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| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2022-10-13 11:58:43 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-12-29 15:33:27 -0500 |
| commit | b961aa757f940bebc608a412f66951e52a39a298 (patch) | |
| tree | b7ae4a2a3b3c6575ace181f034e570135a91f415 /arch/x86/include/asm/hyperv-tlfs.h | |
| parent | dfe0ecc6f5d32da13783d203403bd3ecacbd3179 (diff) | |
| download | linux-stable-b961aa757f940bebc608a412f66951e52a39a298.tar.gz linux-stable-b961aa757f940bebc608a412f66951e52a39a298.tar.bz2 linux-stable-b961aa757f940bebc608a412f66951e52a39a298.zip | |
x86/hyperv: Add HV_EXPOSE_INVARIANT_TSC define
Avoid open coding BIT(0) of HV_X64_MSR_TSC_INVARIANT_CONTROL by adding
a dedicated define. While there's only one user at this moment, the
upcoming KVM implementation of Hyper-V Invariant TSC feature will need
to use it as well.
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20221013095849.705943-2-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/include/asm/hyperv-tlfs.h')
| -rw-r--r-- | arch/x86/include/asm/hyperv-tlfs.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/include/asm/hyperv-tlfs.h b/arch/x86/include/asm/hyperv-tlfs.h index e3efaf6e6b62..617332dd64ac 100644 --- a/arch/x86/include/asm/hyperv-tlfs.h +++ b/arch/x86/include/asm/hyperv-tlfs.h @@ -255,6 +255,9 @@ enum hv_isolation_type { /* TSC invariant control */ #define HV_X64_MSR_TSC_INVARIANT_CONTROL 0x40000118 +/* HV_X64_MSR_TSC_INVARIANT_CONTROL bits */ +#define HV_EXPOSE_INVARIANT_TSC BIT_ULL(0) + /* Register name aliases for temporary compatibility */ #define HV_X64_MSR_STIMER0_COUNT HV_REGISTER_STIMER0_COUNT #define HV_X64_MSR_STIMER0_CONFIG HV_REGISTER_STIMER0_CONFIG |