KVM: do not release the error pfn
After commit a2766325cf9f9, the error pfn is replaced by the
error code, it need not be released anymore
[ The patch has been compiling tested for powerpc ]
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 d3cdf69..9651c2cd 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -2496,7 +2496,9 @@
rmap_recycle(vcpu, sptep, gfn);
}
}
- kvm_release_pfn_clean(pfn);
+
+ if (!is_error_pfn(pfn))
+ kvm_release_pfn_clean(pfn);
}
static void nonpaging_new_cr3(struct kvm_vcpu *vcpu)
@@ -2648,7 +2650,6 @@
static int kvm_handle_bad_page(struct kvm_vcpu *vcpu, gfn_t gfn, pfn_t pfn)
{
- kvm_release_pfn_clean(pfn);
if (pfn == KVM_PFN_ERR_HWPOISON) {
kvm_send_hwpoison_signal(gfn_to_hva(vcpu->kvm, gfn), current);
return 0;
@@ -3273,8 +3274,6 @@
if (!async)
return false; /* *pfn has correct page already */
- kvm_release_pfn_clean(*pfn);
-
if (!prefault && can_do_async_pf(vcpu)) {
trace_kvm_try_async_get_page(gva, gfn);
if (kvm_find_async_pf_gfn(vcpu, gfn)) {