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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>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210319100146.1149909-24-qperret@google.com
This commit is contained in:
Quentin Perret 2021-03-19 10:01:31 +00:00 committed by Marc Zyngier
parent bcb25a2b86
commit 6ec7e56d32
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);