tree a0197e64b4ef62e41e75f157639737acd8c611fd
parent 0079fe89b3ceebf3fcfd42d7fa687a57215433db
author Krish Sadhukhan <krish.sadhukhan@oracle.com> 1598662640 +0000
committer Paolo Bonzini <pbonzini@redhat.com> 1599838588 -0400

nSVM: Add a test for NPF due to P=0 in NPT entry

If the P (present) bit in an NPT entry is cleared, accesses to the
corresponding guest physical address will fail and the guest will exit to
the host with an exit code of 0x400 (#NPF). The test checks for bits 2
and 32 to be set (respectively because all NPT accesses are considered
user accesses, and because the test encounters the P=0 entry while
translating the final guest physical address and not a guest page table.

Signed-off-by: Krish Sadhukhan <krish.sadhukhan@oracle.com>
Message-Id: <20200829005720.5325-1-krish.sadhukhan@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>