KVM, pkeys: introduce pkru_mask to cache conditions

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PKEYS defines a new status bit in the PFEC. PFEC.PK (bit 5), if some
conditions is true, the fault is considered as a PKU violation.
pkru_mask indicates if we need to check PKRU.ADi and PKRU.WDi, and
does cache some conditions for permission_fault.

[ Huaitong: Xiao helps to modify many sections. ]

Signed-off-by: Huaitong Han <huaitong.han@intel.com>
Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Huaitong Han 2016-03-22 16:51:19 +08:00 • committed by Paolo Bonzini

parent 1be0e61c1f

commit 2d344105f5

2 changed files with 88 additions and 0 deletions

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8

arch/x86/include/asm/kvm_host.h

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80

arch/x86/kvm/mmu.c

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