Fix bitmap migration with dirty-bitmaps capability enabled and shared
storage. We should ignore IN_USE bitmaps in the image on target, when
migrating bitmaps through migration channel, see new comment below.
Fixes: 74da6b9435
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-id: 20191125125229.13531-2-vsementsov@virtuozzo.com
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
This tag contains two patches that I'd like to target for 4.2-rc3:
* A fix to the DT entry for the SiFive test finisher.
* A fix to the spike board's HTIF interface.
This passes "make check" and boots OE for me.
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Merge remote-tracking branch 'remotes/palmer/tags/riscv-for-master-4.2-rc3' into staging
RISC-V Patches for 4.2-rc3
This tag contains two patches that I'd like to target for 4.2-rc3:
* A fix to the DT entry for the SiFive test finisher.
* A fix to the spike board's HTIF interface.
This passes "make check" and boots OE for me.
# gpg: Signature made Mon 25 Nov 2019 20:51:13 GMT
# gpg: using RSA key 00CE76D1834960DFCE886DF8EF4CA1502CCBAB41
# gpg: issuer "palmer@dabbelt.com"
# gpg: Good signature from "Palmer Dabbelt <palmer@dabbelt.com>" [unknown]
# gpg: aka "Palmer Dabbelt <palmer@sifive.com>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 00CE 76D1 8349 60DF CE88 6DF8 EF4C A150 2CCB AB41
* remotes/palmer/tags/riscv-for-master-4.2-rc3:
hw/riscv: Add optional symbol callback ptr to riscv_load_kernel()
RISC-V: virt: This is a "sifive,test1" test finisher
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This patch adds an optional function pointer, "sym_cb", to
riscv_load_kernel() which provides the possibility to access the symbol
table during kernel loading.
The pointer is ignored, if supplied with Image or uImage file.
The Spike board requires the access to locate the HTIF symbols.
Fixes: 0ac24d56c5 ("hw/riscv: Split out the boot functions")
Buglink: https://bugs.launchpad.net/qemu/+bug/1835827
Signed-off-by: Siwei Zhuang <siwei.zhuang@data61.csiro.au>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
The test finisher implements the reset command, which means it's a
"sifive,test1" device. This is a backwards compatible change, so it's
also a "sifive,test0" device. I copied the odd idiom for adding a
two-string compatible field from the ARM virt board.
Fixes: 9a2551ed6f ("riscv: sifive_test: Add reset functionality")
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Version: GnuPG v1
iQEcBAABAgAGBQJd2/OwAAoJEO8Ells5jWIRE+AIAI428aJ1wov3CEOJHJEHeb9h
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Merge remote-tracking branch 'remotes/jasowang/tags/net-pull-request' into staging
# gpg: Signature made Mon 25 Nov 2019 15:30:56 GMT
# gpg: using RSA key EF04965B398D6211
# gpg: Good signature from "Jason Wang (Jason Wang on RedHat) <jasowang@redhat.com>" [marginal]
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 215D 46F4 8246 689E C77F 3562 EF04 965B 398D 6211
* remotes/jasowang/tags/net-pull-request:
net/virtio: return error when device_opts arg is NULL
net/virtio: fix re-plugging of primary device
net/virtio: return early when failover primary alread added
net/virtio: fix dev_unplug_pending
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This fixes CID 1407222.
Fixes: 9711cd0dfc ("net/virtio: add failover support")
Signed-off-by: Jens Freimann <jfreimann@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
failover_replug_primary was returning true on failure which lead to
re-plug not working when a migration failed. Fix this by returning
success when hotplug worked. This is a bug that was missed in last
round of testing but was tested succesfully with this version. Also
make sure we don't pass NULL to qdev_set_parent_bus().
This fixes CID 1407224.
Fixes: 9711cd0dfc ("net/virtio: add failover support")
Signed-off-by: Jens Freimann <jfreimann@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Bail out when primary device was already added before.
This avoids printing a wrong warning message during reboot.
Fixes: 9711cd0dfc ("net/virtio: add failover support")
Signed-off-by: Jens Freimann <jfreimann@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
.dev_unplug_pending is set up by virtio-net code indepent of failover
support was set for the device or not. This gives a wrong result when
we check for existing primary devices in migration code.
Fix this by actually calling dev_unplug_pending() instead of just
checking if the function pointer was set. When the feature was not
negotiated dev_unplug_pending() will always return false. This prevents
us from going into the wait-unplug state when there's no primary device
present.
Fixes: 9711cd0dfc ("net/virtio: add failover support")
Signed-off-by: Jens Freimann <jfreimann@redhat.com>
Reported-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
When dt is supported, TM field should not be Reserved(0).
Refer to VT-d Spec 9.8
Signed-off-by: Zhang, Qi <qi1.zhang@intel.com>
Signed-off-by: Qi, Yadong <yadong.qi@intel.com>
Message-Id: <20191125003321.5669-3-yadong.qi@intel.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
1. split the resevred fields arrays into two ones,
2. large page only effect for L2(2M) and L3(1G), so
remove checking of L1 and L4 for large page.
Signed-off-by: Zhang, Qi <qi1.zhang@intel.com>
Signed-off-by: Qi, Yadong <yadong.qi@intel.com>
Message-Id: <20191125003321.5669-2-yadong.qi@intel.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Spotted by ASAN + minor stylistic change.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20191121095649.25453-1-marcandre.lureau@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Clang does not like do_strtosz()'s code to guard against overflow:
qemu/util/cutils.c:245:23: error: implicit conversion from 'unsigned long' to 'double' changes value from 18446744073709550592 to 18446744073709551616 [-Werror,-Wimplicit-int-float-conversion]
The warning will be enabled by default in clang 10. It is not
available for clang <= 9.
val * mul >= 0xfffffffffffffc00 is indeed wrong. 0xfffffffffffffc00
is not representable exactly as double. It's half-way between the
representable values 0xfffffffffffff800 and 0x10000000000000000.
Which one we get is implementation-defined. Bad.
We want val * mul > (the largest uint64_t exactly representable as
double). That's 0xfffffffffffff800. Write it as nextafter(0x1p64, 0)
with a suitable comment.
Signed-off-by: Fangrui Song <i@maskray.me>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[Patch split, commit message improved]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20191122080039.12771-3-armbru@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Some filesystems may return 0s in statfs (trivially, a FUSE filesystem
can do so). QEMU should handle this gracefully and just behave the
same as if statfs failed.
Signed-off-by: Dan Schatzberg <dschatzberg@fb.com>
Acked-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Signed-off-by: Greg Kurz <groug@kaod.org>
* the big ugly list of x86 VMX features, which was targeted for 5.0 but
caused a Libvirt regression (myself)
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Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging
* x86 updates for Intel errata (myself, Eduardo)
* the big ugly list of x86 VMX features, which was targeted for 5.0 but
caused a Libvirt regression (myself)
# gpg: Signature made Thu 21 Nov 2019 15:35:13 GMT
# gpg: using RSA key BFFBD25F78C7AE83
# 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
* remotes/bonzini/tags/for-upstream:
i386: Add -noTSX aliases for hle=off, rtm=off CPU models
i386: Add new versions of Skylake/Cascadelake/Icelake without TSX
target/i386: add support for MSR_IA32_TSX_CTRL
target/i386: add VMX features to named CPU models
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
We have been trying to avoid adding new aliases for CPU model
versions, but in the case of changes in defaults introduced by
the TAA mitigation patches, the aliases might help avoid user
confusion when applying host software updates.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The MSR_IA32_TSX_CTRL MSR can be used to hide TSX (also known as the
Trusty Side-channel Extension). By virtualizing the MSR, KVM guests
can disable TSX and avoid paying the price of mitigating TSX-based
attacks on microarchitectural side channels.
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
- tweak DEBUG behaviour for vm-test-build
- rename and update plug docs for versioning
- slim down MAIN_SOFTMMU_TARGETS
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Merge remote-tracking branch 'remotes/stsquad/tags/pull-rc3-testing-and-tcg-201119-1' into staging
A few test and doc fixes:
- tweak DEBUG behaviour for vm-test-build
- rename and update plug docs for versioning
- slim down MAIN_SOFTMMU_TARGETS
# gpg: Signature made Wed 20 Nov 2019 10:56:23 GMT
# gpg: using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8 DF35 FBD0 DB09 5A9E 2A44
* remotes/stsquad/tags/pull-rc3-testing-and-tcg-201119-1:
tests/tcg: modify multiarch tests to work with clang
.travis.yml: drop 32 bit systems from MAIN_SOFTMMU_TARGETS
docs/devel: update tcg-plugins.rst with API versioning details
docs/devel: rename plugins.rst to tcg-plugins.rst
tests/vm: make --interactive (and therefore DEBUG=1) unconditional
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Fill the audio channel with required number of bytes to cover the
elapsed time. This prevents rate control reset, and avoids debug prints
like below
log:
Resetting rate control (65692 samples)
...
Resetting rate control (65721 samples)
...
Signed-off-by: Sai Pavan Boddu <sai.pavan.boddu@xilinx.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 1573833408-2388-1-git-send-email-sai.pavan.boddu@xilinx.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
The older clangs are still struggling to build and run everything
withing the 50 minute timeout so lets lighten the load a bit more. We
still have coverage for GCC and hopefully no obscure 32 bit guest only
breakages slip through the cracks.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
While we are at it fix up the quoted code sections with the inline ::
approach.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Robert Foley <robert.foley@linaro.org>
This makes it a bit clearer what this is about.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
While the concept of only dropping to ssh if a test fails is nice it
is more useful for this to be unconditional. You usually just want to
get the build up and running and then noodle around debugging or
attempting to replicate.
Cc: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
If IASL wasn't able to parse expected file, test will just
print warning
"Warning! iasl couldn't parse the expected aml\n"
and remove temporary table dumped from guest.
Typically expected tables are always valid, with an exception
when patchset introduces new tables.
Make sure dumped tables are retained even if expected files
are not valid, so one could have a chance to manualy check new
tables.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <1574240560-12538-1-git-send-email-imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The virtqueue element returned by vu_queue_pop() is allocated using
malloc(3) by virtqueue_alloc_element(). Use the matching free(3)
function instead of glib's g_free().
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20191119111626.112206-1-stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Use a zero-initialized VuVirtqInflightDesc struct to avoid
that scan-build reports that vq->resubmit_list[0].counter may
be garbage value in vu_check_queue_inflights().
Fixes: 5f9ff1eff ("libvhost-user: Support tracking inflight I/O in
shared memory")
Reported-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Xie Yongji <xieyongji@baidu.com>
Message-Id: <20191119075759.4334-1-xieyongji@baidu.com>
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>
With current code audio recording with all audio backends
except PulseAudio and DirectSound is broken. The generic audio
recording buffer management forgot to update the current read
position after a read.
Fixes: ff095e5231 "audio: api for mixeng code free backends"
Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Reviewed-by: Zoltán Kővágó <DirtY.iCE.hu@gmail.com>
Message-id: 2fc947cf-7b42-de68-3f11-cbcf1c096be9@t-online.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
format. We failed at noticing it for the 4.1 release, and LP#1844817
was opened to track it. Fix this regression for the next release.
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Merge remote-tracking branch 'remotes/philmd-gitlab/tags/mips-next-20191119' into staging
The DTrace via SystemTap backend can not support the dynamic '*' width
format. We failed at noticing it for the 4.1 release, and LP#1844817
was opened to track it. Fix this regression for the next release.
# gpg: Signature made Tue 19 Nov 2019 13:56:50 GMT
# gpg: using RSA key 89C1E78F601EE86C867495CBA2A3FD6EDEADC0DE
# gpg: Good signature from "Philippe Mathieu-Daudé (Phil) <philmd@redhat.com>" [marginal]
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 89C1 E78F 601E E86C 8674 95CB A2A3 FD6E DEAD C0DE
* remotes/philmd-gitlab/tags/mips-next-20191119:
hw/mips/gt64xxx: Remove dynamic field width from trace events
hw/block/pflash: Remove dynamic field width from trace events
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Since not all trace backends support dynamic field width in
format (dtrace via stap does not), replace by a static field
width instead.
We previously passed to the trace API 'width << 1' as the number
of hex characters to display (the dynamic field width). We don't
need this anymore. Instead, display the size of bytes accessed.
Fixes: ab6bff424f ("gt64xxx_pci: Convert debug printf to trace events")
Reported-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Buglink: https://bugs.launchpad.net/qemu/+bug/1844817
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Since not all trace backends support dynamic field width in
format (dtrace via stap does not), replace by a static field
width instead.
We previously passed to the trace API 'width << 1' as the number
of hex characters to display (the dynamic field width). We don't
need this anymore. Instead, display the size of bytes accessed.
Fixes: e8aa2d95ea ("pflash: Simplify trace_pflash_io_read/write")
Fixes: c1474acd5d ("pflash: Simplify trace_pflash_data_read/write")
Reported-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Buglink: https://bugs.launchpad.net/qemu/+bug/1844817
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
* Support EL0 v7m msr/mrs for CONFIG_USER_ONLY
* Relax r13 restriction for ldrex/strex for v8.0
* Do not reject rt == rt2 for strexd
* net/cadence_gem: Set PHY autonegotiation restart status
* ssi: xilinx_spips: Skip spi bus update for a few register writes
* pl031: Expose RTCICR as proper WC register
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Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20191119' into staging
target-arm queue:
* Support EL0 v7m msr/mrs for CONFIG_USER_ONLY
* Relax r13 restriction for ldrex/strex for v8.0
* Do not reject rt == rt2 for strexd
* net/cadence_gem: Set PHY autonegotiation restart status
* ssi: xilinx_spips: Skip spi bus update for a few register writes
* pl031: Expose RTCICR as proper WC register
# gpg: Signature made Tue 19 Nov 2019 13:30:35 GMT
# gpg: using RSA key E1A5C593CD419DE28E8315CF3C2525ED14360CDE
# gpg: issuer "peter.maydell@linaro.org"
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [ultimate]
# gpg: aka "Peter Maydell <pmaydell@gmail.com>" [ultimate]
# gpg: aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [ultimate]
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83 15CF 3C25 25ED 1436 0CDE
* remotes/pmaydell/tags/pull-target-arm-20191119:
target/arm: Support EL0 v7m msr/mrs for CONFIG_USER_ONLY
target/arm: Relax r13 restriction for ldrex/strex for v8.0
target/arm: Do not reject rt == rt2 for strexd
net/cadence_gem: Set PHY autonegotiation restart status
ssi: xilinx_spips: Skip spi bus update for a few register writes
target/arm: Merge arm_cpu_vq_map_next_smaller into sole caller
pl031: Expose RTCICR as proper WC register
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Simply moving the non-stub helper_v7m_mrs/msr outside of
!CONFIG_USER_ONLY is not an option, because of all of the
other system-mode helpers that are called.
But we can split out a few subroutines to handle the few
EL0 accessible registers without duplicating code.
Reported-by: Christophe Lyon <christophe.lyon@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191118194916.3670-1-richard.henderson@linaro.org
[PMM: deleted now-redundant comment; added a default case
to switch in v7m_msr helper]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Armv8-A removes UNPREDICTABLE for R13 for these cases.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191117090621.32425-3-richard.henderson@linaro.org
[PMM: changed ENABLE_ARCH_8 checks to check a new bool 'v8a',
since these cases are still UNPREDICTABLE for v8M]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
There was too much cut and paste between ldrexd and strexd,
as ldrexd does prohibit two output registers the same.
Fixes: af28822899
Reported-by: Michael Goffioul <michael.goffioul@gmail.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191117090621.32425-2-richard.henderson@linaro.org
Reviewed-by: Robert Foley <robert.foley@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The Linux kernel PHY driver sets AN_RESTART in the BMCR of the
PHY when autonegotiation is started.
Recently the kernel started to read back the PHY's AN_RESTART
bit and now checks whether the autonegotiation is complete and
the bit was cleared [1]. Otherwise the link status is down.
The emulated PHY needs to clear AN_RESTART immediately to inform
the kernel driver about the completion of autonegotiation phase.
[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c36757eb9dee
Signed-off-by: Linus Ziegert <linus.ziegert+qemu@holoplot.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20191104181604.21943-1-linus.ziegert+qemu@holoplot.com
Cc: qemu-stable@nongnu.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
A few configuration register writes need not update the spi bus state, so just
return after the register write.
Signed-off-by: Sai Pavan Boddu <sai.pavan.boddu@xilinx.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Francisco Iglesias <frasse.iglesias@gmail.com>
Tested-by: Francisco Iglesias <frasse.iglesias@gmail.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 1573830705-14579-1-git-send-email-sai.pavan.boddu@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Coverity reports, in sve_zcr_get_valid_len,
"Subtract operation overflows on operands
arm_cpu_vq_map_next_smaller(cpu, start_vq + 1U) and 1U"
First, the aarch32 stub version of arm_cpu_vq_map_next_smaller,
returning 0, does exactly what Coverity reports. Remove it.
Second, the aarch64 version of arm_cpu_vq_map_next_smaller has
a set of asserts, but they don't cover the case in question.
Further, there is a fair amount of extra arithmetic needed to
convert from the 0-based zcr register, to the 1-base vq form,
to the 0-based bitmap, and back again. This can be simplified
by leaving the value in the 0-based form.
Finally, use test_bit to simplify the common case, where the
length in the zcr registers is in fact a supported length.
Reported-by: Coverity (CID 1407217)
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Message-id: 20191118091414.19440-1-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The current PL031 RTCICR register implementation always clears the
IRQ pending status on a register write, regardless of the value the
guest writes.
To justify that behavior, it references the ARM926EJ-S Development
Chip Reference Manual (DDI0287B) and indicates that said document
states that any write clears the internal IRQ state. It is indeed
true that in section 11.1 this document says:
"The interrupt is cleared by writing any data value to the
interrupt clear register RTCICR".
However, later in section 11.2.2 it contradicts itself by saying:
"Writing 1 to bit 0 of RTCICR clears the RTCINTR flag."
The latter statement matches the PL031 TRM (DDI0224C), which says:
"Writing 1 to bit position 0 clears the corresponding interrupt.
Writing 0 has no effect."
Let's assume that the self-contradictory DDI0287B is in error, and
follow the reference manual for the device itself, by making the
register write-one-to-clear.
Reported-by: Hendrik Borghorst <hborghor@amazon.de>
Signed-off-by: Alexander Graf <graf@amazon.com>
Message-id: 20191104115228.30745-1-graf@amazon.com
[PMM: updated commit message to note that DDI0287B says two
conflicting things]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
