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| author | Xiao Guangrong | 2016-02-24 10:51:06 +0100 |
|---|---|---|
| committer | Paolo Bonzini | 2016-03-03 14:36:19 +0100 |
| commit | 92f94f1e9e509caa564353c516c904278999e350 (patch) | |
| tree | 620903350857ed81ca8e4b9d734b99c29e14cfeb /arch/x86/kvm/x86.c | |
| parent | kvm: x86: Check dest_map->vector to match eoi signals for rtc (diff) | |
| download | kernel-qcow2-linux-92f94f1e9e509caa564353c516c904278999e350.tar.gz kernel-qcow2-linux-92f94f1e9e509caa564353c516c904278999e350.tar.xz kernel-qcow2-linux-92f94f1e9e509caa564353c516c904278999e350.zip | |
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 'arch/x86/kvm/x86.c')
| -rw-r--r-- | arch/x86/kvm/x86.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 2fb92c0af803..668625e47102 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -7879,6 +7879,7 @@ int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, int i; for (i = 0; i < KVM_NR_PAGE_SIZES; ++i) { + struct kvm_lpage_info *linfo; unsigned long ugfn; int lpages; int level = i + 1; @@ -7893,15 +7894,16 @@ int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, if (i == 0) continue; - slot->arch.lpage_info[i - 1] = kvm_kvzalloc(lpages * - sizeof(*slot->arch.lpage_info[i - 1])); - if (!slot->arch.lpage_info[i - 1]) + linfo = kvm_kvzalloc(lpages * sizeof(*linfo)); + if (!linfo) goto out_free; + slot->arch.lpage_info[i - 1] = linfo; + if (slot->base_gfn & (KVM_PAGES_PER_HPAGE(level) - 1)) - slot->arch.lpage_info[i - 1][0].write_count = 1; + linfo[0].disallow_lpage = 1; if ((slot->base_gfn + npages) & (KVM_PAGES_PER_HPAGE(level) - 1)) - slot->arch.lpage_info[i - 1][lpages - 1].write_count = 1; + linfo[lpages - 1].disallow_lpage = 1; ugfn = slot->userspace_addr >> PAGE_SHIFT; /* * If the gfn and userspace address are not aligned wrt each @@ -7913,7 +7915,7 @@ int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, unsigned long j; for (j = 0; j < lpages; ++j) - slot->arch.lpage_info[i - 1][j].write_count = 1; + linfo[j].disallow_lpage = 1; } } |