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linux/Documentation/virtual/kvm
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Xiao Guangrong f1c43caf6f KVM: MMU: fix SMAP virtualization 
commit 0be0226f07 upstream.

KVM may turn a user page to a kernel page when kernel writes a readonly
user page if CR0.WP = 1. This shadow page entry will be reused after
SMAP is enabled so that kernel is allowed to access this user page

Fix it by setting SMAP && !CR0.WP into shadow page's role and reset mmu
once CR4.SMAP is updated

Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
[ luis: backported to 3.16: adjusted context ]
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
History 2015-06-02 12:08:13 +01:00
..
devices KVM: s390: Exploiting generic userspace interface for cmma 2014-04-22 13:24:32 +02:00
00-INDEX Documentation/: update 00-INDEX files 2014-02-10 16:01:40 -08:00
api.txt arm/arm64: KVM: Correct KVM_ARM_VCPU_INIT power off option 2015-05-20 13:25:50 +01:00
cpuid.txt Documentation/kvm: Update cpuid documentation for steal time and pv eoi 2013-09-24 19:12:16 +02:00
hypercalls.txt KVM: doc: Fix typo in doc/virtual/kvm 2013-12-31 17:24:54 -02:00
locking.txt KVM: doc: Fix typo in doc/virtual/kvm 2013-12-31 17:24:54 -02:00
mmu.txt KVM: MMU: fix SMAP virtualization 2015-06-02 12:08:13 +01:00
msr.txt KVM: clarify kvmclock documentation 2012-09-17 14:10:23 -03:00
nested-vmx.txt KVM: nVMX: Documentation 2011-07-12 13:15:22 +03:00
ppc-pv.txt KVM: PPC: Disable NX for old magic page using guests 2014-05-30 14:26:24 +02:00
review-checklist.txt Correct occurrences of 2011-05-06 09:27:55 -07:00
s390-diag.txt KVM: s390: add documentation for diag 501 2014-04-22 13:24:51 +02:00
timekeeping.txt KVM: doc: Fix typo in doc/virtual/kvm 2013-12-31 17:24:54 -02:00