Passing fixed-iothread=true should make iothread conflicts fatal,
whereas fixed-iothread=false should not.
Combine the second case with an error condition that is checked after
the iothread is handled, to verify that qemu does not crash if there is
such an error after changing the iothread failed.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210624083825.29224-3-mreitz@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Tested-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
When invoking block-export-add with some iothread and
fixed-iothread=false, and changing the node's iothread fails, the error
is supposed to be ignored.
However, it is still stored in *errp, which is wrong. If a second error
occurs, the "*errp must be NULL" assertion in error_setv() fails:
qemu-system-x86_64: ../util/error.c:59: error_setv: Assertion
`*errp == NULL' failed.
So if fixed-iothread=false, we should ignore the error by passing NULL
to bdrv_try_set_aio_context().
Fixes: f51d23c80a
("block/export: add iothread and fixed-iothread options")
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210624083825.29224-2-mreitz@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Most probably this fake backing child doesn't work anyway (see notes
about it in a8a4d15c1c).
Still, since 25f78d9e2d drivers are required to set
.supports_backing if they want to call bdrv_set_backing_hd, so now
vvfat just doesn't work because of this check.
Let's finally drop this fake backing file.
Fixes: 25f78d9e2d
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210715124853.13335-1-vsementsov@virtuozzo.com>
Tested-by: John Arbuckle <programmingkidx@gmail.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Remove the workaround introduced in commit
6ecbc6c526
"replication: Avoid blk_make_empty() on read-only child".
It is not needed anymore since s->hidden_disk is guaranteed to be
writable when secondary_do_checkpoint() runs. Because replication_start(),
_do_checkpoint() and _stop() are only called by COLO migration code
and COLO-migration activates all disks via bdrv_invalidate_cache_all()
before it calls these functions.
Signed-off-by: Lukas Straub <lukasstraub2@web.de>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <d3acfad43879e9f376bffa7dd797ae74d0a7c81a.1626619393.git.lukasstraub2@web.de>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
The replication driver needs access to the children block-nodes of
it's child so it can issue bdrv_make_empty() and bdrv_co_pwritev()
to manage the replication. However, it does this by directly copying
the BdrvChilds, which is wrong.
Fix this by properly attaching the block-nodes with
bdrv_attach_child() and requesting the required permissions.
This ultimatively fixes a potential crash in replication_co_writev(),
because it may write to s->secondary_disk if it is in state
BLOCK_REPLICATION_FAILOVER_FAILED, without requesting write
permissions first. And now the workaround in
secondary_do_checkpoint() can be removed.
Signed-off-by: Lukas Straub <lukasstraub2@web.de>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <5d0539d729afb8072d0d7cde977c5066285591b4.1626619393.git.lukasstraub2@web.de>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
In preparation for the next patch, initialize s->hidden_disk and
s->secondary_disk later and replace access to them with local variables
in the places where they aren't initialized yet.
Signed-off-by: Lukas Straub <lukasstraub2@web.de>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <1eb9dc179267207d9c7eccaeb30761758e32e9ab.1626619393.git.lukasstraub2@web.de>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
s->active_disk is bs->file. Remove it and use local variables instead.
Signed-off-by: Lukas Straub <lukasstraub2@web.de>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <2534f867ea9be5b666dfce19744b7d4e2b96c976.1626619393.git.lukasstraub2@web.de>
Reviewed-by: Zhang Chen <chen.zhang@intel.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Currently, the block driver whitelists are only applied for the system
emulator. All other binaries still give unrestricted access to all block
drivers. There are use cases where this made sense because the main
concern was avoiding customers running VMs on less optimised block
drivers and getting bad performance. Allowing the same image format e.g.
as a target for 'qemu-img convert' is not a problem then.
However, if the concern is the supportability of the driver in general,
either in full or when used read-write, not applying the list driver
whitelist in tools doesn't help - especially since qemu-nbd and
qemu-storage-daemon now give access to more or less the same operations
in block drivers as running a system emulator.
In order to address this, introduce a new configure option that enforces
the driver whitelist in all binaries.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20210709164141.254097-1-kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
It's possible that requests start to wait each other in
mirror_wait_on_conflicts(). To avoid it let's use same technique as in
block/io.c in bdrv_wait_serialising_requests_locked() /
bdrv_find_conflicting_request(): don't wait on intersecting request if
it is already waiting for some other request.
For details of the dead-lock look at testIntersectingActiveIO()
test-case which we actually fixing now.
Fixes: d06107ade0
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210702211636.228981-4-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
There is a dead-lock in active mirror: when we have parallel
intersecting requests (note that non intersecting requests may be
considered intersecting after aligning to mirror granularity), it may
happen that request A waits request B in mirror_wait_on_conflicts() and
request B waits for A.
Look at the test for details. Test now dead-locks, that's why it's
disabled. Next commit will fix mirror and enable the test.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210702211636.228981-3-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This field is unused, but it very helpful for debugging.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210702211636.228981-2-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
First, categorize the structure fields to identify what needs
to be protected and what doesn't.
We essentially need to protect only .state, and the 3 lists in
BDRVBlkdebugState.
Then, add the lock and mark the functions accordingly.
Co-developed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Message-Id: <20210614082931.24925-7-eesposit@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
There seems to be no benefit in using a field. Replace it with a local
variable, and move the state update before the yields.
The state update has do be done before the yields because now using
a local variable does not allow the new updated state to be visible
by the other yields.
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Message-Id: <20210614082931.24925-6-eesposit@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
That would be unsafe in case a rule other than the current one
is removed while the coroutine has yielded.
Keep FOREACH_SAFE because suspend_request deletes the current rule.
After this patch, *all* matching rules are deleted before suspending
the coroutine, rather than just one.
This doesn't affect the existing testcases.
Use actions_count to see how many yield to issue.
Co-developed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210614082931.24925-5-eesposit@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Add a counter for each action that a rule can trigger.
This is mainly used to keep track of how many coroutine_yield()
we need to perform after processing all rules in the list.
Co-developed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210614082931.24925-4-eesposit@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
We want to move qemu_coroutine_yield() after the loop on rules,
because QLIST_FOREACH_SAFE is wrong if the rule list is modified
while the coroutine has yielded. Therefore move the suspended
request to the heap and clean it up from the remove side.
All that is left is for blkdebug_debug_event to handle the
yielding.
Co-developed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210614082931.24925-3-eesposit@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Extract to a separate function. Do not rely on FOREACH_SAFE, which is
only "safe" if the *current* node is removed---not if another node is
removed. Instead, just walk the entire list from the beginning when
asked to resume all suspended requests with a given tag.
Co-developed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20210614082931.24925-2-eesposit@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
- Fix endianess detection problem with LTO in "configure"
- Fix two abort()s in the vmxnet code
- Fix crash with x-remote machine and IDE devices
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Merge remote-tracking branch 'remotes/thuth-gitlab/tags/pull-request-2021-07-19' into staging
- Compile-test the Windows installer in the Gitlab-CI
- Fix endianess detection problem with LTO in "configure"
- Fix two abort()s in the vmxnet code
- Fix crash with x-remote machine and IDE devices
# gpg: Signature made Mon 19 Jul 2021 10:47:12 BST
# gpg: using RSA key 27B88847EEE0250118F3EAB92ED9D774FE702DB5
# gpg: issuer "thuth@redhat.com"
# gpg: Good signature from "Thomas Huth <th.huth@gmx.de>" [full]
# gpg: aka "Thomas Huth <thuth@redhat.com>" [full]
# gpg: aka "Thomas Huth <huth@tuxfamily.org>" [full]
# gpg: aka "Thomas Huth <th.huth@posteo.de>" [unknown]
# Primary key fingerprint: 27B8 8847 EEE0 2501 18F3 EAB9 2ED9 D774 FE70 2DB5
* remotes/thuth-gitlab/tags/pull-request-2021-07-19:
hw/ide: Fix crash when plugging a piix3-ide device into the x-remote machine
hw/net/net_tx_pkt: Fix crash detected by fuzzer
hw/net/vmxnet3: Do not abort if the guest is trying to use an invalid TX queue
configure: Fix endianess test with LTO
ci: build & store windows installer
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
QEMU currently crashes when the user tries to do something like:
qemu-system-x86_64 -M x-remote -device piix3-ide
This happens because the "isabus" variable is not initialized with
the x-remote machine yet. Add a proper check for this condition
and propagate the error to the caller, so we can fail there gracefully.
Message-Id: <20210416125256.2039734-1-thuth@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
QEMU currently crashes when it's started like this:
cat << EOF | ./qemu-system-i386 -device vmxnet3 -nodefaults -qtest stdio
outl 0xcf8 0x80001014
outl 0xcfc 0xe0001000
outl 0xcf8 0x80001018
outl 0xcf8 0x80001004
outw 0xcfc 0x7
outl 0xcf8 0x80001083
write 0x0 0x1 0xe1
write 0x1 0x1 0xfe
write 0x2 0x1 0xbe
write 0x3 0x1 0xba
writeq 0xe0001020 0xefefff5ecafe0000
writeq 0xe0001020 0xffff5e5ccafe0002
EOF
It hits this assertion:
qemu-system-i386: ../qemu/hw/net/net_tx_pkt.c:453: net_tx_pkt_reset:
Assertion `pkt->raw' failed.
This happens because net_tx_pkt_init() is called with max_frags == 0 and
thus the allocation
p->raw = g_new(struct iovec, max_frags);
results in a NULL pointer that causes the
assert(pkt->raw);
in net_tx_pkt_reset() to fail later. To fix this issue we can check
that max_raw_frags was not zero before asserting that pkt->raw is
a non-NULL pointer.
Buglink: https://bugs.launchpad.net/qemu/+bug/1890157
Message-Id: <20210715193219.1132571-1-thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Pankaj Gupta <pankaj.gupta@ionos.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
QEMU should never abort just because the guest is doing something odd.
Let's simply log the error and ignore the bad transmit queue instead.
Buglink: https://bugs.launchpad.net/qemu/+bug/1926111
Message-Id: <20210715103755.1035566-1-thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
If a user is trying to compile QEMU with link-time optimization
enabled by running the configure script like this:
.../configure --extra-cflags="-flto"
then the endianess test is failing since the magic values do not
show up in the intermediate object files there. If the host is
a big endian machine (like s390x), the QEMU binary is then unusable
since the corresponding variable "bigendian" is pre-initialized
with "no".
To fix this issue, we should rather create a full binary and look
for the magic strings there instead.
And we really should not continue the build if the endianess check
failed, to make it clear right from the start that something went
wrong here, thus let's also add some "exit 1" statements here
after emitting the error message.
Message-Id: <20210715083928.933806-1-thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Build windows installer for qemu in gitlab CI,
store the result as artifact.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20210623091137.1156959-2-kraxel@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
* Remove duplicate 'plus1' function from Neon and SVE decode
* Fix offsets for TTBCR for big-endian hosts
* docs: fix copyright date
* docs: add license/version info to HTML footers
* docs: add an About section
* docs: document some more arm boards
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Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20210718' into staging
target-arm queue:
* Remove duplicate 'plus1' function from Neon and SVE decode
* Fix offsets for TTBCR for big-endian hosts
* docs: fix copyright date
* docs: add license/version info to HTML footers
* docs: add an About section
* docs: document some more arm boards
# gpg: Signature made Sun 18 Jul 2021 13:45:22 BST
# 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-20210718:
target/arm: Remove duplicate 'plus1' function from Neon and SVE decode
docs: Add skeletal documentation of highbank and midway
docs: Add skeletal documentation of the emcraft-sf2
docs: Add skeletal documentation of cubieboard
docs: Add QEMU version information to HTML footer
docs: Add license note to the HTML page footer
docs: Add some actual About text to about/index.rst
docs: Move deprecation, build and license info out of system/
docs: Remove "Contents:" lines from top-level subsections
docs: Stop calling the top level subsections of our manual 'manuals'
docs: Fix documentation Copyright date
target/arm: Fix offsets for TTBCR
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The Neon and SVE decoders use private 'plus1' functions to implement
"add one" for the !function decoder syntax. We have a generic
"plus_1" function in translate.h, so use that instead.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20210715095341.701-1-peter.maydell@linaro.org
Add skeletal documentation for the highbank and midway machines.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20210713142226.19155-4-peter.maydell@linaro.org
Add skeletal documentation of the emcraft-sf2 machine.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20210713142226.19155-3-peter.maydell@linaro.org
Add skeletal documentation of the cubieboard machine.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20210713142226.19155-2-peter.maydell@linaro.org
Add a line to the HTML document footer mentioning the QEMU version.
The version information is already provided in very faint text below
the QEMU logo in the sidebar, but that is rather inconspicious, so
repeating it in the footer seems useful.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-id: 20210705095547.15790-8-peter.maydell@linaro.org
The standard Sphinx/RTD HTML page footer gives a copyright line
(based on the 'copyright' variable set in conf.py) and a line "Built
with Sphinx using a theme provided by Read the Docs" (which can be
disabled via the html_show_sphinx variable, but we leave it enabled).
As a free software project, we'd like to also mention the license
QEMU and its manual are released under.
Add a template footer.html which defines the 'extrafooter' block that
the RtD theme provides for this purpose. The new line of text will
go below the existing copyright and sphinx-acknowledgement lines.
(Unfortunately the RTD footer template does not permit putting it
after the copyright but before the sphinx-acknowledgement.)
We use the templating functionality to make the new text also be a
hyperlink to the about/license.html page of the manual.
Unlike rst files, HTML template files are not reported to our depfile
plugin, so we maintain a manual list in meson.build. New template
files should be rare, so not being able to auto-generate the
dependency info is not too awkward.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-id: 20210705095547.15790-7-peter.maydell@linaro.org
Add some text to About to act as a brief introduction to the QEMU
manual and to make the about page a bit less of an abrupt start to
it.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-id: 20210705095547.15790-6-peter.maydell@linaro.org
Now that we have a single Sphinx manual rather than multiple manuals,
we can provide a better place for "common to all of QEMU" information
like the deprecation notices, build platforms, license information,
which we currently have in the system/ manual even though it applies
to all of QEMU.
Create a new directory about/ on the same level as system/, user/,
etc, and move these documents there.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-id: 20210705095547.15790-5-peter.maydell@linaro.org
Since the top-level subsections aren't self-contained manuals
any more, the "Contents:" lines at the top of each of their
index pages look a bit odd; remove them.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-id: 20210705095547.15790-4-peter.maydell@linaro.org
We merged our previous multiple-manual setup into a single Sphinx
manual, but we left some text in the various index.rst lines that
still calls the top level subsections separate 'manuals'. Update
them to talk about "this section of the manual" instead, and remove
now-obsolete comments about how the index.rst files are the "top
level page for the 'foo' manual".
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-id: 20210705095547.15790-3-peter.maydell@linaro.org
In commit 6d8980a38f we updated the copyright string we present to
the user in -version output, About dialogs, etc, but we forgot that
the Sphinx manuals have a separate copyright string setting. Update
that one too.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-id: 20210705095547.15790-2-peter.maydell@linaro.org
The functions vmsa_ttbcr_write and vmsa_ttbcr_raw_write expect
the offset to be for the complete TCR structure, not the offset
to the low 32-bits of a uint64_t. Using offsetoflow32 in this
case breaks big-endian hosts.
For TTBCR2, we do want the high 32-bits of a uint64_t.
Use cp15.tcr_el[*].raw_tcr as the offsetofhigh32 argument to
clarify this.
Buglink: https://gitlab.com/qemu-project/qemu/-/issues/187
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210709230621.938821-2-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Lots of last minute stuff.
vhost-user-i2c.
vhost-vsock SOCK_SEQPACKET support.
IOMMU bypass.
ACPI based pci hotplug.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge remote-tracking branch 'remotes/mst/tags/for_upstream3' into staging
pc,pci,virtio: lots of new features
Lots of last minute stuff.
vhost-user-i2c.
vhost-vsock SOCK_SEQPACKET support.
IOMMU bypass.
ACPI based pci hotplug.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Fri 16 Jul 2021 16:11:27 BST
# gpg: using RSA key 5D09FD0871C8F85B94CA8A0D281F0DB8D28D5469
# gpg: issuer "mst@redhat.com"
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [full]
# gpg: aka "Michael S. Tsirkin <mst@redhat.com>" [full]
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17 0970 C350 3912 AFBE 8E67
# Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA 8A0D 281F 0DB8 D28D 5469
* remotes/mst/tags/for_upstream3:
vhost-vsock: SOCK_SEQPACKET feature bit support
docs: Add documentation for iommu bypass
hw/i386/acpi-build: Add IVRS support to bypass iommu
hw/i386/acpi-build: Add DMAR support to bypass iommu
hw/arm/virt-acpi-build: Add IORT support to bypass SMMUv3
hw/pci: Add pci_bus_range() to get PCI bus number range
hw/i386: Add a default_bus_bypass_iommu pc machine option
hw/arm/virt: Add default_bus_bypass_iommu machine option
hw/pxb: Add a bypass iommu property
hw/pci/pci_host: Allow PCI host to bypass iommu
docs: Add '-device intel-iommu' entry
hw/virtio: add vhost-user-i2c-pci boilerplate
hw/virtio: add boilerplate for vhost-user-i2c device
bios-tables-test: Update golden binaries
hw/acpi/ich9: Set ACPI PCI hot-plug as default on Q35
bios-tables-test: Allow changes in DSDT ACPI tables
hw/pci/pcie: Do not set HPC flag if acpihp is used
hw/acpi/ich9: Enable ACPI PCI hot-plug
hw/i386/acpi-build: Add ACPI PCI hot-plug methods to Q35
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This adds processing of VIRTIO_VSOCK_F_SEQPACKET features bit. Guest
negotiates it with vhost, thus both will know that SOCK_SEQPACKET
supported by peer.
Signed-off-by: Arseny Krasnov <arseny.krasnov@kaspersky.com>
Message-Id: <20210622144747.2949134-1-arseny.krasnov@kaspersky.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Xingang Wang <wangxingang5@huawei.com>
Message-Id: <1625748919-52456-10-git-send-email-wangxingang5@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Check bypass_iommu to exclude the devices which will bypass iommu.
Signed-off-by: Xingang Wang <wangxingang5@huawei.com>
Message-Id: <1625748919-52456-9-git-send-email-wangxingang5@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
In DMAR table, the drhd is set to cover all PCI devices when intel_iommu
is on. To support bypass iommu feature, we need to walk the PCI bus with
bypass_iommu disabled and add explicit scope data in DMAR drhd structure.
/mnt/sdb/wxg/qemu-next/qemu/build/x86_64-softmmu/qemu-system-x86_64 \
-machine q35,accel=kvm,default_bus_bypass_iommu=true \
-cpu host \
-m 16G \
-smp 36,sockets=2,cores=18,threads=1 \
-device pxb-pcie,bus_nr=0x10,id=pci.10,bus=pcie.0,addr=0x3 \
-device pxb-pcie,bus_nr=0x20,id=pci.20,bus=pcie.0,addr=0x4,bypass_iommu=true \
-device pcie-root-port,port=0x1,chassis=1,id=pci.11,bus=pci.10,addr=0x0 \
-device pcie-root-port,port=0x2,chassis=2,id=pci.21,bus=pci.20,addr=0x0 \
-device virtio-scsi-pci,id=scsi0,bus=pci.11,addr=0x0 \
-device virtio-scsi-pci,id=scsi1,bus=pci.21,addr=0x0 \
-drive file=/mnt/sdb/wxg/fedora-48g.qcow2,format=qcow2,if=none,id=drive-scsi0-0-0-0,cache=none,aio=native \
-device scsi-hd,bus=scsi1.0,channel=0,scsi-id=0,lun=0,drive=drive-scsi0-0-0-0,id=scsi0-0-0-0,bootindex=1 \
-device intel-iommu \
-nographic \
And we get the guest configuration:
~ lspci -vt
-+-[0000:20]---00.0-[21]----00.0 Red Hat, Inc. Virtio SCSI
+-[0000:10]---00.0-[11]----00.0 Red Hat, Inc. Virtio SCSI
\-[0000:00]-+-00.0 Intel Corporation 82G33/G31/P35/P31 Express DRAM Controller
+-01.0 Device 1234:1111
+-02.0 Intel Corporation 82574L Gigabit Network Connection
+-03.0 Red Hat, Inc. QEMU PCIe Expander bridge
+-04.0 Red Hat, Inc. QEMU PCIe Expander bridge
+-1f.0 Intel Corporation 82801IB (ICH9) LPC Interface Controller
+-1f.2 Intel Corporation 82801IR/IO/IH (ICH9R/DO/DH) 6 port SATA Controller [AHCI mode]
\-1f.3 Intel Corporation 82801I (ICH9 Family) SMBus Controller
With bypass_iommu enabled on root bus, the attached devices will bypass iommu:
/sys/class/iommu/dmar0
├── devices
│ ├── 0000:10:00.0 -> ../../../../pci0000:10/0000:10:00.0
│ └── 0000:11:00.0 -> ../../../../pci0000:10/0000:10:00.0/0000:11:00.0
Signed-off-by: Xingang Wang <wangxingang5@huawei.com>
Message-Id: <1625748919-52456-8-git-send-email-wangxingang5@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
When we build IORT table with SMMUv3 and bypass iommu feature enabled,
we can no longer setup one map from RC to SMMUv3 covering the whole RIDs.
We need to walk the PCI bus and check whether the root bus will bypass
iommu, setup RC -> SMMUv3 -> ITS map for RC which will not bypass iommu.
When a SMMUv3 node exist, we setup the idmap from SMMUv3 to ITS
covering the whole RIDs, and only modify the map from RC to SMMUv3.
We build RC -> SMMUv3 -> ITS map for root bus with bypass_iommu
disabled, and build idmap from RC to ITS directly for the rest of
the whole RID space.
For example we run qemu with command line:
qemu/build/aarch64-softmmu/qemu-system-aarch64 \
-kernel arch/arm64/boot/Image \
-enable-kvm \
-cpu host \
-m 8G \
-smp 8,sockets=2,cores=4,threads=1 \
-machine virt,kernel_irqchip=on,gic-version=3,iommu=smmuv3,default_bus_bypass_iommu=true \
-drive file=./QEMU_EFI-pflash.raw,if=pflash,format=raw,unit=0,readonly=on \
-device pxb-pcie,bus_nr=0x10,id=pci.10,bus=pcie.0,addr=0x3.0x1 \
-device pxb-pcie,bus_nr=0x20,id=pci.20,bus=pcie.0,addr=0x3.0x2,bypass_iommu=true \
-device pcie-root-port,port=0x20,chassis=1,id=pci.1,bus=pcie.0,addr=0x2 \
-device pcie-root-port,port=0x20,chassis=11,id=pci.11,bus=pci.10,addr=0x1 \
-device pcie-root-port,port=0x20,chassis=21,id=pci.21,bus=pci.20,addr=0x1 \
-device virtio-scsi-pci,id=scsi0,bus=pci.1,addr=0x1 \
-device virtio-scsi-pci,id=scsi1,bus=pci.11,addr=0x1 \
-device virtio-scsi-pci,id=scsi2,bus=pci.21,addr=0x1 \
-initrd /mnt/davinci/wxg/kill-linux/rootfs/mfs.cpio.gz \
-nographic \
-append "rdinit=init console=ttyAMA0 earlycon=pl011,0x9000000 nokaslr" \
And we get guest configuration:
-+-[0000:20]---01.0-[21]--
+-[0000:10]---01.0-[11]--
\-[0000:00]-+-00.0 Device 1b36:0008
+-01.0 Device 1af4:1000
\-02.0-[01]--
With bypass_iommu enabled, the attached devices will bypass iommu.
/sys/class/iommu/smmu3.0x0000000009050000/
|-- device -> ../../../arm-smmu-v3.0.auto
|-- devices
| `-- 0000:10:01.0 -> ../../../../../pci0000:10/0000:10:01.0
Signed-off-by: Xingang Wang <wangxingang5@huawei.com>
Message-Id: <1625748919-52456-7-git-send-email-wangxingang5@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This helps to get the min and max bus number of a PCI bus hierarchy.
Signed-off-by: Xingang Wang <wangxingang5@huawei.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Message-Id: <1625748919-52456-6-git-send-email-wangxingang5@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Add a default_bus_bypass_iommu pc machine option to enable/disable
bypass_iommu for default root bus. The option is disabled by default
and can be enabled with:
$QEMU -machine q35,default_bus_bypass_iommu=true
Signed-off-by: Xingang Wang <wangxingang5@huawei.com>
Message-Id: <1625748919-52456-5-git-send-email-wangxingang5@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Add a default_bus_bypass_iommu machine option to enable/disable
bypass_iommu for default root bus. The option is disabled by
default and can be enabled with:
$QEMU -machine virt,iommu=smmuv3,default_bus_bypass_iommu=true
Signed-off-by: Xingang Wang <wangxingang5@huawei.com>
Message-Id: <1625748919-52456-4-git-send-email-wangxingang5@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Add a bypass_iommu property for pci_expander_bridge, the property
is used to indicate whether pxb root bus will bypass iommu. By
default the bypass_iommu is disabled, and it can be enabled with:
qemu -device pxb-pcie,bus_nr=0x10,addr=0x1,bypass_iommu=true
Signed-off-by: Xingang Wang <wangxingang5@huawei.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Message-Id: <1625748919-52456-3-git-send-email-wangxingang5@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Add a new bypass_iommu property for PCI host and use it to check
whether devices attached to the PCI root bus will bypass iommu.
In pci_device_iommu_address_space(), check the property and
avoid getting iommu address space for devices bypass iommu.
Signed-off-by: Xingang Wang <wangxingang5@huawei.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Message-Id: <1625748919-52456-2-git-send-email-wangxingang5@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The parameters of intel-iommu device are non-trivial to understand. Add an
entry for it so that people can reference to it when using.
There're actually a few more options there, but I hide them explicitly because
they shouldn't be used by normal QEMU users.
Cc: Chao Yang <chayang@redhat.com>
Cc: Lei Yang <leiyang@redhat.com>
Cc: Jing Zhao <jinzhao@redhat.com>
Cc: Jason Wang <jasowang@redhat.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Alex Williamson <alex.williamson@redhat.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Yi Liu <yi.l.liu@intel.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20210707154114.197580-1-peterx@redhat.com>
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
