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| author | Kristina Martsenko <kristina.martsenko@arm.com> | 2023-09-22 13:25:08 +0200 |
|---|---|---|
| committer | Oliver Upton <oliver.upton@linux.dev> | 2023-10-09 21:54:25 +0200 |
| commit | e0bb80c62cfd0c289c841d35e412e633299530e3 (patch) | |
| tree | 8f3b31ed6e6271adb455e0c6de4e78aa459572bc /arch/arm64/include | |
| parent | KVM: arm64: Add handler for MOPS exceptions (diff) | |
| download | linux-e0bb80c62cfd0c289c841d35e412e633299530e3.tar.xz linux-e0bb80c62cfd0c289c841d35e412e633299530e3.zip | |
KVM: arm64: Expose MOPS instructions to guests
Expose the Armv8.8 FEAT_MOPS feature to guests in the ID register and
allow the MOPS instructions to be run in a guest. Only expose MOPS if
the whole system supports it.
Note, it is expected that guests do not use these instructions on MMIO,
similarly to other instructions where ESR_EL2.ISV==0 such as LDP/STP.
Signed-off-by: Kristina Martsenko <kristina.martsenko@arm.com>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230922112508.1774352-3-kristina.martsenko@arm.com
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Diffstat (limited to 'arch/arm64/include')
| -rw-r--r-- | arch/arm64/include/asm/kvm_arm.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/arm64/include/asm/kvm_arm.h b/arch/arm64/include/asm/kvm_arm.h index 5882b2415596..2186927b1d21 100644 --- a/arch/arm64/include/asm/kvm_arm.h +++ b/arch/arm64/include/asm/kvm_arm.h @@ -102,7 +102,9 @@ #define HCR_HOST_NVHE_PROTECTED_FLAGS (HCR_HOST_NVHE_FLAGS | HCR_TSC) #define HCR_HOST_VHE_FLAGS (HCR_RW | HCR_TGE | HCR_E2H) -#define HCRX_GUEST_FLAGS (HCRX_EL2_SMPME | HCRX_EL2_TCR2En) +#define HCRX_GUEST_FLAGS \ + (HCRX_EL2_SMPME | HCRX_EL2_TCR2En | \ + (cpus_have_final_cap(ARM64_HAS_MOPS) ? (HCRX_EL2_MSCEn | HCRX_EL2_MCE2) : 0)) #define HCRX_HOST_FLAGS (HCRX_EL2_MSCEn | HCRX_EL2_TCR2En) /* TCR_EL2 Registers bits */ |