Sean Christopherson 5bcaf3e171 KVM: x86/mmu: Account NX huge page disallowed iff huge page was requested ... Condition the accounting of a disallowed huge NX page on the original requested level of the page being greater than the current iterator level. This does two things: accounts the page if and only if a huge page was actually disallowed, and accounts the shadow page if and only if it was the level at which the huge page was disallowed. For the latter case, the previous logic would account all shadow pages used to create the translation for the forced small page, e.g. even PML4, which can't be a huge page on current hardware, would be accounted as having been a disallowed huge page when using 5-level EPT. The overzealous accounting is purely a performance issue, i.e. the recovery thread will spuriously zap shadow pages, but otherwise the bad behavior is harmless. Cc: Junaid Shahid <junaids@google.com> Fixes: b8e8c8303f ("kvm: mmu: ITLB_MULTIHIT mitigation") Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Message-Id: <20200923183735.584-6-sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2020-09-28 07:57:41 -04:00
..
mmu_audit.c	KVM: x86/mmu: Rename page_header() to to_shadow_page()	2020-07-08 16:21:55 -04:00
mmu_internal.h	KVM: x86/mmu: Rename page_header() to to_shadow_page()	2020-07-08 16:21:55 -04:00
mmu.c	KVM: x86/mmu: Account NX huge page disallowed iff huge page was requested	2020-09-28 07:57:41 -04:00
mmutrace.h	KVM: x86/mmu: Return unique RET_PF_* values if the fault was fixed	2020-09-28 07:57:36 -04:00
page_track.c	KVM: x86/mmu: Add MMU-internal header	2020-07-08 16:21:54 -04:00
paging_tmpl.h	KVM: x86/mmu: Account NX huge page disallowed iff huge page was requested	2020-09-28 07:57:41 -04:00