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| author | Paolo Bonzini <pbonzini@redhat.com> | 2025-03-31 17:05:50 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2025-04-04 06:24:05 -0400 |
| commit | f3e555ba45da361f5286b35921c7ca8afbef6384 (patch) | |
| tree | 08e17cfe1c17568c277d5cde09243dbeb27e9993 /Documentation | |
| parent | c57047f6f37906cc4f6a4fec1683f87731f25248 (diff) | |
Documentation: KVM: KVM_GET_SUPPORTED_CPUID now exposes TSC_DEADLINE
TSC_DEADLINE is now advertised unconditionally by KVM_GET_SUPPORTED_CPUID,
since commit 9be4ec35d668 ("KVM: x86: Advertise TSC_DEADLINE_TIMER in
KVM_GET_SUPPORTED_CPUID", 2024-12-18). Adjust the documentation to
reflect the new behavior.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Message-ID: <20250331150550.510320-1-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/virt/kvm/api.rst | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/Documentation/virt/kvm/api.rst b/Documentation/virt/kvm/api.rst index 1f8625b7646a..0ec40765ccd4 100644 --- a/Documentation/virt/kvm/api.rst +++ b/Documentation/virt/kvm/api.rst @@ -9076,9 +9076,10 @@ the local APIC. The same is true for the ``KVM_FEATURE_PV_UNHALT`` paravirtualized feature. -CPU[EAX=1]:ECX[24] (TSC_DEADLINE) is not reported by ``KVM_GET_SUPPORTED_CPUID``. -It can be enabled if ``KVM_CAP_TSC_DEADLINE_TIMER`` is present and the kernel -has enabled in-kernel emulation of the local APIC. +On older versions of Linux, CPU[EAX=1]:ECX[24] (TSC_DEADLINE) is not reported by +``KVM_GET_SUPPORTED_CPUID``, but it can be enabled if ``KVM_CAP_TSC_DEADLINE_TIMER`` +is present and the kernel has enabled in-kernel emulation of the local APIC. +On newer versions, ``KVM_GET_SUPPORTED_CPUID`` does report the bit as available. CPU topology ~~~~~~~~~~~~ |