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KVM: MMU: Fix and clean up for_each_gfn_* macros

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The expression (sp)->gfn should not be expanded using @gfn.
Although no user of these macros passes a string other than gfn now,
this should be fixed before anyone sees strange errors.

Note: ignored the following checkpatch errors:
  ERROR: Macros with complex values should be enclosed in parenthesis
  ERROR: trailing statements should be on next line

Reviewed-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Takuya Yoshikawa <yoshikawa_takuya_b1@lab.ntt.co.jp>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This commit is contained in:
Takuya Yoshikawa 2013-03-06 16:05:07 +09:00 committed by Marcelo Tosatti
parent 0a75ca277c
commit 1044b03034
1 changed files with 7 additions and 9 deletions
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16
arch/x86/kvm/mmu.c
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@ -1644,16 +1644,14 @@ static int kvm_mmu_prepare_zap_page(struct kvm *kvm, struct kvm_mmu_page *sp,
static void kvm_mmu_commit_zap_page(struct kvm *kvm,
struct list_head *invalid_list);
#define for_each_gfn_sp(kvm, sp, gfn) \
hlist_for_each_entry(sp, \
&(kvm)->arch.mmu_page_hash[kvm_page_table_hashfn(gfn)], hash_link) \
if ((sp)->gfn != (gfn)) {} else
#define for_each_gfn_sp(_kvm, _sp, _gfn) \
hlist_for_each_entry(_sp, \
&(_kvm)->arch.mmu_page_hash[kvm_page_table_hashfn(_gfn)], hash_link) \
if ((_sp)->gfn != (_gfn)) {} else
#define for_each_gfn_indirect_valid_sp(kvm, sp, gfn) \
hlist_for_each_entry(sp, \
&(kvm)->arch.mmu_page_hash[kvm_page_table_hashfn(gfn)], hash_link) \
if ((sp)->gfn != (gfn) || (sp)->role.direct || \
(sp)->role.invalid) {} else
#define for_each_gfn_indirect_valid_sp(_kvm, _sp, _gfn) \
for_each_gfn_sp(_kvm, _sp, _gfn) \
if ((_sp)->role.direct || (_sp)->role.invalid) {} else
/* @sp->gfn should be write-protected at the call site */
static int __kvm_sync_page(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,