Commit Graph

101944 Commits

Author SHA1 Message Date
Alex Bennée
789bc54117 tests/docker: use direct RUNC call to run test jobs
If we build them without the script we can certainly run them without
it.

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20230228190653.1602033-22-alex.bennee@linaro.org>
2023-03-01 12:45:11 +00:00
Alex Bennée
0b1a649047 tests/docker: use direct RUNC call to build containers
We don't really need stuff from docker.py to do the build as we have
everything we need with a direct call. We do rely on the dockerfiles
being able to tweak the UID/name mapping as the last step.

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20230228190653.1602033-21-alex.bennee@linaro.org>
2023-03-01 12:45:11 +00:00
Alex Bennée
93bd2954f4 tests/docker: add USER stanzas to non-lci images
These are flat but not generated by lcitool so we need to manually
update them with the `useradd` stanza.

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20230228190653.1602033-20-alex.bennee@linaro.org>
2023-03-01 12:45:11 +00:00
Alex Bennée
5b8bcf6b6c tests/lcitool: append user setting stanza to dockerfiles
For the cross-compilation use-case it is important to add the host
user to the dockerfile so we can map them to the docker environment
when cross-building files.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20230228190653.1602033-19-alex.bennee@linaro.org>
2023-03-01 12:45:11 +00:00
Alex Bennée
60f999b7f2 configure: expose the direct container command
In the process of migrating away from using docker.py to build our
containers we need to expose the command to the build environment. The
script is still a useful way to probe which command works though.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20230228190653.1602033-18-alex.bennee@linaro.org>
2023-03-01 12:45:11 +00:00
Richard W.M. Jones
ae4b01b349 tests: Ensure TAP version is printed before other messages
These two tests were failing with this error:

  stderr:
  TAP parsing error: version number must be on the first line
  [...]
  Unknown TAP version. The first line MUST be `TAP version <int>`. Assuming version 12.

This can be fixed by ensuring we always call g_test_init first in the
body of main.

Thanks: Daniel Berrange, for diagnosing the problem
Signed-off-by: Richard W.M. Jones <rjones@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Alexander Bulekov <alxndr@bu.edu>
Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
Message-Id: <20230227174019.1164205-1-rjones@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20230228190653.1602033-17-alex.bennee@linaro.org>
2023-03-01 12:45:03 +00:00
Juan Quintela
d31d240479 Makefile: qemu-bundle is a directory
So make distclean should remove it with -rf, not -f alone.

It has been that way since it was included.

ommit cf60ccc330
Author: Akihiko Odaki <akihiko.odaki@gmail.com>
Date:   Fri Jun 24 23:50:37 2022 +0900

    cutils: Introduce bundle mechanism

Fixes: cf60ccc330

Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20230301111910.1660-1-quintela@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-03-01 13:08:20 +01:00
Peter Krempa
b97f3147b0 qapi: Add 'acpi' field to 'query-machines' output
Report which machine types support ACPI so that management applications
can properly use the 'acpi' property even on platforms such as ARM where
support for ACPI depends on the machine type and thus checking presence
of '-machine acpi=' in 'query-command-line-options' is insufficient.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <537625d3e25d345052322c42ca19812b98b4f49a.1677571792.git.pkrempa@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-03-01 11:36:53 +01:00
Fabiano Rosas
94b8b146df gitlab: Use plain docker in container-template.yml
Our dockerfiles no longer reference layers from other qemu images so
we can now use 'docker build' on them.

Also reinstate the caching that was disabled due to bad interactions
with certain runners. See commit 6ddc3dc7a8 ("tests/docker: don't use
BUILDKIT in GitLab either"). We now believe those issues to be fixed.

The COMMON_TAG needed to be fixed for the caching to work. The
docker.py script was not using the variable, but constructing the
correct URL directly.

Signed-off-by: Fabiano Rosas <farosas@suse.de>
Tested-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20230227151110.31455-2-farosas@suse.de>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20230228190653.1602033-16-alex.bennee@linaro.org>
2023-03-01 10:32:25 +00:00
Alex Bennée
483c3b17ae tests/dockerfiles: unify debian-toolchain references
We use the debian release number elsewhere so fix it for consistency
along with the broken comment.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20230228190653.1602033-15-alex.bennee@linaro.org>
2023-03-01 10:32:25 +00:00
Thomas Huth
78e38f59fa cirrus.yml: Improve the windows_msys2_task
There's no need to run a full-blown bash just to create a directory.
And we can skip the "cd build" each time by doing it once at the
beginning.

Additionally, let's exclude some targets (that we already compile-test
with MinGW in the gitlab jobs) from the build, since the build time of
this task is very long already (between 80 and 90 minutes).

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20230208103046.618154-1-thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230228190653.1602033-14-alex.bennee@linaro.org>
2023-03-01 10:32:20 +00:00
Alex Bennée
1ea5e0b05e tests: ensure we export job results for some cross builds
We do run tests on some cross builds. Provide a template to ensure we
export the testlog to the build artefacts and report the test results
via the junit.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20230228190653.1602033-13-alex.bennee@linaro.org>
2023-03-01 10:32:16 +00:00
Bastian Koppelmann
3c471b0701 tests/docker: Use binaries for debian-tricore-cross
since binutils is pretty old, it fails our CI repeatedly during the
compilation of tricore-binutils. We created a precompiled version using
the debian docker image and download it instead of building it ourself.

We also updated the package to include a newer version of binutils, gcc,
and newlib. The default TriCore ISA version used by tricore-as changed
from the old version, so we have to specify it now. If we don't
'test_fadd' fails with 'unknown opcode'.

The new assembler also picks a new encoding in ld.h which fails the
'test_ld_h' test. We fix that by using the newest TriCore CPU for QEMU.

The old assembler accepted an extra ')' in 'test_imask'. The new one
does not, so lets remove it.

Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Message-Id: <20230209145812.46730-1-kbastian@mail.uni-paderborn.de>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20230228190653.1602033-12-alex.bennee@linaro.org>
2023-03-01 10:32:09 +00:00
Alex Bennée
267fe57c23 tests: add tuxrun baseline test to avocado
The TuxRun project (www.tuxrun.org) uses QEMU to run tests on a wide
variety of kernel configurations on wide range of our emulated
platforms. They publish a known good set of images at:

  https://storage.tuxboot.com/

to help with bisecting regressions in either the kernel, firmware or
QEMU itself. The tests are pretty lightweight as they contain just a
kernel with a minimal rootfs which boots a lot faster than most of the
distros. In time they might be persuaded to version their known good
baselines and we can then enable proper checksums.

For a couple of tests we currently skip:

  - mips64, a regression against previous stable release
  - sh4, very unstable with intermittent oops

Total run time: 340s (default) -> 890s (debug)

Overall coverage rate (tested targets + disabled tests):
  lines......: 16.1% (126894 of 789848 lines)
  functions..: 20.6% (15954 of 77489 functions)
  branches...: 9.3% (40727 of 439365 branches)

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Cc: Anders Roxell <anders.roxell@linaro.org>
Acked-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230228190653.1602033-11-alex.bennee@linaro.org>
2023-03-01 10:31:52 +00:00
Alex Bennée
bdcf4b36bd tests: skip the nios2 replay_kernel test
It is buggy and keeps failing.

Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230228190653.1602033-10-alex.bennee@linaro.org>
2023-03-01 10:31:49 +00:00
Alex Bennée
171080d891 testing: update ubuntu2004 to ubuntu2204
The 22.04 LTS release has been out for almost a year now so its time
to update all the remaining images to the current LTS. We can also
drop some hacks we need for older clang TSAN support.

We will keep the ubuntu2004 container around for those who wish to
test builds on the currently still supported baseline.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20230228190653.1602033-9-alex.bennee@linaro.org>
2023-03-01 10:31:46 +00:00
Alex Bennée
7c7d369b33 tests: don't run benchmarks for the tsan build
All we are really doing here is checking that TSAN builds compile and are
therefor a tool available to developers. The benchmarks are not
representative of QEMU's actual threading behaviour and they burn
precious CI time. Indeed switching to check-unit reveals many
unaddressed issues which have been logged at:

  https://gitlab.com/qemu-project/qemu/-/issues/1496

So for now disable the make check and make this a build only
test.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230228190653.1602033-8-alex.bennee@linaro.org>
2023-03-01 10:31:40 +00:00
Alex Bennée
87168ef049 gitlab: extend custom runners with base_job_template
The base job template is responsible for controlling how we kick off
testing on our various branches. Rename and extend the
custom_runner_template so we can take advantage of all that control.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20230228190653.1602033-7-alex.bennee@linaro.org>
2023-03-01 10:31:35 +00:00
Thomas Huth
793d6e046f gitlab-ci: Use artifacts instead of dumping logs in the Cirrus-CI jobs
The meson log files can get very big, especially if running the tests in
verbose mode. So dumping those logs to the console was a bad idea, since
gitlab truncates the output if it is getting too big. Let's publish the
logs as artifacts instead. This has the disadvantage that you have to
look up the logs on cirrus-ci.com now instead, but that's still better
than not having the important part of the log at all since it got
truncated.

Fixes: 998f334722 ("gitlab: show testlog.txt contents ...")
Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20230215142503.90660-1-thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20230228190653.1602033-6-alex.bennee@linaro.org>
2023-03-01 10:31:31 +00:00
Alex Bennée
6348a546ed tests: make fp-test less chatty when running from test suite
As we like to run tests under CI with V=1 flags the softfloat tests
can add up to a fair amount of extra log lines. With an update to the
testfloat library we can now call fp-test with the -q flag and reduce
the output to a terse one line per function tested.

  make check-softfloat V=1 | wc -l
  759

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230228190653.1602033-5-alex.bennee@linaro.org>
2023-03-01 10:31:28 +00:00
Alex Bennée
c997068077 tests: be a bit more strict cleaning up fifos
When we re-factored we dropped the unlink() step which turns out to be
required for rmdir to do its thing. If we had been checking the return
value we would have noticed so lets do that with this fix.

Fixes: 68406d1085 (tests/unit: cleanups for test-io-channel-command)
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Suggested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230228190653.1602033-4-alex.bennee@linaro.org>
2023-03-01 10:31:20 +00:00
Alex Bennée
ab4c136109 tests: add socat dependency for tests
We only use it for test-io-channel-command at the moment.
Unfortunately bringing socat into CI exposed an existing bug in the
test-io-channel-command unit test so we disabled it for MacOS in the
previous patch.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Cc: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20230228190653.1602033-3-alex.bennee@linaro.org>
2023-03-01 10:31:14 +00:00
Alex Bennée
a6d715116f tests: don't run socat tests on MacOS as well
In preparation for the next patch when we enable socat for our CI
images we need to disable this part of the test for MacOS. The bug has
been raised here:

  https://gitlab.com/qemu-project/qemu/-/issues/1495

Once that is fixed we should re-enable the test.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230228190653.1602033-2-alex.bennee@linaro.org>
2023-03-01 10:31:09 +00:00
David Woodhouse
79807f3e6b hw/xen: Subsume xen_be_register_common() into xen_be_init()
Every caller of xen_be_init() checks and exits on error, then calls
xen_be_register_common(). Just make xen_be_init() abort for itself and
return void, and register the common devices too.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
2023-03-01 09:09:22 +00:00
David Woodhouse
c1eaa6d0df i386/xen: Document Xen HVM emulation
Signed-off-by: David Woodhouse <dwmw2@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
2023-03-01 09:09:22 +00:00
David Woodhouse
e16aff4cc2 kvm/i386: Add xen-evtchn-max-pirq property
The default number of PIRQs is set to 256 to avoid issues with 32-bit MSI
devices. Allow it to be increased if the user desires.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
2023-03-01 09:09:22 +00:00
David Woodhouse
6096cf7877 hw/xen: Support MSI mapping to PIRQ
The way that Xen handles MSI PIRQs is kind of awful.

There is a special MSI message which targets a PIRQ. The vector in the
low bits of data must be zero. The low 8 bits of the PIRQ# are in the
destination ID field, the extended destination ID field is unused, and
instead the high bits of the PIRQ# are in the high 32 bits of the address.

Using the high bits of the address means that we can't intercept and
translate these messages in kvm_send_msi(), because they won't be caught
by the APIC — addresses like 0x1000fee46000 aren't in the APIC's range.

So we catch them in pci_msi_trigger() instead, and deliver the event
channel directly.

That isn't even the worst part. The worst part is that Xen snoops on
writes to devices' MSI vectors while they are *masked*. When a MSI
message is written which looks like it targets a PIRQ, it remembers
the device and vector for later.

When the guest makes a hypercall to bind that PIRQ# (snooped from a
marked MSI vector) to an event channel port, Xen *unmasks* that MSI
vector on the device. Xen guests using PIRQ delivery of MSI don't
ever actually unmask the MSI for themselves.

Now that this is working we can finally enable XENFEAT_hvm_pirqs and
let the guest use it all.

Tested with passthrough igb and emulated e1000e + AHCI.

           CPU0       CPU1
  0:         65          0   IO-APIC   2-edge      timer
  1:          0         14  xen-pirq   1-ioapic-edge  i8042
  4:          0        846  xen-pirq   4-ioapic-edge  ttyS0
  8:          1          0  xen-pirq   8-ioapic-edge  rtc0
  9:          0          0  xen-pirq   9-ioapic-level  acpi
 12:        257          0  xen-pirq  12-ioapic-edge  i8042
 24:       9600          0  xen-percpu    -virq      timer0
 25:       2758          0  xen-percpu    -ipi       resched0
 26:          0          0  xen-percpu    -ipi       callfunc0
 27:          0          0  xen-percpu    -virq      debug0
 28:       1526          0  xen-percpu    -ipi       callfuncsingle0
 29:          0          0  xen-percpu    -ipi       spinlock0
 30:          0       8608  xen-percpu    -virq      timer1
 31:          0        874  xen-percpu    -ipi       resched1
 32:          0          0  xen-percpu    -ipi       callfunc1
 33:          0          0  xen-percpu    -virq      debug1
 34:          0       1617  xen-percpu    -ipi       callfuncsingle1
 35:          0          0  xen-percpu    -ipi       spinlock1
 36:          8          0   xen-dyn    -event     xenbus
 37:          0       6046  xen-pirq    -msi       ahci[0000:00:03.0]
 38:          1          0  xen-pirq    -msi-x     ens4
 39:          0         73  xen-pirq    -msi-x     ens4-rx-0
 40:         14          0  xen-pirq    -msi-x     ens4-rx-1
 41:          0         32  xen-pirq    -msi-x     ens4-tx-0
 42:         47          0  xen-pirq    -msi-x     ens4-tx-1

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
2023-03-01 09:09:22 +00:00
David Woodhouse
4f81baa33e hw/xen: Support GSI mapping to PIRQ
If I advertise XENFEAT_hvm_pirqs then a guest now boots successfully as
long as I tell it 'pci=nomsi'.

[root@localhost ~]# cat /proc/interrupts
           CPU0
  0:         52   IO-APIC   2-edge      timer
  1:         16  xen-pirq   1-ioapic-edge  i8042
  4:       1534  xen-pirq   4-ioapic-edge  ttyS0
  8:          1  xen-pirq   8-ioapic-edge  rtc0
  9:          0  xen-pirq   9-ioapic-level  acpi
 11:       5648  xen-pirq  11-ioapic-level  ahci[0000:00:04.0]
 12:        257  xen-pirq  12-ioapic-edge  i8042
...

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
2023-03-01 09:09:20 +00:00
David Woodhouse
aa98ee38a5 hw/xen: Implement emulated PIRQ hypercall support
This wires up the basic infrastructure but the actual interrupts aren't
there yet, so don't advertise it to the guest.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
2023-03-01 09:09:01 +00:00
David Woodhouse
799c23548f i386/xen: Implement HYPERVISOR_physdev_op
Just hook up the basic hypercalls to stubs in xen_evtchn.c for now.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
2023-03-01 09:08:26 +00:00
David Woodhouse
bdfdb74882 hw/xen: Automatically add xen-platform PCI device for emulated Xen guests
It isn't strictly mandatory but Linux guests at least will only map
their grant tables over the dummy BAR that it provides, and don't have
sufficient wit to map them in any other unused part of their guest
address space. So include it by default for minimal surprise factor.

As I come to document "how to run a Xen guest in QEMU", this means one
fewer thing to tell the user about, according to the mantra of "if it
needs documenting, fix it first, then document what remains".

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
2023-03-01 09:08:26 +00:00
David Woodhouse
f3341e7b91 hw/xen: Add basic ring handling to xenstore
Extract requests, return ENOSYS to all of them. This is enough to allow
older Linux guests to boot, as they need *something* back but it doesn't
matter much what.

A full implementation of a single-tentant internal XenStore copy-on-write
tree with transactions and watches is waiting in the wings to be sent in
a subsequent round of patches along with hooking up the actual PV disk
back end in qemu, but this is enough to get guests booting for now.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
2023-03-01 09:08:26 +00:00
David Woodhouse
c08f5d0e53 hw/xen: Add xen_xenstore device for xenstore emulation
Just the basic shell, with the event channel hookup. It only dumps the
buffer for now; a real ring implmentation will come in a subsequent patch.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
2023-03-01 09:08:26 +00:00
David Woodhouse
794fba23a5 hw/xen: Add backend implementation of interdomain event channel support
The provides the QEMU side of interdomain event channels, allowing events
to be sent to/from the guest.

The API mirrors libxenevtchn, and in time both this and the real Xen one
will be available through ops structures so that the PV backend drivers
can use the correct one as appropriate.

For now, this implementation can be used directly by our XenStore which
will be for emulated mode only.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
2023-03-01 09:08:25 +00:00
Joao Martins
c6623cc3e7 i386/xen: handle HVMOP_get_param
Which is used to fetch xenstore PFN and port to be used
by the guest. This is preallocated by the toolstack when
guest will just read those and use it straight away.

Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
2023-03-01 09:07:52 +00:00
David Woodhouse
8b57d5c523 i386/xen: Reserve Xen special pages for console, xenstore rings
Xen has eight frames at 0xfeff8000 for this; we only really need two for
now and KVM puts the identity map at 0xfeffc000, so limit ourselves to
four.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
2023-03-01 09:07:52 +00:00
Joao Martins
b746a77926 i386/xen: handle PV timer hypercalls
Introduce support for one shot and periodic mode of Xen PV timers,
whereby timer interrupts come through a special virq event channel
with deadlines being set through:

1) set_timer_op hypercall (only oneshot)
2) vcpu_op hypercall for {set,stop}_{singleshot,periodic}_timer
hypercalls

Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
2023-03-01 09:07:52 +00:00
David Woodhouse
b46f9745b1 hw/xen: Implement GNTTABOP_query_size
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
2023-03-01 09:07:52 +00:00
David Woodhouse
28b7ae94a2 i386/xen: Implement HYPERVISOR_grant_table_op and GNTTABOP_[gs]et_verson
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
2023-03-01 09:07:52 +00:00
David Woodhouse
e33cb789af hw/xen: Support mapping grant frames
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
2023-03-01 09:07:52 +00:00
David Woodhouse
a28b0fc034 hw/xen: Add xen_gnttab device for grant table emulation
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
2023-03-01 09:07:52 +00:00
David Woodhouse
6f43f2ee49 kvm/i386: Add xen-gnttab-max-frames property
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
2023-03-01 09:07:52 +00:00
David Woodhouse
2aff696b10 hw/xen: Support HVM_PARAM_CALLBACK_TYPE_PCI_INTX callback
The guest is permitted to specify an arbitrary domain/bus/device/function
and INTX pin from which the callback IRQ shall appear to have come.

In QEMU we can only easily do this for devices that actually exist, and
even that requires us "knowing" that it's a PCMachine in order to find
the PCI root bus — although that's OK really because it's always true.

We also don't get to get notified of INTX routing changes, because we
can't do that as a passive observer; if we try to register a notifier
it will overwrite any existing notifier callback on the device.

But in practice, guests using PCI_INTX will only ever use pin A on the
Xen platform device, and won't swizzle the INTX routing after they set
it up. So this is just fine.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
2023-03-01 09:07:50 +00:00
David Woodhouse
ddf0fd9ae1 hw/xen: Support HVM_PARAM_CALLBACK_TYPE_GSI callback
The GSI callback (and later PCI_INTX) is a level triggered interrupt. It
is asserted when an event channel is delivered to vCPU0, and is supposed
to be cleared when the vcpu_info->evtchn_upcall_pending field for vCPU0
is cleared again.

Thankfully, Xen does *not* assert the GSI if the guest sets its own
evtchn_upcall_pending field; we only need to assert the GSI when we
have delivered an event for ourselves. So that's the easy part, kind of.

There's a slight complexity in that we need to hold the BQL before we
can call qemu_set_irq(), and we definitely can't do that while holding
our own port_lock (because we'll need to take that from the qemu-side
functions that the PV backend drivers will call). So if we end up
wanting to set the IRQ in a context where we *don't* already hold the
BQL, defer to a BH.

However, we *do* need to poll for the evtchn_upcall_pending flag being
cleared. In an ideal world we would poll that when the EOI happens on
the PIC/IOAPIC. That's how it works in the kernel with the VFIO eventfd
pairs — one is used to trigger the interrupt, and the other works in the
other direction to 'resample' on EOI, and trigger the first eventfd
again if the line is still active.

However, QEMU doesn't seem to do that. Even VFIO level interrupts seem
to be supported by temporarily unmapping the device's BARs from the
guest when an interrupt happens, then trapping *all* MMIO to the device
and sending the 'resample' event on *every* MMIO access until the IRQ
is cleared! Maybe in future we'll plumb the 'resample' concept through
QEMU's irq framework but for now we'll do what Xen itself does: just
check the flag on every vmexit if the upcall GSI is known to be
asserted.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
2023-03-01 09:06:44 +00:00
Joao Martins
507cb64d6e i386/xen: add monitor commands to test event injection
Specifically add listing, injection of event channels.

Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Paul Durrant <paul@xen.org>
2023-03-01 08:22:50 +00:00
David Woodhouse
a15b10978f hw/xen: Implement EVTCHNOP_reset
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
2023-03-01 08:22:50 +00:00
David Woodhouse
306670461b hw/xen: Implement EVTCHNOP_bind_vcpu
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
2023-03-01 08:22:50 +00:00
David Woodhouse
8432788104 hw/xen: Implement EVTCHNOP_bind_interdomain
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
2023-03-01 08:22:50 +00:00
David Woodhouse
e1db61b87b hw/xen: Implement EVTCHNOP_alloc_unbound
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
2023-03-01 08:22:50 +00:00
David Woodhouse
cf7679abdd hw/xen: Implement EVTCHNOP_send
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
2023-03-01 08:22:50 +00:00