On 31/08/21 18:42, Sean Christopherson wrote:
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(-)
Queued 2 and 3 too now, thanks.
Paolo
