KVM: MMU: Add link_shadow_page() helper
To simplify the process of fetching an spte, add a helper that links
a shadow page to an spte.
Reviewed-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h
index 1cea41c..36dc074 100644
--- a/arch/x86/kvm/paging_tmpl.h
+++ b/arch/x86/kvm/paging_tmpl.h
@@ -309,7 +309,7 @@
{
unsigned access = gw->pt_access;
struct kvm_mmu_page *sp;
- u64 spte, *sptep = NULL;
+ u64 *sptep = NULL;
int direct;
gfn_t table_gfn;
int r;
@@ -395,10 +395,7 @@
}
}
- spte = __pa(sp->spt)
- | PT_PRESENT_MASK | PT_ACCESSED_MASK
- | PT_WRITABLE_MASK | PT_USER_MASK;
- *sptep = spte;
+ link_shadow_page(sptep, sp);
}
return sptep;