadlock.
Cc: <qemu-stable@nongnu.org> Fixes: https://issues.redhat.com/browse/RHEL-15965 Fixes: 0c7d204f50c382c6baac8c94bd57af4a022b3888 Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-ID: <20231208124352.30295-1-kwolf@redhat.com>
(cherry picked from commit 755ae3811fec77d94e92398632cbfe23c4ecffd5) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Patrick Venture [Thu, 16 Nov 2023 16:36:33 +0000 (16:36 +0000)]
system/memory: use ldn_he_p/stn_he_p
Using direct pointer dereferencing can allow for unaligned accesses,
which was seen during execution with sanitizers enabled.
Cc: qemu-stable@nongnu.org Reviewed-by: Chris Rauer <crauer@google.com> Reviewed-by: Peter Foley <pefoley@google.com> Signed-off-by: Patrick Venture <venture@google.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: David Hildenbrand <david@redhat.com>
Message-ID: <20231116163633.276671-1-venture@google.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
(cherry picked from commit 2b8fe81b3c2e76d241510a9a85496d544e42f5ec) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Peter Maydell [Mon, 4 Dec 2023 13:34:16 +0000 (13:34 +0000)]
target/arm: Disable SME if SVE is disabled
There is no architectural requirement that SME implies SVE, but
our implementation currently assumes it. (FEAT_SME_FA64 does
imply SVE.) So if you try to run a CPU with eg "-cpu max,sve=off"
you quickly run into an assert when the guest tries to write to
SMCR_EL1:
#6 0x00007ffff4b38e96 in __GI___assert_fail
(assertion=0x5555566e69cb "sm", file=0x5555566e5b24 "../../target/arm/helper.c", line=6865, function=0x5555566e82f0 <__PRETTY_FUNCTION__.31> "sve_vqm1_for_el_sm") at ./assert/assert.c:101
#7 0x0000555555ee33aa in sve_vqm1_for_el_sm (env=0x555557d291f0, el=2, sm=false) at ../../target/arm/helper.c:6865
#8 0x0000555555ee3407 in sve_vqm1_for_el (env=0x555557d291f0, el=2) at ../../target/arm/helper.c:6871
#9 0x0000555555ee3724 in smcr_write (env=0x555557d291f0, ri=0x555557da23b0, value=2147483663) at ../../target/arm/helper.c:6995
#10 0x0000555555fd1dba in helper_set_cp_reg64 (env=0x555557d291f0, rip=0x555557da23b0, value=2147483663) at ../../target/arm/tcg/op_helper.c:839
#11 0x00007fff60056781 in code_gen_buffer ()
Avoid this unsupported and slightly odd combination by
disabling SME when SVE is not present.
Cc: qemu-stable@nongnu.org
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2005 Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20231127173318.674758-1-peter.maydell@linaro.org
(cherry picked from commit f7767ca301796334f74b9b642b395a4bd3e3dbac) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Fiona Ebner [Wed, 22 Nov 2023 12:58:26 +0000 (13:58 +0100)]
ui/vnc-clipboard: fix inflate_buffer
Commit d921fea338 ("ui/vnc-clipboard: fix infinite loop in
inflate_buffer (CVE-2023-3255)") removed this hunk, but it is still
required, because it can happen that stream.avail_in becomes zero
before coming across a return value of Z_STREAM_END in the loop.
This fixes the host->guest direction of the clipboard with noVNC and
TigerVNC as clients.
Fixes: d921fea338 ("ui/vnc-clipboard: fix infinite loop in inflate_buffer (CVE-2023-3255)") Reported-by: Friedrich Weber <f.weber@proxmox.com> Signed-off-by: Fiona Ebner <f.ebner@proxmox.com> Acked-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20231122125826.228189-1-f.ebner@proxmox.com>
(cherry picked from commit ebfbf394671163c14e2b24d98f3927a3151d1aff) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Volker Rümelin [Sat, 11 Nov 2023 10:40:20 +0000 (11:40 +0100)]
ui/gtk-egl: move function calls back to regular code path
Commit 6f189a08c1 ("ui/gtk-egl: Check EGLSurface before doing
scanout") introduced a regression when QEMU is running with a
virtio-gpu-gl-device on a host under X11. After the guest has
initialized the virtio-gpu-gl-device, the guest screen only
shows "Display output is not active.".
Commit 6f189a08c1 moved all function calls in
gd_egl_scanout_texture() to a code path which is only called
once after gd_egl_init() succeeds in gd_egl_scanout_texture().
Move all function calls in gd_egl_scanout_texture() back to
the regular code path so they get always called if one of the
gd_egl_init() calls was successful.
Fixes: 6f189a08c1 ("ui/gtk-egl: Check EGLSurface before doing scanout") Signed-off-by: Volker Rümelin <vr_qemu@t-online.de> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20231111104020.26183-1-vr_qemu@t-online.de>
(cherry picked from commit 53a939f1bf8e4a3e38f9449fac44f572676966ad) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Antonio Caggiano [Mon, 16 Oct 2023 12:32:15 +0000 (14:32 +0200)]
ui/gtk-egl: Check EGLSurface before doing scanout
The first time gd_egl_scanout_texture() is called, there's a possibility
that the GTK drawing area might not be realized yet, in which case its
associated GdkWindow is NULL. This means gd_egl_init() was also skipped
and the EGLContext and EGLSurface stored in the VirtualGfxConsole are
not valid yet.
Continuing with the scanout in this conditions would result in hitting
an assert in libepoxy: "Couldn't find current GLX or EGL context".
A possible workaround is to just ignore the scanout request, giving the
the GTK drawing area some time to finish its realization. At that point,
the gd_egl_init() will succeed and the EGLContext and EGLSurface stored
in the VirtualGfxConsole will be valid.
Signed-off-by: Antonio Caggiano <quic_acaggian@quicinc.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20231016123215.2699269-1-quic_acaggian@quicinc.com>
(cherry picked from commit 6f189a08c1b0085808af1bfbf4567f0da193ecc1) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Robert Hoo [Mon, 13 Nov 2023 08:13:49 +0000 (16:13 +0800)]
msix: unset PCIDevice::msix_vector_poll_notifier in rollback
In the rollback in msix_set_vector_notifiers(), original patch forgot to
undo msix_vector_poll_notifier pointer.
Fixes: bbef882cc193 ("msi: add API to get notified about pending bit poll") Signed-off-by: Robert Hoo <robert.hoo.linux@gmail.com>
Message-Id: <20231113081349.1307-1-robert.hoo.linux@gmail.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
(cherry picked from commit 2d37fe9e5e61b04bddbed00dbb7436e61a01c115) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
hw/acpi/erst: Do not ignore Error* in realize handler
erst_realizefn() passes @errp to functions without checking for
failure. If it runs into another failure, it trips error_setv()'s
assertion.
Use the ERRP_GUARD() macro and check *errp, as suggested in commit ae7c80a7bd ("error: New macro ERRP_GUARD()").
Cc: qemu-stable@nongnu.org Fixes: f7e26ffa59 ("ACPI ERST: support for ACPI ERST feature") Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20231120130017.81286-1-philmd@linaro.org> Reviewed-by: Ani Sinha <anisinha@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
(cherry picked from commit 20bc50137f3add52eb4788b420d717de27fed14b) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Akihiko Odaki [Thu, 23 Nov 2023 07:56:29 +0000 (16:56 +0900)]
pcie_sriov: Remove g_new assertion
g_new() aborts if the allocation fails so it returns NULL only if the
requested allocation size is zero. register_vfs() makes such an
allocation if NumVFs is zero so it should not assert that g_new()
returns a non-NULL value.
Fixes: 7c0fa8dff8 ("pcie: Add support for Single Root I/O Virtualization (SR/IOV)") Buglink: https://issues.redhat.com/browse/RHEL-17209 Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-Id: <20231123075630.12057-1-akihiko.odaki@daynix.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Cédric Le Goater <clg@redhat.com> Tested-by: Yanghang Liu<yanghliu@redhat.com> Reviewed-by: Cédric Le Goater <clg@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
(cherry picked from commit 714a1415d7a69174e1640fcdd6eaae180fe438aa) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Volker Rümelin [Sun, 5 Nov 2023 17:25:51 +0000 (18:25 +0100)]
hw/audio/hda-codec: fix multiplication overflow
After a relatively short time, there is an multiplication overflow
when multiplying (now - buft_start) with hda_bytes_per_second().
While the uptime now - buft_start only overflows after 2**63 ns
= 292.27 years, this happens hda_bytes_per_second() times faster
with the multiplication. At 44100 samples/s * 2 channels
* 2 bytes/channel = 176400 bytes/s that is 14.52 hours. After the
multiplication overflow the affected audio stream stalls.
Replace the multiplication and following division with muldiv64()
to prevent a multiplication overflow.
Fixes: 280c1e1cdb ("audio/hda: create millisecond timers that handle IO") Reported-by: M_O_Bz <m_o_bz@163.com> Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-Id: <20231105172552.8405-1-vr_qemu@t-online.de> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
(cherry picked from commit 74e8593e7e51d6b11ae9c56a3f4e7bb714bac4ec) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Gihun Nam [Mon, 27 Nov 2023 02:54:20 +0000 (11:54 +0900)]
hw/avr/atmega: Fix wrong initial value of stack pointer
The current implementation initializes the stack pointer of AVR devices
to 0. Although older AVR devices used to be like that, newer ones set
it to RAMEND.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1525 Signed-off-by: Gihun Nam <gihun.nam@outlook.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <PH0P222MB0010877445B594724D40C924DEBDA@PH0P222MB0010.NAMP222.PROD.OUTLOOK.COM> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
(cherry picked from commit 235948bf53860a1e2df5134eae7b0a30a971a124) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
hw/virtio: Add VirtioPCIDeviceTypeInfo::instance_finalize field
The VirtioPCIDeviceTypeInfo structure, added in commit a4ee4c8baa
("virtio: Helper for registering virtio device types") got extended
in commit 8ea90ee690 ("virtio: add class_size") with the @class_size
field. Do similarly with the @instance_finalize field.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20231121174051.63038-2-philmd@linaro.org Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
(cherry picked from commit 837053a7f491b445088eac647abe7f462c50f59a) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
but forgot to free the 'oscclk_reset' array. Do it in the
instance_finalize() handler.
Cc: qemu-stable@nongnu.org Fixes: 4fb013afcc ("hw/misc/mps2-scc: Support configurable number of OSCCLK values") # v6.0.0+ Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20231121174051.63038-4-philmd@linaro.org Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
(cherry picked from commit 896dd6ff7b9f2575f1a908a07f26a70b58d8b675) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
but forgot to free the 'vdev.reserved_regions' array. Do it in the
instance_finalize() handler.
Cc: qemu-stable@nongnu.org Fixes: 8077b8e549 ("virtio-iommu-pci: Add array of Interval properties") # v5.1.0+ Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Eric Auger <eric.auger@redhat.com>
Message-id: 20231121174051.63038-3-philmd@linaro.org Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
(cherry picked from commit c9a4aa06dfce0fde1e279e1ea0c1945582ec0d16) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
(Mjt: fixup hw/virtio/virtio-iommu-pci.c for before v8.1.0-2552-g41cc70cdf5,
"virtio-iommu: Rename reserved_regions into prop_resv_regions" -- so now
patch subject matches actual change again)
Peter Maydell [Mon, 20 Nov 2023 17:35:06 +0000 (17:35 +0000)]
target/arm: Handle overflow in calculation of next timer tick
In commit edac4d8a168 back in 2015 when we added support for
the virtual timer offset CNTVOFF_EL2, we didn't correctly update
the timer-recalculation code that figures out when the timer
interrupt is next going to change state. We got it wrong in
two ways:
* for the 0->1 transition, we didn't notice that gt->cval + offset
can overflow a uint64_t
* for the 1->0 transition, we didn't notice that the transition
might now happen before the count rolls over, if offset > count
In the former case, we end up trying to set the next interrupt
for a time in the past, which results in QEMU hanging as the
timer fires continuously.
In the latter case, we would fail to update the interrupt
status when we are supposed to.
Fix the calculations in both cases.
The test case is Alex Bennée's from the bug report, and tests
the 0->1 transition overflow case.
Fixes: edac4d8a168 ("target-arm: Add CNTVOFF_EL2") Cc: qemu-stable@nongnu.org
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/60 Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20231120173506.3729884-1-peter.maydell@linaro.org Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
(cherry picked from commit 8d37a1425b9954d7e445615dcad23456515e24c0) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Peter Maydell [Mon, 20 Nov 2023 15:01:21 +0000 (15:01 +0000)]
target/arm: Set IL bit for pauth, SVE access, BTI trap syndromes
The syndrome register value always has an IL field at bit 25, which
is 0 for a trap on a 16 bit instruction, and 1 for a trap on a 32
bit instruction (or for exceptions which aren't traps on a known
instruction, like PC alignment faults). This means that our
syn_*() functions should always either take an is_16bit argument to
determine whether to set the IL bit, or else unconditionally set it.
We missed setting the IL bit for the syndrome for three kinds of trap:
* an SVE access exception
* a pointer authentication check failure
* a BTI (branch target identification) check failure
All of these traps are AArch64 only, and so the instruction causing
the trap is always 64 bit. This means we can unconditionally set
the IL bit in the syn_*() function.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20231120150121.3458408-1-peter.maydell@linaro.org Cc: qemu-stable@nongnu.org Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
(cherry picked from commit 11a3c4a286d5dc603582ea0a1fca62c2ec0a1aee) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Fam Zheng <fam@euphon.net>
Message-ID: <20231124115654.3239137-1-fam@euphon.net> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit 9fb7b350ba9816ebca8a7614fec486fd4269ab2d) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Ivan Klokov [Tue, 21 Nov 2023 07:17:57 +0000 (10:17 +0300)]
target/riscv/cpu_helper.c: Fix mxr bit behavior
According to RISCV Specification sect 9.5 on two stage translation when
V=1 the vsstatus(mstatus in QEMU's terms) field MXR, which makes
execute-only pages readable, only overrides VS-stage page protection.
Setting MXR at HS-level(mstatus_hs), however, overrides both VS-stage
and G-stage execute-only permissions.
The hypervisor extension changes the behavior of MXR\MPV\MPRV bits.
Due to RISCV Specification sect. 9.4.1 when MPRV=1, explicit memory
accesses are translated and protected, and endianness is applied, as
though the current virtualization mode were set to MPV and the current
nominal privilege mode were set to MPP. vsstatus.MXR makes readable
those pages marked executable at the VS translation stage.
Fixes: 36a18664ba ("target/riscv: Implement second stage MMU") Signed-off-by: Ivan Klokov <ivan.klokov@syntacore.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Message-ID: <20231121071757.7178-3-ivan.klokov@syntacore.com> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
(cherry picked from commit 6bca4d7d1ff2b8857486c3ff31f5c6fc3e3984b4) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Ivan Klokov [Tue, 21 Nov 2023 07:17:56 +0000 (10:17 +0300)]
target/riscv/cpu_helper.c: Invalid exception on MMU translation stage
According to RISCV privileged spec sect. 5.3.2 Virtual Address Translation Process
access-fault exceptions may raise only after PMA/PMP check. Current implementation
generates an access-fault for mbare mode even if there were no PMA/PMP errors.
This patch removes the erroneous MMU mode check and generates an access-fault
exception based on the pmp_violation flag only.
Fixes: 1448689c7b ("target/riscv: Allow specifying MMU stage") Signed-off-by: Ivan Klokov <ivan.klokov@syntacore.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Message-ID: <20231121071757.7178-2-ivan.klokov@syntacore.com> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
(cherry picked from commit 82d53adfbb1aa0dbe7dac09b61ad86014efe81a7) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Román Cárdenas [Fri, 17 Nov 2023 08:28:42 +0000 (09:28 +0100)]
riscv: Fix SiFive E CLINT clock frequency
If you check the manual of SiFive E310 (https://cdn.sparkfun.com/assets/7/f/0/2/7/fe310-g002-manual-v19p05.pdf),
you can see in Figure 1 that the CLINT is connected to the real time clock, which also feeds the AON peripheral (they share the same clock).
In page 43, the docs also say that the timer registers of the CLINT count ticks from the rtcclk.
I am currently playing with bare metal applications both in QEMU and a physical SiFive E310 board and
I confirm that the CLINT clock in the physical board runs at 32.768 kHz.
In QEMU, the same app produces a completely different outcome, as sometimes a new CLINT interrupt is triggered before finishing other tasks.
hw/riscv/virt.c: do create_fdt() earlier, add finalize_fdt()
Commit 49554856f0 fixed a problem, where TPM devices were not appearing
in the FDT, by delaying the FDT creation up until virt_machine_done().
This create a side effect (see gitlab #1925) - devices that need access
to the '/chosen' FDT node during realize() stopped working because, at
that point, we don't have a FDT.
This happens because our FDT creation is monolithic, but it doesn't need
to be. We can add the needed FDT components for realize() time and, at
the same time, do another FDT round where we account for dynamic sysbus
devices. In other words, the problem fixed by 49554856f0 could also be
fixed by postponing only create_fdt_sockets() and its dependencies,
leaving everything else from create_fdt() to be done during init().
Split the FDT creation in two parts:
- create_fdt(), now moved back to virt_machine_init(), will create FDT
nodes that doesn't depend on additional (dynamic) devices from the
sysbus;
- a new finalize_fdt() step is added, where create_fdt_sockets() and
friends is executed, accounting for the dynamic sysbus devices that
were added during realize().
This will make both use cases happy: TPM devices are still working as
intended, and devices such as 'guest-loader' have a FDT to work on
during realize().
Fixes: 49554856f0 ("riscv: Generate devicetree only after machine initialization is complete")
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1925 Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20231110172559.73209-1-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
(cherry picked from commit 7a87ba8956e59bec8cc4677c6aa5141e4c023a7d) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Palmer Dabbelt [Fri, 10 Nov 2023 17:37:16 +0000 (09:37 -0800)]
linux-user/riscv: Add Zicboz block size to hwprobe
Support for probing the Zicboz block size landed in Linux 6.6, which was
released a few weeks ago. This provides the user-configured block size
when Zicboz is enabled.
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Message-ID: <20231110173716.24423-1-palmer@rivosinc.com> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
(cherry picked from commit 301c65f49f9602f39b9f3ce0ad9ff70d4bda7226) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
(Mjt: fixup linux-user/syscall.c to before v8.1.0-2602-ge57039ddab
"target/riscv: rename ext_icboz to ext_zicboz")
tests/avocado: Replace assertRegexpMatches() for Python 3.12 compatibility
assertRegexpMatches() has been removed in Python 3.12 and should be replaced by
assertRegex(). See: https://docs.python.org/3.12/whatsnew/3.12.html#id3
Inspired-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20231114144832.71612-1-philmd@linaro.org> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
(cherry picked from commit f0a663b4ced2bf315936c774c2b6ff398fce8905) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
(Mjt: adjust context for before v8.1.0-1582-g684750ab4f
"python/qemu: rename command() to cmd()")
Thomas Huth [Tue, 14 Nov 2023 13:43:26 +0000 (14:43 +0100)]
tests/avocado: Replace assertEquals() for Python 3.12 compatibility
assertEquals() has been removed in Python 3.12 and should be replaced by
assertEqual(). See: https://docs.python.org/3.12/whatsnew/3.12.html#id3
Message-ID: <20231114134326.287242-1-thuth@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Thomas Huth <thuth@redhat.com>
(cherry picked from commit 861f724d03e1748cda1c5b9ec8457a368590cbd5) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
(Mjt: adjust context in pc_cpu_hotplug_props.py & cpu_queries.py for before v8.1.0-1582-g684750ab4f "python/qemu: rename command() to cmd()")
linux-user: Fix loaddr computation for some elf files
The file offset of the load segment is not relevant to the
low address, only the beginning of the virtual address page.
Cc: qemu-stable@nongnu.org Fixes: a93934fecd4 ("elf: take phdr offset into account when calculating the program load address")
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1952 Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
(cherry picked from commit 82d70a84c8ee42ef969a9cfddc0f5b30b16165f5) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Akihiko Odaki [Thu, 1 Jun 2023 03:18:59 +0000 (12:18 +0900)]
net: Update MemReentrancyGuard for NIC
Recently MemReentrancyGuard was added to DeviceState to record that the
device is engaging in I/O. The network device backend needs to update it
when delivering a packet to a device.
This implementation follows what bottom half does, but it does not add
a tracepoint for the case that the network device backend started
delivering a packet to a device which is already engaging in I/O. This
is because such reentrancy frequently happens for
qemu_flush_queued_packets() and is insignificant.
Fixes: CVE-2023-3019 Reported-by: Alexander Bulekov <alxndr@bu.edu> Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com> Acked-by: Alexander Bulekov <alxndr@bu.edu> Signed-off-by: Jason Wang <jasowang@redhat.com>
(cherry picked from commit 9050f976e447444ea6ee2ba12c9f77e4b0dc54bc) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Akihiko Odaki [Thu, 1 Jun 2023 03:18:58 +0000 (12:18 +0900)]
net: Provide MemReentrancyGuard * to qemu_new_nic()
Recently MemReentrancyGuard was added to DeviceState to record that the
device is engaging in I/O. The network device backend needs to update it
when delivering a packet to a device.
In preparation for such a change, add MemReentrancyGuard * as a
parameter of qemu_new_nic().
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com> Reviewed-by: Alexander Bulekov <alxndr@bu.edu> Signed-off-by: Jason Wang <jasowang@redhat.com>
(cherry picked from commit 7d0fefdf81f5973334c344f6b8e1896c309dff66) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
(Mjt: fixup in hw/net/xen_nic.c due to lack of v8.1.0-2771-g25967ff69f
"hw/xen: update Xen PV NIC to XenDevice model")
Niklas Cassel [Wed, 8 Nov 2023 22:26:57 +0000 (23:26 +0100)]
hw/ide/ahci: fix legacy software reset
Legacy software contains a standard mechanism for generating a reset to a
Serial ATA device - setting the SRST (software reset) bit in the Device
Control register.
Serial ATA has a more robust mechanism called COMRESET, also referred to
as port reset. A port reset is the preferred mechanism for error
recovery and should be used in place of software reset.
Commit e2a5d9b3d9c3 ("hw/ide/ahci: simplify and document PxCI handling")
(mjt: 16cc9594d23d in stable-8.1 series, v8.1.1)
improved the handling of PxCI, such that PxCI gets cleared after handling
a non-NCQ, or NCQ command (instead of incorrectly clearing PxCI after
receiving anything - even a FIS that failed to parse, which should NOT
clear PxCI, so that you can see which command slot that caused an error).
However, simply clearing PxCI after a non-NCQ, or NCQ command, is not
enough, we also need to clear PxCI when receiving a SRST in the Device
Control register.
A legacy software reset is performed by the host sending two H2D FISes,
the first H2D FIS asserts SRST, and the second H2D FIS deasserts SRST.
The first H2D FIS will not get a D2H reply, and requires the FIS to have
the C bit set to one, such that the HBA itself will clear the bit in PxCI.
The second H2D FIS will get a D2H reply once the diagnostic is completed.
The clearing of the bit in PxCI for this command should ideally be done
in ahci_init_d2h() (if it was a legacy software reset that caused the
reset (a COMRESET does not use a command slot)). However, since the reset
value for PxCI is 0, modify ahci_reset_port() to actually clear PxCI to 0,
that way we can avoid complex logic in ahci_init_d2h().
This fixes an issue for FreeBSD where the device would fail to reset.
The problem was not noticed in Linux, because Linux uses a COMRESET
instead of a legacy software reset by default.
Fixes: e2a5d9b3d9c3 ("hw/ide/ahci: simplify and document PxCI handling") Reported-by: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org> Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Message-ID: <20231108222657.117984-1-nks@flawful.org> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Tested-by: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit eabb921250666501ae78714b60090200b639fcfe) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
(mjt: mention 16cc9594d23d for stable-8.1)
Max Filippov [Fri, 10 Nov 2023 19:37:43 +0000 (11:37 -0800)]
linux-user: xtensa: fix signal delivery in FDPIC
In FDPIC signal handlers are passed around as FD pointers. Actual code
address and GOT pointer must be fetched from memory by the QEMU code
that implements kernel signal delivery functionality. This change is
equivalent to the following kernel change: 9c2cc74fb31e ("xtensa: fix signal delivery to FDPIC process")
Cc: qemu-stable@nongnu.org Fixes: d2796be69d7c ("linux-user: add support for xtensa FDPIC") Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
(cherry picked from commit 1b173d06068c4a4e93fad88205399232925967a4) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Peter Maydell [Thu, 9 Nov 2023 15:19:17 +0000 (15:19 +0000)]
target/arm: HVC at EL3 should go to EL3, not EL2
AArch64 permits code at EL3 to use the HVC instruction; however the
exception we take should go to EL3, not down to EL2 (see the pseudocode
AArch64.CallHypervisor()). Fix the target EL.
Cc: qemu-stable@nongnu.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Edgar E. Iglesias <edgar@zeroasic.com>
Message-id: 20231109151917.1925107-1-peter.maydell@linaro.org
(cherry picked from commit fc58891d0422607d172a3d6b3158798f2556aef1) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Matthew Rosato [Fri, 10 Nov 2023 17:51:08 +0000 (12:51 -0500)]
s390x/pci: only limit DMA aperture if vfio DMA limit reported
If the host kernel lacks vfio DMA limit reporting, do not attempt
to shrink the guest DMA aperture.
Fixes: df202e3ff3 ("s390x/pci: shrink DMA aperture to be bound by vfio DMA limit") Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Message-ID: <20231110175108.465851-3-mjrosato@linux.ibm.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
(cherry picked from commit 8011b508cf0ddbdbda03820f4fa6cd484a6d9aed) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
KVM for RISC-V started supporting KVM_GET_REG_LIST in Linux 6.6. It
consists of a KVM ioctl() that retrieves a list of all available regs
for get_one_reg/set_one_reg. Regs that aren't present in the list aren't
supported in the host.
This simplifies our lives when initing the KVM regs since we don't have
to always attempt a KVM_GET_ONE_REG for all regs QEMU knows. We'll only
attempt a get_one_reg() if we're sure the reg is supported, i.e. it was
retrieved by KVM_GET_REG_LIST. Any error in get_one_reg() will then
always considered fatal, instead of having to handle special error codes
that might indicate a non-fatal failure.
Start by moving the current kvm_riscv_init_multiext_cfg() logic into a
new kvm_riscv_read_multiext_legacy() helper. We'll prioritize using
KVM_GET_REG_LIST, so check if we have it available and, in case we
don't, use the legacy() logic.
Otherwise, retrieve the available reg list and use it to check if the
host supports our known KVM regs, doing the usual get_one_reg() for
the supported regs and setting cpu->cfg accordingly.
Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com> Acked-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Message-ID: <20231003132148.797921-3-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
(cherry picked from commit 608bdebb6075b757e5505f6bbc60c45a54a1390b) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
(Mjt: trivial context tweak in target/riscv/kvm.c)
Our error message is returning the value of 'ret', which will be always
-1 in case of error, and will not be that useful:
qemu-system-riscv64: Unable to read ISA_EXT KVM register ssaia, error -1
Improve the error message by outputting 'errno' instead of 'ret'. Use
strerrorname_np() to output the error name instead of the error code.
This will give us what we need to know right away:
Given that we're going to exit(1) in this condition instead of
attempting to recover, remove the 'kvm_riscv_destroy_scratch_vcpu()'
call.
Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Andrew Jones <ajones@ventanamicro.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20231003132148.797921-2-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
(cherry picked from commit 082e9e4a58ba80ec056220a2f762a1c6b9a3a96c) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
LAALG uses op_laa() and wout_addu64(). The latter expects cc_src to be
set, but the former does not do it. This can lead to assertion failures
if something sets cc_src to neither 0 nor 1 before.
Fix by introducing op_laa_addu64(), which sets cc_src, and using it for
LAALG.
Fixes: 4dba4d6fef61 ("target/s390x: Use atomic operations for LOAD AND OP") Cc: qemu-stable@nongnu.org Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20231106093605.1349201-4-iii@linux.ibm.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
(cherry picked from commit bea402482a8c94389638cbd3d7fe3963fb317f4c) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
tests/qtest: ahci-test: add test exposing reset issue with pending callback
Before commit "hw/ide: reset: cancel async DMA operation before
resetting state", this test would fail, because a reset with a
pending write operation would lead to an unsolicited write to the
first sector of the disk.
The test writes a pattern to the beginning of the disk and verifies
that it is still intact after a reset with a pending operation. It
also checks that the pending operation actually completes correctly.
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
Message-ID: <20230906130922.142845-2-f.ebner@proxmox.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
(cherry picked from commit cc610857bbd3551f4b86ae2299336b5d9aa0db2b) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
hw/ide: reset: cancel async DMA operation before resetting state
If there is a pending DMA operation during ide_bus_reset(), the fact
that the IDEState is already reset before the operation is canceled
can be problematic. In particular, ide_dma_cb() might be called and
then use the reset IDEState which contains the signature after the
reset. When used to construct the IO operation this leads to
ide_get_sector() returning 0 and nsector being 1. This is particularly
bad, because a write command will thus destroy the first sector which
often contains a partition table or similar.
Traces showing the unsolicited write happening with IDEState
0x5595af6949d0 being used after reset:
Naohiro Aota [Mon, 30 Oct 2023 07:38:53 +0000 (16:38 +0900)]
file-posix: fix over-writing of returning zone_append offset
raw_co_zone_append() sets "s->offset" where "BDRVRawState *s". This pointer
is used later at raw_co_prw() to save the block address where the data is
written.
When multiple IOs are on-going at the same time, a later IO's
raw_co_zone_append() call over-writes a former IO's offset address before
raw_co_prw() completes. As a result, the former zone append IO returns the
initial value (= the start address of the writing zone), instead of the
proper address.
Fix the issue by passing the offset pointer to raw_co_prw() instead of
passing it through s->offset. Also, remove "offset" from BDRVRawState as
there is no usage anymore.
Fixes: 4751d09adcc3 ("block: introduce zone append write for zoned devices") Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Message-Id: <20231030073853.2601162-1-naohiro.aota@wdc.com> Reviewed-by: Sam Li <faithilikerun@gmail.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Hanna Czenczek <hreitz@redhat.com>
(cherry picked from commit ad4feaca61d76fecad784e6d5e7bae40d0411c46) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Sam Li [Fri, 25 Aug 2023 04:05:56 +0000 (12:05 +0800)]
block/file-posix: fix update_zones_wp() caller
When the zoned request fail, it needs to update only the wp of
the target zones for not disrupting the in-flight writes on
these other zones. The wp is updated successfully after the
request completes.
Fixed the callers with right offset and nr_zones.
Signed-off-by: Sam Li <faithilikerun@gmail.com>
Message-Id: <20230825040556.4217-1-faithilikerun@gmail.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
[hreitz: Rebased and fixed comment spelling] Signed-off-by: Hanna Czenczek <hreitz@redhat.com>
(cherry picked from commit 10b9e0802a074c991e1ce485631d75641d0b0f9e) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
qcow2: keep reference on zeroize with discard-no-unref enabled
When the discard-no-unref flag is enabled, we keep the reference for
normal discard requests.
But when a discard is executed on a snapshot/qcow2 image with backing,
the discards are saved as zero clusters in the snapshot image.
When committing the snapshot to the backing file, not
discard_in_l2_slice is called but zero_in_l2_slice. Which did not had
any logic to keep the reference when discard-no-unref is enabled.
Therefor we add logic in the zero_in_l2_slice call to keep the reference
on commit.
Fixes: https://gitlab.com/qemu-project/qemu/-/issues/1621 Signed-off-by: Jean-Louis Dupond <jean-louis@dupond.be>
Message-Id: <20231003125236.216473-2-jean-louis@dupond.be>
[hreitz: Made the documentation change more verbose, as discussed
on-list] Signed-off-by: Hanna Czenczek <hreitz@redhat.com>
(cherry picked from commit b2b109041ecd1095384f5be5bb9badd13c1cf286) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Peter Maydell [Mon, 6 Nov 2023 15:00:29 +0000 (15:00 +0000)]
target/arm: Fix A64 LDRA immediate decode
In commit be23a049 in the conversion to decodetree we broke the
decoding of the immediate value in the LDRA instruction. This should
be a 10 bit signed value that is scaled by 8, but in the conversion
we incorrectly ended up scaling it only by 2. Fix the scaling
factor.
Cc: qemu-stable@nongnu.org
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1970 Fixes: be23a049 ("target/arm: Convert load (pointer auth) insns to decodetree") Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20231106113445.1163063-1-peter.maydell@linaro.org
(cherry picked from commit 5722fc471296d5f042df4b005a851cc8008df0c9) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
block/nvme: nvme_process_completion() fix bound for cid
NVMeQueuePair::reqs has length NVME_NUM_REQS, which less than
NVME_QUEUE_SIZE by 1.
Fixes: 1086e95da17050 ("block/nvme: switch to a NVMeRequest freelist") Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Maksim Davydov <davydov-max@yandex-team.ru>
Message-id: 20231017125941.810461-5-vsementsov@yandex-team.ru Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
(cherry picked from commit cc8fb0c3ae3c950eb40e969607e17ff16a7519ac) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
David Woodhouse [Fri, 20 Oct 2023 17:00:18 +0000 (18:00 +0100)]
hw/xen: use correct default protocol for xen-block on x86
Even on x86_64 the default protocol is the x86-32 one if the guest doesn't
specifically ask for x86-64.
Cc: qemu-stable@nongnu.org Fixes: b6af8926fb85 ("xen: add implementations of xen-block connect and disconnect functions...") Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Reviewed-by: Paul Durrant <paul@xen.org>
(cherry picked from commit a1c1082908dde4867b1ac55f546bea0c17d52318) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
David Woodhouse [Tue, 24 Oct 2023 21:22:47 +0000 (22:22 +0100)]
hw/xen: take iothread mutex in xen_evtchn_reset_op()
The xen_evtchn_soft_reset() function requires the iothread mutex, but is
also called for the EVTCHNOP_reset hypercall. Ensure the mutex is taken
in that case.
Cc: qemu-stable@nongnu.org Fixes: a15b10978fe6 ("hw/xen: Implement EVTCHNOP_reset") Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Reviewed-by: Paul Durrant <paul@xen.org>
(cherry picked from commit debc995e883b05c2fd02fb797a61ab1328e5bae2) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
David Woodhouse [Tue, 17 Oct 2023 12:34:18 +0000 (13:34 +0100)]
hw/xen: fix XenStore watch delivery to guest
When fire_watch_cb() found the response buffer empty, it would call
deliver_watch() to generate the XS_WATCH_EVENT message in the response
buffer and send an event channel notification to the guest… without
actually *copying* the response buffer into the ring. So there was
nothing for the guest to see. The pending response didn't actually get
processed into the ring until the guest next triggered some activity
from its side.
Add the missing call to put_rsp().
It might have been slightly nicer to call xen_xenstore_event() here,
which would *almost* have worked. Except for the fact that it calls
xen_be_evtchn_pending() to check that it really does have an event
pending (and clear the eventfd for next time). And under Xen it's
defined that setting that fd to O_NONBLOCK isn't guaranteed to work,
so the emu implementation follows suit.
This fixes Xen device hot-unplug.
Cc: qemu-stable@nongnu.org Fixes: 0254c4d19df ("hw/xen: Add xenstore wire implementation and implementation stubs") Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Reviewed-by: Paul Durrant <paul@xen.org>
(cherry picked from commit 4a5780f52095f1daf23618dc6198a2a1665ea505) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
David Woodhouse [Wed, 18 Oct 2023 12:31:20 +0000 (13:31 +0100)]
hw/xen: don't clear map_track[] in xen_gnttab_reset()
The refcounts actually correspond to 'active_ref' structures stored in a
GHashTable per "user" on the backend side (mostly, per XenDevice).
If we zero map_track[] on reset, then when the backend drivers get torn
down and release their mapping we hit the assert(s->map_track[ref] != 0)
in gnt_unref().
So leave them in place. Each backend driver will disconnect and reconnect
as the guest comes back up again and reconnects, and it all works out OK
in the end as the old refs get dropped.
Cc: qemu-stable@nongnu.org Fixes: de26b2619789 ("hw/xen: Implement soft reset for emulated gnttab") Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Reviewed-by: Paul Durrant <paul@xen.org>
(cherry picked from commit 3de75ed352411899dbc9222e82fe164890c77e78) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
David Woodhouse [Wed, 11 Oct 2023 23:06:26 +0000 (00:06 +0100)]
hw/xen: select kernel mode for per-vCPU event channel upcall vector
A guest which has configured the per-vCPU upcall vector may set the
HVM_PARAM_CALLBACK_IRQ param to fairly much anything other than zero.
For example, Linux v6.0+ after commit b1c3497e604 ("x86/xen: Add support
for HVMOP_set_evtchn_upcall_vector") will just do this after setting the
vector:
/* Trick toolstack to think we are enlightened. */
if (!cpu)
rc = xen_set_callback_via(1);
That's explicitly setting the delivery to GSI#1, but it's supposed to be
overridden by the per-vCPU vector setting. This mostly works in Qemu
*except* for the logic to enable the in-kernel handling of event channels,
which falsely determines that the kernel cannot accelerate GSI delivery
in this case.
Add a kvm_xen_has_vcpu_callback_vector() to report whether vCPU#0 has
the vector set, and use that in xen_evtchn_set_callback_param() to
enable the kernel acceleration features even when the param *appears*
to be set to target a GSI.
Preserve the Xen behaviour that when HVM_PARAM_CALLBACK_IRQ is set to
*zero* the event channel delivery is disabled completely. (Which is
what that bizarre guest behaviour is working round in the first place.)
Cc: qemu-stable@nongnu.org Fixes: 91cce756179 ("hw/xen: Add xen_evtchn device for event channel emulation") Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Reviewed-by: Paul Durrant <paul@xen.org>
(cherry picked from commit 18e83f28bf39ffd2784aeb2e4e229096a86d349b) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
David Woodhouse [Wed, 11 Oct 2023 22:30:08 +0000 (23:30 +0100)]
i386/xen: fix per-vCPU upcall vector for Xen emulation
The per-vCPU upcall vector support had three problems. Firstly it was
using the wrong hypercall argument and would always return -EFAULT when
the guest tried to set it up. Secondly it was using the wrong ioctl() to
pass the vector to the kernel and thus the *kernel* would always return
-EINVAL. Finally, even when delivering the event directly from userspace
with an MSI, it put the destination CPU ID into the wrong bits of the
MSI address.
Linux doesn't (yet) use this mode so it went without decent testing
for a while.
Cc: qemu-stable@nongnu.org Fixes: 105b47fdf2d0 ("i386/xen: implement HVMOP_set_evtchn_upcall_vector") Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Reviewed-by: Paul Durrant <paul@xen.org>
(cherry picked from commit e7dbb62ff19ce55548c785d76e814e7b144e6217) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Cédric Le Goater [Thu, 26 Oct 2023 07:06:35 +0000 (09:06 +0200)]
vfio/pci: Fix buffer overrun when writing the VF token
qemu_uuid_unparse() includes a trailing NUL when writing the uuid
string and the buffer size should be UUID_FMT_LEN + 1 bytes. Use the
recently added UUID_STR_LEN which defines the correct size.
Fixes: CID 1522913 Fixes: 2dca1b37a760 ("vfio/pci: add support for VF token") Cc: Alex Williamson <alex.williamson@redhat.com> Reviewed-by: Alex Williamson <alex.williamson@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Reviewed-by: "Denis V. Lunev" <den@openvz.org> Signed-off-by: Cédric Le Goater <clg@redhat.com>
(cherry picked from commit f8d6f3b16c37bd516a026e92a31dade5d761d3a6) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Cédric Le Goater [Thu, 26 Oct 2023 07:06:34 +0000 (09:06 +0200)]
util/uuid: Add UUID_STR_LEN definition
qemu_uuid_unparse() includes a trailing NUL when writing the uuid
string and the buffer size should be UUID_FMT_LEN + 1 bytes. Add a
define for this size and use it where required.
Cc: Fam Zheng <fam@euphon.net> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Juan Quintela <quintela@redhat.com> Reviewed-by: "Denis V. Lunev" <den@openvz.org> Signed-off-by: Cédric Le Goater <clg@redhat.com>
(cherry picked from commit 721da0396cfa0a4859cefb57e32cc79d19d80f54) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Peter Maydell [Tue, 31 Oct 2023 17:37:23 +0000 (17:37 +0000)]
target/arm: Correctly propagate stage 1 BTI guarded bit in a two-stage walk
In a two-stage translation, the result of the BTI guarded bit should
be the guarded bit from the first stage of translation, as there is
no BTI guard information in stage two. Our code tried to do this,
but got it wrong, because we currently have two fields where the GP
bit information might live (ARMCacheAttrs::guarded and
CPUTLBEntryFull::extra::arm::guarded), and we were storing the GP bit
in the latter during the stage 1 walk but trying to copy the former
in combine_cacheattrs().
Remove the duplicated storage, and always use the field in
CPUTLBEntryFull; correctly propagate the stage 1 value to the output
in get_phys_addr_twostage().
Note for stable backports: in v8.0 and earlier the field is named
result->f.guarded, not result->f.extra.arm.guarded.
Cc: qemu-stable@nongnu.org
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1950 Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20231031173723.26582-1-peter.maydell@linaro.org
(cherry picked from commit 4c09abeae8704970ff03bf2196973f6bf08ab6f9) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
(Mjt: replace f.extra.arm.guarded -> f.guarded due to v8.1.0-1179-ga81fef4b64)
qemu-iotests: 024: add rebasing test case for overlay_size > backing_size
Before previous commit, rebase was getting infitely stuck in case of
rebasing within the same backing chain and when overlay_size > backing_size.
Let's add this case to the rebasing test 024 to make sure it doesn't
break again.
Signed-off-by: Andrey Drobyshev <andrey.drobyshev@virtuozzo.com> Reviewed-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Hanna Czenczek <hreitz@redhat.com>
Message-ID: <20230919165804.439110-3-andrey.drobyshev@virtuozzo.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit 827171c3180533f4ad0bc338ea166f401bb5d348) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
qemu-img: rebase: stop when reaching EOF of old backing file
In case when we're rebasing within one backing chain, and when target image
is larger than old backing file, bdrv_is_allocated_above() ends up setting
*pnum = 0. As a result, target offset isn't getting incremented, and we
get stuck in an infinite for loop. Let's detect this case and proceed
further down the loop body, as the offsets beyond the old backing size need
to be explicitly zeroed.
Signed-off-by: Andrey Drobyshev <andrey.drobyshev@virtuozzo.com> Reviewed-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Hanna Czenczek <hreitz@redhat.com>
Message-ID: <20230919165804.439110-2-andrey.drobyshev@virtuozzo.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit 8b097fd6b06ec295faefd4f30f96f8709abc9605) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Akihiko Odaki [Sun, 29 Oct 2023 14:50:16 +0000 (14:50 +0000)]
tests/tcg: Add -fno-stack-protector
A build of GCC 13.2 will have stack protector enabled by default if it
was configured with --enable-default-ssp option. For such a compiler,
it is necessary to explicitly disable stack protector when linking
without standard libraries.
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-Id: <20230731091042.139159-3-akihiko.odaki@daynix.com>
[AJB: fix comment string typo] Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20231029145033.592566-3-alex.bennee@linaro.org>
(cherry picked from commit 580731dcc87eb27a2b0dc20ec331f1ce51864c97) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Kevin Wolf [Fri, 13 Oct 2023 15:33:01 +0000 (17:33 +0200)]
block: Fix locking in media change monitor commands
blk_insert_bs() requires that the caller holds the AioContext lock for
the node to be inserted. Since commit c066e808e11, neglecting to do so
causes a crash when the child has to be moved to a different AioContext
to attach it to the BlockBackend.
This fixes qmp_blockdev_insert_anon_medium(), which is called for the
QMP commands 'blockdev-insert-medium' and 'blockdev-change-medium', to
correctly take the lock.
Cc: qemu-stable@nongnu.org Fixes: https://issues.redhat.com/browse/RHEL-3922 Fixes: c066e808e11a5c181b625537b6c78e0de27a4801 Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20231013153302.39234-2-kwolf@redhat.com> Reviewed-by: Hanna Czenczek <hreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit fed824501501518b1ad3dc08a39f8f855508190d) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Glenn Miles [Tue, 24 Oct 2023 19:19:45 +0000 (14:19 -0500)]
misc/led: LED state is set opposite of what is expected
Testing of the LED state showed that when the LED polarity was
set to GPIO_POLARITY_ACTIVE_LOW and a low logic value was set on
the input GPIO of the LED, the LED was being turn off when it was
expected to be turned on.
Fixes: ddb67f6402 ("hw/misc/led: Allow connecting from GPIO output") Signed-off-by: Glenn Miles <milesg@linux.vnet.ibm.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Andrew Jeffery <andrew@codeconstruct.com.au>
Message-id: 20231024191945.4135036-1-milesg@linux.vnet.ibm.com Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
(cherry picked from commit 6f83dc67168d17856744275e2a0d7a6addf6cfb9) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Peter Maydell [Tue, 24 Oct 2023 17:24:38 +0000 (18:24 +0100)]
target/arm: Fix syndrome for FGT traps on ERET
In commit 442c9d682c94fc2 when we converted the ERET, ERETAA, ERETAB
instructions to decodetree, the conversion accidentally lost the
correct setting of the syndrome register when taking a trap because
of the FEAT_FGT HFGITR_EL1.ERET bit. Instead of reporting a correct
full syndrome value with the EC and IL bits, we only reported the low
two bits of the syndrome, because the call to syn_erettrap() got
dropped.
Fix the syndrome values for these traps by reinstating the
syn_erettrap() calls.
Fixes: 442c9d682c94fc2 ("target/arm: Convert ERET, ERETAA, ERETAB to decodetree") Cc: qemu-stable@nongnu.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20231024172438.2990945-1-peter.maydell@linaro.org
(cherry picked from commit 307521d6e29e559c89afa9dbd337ae75fe3c436d) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Peter Maydell [Thu, 19 Oct 2023 14:47:47 +0000 (15:47 +0100)]
hw/rdma/vmw/pvrdma_cmd: Use correct struct in query_port()
In query_port() we pass the address of a local pvrdma_port_attr
struct to the rdma_query_backend_port() function. Unfortunately,
rdma_backend_query_port() wants a pointer to a struct ibv_port_attr,
and the two are not the same length.
Coverity spotted this (CID 1507146): pvrdma_port_attr is 48 bytes
long, and ibv_port_attr is 52 bytes, because it has a few extra
fields at the end.
Fortunately, all we do with the attrs struct after the call is to
read a few specific fields out of it which are all at the same
offsets in both structs, so we can simply make the local variable the
correct type. This also lets us drop the cast (which should have
been a bit of a warning flag that we were doing something wrong
here).
We do however need to add extra casts for the fields of the
struct that are enums: clang will complain about the implicit
cast to a different enum type otherwise.
Cc: qemu-stable@nongnu.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
(cherry picked from commit 4ab9a7429bf7507fba4b96b97d4147628c91ba14)
Lu Gao [Mon, 21 Mar 2022 05:56:18 +0000 (13:56 +0800)]
hw/sd/sdhci: Block Size Register bits [14:12] is lost
Block Size Register bits [14:12] is SDMA Buffer Boundary, it is missed
in register write, but it is needed in SDMA transfer. e.g. it will be
used in sdhci_sdma_transfer_multi_blocks to calculate boundary_ variables.
Missing this field will cause wrong operation for different SDMA Buffer
Boundary settings.
Fixes: d7dfca0807 ("hw/sdhci: introduce standard SD host controller") Fixes: dfba99f17f ("hw/sdhci: Fix DMA Transfer Block Size field") Signed-off-by: Lu Gao <lu.gao@verisilicon.com> Signed-off-by: Jianxian Wen <jianxian.wen@verisilicon.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-ID: <20220321055618.4026-1-lu.gao@verisilicon.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
(cherry picked from commit ae5f70baf549925080fcdbc6c1939c98a4a39246) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Michal Orzel [Thu, 28 Sep 2023 09:44:04 +0000 (11:44 +0200)]
target/arm: Fix CNTPCT_EL0 trapping from EL0 when HCR_EL2.E2H is 0
On an attempt to access CNTPCT_EL0 from EL0 using a guest running on top
of Xen, a trap from EL2 was observed which is something not reproducible
on HW (also, Xen does not trap accesses to physical counter).
This is because gt_counter_access() checks for an incorrect bit (1
instead of 0) of CNTHCTL_EL2 if HCR_EL2.E2H is 0 and access is made to
physical counter. Refer ARM ARM DDI 0487J.a, D19.12.2:
When HCR_EL2.E2H is 0:
- EL1PCTEN, bit [0]: refers to physical counter
- EL1PCEN, bit [1]: refers to physical timer registers
Drop entire block "if (hcr & HCR_E2H) {...} else {...}" from EL0 case
and fall through to EL1 case, given that after fixing checking for the
correct bit, the handling is the same.
Fixes: 5bc8437136fb ("target/arm: Update timer access for VHE") Signed-off-by: Michal Orzel <michal.orzel@amd.com> Tested-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
Message-id: 20230928094404.20802-1-michal.orzel@amd.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
(cherry picked from commit d01448c79d89cfdc86228081b1dd1dfaf85fb4c3) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
sh4 uses gUSA (general UserSpace Atomicity) to provide atomicity on CPUs
that don't have atomic instructions. A gUSA region that adds 1 to an
atomic variable stored in @R2 looks like this:
R0 contains a pointer to the end of the gUSA region
R1 contains the saved stack pointer
R15 contains negative length of the gUSA region
When this region is interrupted by a signal, the kernel detects if
R15 >= -128U. If yes, the kernel rolls back PC to the beginning of the
region and restores SP by copying R1 to R15.
The problem happens if we are interrupted by a signal at address 4004c4.
R15 still holds the value -6, but the atomic value was already written by
an instruction at address 4004c2. In this situation we can't undo the
gUSA. The function unwind_gusa does nothing, the signal handler attempts
to push a signal frame to the address -6 and crashes.
This patch fixes it, so that if we are interrupted at the last instruction
in a gUSA region, we copy R1 to R15 to restore the correct stack pointer
and avoid crashing.
There's another bug: if we are interrupted in a delay slot, we save the
address of the instruction in the delay slot. We must save the address of
the previous instruction.
Cc: qemu-stable@nongnu.org Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Reviewed-by: Yoshinori Sato <ysato@users.sourcefoege.jp>
Message-Id: <b16389f7-6c62-70b7-59b3-87533c0bcc@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
(cherry picked from commit 3b894b699c9a9c064466e128c18be80a3f2113bc) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
QEMU mips userspace emulation crashes with "qemu: unhandled CPU exception
0x15 - aborting" when one of the integer arithmetic instructions detects
an overflow.
This patch fixes it so that it delivers SIGFPE with FPE_INTOVF instead.
Cc: qemu-stable@nongnu.org Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Message-Id: <3ef979a8-3ee1-eb2d-71f7-d788ff88dd11@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
(cherry picked from commit 6fad9b4bb91dcc824f9c00a36ee843883b58313b) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
The previous change, 2d385be6152, assumed !PAGE_VALID meant that
the page would be unmapped by the elf image. However, since we
reserved the entire image space via mmap, PAGE_VALID will always
be set. Instead, assume PROT_NONE for the same condition.
Furthermore, assume bss is only ever present for writable segments,
and that there is no page overlap between PT_LOAD segments.
Instead of an assert, return false to indicate failure.
Cc: qemu-stable@nongnu.org
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1854 Fixes: 2d385be6152 ("linux-user: Do not adjust zero_bss for host page size") Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
(cherry picked from commit e6e66b03287331abc6f184456dbc6d25505590ec) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Paolo Bonzini [Mon, 16 Oct 2023 06:22:56 +0000 (08:22 +0200)]
tracetool: avoid invalid escape in Python string
This is an error in Python 3.12; fix it by using a raw string literal.
Cc: qemu-stable@nongnu.org Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
(cherry picked from commit e6d8e5e6e366ab4c9ed7d8ed1572f98c6ad6a38e) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
projects / thirdparty / qemu.git / log
