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FROMLIST: KVM: arm64: Refactor __load_guest_stage2()

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Refactor __load_guest_stage2() to introduce __load_stage2() which will
be re-used when loading the host stage 2.

Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Quentin Perret <qperret@google.com>
Link: https://lore.kernel.org/r/20210315143536.214621-24-qperret@google.com
Bug: 178098380
Change-Id: I9fe5b39cc065bc12460ef69279700139b28e12c7
This commit is contained in:
Quentin Perret
2021-03-15 14:35:23 +00:00
parent 1a9bba9121
commit 21a1f89953
1 changed files with 7 additions and 2 deletions
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9
arch/arm64/include/asm/kvm_mmu.h
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@@ -270,9 +270,9 @@ static __always_inline u64 kvm_get_vttbr(struct kvm_s2_mmu *mmu)
* Must be called from hyp code running at EL2 with an updated VTTBR
* and interrupts disabled.
*/
static __always_inline void __load_guest_stage2(struct kvm_s2_mmu *mmu)
static __always_inline void __load_stage2(struct kvm_s2_mmu *mmu, unsigned long vtcr)
{
write_sysreg(kern_hyp_va(mmu->arch)->vtcr, vtcr_el2);
write_sysreg(vtcr, vtcr_el2);
write_sysreg(kvm_get_vttbr(mmu), vttbr_el2);
/*
@@ -283,6 +283,11 @@ static __always_inline void __load_guest_stage2(struct kvm_s2_mmu *mmu)
asm(ALTERNATIVE("nop", "isb", ARM64_WORKAROUND_SPECULATIVE_AT));
}
static __always_inline void __load_guest_stage2(struct kvm_s2_mmu *mmu)
{
__load_stage2(mmu, kern_hyp_va(mmu->arch)->vtcr);
}
static inline struct kvm *kvm_s2_mmu_to_kvm(struct kvm_s2_mmu *mmu)
{
return container_of(mmu->arch, struct kvm, arch);