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authorWanpeng Li <wanpengli@tencent.com>2019-06-11 15:23:50 +0300
committerPaolo Bonzini <pbonzini@redhat.com>2019-07-02 19:56:05 +0300
commit32b72ecc83b651fb8633ac4bd44957c54367699d (patch)
tree6dea551b4900870e4fe16883a9ef9bf3130a5909 /Documentation/virtual
parent715062970f3748fbbf55c1a8cb495051760a65c1 (diff)
downloadlinux-32b72ecc83b651fb8633ac4bd44957c54367699d.tar.xz
KVM: X86: Expose PV_SCHED_YIELD CPUID feature bit to guest
Expose PV_SCHED_YIELD feature bit to guest, the guest can check this feature bit before using paravirtualized sched yield. 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')
-rw-r--r--Documentation/virtual/kvm/cpuid.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/virtual/kvm/cpuid.txt b/Documentation/virtual/kvm/cpuid.txt
index 97ca1940a0dc..979a77ba5377 100644
--- a/Documentation/virtual/kvm/cpuid.txt
+++ b/Documentation/virtual/kvm/cpuid.txt
@@ -66,6 +66,10 @@ KVM_FEATURE_PV_SEND_IPI || 11 || guest checks this feature bit
|| || before using paravirtualized
|| || send IPIs.
------------------------------------------------------------------------------
+KVM_FEATURE_PV_SCHED_YIELD || 13 || guest checks this feature bit
+ || || before using paravirtualized
+ || || sched yield.
+------------------------------------------------------------------------------
KVM_FEATURE_CLOCKSOURCE_STABLE_BIT || 24 || host will warn if no guest-side
|| || per-cpu warps are expected in
|| || kvmclock.