[PATCH v5 32/36] KVM: arm64: Provide sanitized mmfr* registers at EL2
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STALE2043d
From: Quentin Perret <hidden>
Date: 2021-03-15 14:53:28
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
Revision v5 of 3 in this series.
Revisions (3)
- v3 [diff vs current]
- v4 [diff vs current]
- v5 current
We will need to read sanitized values of mmfr{0,1}_el1 at EL2 soon, so
add them to the list of copied variables.
Signed-off-by: Quentin Perret <redacted>
---
arch/arm64/include/asm/kvm_cpufeature.h | 2 ++
arch/arm64/kvm/sys_regs.c | 2 ++
2 files changed, 4 insertions(+)
diff --git a/arch/arm64/include/asm/kvm_cpufeature.h b/arch/arm64/include/asm/kvm_cpufeature.h
index efba1b89b8a4..48cba6cecd71 100644
--- a/arch/arm64/include/asm/kvm_cpufeature.h
+++ b/arch/arm64/include/asm/kvm_cpufeature.h@@ -15,3 +15,5 @@ #endif KVM_HYP_CPU_FTR_REG(arm64_ftr_reg_ctrel0); +KVM_HYP_CPU_FTR_REG(arm64_ftr_reg_id_aa64mmfr0_el1); +KVM_HYP_CPU_FTR_REG(arm64_ftr_reg_id_aa64mmfr1_el1);
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index 3ec34c25e877..dfb3b4f9ca84 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c@@ -2784,6 +2784,8 @@ struct __ftr_reg_copy_entry { struct arm64_ftr_reg *dst; } hyp_ftr_regs[] __initdata = { CPU_FTR_REG_HYP_COPY(SYS_CTR_EL0, arm64_ftr_reg_ctrel0), + CPU_FTR_REG_HYP_COPY(SYS_ID_AA64MMFR0_EL1, arm64_ftr_reg_id_aa64mmfr0_el1), + CPU_FTR_REG_HYP_COPY(SYS_ID_AA64MMFR1_EL1, arm64_ftr_reg_id_aa64mmfr1_el1), }; void __init setup_kvm_el2_caps(void)
--
2.31.0.rc2.261.g7f71774620-goog
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