| Message ID | 20230216160012.272345-6-kristina.martsenko@arm.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | arm64: support Armv8.8 memcpy instructions in userspace | expand |
On Thu, Feb 16, 2023 at 04:00:07PM +0000, Kristina Martsenko wrote: > 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. > > Signed-off-by: Kristina Martsenko <kristina.martsenko@arm.com> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
diff --git a/arch/arm64/include/asm/kvm_arm.h b/arch/arm64/include/asm/kvm_arm.h index cd8dd307aaba..f37d37957322 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 0 -#define HCRX_HOST_FLAGS (HCRX_EL2_SMPME) +#define HCRX_HOST_FLAGS (HCRX_EL2_SMPME | HCRX_EL2_MSCEn) /* TCR_EL2 Registers bits */ #define TCR_EL2_RES1 ((1U << 31) | (1 << 23))
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. Signed-off-by: Kristina Martsenko <kristina.martsenko@arm.com> --- arch/arm64/include/asm/kvm_arm.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)