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authorSandipan Das <[email protected]>2022-05-18 14:13:27 +0530
committerPeter Zijlstra <[email protected]>2022-05-19 23:46:14 +0200
commitbae19fdd7e9e759580ac4693d2df3bc23ab415d7 (patch)
tree3b8fd74796ec1f054c9000334682f32914b81a52 /lib/mpi/mpi-sub-ui.c
parent841b51e4a3590866d17fa2663c64688c25b891b1 (diff)
perf/x86/amd/core: Fix reloading events for SVM
Commit 1018faa6cf23 ("perf/x86/kvm: Fix Host-Only/Guest-Only counting with SVM disabled") addresses an issue in which the Host-Only bit in the counter control registers needs to be masked off when SVM is not enabled. The events need to be reloaded whenever SVM is enabled or disabled for a CPU and this requires the PERF_CTL registers to be reprogrammed using {enable,disable}_all(). However, PerfMonV2 variants of these functions do not reprogram the PERF_CTL registers. Hence, the legacy enable_all() function should also be called. Fixes: 9622e67e3980 ("perf/x86/amd/core: Add PerfMonV2 counter control") Reported-by: Like Xu <[email protected]> Signed-off-by: Sandipan Das <[email protected]> Signed-off-by: Peter Zijlstra (Intel) <[email protected]> Link: https://lkml.kernel.org/r/[email protected]
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