diff options
| author | Alexandru Elisei <[email protected]> | 2022-01-27 16:17:59 +0000 |
|---|---|---|
| committer | Marc Zyngier <[email protected]> | 2022-02-08 17:51:22 +0000 |
| commit | 583cda1b0e7d5d49db5fc15db623166310e36bf6 (patch) | |
| tree | 04b01167aa2bb323a3239bee42169206297dd6c5 /net/lapb/lapb_subr.c | |
| parent | 6ee7fca2a4a023b14aa1f1f3c4f6c833116116ef (diff) | |
KVM: arm64: Refuse to run VCPU if the PMU doesn't match the physical CPU
Userspace can assign a PMU to a VCPU with the KVM_ARM_VCPU_PMU_V3_SET_PMU
device ioctl. If the VCPU is scheduled on a physical CPU which has a
different PMU, the perf events needed to emulate a guest PMU won't be
scheduled in and the guest performance counters will stop counting. Treat
it as an userspace error and refuse to run the VCPU in this situation.
Suggested-by: Marc Zyngier <[email protected]>
Signed-off-by: Alexandru Elisei <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Diffstat (limited to 'net/lapb/lapb_subr.c')
0 files changed, 0 insertions, 0 deletions