On Tue, 18 Jan 2022 01:57:00 +0000, Jing Zhang wrote:
> This patch is to reduce the performance degradation of guest workload during
> dirty logging on ARM64. A fast path is added to handle permission relaxation
> during dirty logging. The MMU lock is replaced with rwlock, by which all
> permision relaxations on leaf pte can be performed under the read lock. This
> greatly reduces the MMU lock contention during dirty logging. With this
> solution, the source guest workload performance degradation can be improved
> by more than 60%.
>
> [...]
Applied to next, thanks!
[1/3] KVM: arm64: Use read/write spin lock for MMU protection
commit: fcc5bf89635a05e627cdd2e9ec52c989c8dfe2ab
[2/3] KVM: arm64: Add fast path to handle permission relaxation during dirty logging
commit: f783ef1c0e82e4fc311a972472ff61f6d1d0e22d
[3/3] KVM: selftests: Add vgic initialization for dirty log perf test for ARM
commit: c340f7899af6f83bd937f8838949bb32da54c8a4
Cheers,
M.
--
Without deviation from the norm, progress is not possible.
