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| author | Sean Christopherson <seanjc@google.com> | 2021-09-01 13:30:29 -0700 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-09-22 10:24:02 -0400 |
| commit | 61e52f1630f54713f5dffa1ab4bb49772235aa5a (patch) | |
| tree | 7c77125cb2a0f63622af238ebb9fbea61ba72979 /tools/arch/x86 | |
| parent | de5f4213dafa8f8b0b52cdaf06bb35ad4cab1681 (diff) | |
| download | linux-61e52f1630f54713f5dffa1ab4bb49772235aa5a.tar.bz2 | |
KVM: selftests: Add a test for KVM_RUN+rseq to detect task migration bugs
Add a test to verify an rseq's CPU ID is updated correctly if the task is
migrated while the kernel is handling KVM_RUN. This is a regression test
for a bug introduced by commit 72c3c0fe54a3 ("x86/kvm: Use generic xfer
to guest work function"), where TIF_NOTIFY_RESUME would be cleared by KVM
without updating rseq, leading to a stale CPU ID and other badness.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Acked-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Message-Id: <20210901203030.1292304-5-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tools/arch/x86')
0 files changed, 0 insertions, 0 deletions