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| author | Wanpeng Li <wanpengli@tencent.com> | 2019-06-11 20:23:49 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2019-07-02 18:56:04 +0200 |
| commit | 715062970f3748fbbf55c1a8cb495051760a65c1 (patch) | |
| tree | a2443ef6acff1492eea3cd89caa7130f6130a88d /Documentation/virtual | |
| parent | f85f6e7bc9682a6d8b342c010cd6aa58521fdeec (diff) | |
KVM: X86: Implement PV sched yield hypercall
The target vCPUs are in runnable state after vcpu_kick and suitable
as a yield target. This patch implements the sched yield hypercall.
17% performance increasement of ebizzy benchmark can be observed in an
over-subscribe environment. (w/ kvm-pv-tlb disabled, testing TLB flush
call-function IPI-many since call-function is not easy to be trigged
by userspace workload).
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Liran Alon <liran.alon@oracle.com>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'Documentation/virtual')
0 files changed, 0 insertions, 0 deletions