KVM: MMU: move prefetch_invalid_gpte out of pagaing_tmp.h
The function does not depend on guest mmu mode, move it out from
paging_tmpl.h
Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 7fe1e03..3d5ca79 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -2506,6 +2506,14 @@
mmu_free_roots(vcpu);
}
+static bool is_rsvd_bits_set(struct kvm_mmu *mmu, u64 gpte, int level)
+{
+ int bit7;
+
+ bit7 = (gpte >> 7) & 1;
+ return (gpte & mmu->rsvd_bits_mask[bit7][level-1]) != 0;
+}
+
static pfn_t pte_prefetch_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn,
bool no_dirty_log)
{
@@ -2518,6 +2526,26 @@
return gfn_to_pfn_memslot_atomic(slot, gfn);
}
+static bool prefetch_invalid_gpte(struct kvm_vcpu *vcpu,
+ struct kvm_mmu_page *sp, u64 *spte,
+ u64 gpte)
+{
+ if (is_rsvd_bits_set(&vcpu->arch.mmu, gpte, PT_PAGE_TABLE_LEVEL))
+ goto no_present;
+
+ if (!is_present_gpte(gpte))
+ goto no_present;
+
+ if (!(gpte & PT_ACCESSED_MASK))
+ goto no_present;
+
+ return false;
+
+no_present:
+ drop_spte(vcpu->kvm, spte);
+ return true;
+}
+
static int direct_pte_prefetch_many(struct kvm_vcpu *vcpu,
struct kvm_mmu_page *sp,
u64 *start, u64 *end)
@@ -3395,14 +3423,6 @@
nonpaging_free(vcpu);
}
-static bool is_rsvd_bits_set(struct kvm_mmu *mmu, u64 gpte, int level)
-{
- int bit7;
-
- bit7 = (gpte >> 7) & 1;
- return (gpte & mmu->rsvd_bits_mask[bit7][level-1]) != 0;
-}
-
static inline void protect_clean_gpte(unsigned *access, unsigned gpte)
{
unsigned mask;