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x86/kvm: Don't use PV TLB/yield when mwait is advertised
authorWanpeng Li <wanpengli@tencent.com>
Fri, 25 Feb 2022 08:29:40 +0000 (00:29 -0800)
committerPaolo Bonzini <pbonzini@redhat.com>
Fri, 25 Feb 2022 15:09:34 +0000 (10:09 -0500)
commit40cd58dbf121e1d0c18f1bd4dd10335ae45a28fc
treef408d6406e4c896e77677e1bb82b622dcbaee1c3tree | snapshot
parentece32a75f003464cad59c26305b4462305273d70commit | diff
x86/kvm: Don't use PV TLB/yield when mwait is advertised

MWAIT is advertised in host is not overcommitted scenario, however, PV
TLB/sched yield should be enabled in host overcommitted scenario. Let's
add the MWAIT checking when enabling PV TLB/sched yield.

Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Message-Id: <1645777780-2581-1-git-send-email-wanpengli@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
arch/x86/kernel/kvm.c diff | blob | history
Domain: System / Kernel;