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| author | Marc Zyngier <marc.zyngier@arm.com> | 2017-10-23 17:11:15 +0100 |
|---|---|---|
| committer | Christoffer Dall <christoffer.dall@linaro.org> | 2018-01-08 15:20:43 +0100 |
| commit | a15f693935a9f1fec8241cafaca27be4483d4464 (patch) | |
| tree | b395498be5422e08b73e90e59b94484d291f1174 /arch/arm64 | |
| parent | d68119864ef4b253a585a1c897cda6936d4b5de9 (diff) | |
| download | linux-a15f693935a9f1fec8241cafaca27be4483d4464.tar.gz linux-a15f693935a9f1fec8241cafaca27be4483d4464.tar.bz2 linux-a15f693935a9f1fec8241cafaca27be4483d4464.zip | |
KVM: arm/arm64: Split dcache/icache flushing
As we're about to introduce opportunistic invalidation of the icache,
let's split dcache and icache flushing.
Acked-by: Christoffer Dall <cdall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'arch/arm64')
| -rw-r--r-- | arch/arm64/include/asm/kvm_mmu.h | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/arch/arm64/include/asm/kvm_mmu.h b/arch/arm64/include/asm/kvm_mmu.h index 672c8684d5c2..8034b96fb3a4 100644 --- a/arch/arm64/include/asm/kvm_mmu.h +++ b/arch/arm64/include/asm/kvm_mmu.h @@ -230,19 +230,26 @@ static inline bool vcpu_has_cache_enabled(struct kvm_vcpu *vcpu) return (vcpu_sys_reg(vcpu, SCTLR_EL1) & 0b101) == 0b101; } -static inline void __coherent_cache_guest_page(struct kvm_vcpu *vcpu, - kvm_pfn_t pfn, - unsigned long size) +static inline void __clean_dcache_guest_page(struct kvm_vcpu *vcpu, + kvm_pfn_t pfn, + unsigned long size) { void *va = page_address(pfn_to_page(pfn)); kvm_flush_dcache_to_poc(va, size); +} +static inline void __invalidate_icache_guest_page(struct kvm_vcpu *vcpu, + kvm_pfn_t pfn, + unsigned long size) +{ if (icache_is_aliasing()) { /* any kind of VIPT cache */ __flush_icache_all(); } else if (is_kernel_in_hyp_mode() || !icache_is_vpipt()) { /* PIPT or VPIPT at EL2 (see comment in __kvm_tlb_flush_vmid_ipa) */ + void *va = page_address(pfn_to_page(pfn)); + flush_icache_range((unsigned long)va, (unsigned long)va + size); } |