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  1. 19 3月, 2021 1 次提交
  3. 18 3月, 2021 1 次提交
    • V
      selftests: kvm: Add basic Hyper-V clocksources tests · 2c7f76b4
      由 Vitaly Kuznetsov 提交于 
      Introduce a new selftest for Hyper-V clocksources (MSR-based reference TSC
and TSC page). As a starting point, test the following:
1) Reference TSC is 1Ghz clock.
2) Reference TSC and TSC page give the same reading.
3) TSC page gets updated upon KVM_SET_CLOCK call.
4) TSC page does not get updated when guest opted for reenlightenment.
5) Disabled TSC page doesn't get updated.
Signed-off-by: NVitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20210318140949.1065740-1-vkuznets@redhat.com>
[Add a host-side test using TSC + KVM_GET_MSR too. - Paolo]
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
      2c7f76b4
  5. 16 2月, 2021 1 次提交
  7. 11 2月, 2021 1 次提交
  9. 04 2月, 2021 4 次提交
  11. 12 12月, 2020 2 次提交
    • A
      selftests: kvm: Merge user_msr_test into userspace_msr_exit_test · fb636053
      由 Aaron Lewis 提交于 
      Both user_msr_test and userspace_msr_exit_test tests the functionality
of kvm_msr_filter.  Instead of testing this feature in two tests, merge
them together, so there is only one test for this feature.
Signed-off-by: NAaron Lewis <aaronlewis@google.com>
Message-Id: <20201204172530.2958493-1-aaronlewis@google.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
      fb636053
    • A
      selftests: kvm: Test MSR exiting to userspace · 3cea1891
      由 Aaron Lewis 提交于 
      Add a selftest to test that when the ioctl KVM_X86_SET_MSR_FILTER is
called with an MSR list, those MSRs exit to userspace.

This test uses 3 MSRs to test this:
  1. MSR_IA32_XSS, an MSR the kernel knows about.
  2. MSR_IA32_FLUSH_CMD, an MSR the kernel does not know about.
  3. MSR_NON_EXISTENT, an MSR invented in this test for the purposes of
     passing a fake MSR from the guest to userspace.  KVM just acts as a
     pass through.

Userspace is also able to inject a #GP.  This is demonstrated when
MSR_IA32_XSS and MSR_IA32_FLUSH_CMD are misused in the test.  When this
happens a #GP is initiated in userspace to be thrown in the guest which is
handled gracefully by the exception handling framework introduced earlier
in this series.

Tests for the generic instruction emulator were also added.  For this to
work the module parameter kvm.force_emulation_prefix=1 has to be enabled.
If it isn't enabled the tests will be skipped.

A test was also added to ensure the MSR permission bitmap is being set
correctly by executing reads and writes of MSR_FS_BASE and MSR_GS_BASE
in the guest while alternating which MSR userspace should intercept.  If
the permission bitmap is being set correctly only one of the MSRs should
be coming through at a time, and the guest should be able to read and
write the other one directly.
Signed-off-by: NAaron Lewis <aaronlewis@google.com>
Reviewed-by: NAlexander Graf <graf@amazon.com>
Message-Id: <20201012194716.3950330-5-aaronlewis@google.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
      3cea1891
  13. 15 11月, 2020 1 次提交
  15. 08 11月, 2020 4 次提交
    • B
      KVM: selftests: Introduce the dirty log perf test · 4fd94ec7
      由 Ben Gardon 提交于 
      The dirty log perf test will time verious dirty logging operations
(enabling dirty logging, dirtying memory, getting the dirty log,
clearing the dirty log, and disabling dirty logging) in order to
quantify dirty logging performance. This test can be used to inform
future performance improvements to KVM's dirty logging infrastructure.

This series was tested by running the following invocations on an Intel
Skylake machine:
dirty_log_perf_test -b 20m -i 100 -v 64
dirty_log_perf_test -b 20g -i 5 -v 4
dirty_log_perf_test -b 4g -i 5 -v 32
demand_paging_test -b 20m -v 64
demand_paging_test -b 20g -v 4
demand_paging_test -b 4g -v 32
All behaved as expected.
Signed-off-by: NBen Gardon <bgardon@google.com>
Message-Id: <20201027233733.1484855-6-bgardon@google.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
      4fd94ec7
    • A
      KVM: selftests: Add blessed SVE registers to get-reg-list · 31d21295
      由 Andrew Jones 提交于 
      Add support for the SVE registers to get-reg-list and create a
new test, get-reg-list-sve, which tests them when running on a
machine with SVE support.
Signed-off-by: NAndrew Jones <drjones@redhat.com>
Message-Id: <20201029201703.102716-5-drjones@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
      31d21295
    • A
      KVM: selftests: Add aarch64 get-reg-list test · fd02029a
      由 Andrew Jones 提交于 
      Check for KVM_GET_REG_LIST regressions. The blessed list was
created by running on v4.15 with the --core-reg-fixup option.
The following script was also used in order to annotate system
registers with their names when possible. When new system
registers are added the names can just be added manually using
the same grep.

while read reg; do
	if [[ ! $reg =~ ARM64_SYS_REG ]]; then
		printf "\t$reg\n"
		continue
	fi
	encoding=$(echo "$reg" | sed "s/ARM64_SYS_REG(//;s/),//")
	if ! name=$(grep "$encoding" ../../../../arch/arm64/include/asm/sysreg.h); then
		printf "\t$reg\n"
		continue
	fi
	name=$(echo "$name" | sed "s/.*SYS_//;s/[\t ]*sys_reg($encoding)$//")
	printf "\t$reg\t/* $name */\n"
done < <(aarch64/get-reg-list --core-reg-fixup --list)
Signed-off-by: NAndrew Jones <drjones@redhat.com>
Message-Id: <20201029201703.102716-3-drjones@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
      fd02029a
    • O
      selftests: kvm: test enforcement of paravirtual cpuid features · ac4a4d6d
      由 Oliver Upton 提交于 
      Add a set of tests that ensure the guest cannot access paravirtual msrs
and hypercalls that have been disabled in the KVM_CPUID_FEATURES leaf.
Expect a #GP in the case of msr accesses and -KVM_ENOSYS from
hypercalls.

Cc: Jim Mattson <jmattson@google.com>
Signed-off-by: NOliver Upton <oupton@google.com>
Reviewed-by: NPeter Shier <pshier@google.com>
Reviewed-by: NAaron Lewis <aaronlewis@google.com>
Message-Id: <20201027231044.655110-7-oupton@google.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
      ac4a4d6d
  17. 31 10月, 2020 1 次提交
  19. 28 9月, 2020 1 次提交
  21. 08 6月, 2020 1 次提交
  23. 01 6月, 2020 1 次提交
  25. 16 4月, 2020 1 次提交
  27. 25 3月, 2020 1 次提交
  29. 17 3月, 2020 3 次提交
  31. 25 2月, 2020 1 次提交
  33. 22 10月, 2019 2 次提交
  35. 09 8月, 2019 1 次提交
  37. 19 6月, 2019 1 次提交
  39. 08 5月, 2019 3 次提交
  41. 12 2月, 2019 1 次提交
  43. 20 10月, 2018 1 次提交
  45. 17 10月, 2018 2 次提交
  47. 20 9月, 2018 1 次提交
  49. 06 8月, 2018 2 次提交
    • P
      kvm: selftests: add basic test for state save and restore · fa3899ad
      由 Paolo Bonzini 提交于 
      The test calls KVM_RUN repeatedly, and creates an entirely new VM with the
old memory and vCPU state on every exit to userspace.  The kvm_util API is
expanded with two functions that manage the lifetime of a kvm_vm struct:
the first closes the file descriptors and leaves the memory allocated,
and the second opens the file descriptors and reuses the memory from
the previous incarnation of the kvm_vm struct.

For now the test is very basic, as it does not test for example XSAVE or
vCPU events.  However, it will test nested virtualization state starting
with the next patch.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
      fa3899ad
    • W
      kvm: selftests: add cr4_cpuid_sync_test · ca359066
      由 Wei Huang 提交于 
      KVM is supposed to update some guest VM's CPUID bits (e.g. OSXSAVE) when
CR4 is changed. A bug was found in KVM recently and it was fixed by
Commit c4d21882 ("KVM: x86: Update cpuid properly when CR4.OSXAVE or
CR4.PKE is changed"). This patch adds a test to verify the synchronization
between guest VM's CR4 and CPUID bits.
Signed-off-by: NWei Huang <wei@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
      ca359066
  51. 31 5月, 2018 1 次提交