KVM: MMU: Simplify nonpaging_map()

Instead of passing an hpa, pass a regular struct page.

Signed-off-by: Avi Kivity <avi@qumranet.com>

diff --git a/drivers/kvm/mmu.c b/drivers/kvm/mmu.c
index 1dcffc49eff8677de1156b367f3fe08819118a5f..1965185bbe23fd31a23c883dcc4a5a702a6b2513 100644 (file)
--- a/drivers/kvm/mmu.c
+++ b/drivers/kvm/mmu.c
@@ -903,13 +903,11 @@ static void nonpaging_new_cr3(struct kvm_vcpu *vcpu)
 {
 }
 
-static int nonpaging_map(struct kvm_vcpu *vcpu, gva_t v, hpa_t p)
+static int nonpaging_map(struct kvm_vcpu *vcpu, gva_t v, struct page *page)
 {
        int level = PT32E_ROOT_LEVEL;
        hpa_t table_addr = vcpu->mmu.root_hpa;
-       struct page *page;
 
-       page = pfn_to_page(p >> PAGE_SHIFT);
        for (; ; level--) {
                u32 index = PT64_INDEX(v, level);
                u64 *table;
@@ -930,8 +928,9 @@ static int nonpaging_map(struct kvm_vcpu *vcpu, gva_t v, hpa_t p)
                        mark_page_dirty(vcpu->kvm, v >> PAGE_SHIFT);
                        page_header_update_slot(vcpu->kvm, table,
                                                v >> PAGE_SHIFT);
-                       table[index] = p | PT_PRESENT_MASK | PT_WRITABLE_MASK |
-                                                               PT_USER_MASK;
+                       table[index] = page_to_phys(page)
+                               | PT_PRESENT_MASK | PT_WRITABLE_MASK
+                               | PT_USER_MASK;
                        if (!was_rmapped)
                                rmap_add(vcpu, &table[index], v >> PAGE_SHIFT);
                        else
@@ -1050,10 +1049,9 @@ static gpa_t nonpaging_gva_to_gpa(struct kvm_vcpu *vcpu, gva_t vaddr)
 }
 
 static int nonpaging_page_fault(struct kvm_vcpu *vcpu, gva_t gva,
-                              u32 error_code)
+                               u32 error_code)
 {
-       gpa_t addr = gva;
-       hpa_t paddr;
+       struct page *page;
        int r;
 
        r = mmu_topup_memory_caches(vcpu);
@@ -1063,16 +1061,14 @@ static int nonpaging_page_fault(struct kvm_vcpu *vcpu, gva_t gva,
        ASSERT(vcpu);
        ASSERT(VALID_PAGE(vcpu->mmu.root_hpa));
 
+       page = gfn_to_page(vcpu->kvm, gva >> PAGE_SHIFT);
 
-       paddr = gpa_to_hpa(vcpu->kvm, addr & PT64_BASE_ADDR_MASK);
-
-       if (is_error_hpa(paddr)) {
-               kvm_release_page_clean(pfn_to_page((paddr & PT64_BASE_ADDR_MASK)
-                                      >> PAGE_SHIFT));
+       if (is_error_page(page)) {
+               kvm_release_page_clean(page);
                return 1;
        }
 
-       return nonpaging_map(vcpu, addr & PAGE_MASK, paddr);
+       return nonpaging_map(vcpu, gva & PAGE_MASK, page);
 }
 
 static void nonpaging_free(struct kvm_vcpu *vcpu)