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authorMarc Zyngier <marc.zyngier@arm.com>2017-10-23 17:11:15 +0100
committerChristoffer Dall <christoffer.dall@linaro.org>2018-01-08 15:20:43 +0100
commita15f693935a9f1fec8241cafaca27be4483d4464 (patch)
treeb395498be5422e08b73e90e59b94484d291f1174 /virt
parentd68119864ef4b253a585a1c897cda6936d4b5de9 (diff)
downloadlinux-next-a15f693935a9f1fec8241cafaca27be4483d4464.tar.gz
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 'virt')
-rw-r--r--virt/kvm/arm/mmu.c20
1 files changed, 15 insertions, 5 deletions
diff --git a/virt/kvm/arm/mmu.c b/virt/kvm/arm/mmu.c
index b36945d49986..2174244f6317 100644
--- a/virt/kvm/arm/mmu.c
+++ b/virt/kvm/arm/mmu.c
@@ -1257,10 +1257,16 @@ void kvm_arch_mmu_enable_log_dirty_pt_masked(struct kvm *kvm,
kvm_mmu_write_protect_pt_masked(kvm, slot, gfn_offset, mask);
}
-static void coherent_cache_guest_page(struct kvm_vcpu *vcpu, kvm_pfn_t pfn,
- unsigned long size)
+static void clean_dcache_guest_page(struct kvm_vcpu *vcpu, kvm_pfn_t pfn,
+ unsigned long size)
{
- __coherent_cache_guest_page(vcpu, pfn, size);
+ __clean_dcache_guest_page(vcpu, pfn, size);
+}
+
+static void invalidate_icache_guest_page(struct kvm_vcpu *vcpu, kvm_pfn_t pfn,
+ unsigned long size)
+{
+ __invalidate_icache_guest_page(vcpu, pfn, size);
}
static void kvm_send_hwpoison_signal(unsigned long address,
@@ -1391,7 +1397,9 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa,
new_pmd = kvm_s2pmd_mkwrite(new_pmd);
kvm_set_pfn_dirty(pfn);
}
- coherent_cache_guest_page(vcpu, pfn, PMD_SIZE);
+ clean_dcache_guest_page(vcpu, pfn, PMD_SIZE);
+ invalidate_icache_guest_page(vcpu, pfn, PMD_SIZE);
+
ret = stage2_set_pmd_huge(kvm, memcache, fault_ipa, &new_pmd);
} else {
pte_t new_pte = pfn_pte(pfn, mem_type);
@@ -1401,7 +1409,9 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa,
kvm_set_pfn_dirty(pfn);
mark_page_dirty(kvm, gfn);
}
- coherent_cache_guest_page(vcpu, pfn, PAGE_SIZE);
+ clean_dcache_guest_page(vcpu, pfn, PAGE_SIZE);
+ invalidate_icache_guest_page(vcpu, pfn, PAGE_SIZE);
+
ret = stage2_set_pte(kvm, memcache, fault_ipa, &new_pte, flags);
}