[PATCH 05/10] arm64: mops: don't disable host MOPS instructions from EL2
From: Kristina Martsenko <hidden>
Date: 2023-02-16 16:02:00
Also in:
kvmarm, lkml
Subsystem:
arm64 port (aarch64 architecture), kernel virtual machine for arm64 (kvm/arm64), the rest · Maintainers:
Catalin Marinas, Will Deacon, Marc Zyngier, Oliver Upton, Linus Torvalds
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 <redacted> --- arch/arm64/include/asm/kvm_arm.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
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))
--
2.25.1
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