Sean Christopherson 5c64aba517 KVM: x86/mmu: Drop exec/NX check from "page fault can be fast" ... Tweak the "page fault can be fast" logic to explicitly check for !PRESENT faults in the access tracking case, and drop the exec/NX check that becomes redundant as a result. No sane hardware will generate an access that is both an instruct fetch and a write, i.e. it's a waste of cycles. If hardware goes off the rails, or KVM runs under a misguided hypervisor, spuriously running throught fast path is benign (KVM has been uknowingly being doing exactly that for years). Signed-off-by: Sean Christopherson <seanjc@google.com> Message-Id: <20220423034752.1161007-6-seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2022-05-12 09:51:41 -04:00
..
mmu_internal.h	KVM: x86/mmu: Zap invalidated roots via asynchronous worker	2022-03-08 10:55:27 -05:00
mmu.c	KVM: x86/mmu: Drop exec/NX check from "page fault can be fast"	2022-05-12 09:51:41 -04:00
mmutrace.h	KVM: x86/mmu: Add tracepoint for splitting huge pages	2022-02-10 13:50:43 -05:00
page_track.c	KVM: use __vcalloc for very large allocations	2022-03-08 09:30:57 -05:00
paging_tmpl.h	KVM: X86/MMU: Fix shadowing 5-level NPT for 4-level NPT L1 guest	2022-04-29 12:50:00 -04:00
paging.h	KVM: x86/mmu: Do not apply HPA (memory encryption) mask to GPAs	2021-07-14 12:17:56 -04:00
spte.c	Merge branch 'kvm-tdp-mmu-atomicity-fix' into HEAD	2022-05-03 07:29:30 -04:00
spte.h	KVM: x86/mmu: Don't attempt fast page fault just because EPT is in use	2022-05-12 09:51:41 -04:00
tdp_iter.c	KVM: x86/mmu: Add helpers to read/write TDP MMU SPTEs and document RCU	2022-03-08 09:31:52 -05:00
tdp_iter.h	KVM: x86/mmu: Use atomic XCHG to write TDP MMU SPTEs with volatile bits	2022-05-03 07:22:32 -04:00
tdp_mmu.c	KVM: x86/mmu: Don't attempt fast page fault just because EPT is in use	2022-05-12 09:51:41 -04:00
tdp_mmu.h	KVM: x86/mmu: Zap only TDP MMU leafs in zap range and mmu_notifier unmap	2022-04-02 05:34:39 -04:00