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| author | Andrea Parri (Microsoft) <parri.andrea@gmail.com> | 2021-02-01 17:48:11 +0300 |
|---|---|---|
| committer | Wei Liu <wei.liu@kernel.org> | 2021-02-11 11:47:05 +0300 |
| commit | a6c76bb08dc7f7ff2b1c381002eb6c7211746182 (patch) | |
| tree | 9c86151283b8998c2cd26ccf1981d50c823cb555 /include/asm-generic/hyperv-tlfs.h | |
| parent | bdb49526d25b076af4bd31b2fc66986ff0df1127 (diff) | |
| download | linux-a6c76bb08dc7f7ff2b1c381002eb6c7211746182.tar.xz | |
x86/hyperv: Load/save the Isolation Configuration leaf
If bit 22 of Group B Features is set, the guest has access to the
Isolation Configuration CPUID leaf. On x86, the first four bits
of EAX in this leaf provide the isolation type of the partition;
we entail three isolation types: 'SNP' (hardware-based isolation),
'VBS' (software-based isolation), and 'NONE' (no isolation).
Signed-off-by: Andrea Parri (Microsoft) <parri.andrea@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: x86@kernel.org
Cc: linux-arch@vger.kernel.org
Link: https://lore.kernel.org/r/20210201144814.2701-2-parri.andrea@gmail.com
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Diffstat (limited to 'include/asm-generic/hyperv-tlfs.h')
| -rw-r--r-- | include/asm-generic/hyperv-tlfs.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/asm-generic/hyperv-tlfs.h b/include/asm-generic/hyperv-tlfs.h index e73a11850055..20d3cd950204 100644 --- a/include/asm-generic/hyperv-tlfs.h +++ b/include/asm-generic/hyperv-tlfs.h @@ -89,6 +89,7 @@ #define HV_ACCESS_STATS BIT(8) #define HV_DEBUGGING BIT(11) #define HV_CPU_POWER_MANAGEMENT BIT(12) +#define HV_ISOLATION BIT(22) /* |