Sean Christopherson f6ab0107a4 KVM: x86/mmu: Fix struct guest_walker arrays for 5-level paging ... Define PT_MAX_FULL_LEVELS as PT64_ROOT_MAX_LEVEL, i.e. 5, to fix shadow paging for 5-level guest page tables. PT_MAX_FULL_LEVELS is used to size the arrays that track guest pages table information, i.e. using a "max levels" of 4 causes KVM to access garbage beyond the end of an array when querying state for level 5 entries. E.g. FNAME(gpte_changed) will read garbage and most likely return %true for a level 5 entry, soft-hanging the guest because FNAME(fetch) will restart the guest instead of creating SPTEs because it thinks the guest PTE has changed. Note, KVM doesn't yet support 5-level nested EPT, so PT_MAX_FULL_LEVELS gets to stay "4" for the PTTYPE_EPT case. Fixes: 855feb6736 ("KVM: MMU: Add 5 level EPT & Shadow page table support.") Cc: stable@vger.kernel.org Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2020-02-12 20:09:44 +01:00
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mmu.c	KVM: x86/mmu: Avoid retpoline on ->page_fault() with TDP	2020-02-12 20:09:42 +01:00
page_track.c	KVM: x86: create mmu/ subdirectory	2019-11-21 12:03:50 +01:00
paging_tmpl.h	KVM: x86/mmu: Fix struct guest_walker arrays for 5-level paging	2020-02-12 20:09:44 +01:00