From: David Stevens <stevensd@xxxxxxxxxxxx>
Covert usages of the deprecated gfn_to_pfn functions to the new
gfn_to_pfn_page functions.
Signed-off-by: David Stevens <stevensd@xxxxxxxxxxxx>
---
arch/arm64/kvm/mmu.c | 26 ++++++++++++++++----------
1 file changed, 16 insertions(+), 10 deletions(-)
diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c
index 0625bf2353c2..56859999b211 100644
--- a/arch/arm64/kvm/mmu.c
+++ b/arch/arm64/kvm/mmu.c
@@ -782,7 +782,7 @@ static bool fault_supports_stage2_huge_mapping(struct kvm_memory_slot *memslot,
static unsigned long
transparent_hugepage_adjust(struct kvm_memory_slot *memslot,
unsigned long hva, kvm_pfn_t *pfnp,
- phys_addr_t *ipap)
+ struct page **page, phys_addr_t *ipap)
{
kvm_pfn_t pfn = *pfnp;
@@ -791,7 +791,7 @@ transparent_hugepage_adjust(struct kvm_memory_slot *memslot,
* sure that the HVA and IPA are sufficiently aligned and that the
* block map is contained within the memslot.
*/
- if (kvm_is_transparent_hugepage(pfn) &&
+ if (*page && kvm_is_transparent_hugepage(pfn) &&
fault_supports_stage2_huge_mapping(memslot, hva, PMD_SIZE)) {
/*
* The address we faulted on is backed by a transparent huge
@@ -812,10 +812,11 @@ transparent_hugepage_adjust(struct kvm_memory_slot *memslot,
* page accordingly.
*/
*ipap &= PMD_MASK;
- kvm_release_pfn_clean(pfn);
+ put_page(*page);
pfn &= ~(PTRS_PER_PMD - 1);
- kvm_get_pfn(pfn);
*pfnp = pfn;
+ *page = pfn_to_page(pfn);
+ get_page(*page);
return PMD_SIZE;
}
@@ -908,6 +909,7 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa,
short vma_shift;
gfn_t gfn;
kvm_pfn_t pfn;
+ struct page *page;
bool logging_active = memslot_is_logging(memslot);
unsigned long fault_level = kvm_vcpu_trap_get_fault_level(vcpu);
unsigned long vma_pagesize, fault_granule;
@@ -1009,8 +1011,8 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa,
*/
smp_rmb();
- pfn = __gfn_to_pfn_memslot(memslot, gfn, false, NULL,
- write_fault, &writable, NULL);
+ pfn = __gfn_to_pfn_page_memslot(memslot, gfn, false, NULL,
+ write_fault, &writable, NULL, &page);
if (pfn == KVM_PFN_ERR_HWPOISON) {
kvm_send_hwpoison_signal(hva, vma_shift);
return 0;
@@ -1052,7 +1054,8 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa,
*/
if (vma_pagesize == PAGE_SIZE && !(force_pte || device))
vma_pagesize = transparent_hugepage_adjust(memslot, hva,
- &pfn, &fault_ipa);
+ &pfn, &page,
+ &fault_ipa);
if (fault_status != FSC_PERM && !device && kvm_has_mte(kvm)) {
/* Check the VMM hasn't introduced a new VM_SHARED VMA */
@@ -1090,14 +1093,17 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa,
/* Mark the page dirty only if the fault is handled successfully */
if (writable && !ret) {
- kvm_set_pfn_dirty(pfn);
+ if (page)
+ kvm_set_pfn_dirty(pfn);
mark_page_dirty_in_slot(kvm, memslot, gfn);
}
out_unlock:
spin_unlock(&kvm->mmu_lock);
- kvm_set_pfn_accessed(pfn);
- kvm_release_pfn_clean(pfn);
+ if (page) {
+ kvm_set_pfn_accessed(pfn);
+ put_page(page);
+ }
return ret != -EAGAIN ? ret : 0;
}
--
2.33.0.rc2.250.ged5fa647cd-goog
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