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authorPunit Agrawal <punit.agrawal@arm.com>2018-12-11 17:10:36 +0000
committerMarc Zyngier <marc.zyngier@arm.com>2018-12-18 15:14:47 +0000
commitf8df73388ee25b5e5f1d26249202e7126ca8139d (patch)
tree8eea39591f050f221ff263b4fb2d2381ee395263 /virt
parent6396b852e46e562f4742ed0a9042b537eb26b8aa (diff)
downloadlinux-stericsson-f8df73388ee25b5e5f1d26249202e7126ca8139d.tar.gz
KVM: arm/arm64: Introduce helpers to manipulate page table entries
Introduce helpers to abstract architectural handling of the conversion of pfn to page table entries and marking a PMD page table entry as a block entry. The helpers are introduced in preparation for supporting PUD hugepages at stage 2 - which are supported on arm64 but do not exist on arm. Signed-off-by: Punit Agrawal <punit.agrawal@arm.com> Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Acked-by: Christoffer Dall <christoffer.dall@arm.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Reviewed-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/arm/mmu.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/virt/kvm/arm/mmu.c b/virt/kvm/arm/mmu.c
index 6912529946fb..fb5325f7a1ac 100644
--- a/virt/kvm/arm/mmu.c
+++ b/virt/kvm/arm/mmu.c
@@ -607,7 +607,7 @@ static void create_hyp_pte_mappings(pmd_t *pmd, unsigned long start,
addr = start;
do {
pte = pte_offset_kernel(pmd, addr);
- kvm_set_pte(pte, pfn_pte(pfn, prot));
+ kvm_set_pte(pte, kvm_pfn_pte(pfn, prot));
get_page(virt_to_page(pte));
pfn++;
} while (addr += PAGE_SIZE, addr != end);
@@ -1202,7 +1202,7 @@ int kvm_phys_addr_ioremap(struct kvm *kvm, phys_addr_t guest_ipa,
pfn = __phys_to_pfn(pa);
for (addr = guest_ipa; addr < end; addr += PAGE_SIZE) {
- pte_t pte = pfn_pte(pfn, PAGE_S2_DEVICE);
+ pte_t pte = kvm_pfn_pte(pfn, PAGE_S2_DEVICE);
if (writable)
pte = kvm_s2pte_mkwrite(pte);
@@ -1611,8 +1611,10 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa,
(fault_status == FSC_PERM && stage2_is_exec(kvm, fault_ipa));
if (vma_pagesize == PMD_SIZE) {
- pmd_t new_pmd = pfn_pmd(pfn, mem_type);
- new_pmd = pmd_mkhuge(new_pmd);
+ pmd_t new_pmd = kvm_pfn_pmd(pfn, mem_type);
+
+ new_pmd = kvm_pmd_mkhuge(new_pmd);
+
if (writable)
new_pmd = kvm_s2pmd_mkwrite(new_pmd);
@@ -1621,7 +1623,7 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa,
ret = stage2_set_pmd_huge(kvm, memcache, fault_ipa, &new_pmd);
} else {
- pte_t new_pte = pfn_pte(pfn, mem_type);
+ pte_t new_pte = kvm_pfn_pte(pfn, mem_type);
if (writable) {
new_pte = kvm_s2pte_mkwrite(new_pte);
@@ -1878,7 +1880,7 @@ void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte)
* just like a translation fault and clean the cache to the PoC.
*/
clean_dcache_guest_page(pfn, PAGE_SIZE);
- stage2_pte = pfn_pte(pfn, PAGE_S2);
+ stage2_pte = kvm_pfn_pte(pfn, PAGE_S2);
handle_hva_to_gpa(kvm, hva, end, &kvm_set_spte_handler, &stage2_pte);
}