The user mapping doesn't have the page mapping for protected memory.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
---
arch/x86/kvm/mmu/paging_tmpl.h | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kvm/mmu/paging_tmpl.h b/arch/x86/kvm/mmu/paging_tmpl.h
index 4dd6b1e5b8cf..258a6361b9b2 100644
--- a/arch/x86/kvm/mmu/paging_tmpl.h
+++ b/arch/x86/kvm/mmu/paging_tmpl.h
@@ -397,8 +397,14 @@ static int FNAME(walk_addr_generic)(struct guest_walker *walker,
goto error;
ptep_user = (pt_element_t __user *)((void *)host_addr + offset);
- if (unlikely(__get_user(pte, ptep_user)))
- goto error;
+ if (vcpu->kvm->mem_protected) {
+ if (copy_from_guest(&pte, host_addr + offset,
+ sizeof(pte), true))
+ goto error;
+ } else {
+ if (unlikely(__get_user(pte, ptep_user)))
+ goto error;
+ }
walker->ptep_user[walker->level - 1] = ptep_user;
trace_kvm_mmu_paging_element(pte, walker->level);
--
2.26.2
