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author | Xiao Guangrong <guangrong.xiao@linux.intel.com> | 2016-02-24 17:51:06 +0800 |
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committer | Paolo Bonzini <pbonzini@redhat.com> | 2016-03-03 14:36:19 +0100 |
commit | 92f94f1e9e509caa564353c516c904278999e350 (patch) | |
tree | 620903350857ed81ca8e4b9d734b99c29e14cfeb /Documentation | |
parent | 4d99ba898dd0c521ca6cdfdde55c9b58aea3cb3d (diff) | |
download | op-kernel-dev-92f94f1e9e509caa564353c516c904278999e350.zip op-kernel-dev-92f94f1e9e509caa564353c516c904278999e350.tar.gz |
KVM: MMU: rename has_wrprotected_page to mmu_gfn_lpage_is_disallowed
kvm_lpage_info->write_count is used to detect if the large page mapping
for the gfn on the specified level is allowed, rename it to disallow_lpage
to reflect its purpose, also we rename has_wrprotected_page() to
mmu_gfn_lpage_is_disallowed() to make the code more clearer
Later we will extend this mechanism for page tracking: if the gfn is
tracked then large mapping for that gfn on any level is not allowed.
The new name is more straightforward
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/virtual/kvm/mmu.txt | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/Documentation/virtual/kvm/mmu.txt b/Documentation/virtual/kvm/mmu.txt index daf9c0f..dda2e93 100644 --- a/Documentation/virtual/kvm/mmu.txt +++ b/Documentation/virtual/kvm/mmu.txt @@ -391,11 +391,11 @@ To instantiate a large spte, four constraints must be satisfied: write-protected pages - the guest page must be wholly contained by a single memory slot -To check the last two conditions, the mmu maintains a ->write_count set of +To check the last two conditions, the mmu maintains a ->disallow_lpage set of arrays for each memory slot and large page size. Every write protected page -causes its write_count to be incremented, thus preventing instantiation of +causes its disallow_lpage to be incremented, thus preventing instantiation of a large spte. The frames at the end of an unaligned memory slot have -artificially inflated ->write_counts so they can never be instantiated. +artificially inflated ->disallow_lpages so they can never be instantiated. Zapping all pages (page generation count) ========================================= |