KVM: x86: Fix host_mapping_level()
When found a error hva, should not return PAGE_SIZE but the level... Also clean up the coding style of the following loop. Cc: stable@kernel.org Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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1 changed files with 2 additions and 4 deletions
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@ -477,7 +477,7 @@ static int host_mapping_level(struct kvm *kvm, gfn_t gfn)
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addr = gfn_to_hva(kvm, gfn);
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if (kvm_is_error_hva(addr))
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return page_size;
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return PT_PAGE_TABLE_LEVEL;
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down_read(¤t->mm->mmap_sem);
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vma = find_vma(current->mm, addr);
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@ -515,11 +515,9 @@ static int mapping_level(struct kvm_vcpu *vcpu, gfn_t large_gfn)
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if (host_level == PT_PAGE_TABLE_LEVEL)
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return host_level;
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for (level = PT_DIRECTORY_LEVEL; level <= host_level; ++level) {
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for (level = PT_DIRECTORY_LEVEL; level <= host_level; ++level)
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if (has_wrprotected_page(vcpu->kvm, large_gfn, level))
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break;
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}
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return level - 1;
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}
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