tree f0bb8eca9f517e12b3fff5ea9ed53d6b7eed2844
parent 26e673c3003bc8f24bdbbdcb8bc91a78556f579a
author Joerg Roedel <joerg.roedel@amd.com> 1283441385 +0200
committer Avi Kivity <avi@redhat.com> 1287910343 +0200

KVM: MMU: Fix 32 bit legacy paging with NPT

This patch fixes 32 bit legacy paging with NPT enabled. The
mmu_check_root call on the top-level of the loop causes
root_gfn to take values (in the tdp_enabled path) which are
outside of guest memory. So the mmu_check_root call fails at
some point in the loop interation causing the guest to
tiple-fault.
This patch changes the mmu_check_root calls to the places
where they are really necessary. As a side-effect it
introduces a check for the root of a pae page table too.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>