[PATCH 0/3] KVM: x86: guest.MAXPHYADDR fix and related cleanup

[Sean Christopherson <seanjc@xxxxxxxxxx>]

Fix a bug exposed by syzkaller where running with guest.MAXPHYADDR < 32
leads KVM injecting a garbage exception due to mishandling an illegal GPA
check when "translating" a non-nested GPA.

Clean up tangentially related code in load_pdptrs() to discourage reading
guest memory using a potentially-nested GPA.

Sean Christopherson (3):
  Revert "KVM: x86: mmu: Add guest physical address check in
    translate_gpa()"
  KVM: x86: Subsume nested GPA read helper into load_pdptrs()
  KVM: x86: Simplify retrieving the page offset when loading PDTPRs

 arch/x86/include/asm/kvm_host.h |  3 --
 arch/x86/kvm/mmu/mmu.c          |  6 ----
 arch/x86/kvm/x86.c              | 56 +++++++++++----------------------
 3 files changed, 18 insertions(+), 47 deletions(-)

-- 
2.33.0.259.gc128427fd7-goog