From: Joerg Roedel <joerg.roe...@amd.com>
The following code flow is unnecessary:
if (largepage)
was_rmapped = is_large_pte(*shadow_pte);
else
was_rmapped = 1;
The is_large_pte() function will always evaluate to one here because the
(largepage && !is_large_pte) case is already handled in the first
if-clause. So we can remove this check and set was_rmapped to one always
here.
Signed-off-by: Joerg Roedel <joerg.roe...@amd.com>
Acked-by: Marcelo Tosatti <mtosa...@redhat.com>
Signed-off-by: Avi Kivity <a...@redhat.com>
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index ef060ec..c90b4b2 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -1791,12 +1791,8 @@ static void mmu_set_spte(struct kvm_vcpu *vcpu, u64
*shadow_pte,
pgprintk("hfn old %lx new %lx\n",
spte_to_pfn(*shadow_pte), pfn);
rmap_remove(vcpu->kvm, shadow_pte);
- } else {
- if (largepage)
- was_rmapped = is_large_pte(*shadow_pte);
- else
- was_rmapped = 1;
- }
+ } else
+ was_rmapped = 1;
}
if (set_spte(vcpu, shadow_pte, pte_access, user_fault, write_fault,
dirty, largepage, global, gfn, pfn, speculative, true)) {
--
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