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| author | Michael S. Tsirkin <mst@redhat.com> | 2018-05-17 17:54:24 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-05-17 20:12:13 +0300 |
| commit | 633711e82878dc29083fc5d2605166755e25b57a (patch) | |
| tree | 7abc99cfd5b05e144b41d7b56a4b929cf7a1e19d /Documentation/virtual | |
| parent | 711702b57cc3c50b84bd648de0f1ca0a378805be (diff) | |
| download | linux-633711e82878dc29083fc5d2605166755e25b57a.tar.xz | |
kvm: rename KVM_HINTS_DEDICATED to KVM_HINTS_REALTIME
KVM_HINTS_DEDICATED seems to be somewhat confusing:
Guest doesn't really care whether it's the only task running on a host
CPU as long as it's not preempted.
And there are more reasons for Guest to be preempted than host CPU
sharing, for example, with memory overcommit it can get preempted on a
memory access, post copy migration can cause preemption, etc.
Let's call it KVM_HINTS_REALTIME which seems to better
match what guests expect.
Also, the flag most be set on all vCPUs - current guests assume this.
Note so in the documentation.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'Documentation/virtual')
| -rw-r--r-- | Documentation/virtual/kvm/cpuid.txt | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/Documentation/virtual/kvm/cpuid.txt b/Documentation/virtual/kvm/cpuid.txt index d4f33eb805dd..ab022dcd0911 100644 --- a/Documentation/virtual/kvm/cpuid.txt +++ b/Documentation/virtual/kvm/cpuid.txt @@ -72,8 +72,8 @@ KVM_FEATURE_CLOCKSOURCE_STABLE_BIT || 24 || host will warn if no guest-side flag || value || meaning ================================================================================== -KVM_HINTS_DEDICATED || 0 || guest checks this feature bit to - || || determine if there is vCPU pinning - || || and there is no vCPU over-commitment, +KVM_HINTS_REALTIME || 0 || guest checks this feature bit to + || || determine that vCPUs are never + || || preempted for an unlimited time, || || allowing optimizations ---------------------------------------------------------------------------------- |