Peter Feiner ac8d57e573 kvm: x86: mmu: allow A/D bits to be disabled in an mmu ... Adds the plumbing to disable A/D bits in the MMU based on a new role bit, ad_disabled. When A/D is disabled, the MMU operates as though A/D aren't available (i.e., using access tracking faults instead). To avoid SP -> kvm_mmu_page.role.ad_disabled lookups all over the place, A/D disablement is now stored in the SPTE. This state is stored in the SPTE by tweaking the use of SPTE_SPECIAL_MASK for access tracking. Rather than just setting SPTE_SPECIAL_MASK when an access-tracking SPTE is non-present, we now always set SPTE_SPECIAL_MASK for access-tracking SPTEs. Signed-off-by: Peter Feiner <pfeiner@google.com> [Use role.ad_disabled even for direct (non-shadow) EPT page tables. Add documentation and a few MMU_WARN_ONs. - Paolo] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2017-07-03 11:19:54 +02:00
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kvm	kvm: x86: mmu: allow A/D bits to be disabled in an mmu	2017-07-03 11:19:54 +02:00
uml	Documentation: Update path to sysrq.txt	2017-03-03 15:48:38 -07:00
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paravirt_ops.txt