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| author | Sean Christopherson <seanjc@google.com> | 2025-04-01 18:47:26 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2025-04-04 14:11:59 +0300 |
| commit | 6bad6ecc63b75af294ff3f56f54d6b857c8964a5 (patch) | |
| tree | 0ca7d6ea544b6fe25ca7f8563f55fd2ae8407a54 /tools/perf/scripts/python/check-perf-trace.py | |
| parent | 782f9feaa9517caf33186dcdd6b50a8f770ed29b (diff) | |
| download | linux-6bad6ecc63b75af294ff3f56f54d6b857c8964a5.tar.xz | |
KVM: VMX: Assert that IRQs are disabled when putting vCPU on PI wakeup list
Assert that IRQs are already disabled when putting a vCPU on a CPU's PI
wakeup list, as opposed to saving/disabling+restoring IRQs. KVM relies on
IRQs being disabled until the vCPU task is fully scheduled out, i.e. until
the scheduler has dropped all of its per-CPU locks (e.g. for the runqueue),
as attempting to wake the task while it's being scheduled out could lead
to deadlock.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Reviewed-by: Yan Zhao <yan.y.zhao@intel.com>
Message-ID: <20250401154727.835231-2-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tools/perf/scripts/python/check-perf-trace.py')
0 files changed, 0 insertions, 0 deletions