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| author | Paolo Bonzini <pbonzini@redhat.com> | 2018-08-05 17:07:46 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2018-08-05 18:10:19 +0300 |
| commit | 8e0b2b916662e09dd4d09e5271cdf214c6b80e62 (patch) | |
| tree | 77e5da72764da3c8ead7c72391a369f48adfb606 /arch/x86/include/asm/vmx.h | |
| parent | ea156d192f5257a5bf393d33910d3b481bf8a401 (diff) | |
| download | linux-8e0b2b916662e09dd4d09e5271cdf214c6b80e62.tar.xz | |
x86/speculation: Use ARCH_CAPABILITIES to skip L1D flush on vmentry
Bit 3 of ARCH_CAPABILITIES tells a hypervisor that L1D flush on vmentry is
not needed. Add a new value to enum vmx_l1d_flush_state, which is used
either if there is no L1TF bug at all, or if bit 3 is set in ARCH_CAPABILITIES.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/include/asm/vmx.h')
| -rw-r--r-- | arch/x86/include/asm/vmx.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/vmx.h b/arch/x86/include/asm/vmx.h index 91241ccd4cfa..95f9107449bf 100644 --- a/arch/x86/include/asm/vmx.h +++ b/arch/x86/include/asm/vmx.h @@ -582,6 +582,7 @@ enum vmx_l1d_flush_state { VMENTER_L1D_FLUSH_COND, VMENTER_L1D_FLUSH_ALWAYS, VMENTER_L1D_FLUSH_EPT_DISABLED, + VMENTER_L1D_FLUSH_NOT_REQUIRED, }; extern enum vmx_l1d_flush_state l1tf_vmx_mitigation; |