From: Kristina Martsenko Date: Tue, 9 May 2023 14:22:29 +0000 (+0100) Subject: arm64: mops: don't disable host MOPS instructions from EL2 X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=b1319c0e955933eae918a8a95c5361378ca86968;p=linux.git arm64: mops: don't disable host MOPS instructions from EL2 To allow nVHE host EL0 and EL1 to use FEAT_MOPS instructions, configure EL2 to not cause these instructions to be treated as UNDEFINED. A VHE host is unaffected by this control. Reviewed-by: Catalin Marinas Signed-off-by: Kristina Martsenko Link: https://lore.kernel.org/r/20230509142235.3284028-6-kristina.martsenko@arm.com Signed-off-by: Catalin Marinas --- diff --git a/arch/arm64/include/asm/kvm_arm.h b/arch/arm64/include/asm/kvm_arm.h index 7bb2fbddda545..d2d4f4cd12b8b 100644 --- a/arch/arm64/include/asm/kvm_arm.h +++ b/arch/arm64/include/asm/kvm_arm.h @@ -94,7 +94,7 @@ #define HCR_HOST_VHE_FLAGS (HCR_RW | HCR_TGE | HCR_E2H) #define HCRX_GUEST_FLAGS (HCRX_EL2_SMPME) -#define HCRX_HOST_FLAGS 0 +#define HCRX_HOST_FLAGS (HCRX_EL2_MSCEn) /* TCR_EL2 Registers bits */ #define TCR_EL2_RES1 ((1U << 31) | (1 << 23))