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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2022-12-13 01:18:44 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-12-13 01:18:44 +0300 |
| commit | 2da68a77b940722b04c2f7604a758eab46cf6cf9 (patch) | |
| tree | 0804deaffa7a891a648433287082a2fd9461b0a1 /arch/x86/include/asm/cpufeatures.h | |
| parent | c1f0fcd85d3d66f002fc1a4986363840fcca766d (diff) | |
| parent | 89e927bbcd45d507e5612ef72fda04182e544a38 (diff) | |
| download | linux-2da68a77b940722b04c2f7604a758eab46cf6cf9.tar.xz | |
Merge tag 'x86_sgx_for_6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 sgx updates from Dave Hansen:
"The biggest deal in this series is support for a new hardware feature
that allows enclaves to detect and mitigate single-stepping attacks.
There's also a minor performance tweak and a little piece of the
kmap_atomic() -> kmap_local() transition.
Summary:
- Introduce a new SGX feature (Asynchrounous Exit Notification) for
bare-metal enclaves and KVM guests to mitigate single-step attacks
- Increase batching to speed up enclave release
- Replace kmap/kunmap_atomic() calls"
* tag 'x86_sgx_for_6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/sgx: Replace kmap/kunmap_atomic() calls
KVM/VMX: Allow exposing EDECCSSA user leaf function to KVM guest
x86/sgx: Allow enclaves to use Asynchrounous Exit Notification
x86/sgx: Reduce delay and interference of enclave release
Diffstat (limited to 'arch/x86/include/asm/cpufeatures.h')
| -rw-r--r-- | arch/x86/include/asm/cpufeatures.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h index b2da7cb64b31..c9f4730bb113 100644 --- a/arch/x86/include/asm/cpufeatures.h +++ b/arch/x86/include/asm/cpufeatures.h @@ -304,6 +304,7 @@ #define X86_FEATURE_UNRET (11*32+15) /* "" AMD BTB untrain return */ #define X86_FEATURE_USE_IBPB_FW (11*32+16) /* "" Use IBPB during runtime firmware calls */ #define X86_FEATURE_RSB_VMEXIT_LITE (11*32+17) /* "" Fill RSB on VM exit when EIBRS is enabled */ +#define X86_FEATURE_SGX_EDECCSSA (11*32+18) /* "" SGX EDECCSSA user leaf function */ #define X86_FEATURE_MSR_TSX_CTRL (11*32+20) /* "" MSR IA32_TSX_CTRL (Intel) implemented */ |