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| author |   Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> | 2011-11-14 18:21:34 +0900 |
|---|---|---|
| committer |   Avi Kivity <avi@redhat.com> | 2011-12-27 11:17:13 +0200 |
| commit | d6eebf8b80316ea61718dc115cd6a20c16195327 (patch) | |
| tree | a4975b243ee0137650774a6ea86c1dbc3dc9fbf0 /arch/x86/kvm | |
| parent | KVM: Use kmemdup rather than duplicating its implementation (diff) | |
| download | linux-dev-d6eebf8b80316ea61718dc115cd6a20c16195327.tar.xz linux-dev-d6eebf8b80316ea61718dc115cd6a20c16195327.zip | |
KVM: MMU: Clean up BUG_ON() conditions in rmap_write_protect()
Remove redundant checks and use is_large_pte() macro.
Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm')
| -rw-r--r-- | arch/x86/kvm/mmu.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index a9b3a32bed08..973f25480afa 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -1027,7 +1027,6 @@ static int rmap_write_protect(struct kvm *kvm, u64 gfn) spte = rmap_next(kvm, rmapp, NULL); while (spte) { - BUG_ON(!spte); BUG_ON(!(*spte & PT_PRESENT_MASK)); rmap_printk("rmap_write_protect: spte %p %llx\n", spte, *spte); if (is_writable_pte(*spte)) { @@ -1043,9 +1042,8 @@ static int rmap_write_protect(struct kvm *kvm, u64 gfn) rmapp = gfn_to_rmap(kvm, gfn, i); spte = rmap_next(kvm, rmapp, NULL); while (spte) { - BUG_ON(!spte); BUG_ON(!(*spte & PT_PRESENT_MASK)); - BUG_ON((*spte & (PT_PAGE_SIZE_MASK|PT_PRESENT_MASK)) != (PT_PAGE_SIZE_MASK|PT_PRESENT_MASK)); + BUG_ON(!is_large_pte(*spte)); pgprintk("rmap_write_protect(large): spte %p %llx %lld\n", spte, *spte, gfn); if (is_writable_pte(*spte)) { drop_spte(kvm, spte); |