KVM: do not treat noslot pfn as a error pfn

This patch filters noslot pfn out from error pfns based on Marcelo comment:
noslot pfn is not a error pfn

After this patch,
- is_noslot_pfn indicates that the gfn is not in slot
- is_error_pfn indicates that the gfn is in slot but the error is occurred
  when translate the gfn to pfn
- is_error_noslot_pfn indicates that the pfn either it is error pfns or it
  is noslot pfn
And is_invalid_pfn can be removed, it makes the code more clean

Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index aabb1289ff04..b875a9ed9b8e 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -2699,7 +2699,7 @@ static void transparent_hugepage_adjust(struct kvm_vcpu *vcpu,
          * PT_PAGE_TABLE_LEVEL and there would be no adjustment done
          * here.
          */
-        if (!is_error_pfn(pfn) && !kvm_is_mmio_pfn(pfn) &&
+        if (!is_error_noslot_pfn(pfn) && !kvm_is_mmio_pfn(pfn) &&
             level == PT_PAGE_TABLE_LEVEL &&
             PageTransCompound(pfn_to_page(pfn)) &&
             !has_wrprotected_page(vcpu->kvm, gfn, PT_DIRECTORY_LEVEL)) {
@@ -2733,7 +2733,7 @@ static bool handle_abnormal_pfn(struct kvm_vcpu *vcpu, gva_t gva, gfn_t gfn,
         bool ret = true;
 
         /* The pfn is invalid, report the error! */
-        if (unlikely(is_invalid_pfn(pfn))) {
+        if (unlikely(is_error_pfn(pfn))) {
                 *ret_val = kvm_handle_bad_page(vcpu, gfn, pfn);
                 goto exit;
         }