• Paolo Bonzini's avatar
    KVM: x86: bit 8 of non-leaf PDPEs is not reserved · 5ecad245
    Paolo Bonzini authored
    Bit 8 would be the "global" bit, which does not quite make sense for non-leaf
    page table entries.  Intel ignores it; AMD ignores it in PDEs and PDPEs, but
    reserves it in PML4Es.
    
    Probably, earlier versions of the AMD manual documented it as reserved in PDPEs
    as well, and that behavior made it into KVM as well as kvm-unit-tests; fix it.
    
    Cc: stable@vger.kernel.org
    Reported-by: default avatarNadav Amit <namit@vmware.com>
    Fixes: a0c0feb5 ("KVM: x86: reserve bit 8 of non-leaf PDPEs and PML4Es in 64-bit mode on AMD", 2014-09-03)
    Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
    5ecad245
mmu.c 169 KB