From: Marc Zyngier <[email protected]> It is a bit awkward to use kern_hyp_va() in __load_guest_stage2(), specially as the helper is shared between VHE and nVHE.
Instead, move the use of kern_hyp_va() in the nVHE code, and pass a pointer to the kvm->arch structure instead. Although this may look a bit awkward, it allows for some further simplification. Cc: Catalin Marinas <[email protected]> Cc: Jade Alglave <[email protected]> Cc: Shameer Kolothum <[email protected]> Signed-off-by: Marc Zyngier <[email protected]> Signed-off-by: Will Deacon <[email protected]> --- arch/arm64/include/asm/kvm_mmu.h | 5 +++-- arch/arm64/kvm/hyp/nvhe/switch.c | 4 +++- arch/arm64/kvm/hyp/nvhe/tlb.c | 2 +- arch/arm64/kvm/hyp/vhe/switch.c | 2 +- arch/arm64/kvm/hyp/vhe/tlb.c | 2 +- 5 files changed, 9 insertions(+), 6 deletions(-) diff --git a/arch/arm64/include/asm/kvm_mmu.h b/arch/arm64/include/asm/kvm_mmu.h index b52c5c4b9a3d..05e089653a1a 100644 --- a/arch/arm64/include/asm/kvm_mmu.h +++ b/arch/arm64/include/asm/kvm_mmu.h @@ -280,9 +280,10 @@ static __always_inline void __load_stage2(struct kvm_s2_mmu *mmu, unsigned long asm(ALTERNATIVE("nop", "isb", ARM64_WORKAROUND_SPECULATIVE_AT)); } -static __always_inline void __load_guest_stage2(struct kvm_s2_mmu *mmu) +static __always_inline void __load_guest_stage2(struct kvm_s2_mmu *mmu, + struct kvm_arch *arch) { - __load_stage2(mmu, kern_hyp_va(mmu->arch)->vtcr); + __load_stage2(mmu, arch->vtcr); } static inline struct kvm *kvm_s2_mmu_to_kvm(struct kvm_s2_mmu *mmu) diff --git a/arch/arm64/kvm/hyp/nvhe/switch.c b/arch/arm64/kvm/hyp/nvhe/switch.c index f7af9688c1f7..e50a49082923 100644 --- a/arch/arm64/kvm/hyp/nvhe/switch.c +++ b/arch/arm64/kvm/hyp/nvhe/switch.c @@ -170,6 +170,7 @@ int __kvm_vcpu_run(struct kvm_vcpu *vcpu) { struct kvm_cpu_context *host_ctxt; struct kvm_cpu_context *guest_ctxt; + struct kvm_s2_mmu *mmu; bool pmu_switch_needed; u64 exit_code; @@ -213,7 +214,8 @@ int __kvm_vcpu_run(struct kvm_vcpu *vcpu) __sysreg32_restore_state(vcpu); __sysreg_restore_state_nvhe(guest_ctxt); - __load_guest_stage2(kern_hyp_va(vcpu->arch.hw_mmu)); + mmu = kern_hyp_va(vcpu->arch.hw_mmu); + __load_guest_stage2(mmu, kern_hyp_va(mmu->arch)); __activate_traps(vcpu); __hyp_vgic_restore_state(vcpu); diff --git a/arch/arm64/kvm/hyp/nvhe/tlb.c b/arch/arm64/kvm/hyp/nvhe/tlb.c index 38ed0f6f2703..76229407d8f0 100644 --- a/arch/arm64/kvm/hyp/nvhe/tlb.c +++ b/arch/arm64/kvm/hyp/nvhe/tlb.c @@ -39,7 +39,7 @@ static void __tlb_switch_to_guest(struct kvm_s2_mmu *mmu, * ensuring that we always have an ISB, but not two ISBs back * to back. */ - __load_guest_stage2(mmu); + __load_guest_stage2(mmu, kern_hyp_va(mmu->arch)); asm(ALTERNATIVE("isb", "nop", ARM64_WORKAROUND_SPECULATIVE_AT)); } diff --git a/arch/arm64/kvm/hyp/vhe/switch.c b/arch/arm64/kvm/hyp/vhe/switch.c index b3229924d243..0cb7523a501a 100644 --- a/arch/arm64/kvm/hyp/vhe/switch.c +++ b/arch/arm64/kvm/hyp/vhe/switch.c @@ -128,7 +128,7 @@ static int __kvm_vcpu_run_vhe(struct kvm_vcpu *vcpu) * __load_guest_stage2 configures stage 2 translation, and * __activate_traps clear HCR_EL2.TGE (among other things). */ - __load_guest_stage2(vcpu->arch.hw_mmu); + __load_guest_stage2(vcpu->arch.hw_mmu, vcpu->arch.hw_mmu->arch); __activate_traps(vcpu); __kvm_adjust_pc(vcpu); diff --git a/arch/arm64/kvm/hyp/vhe/tlb.c b/arch/arm64/kvm/hyp/vhe/tlb.c index 66f17349f0c3..5e9fb3989e0b 100644 --- a/arch/arm64/kvm/hyp/vhe/tlb.c +++ b/arch/arm64/kvm/hyp/vhe/tlb.c @@ -53,7 +53,7 @@ static void __tlb_switch_to_guest(struct kvm_s2_mmu *mmu, * place before clearing TGE. __load_guest_stage2() already * has an ISB in order to deal with this. */ - __load_guest_stage2(mmu); + __load_guest_stage2(mmu, mmu->arch); val = read_sysreg(hcr_el2); val &= ~HCR_TGE; write_sysreg(val, hcr_el2); -- 2.32.0.605.g8dce9f2422-goog _______________________________________________ kvmarm mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
