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authorLai Jiangshan <jiangshan.ljs@antgroup.com>2022-12-07 20:06:16 +0800
committerPaolo Bonzini <pbonzini@redhat.com>2022-12-27 06:00:51 -0500
commita303def0fc18f0f2393b5c5f8ae3d2657a9713dc (patch)
tree7ddaa3b0c30ee9db531e091cc1c06fd03d254fc9
parente0a78525f540f9d9a44a296f307b8b74cee4c288 (diff)
kvm: Remove the unused macro KVM_MMU_READ_{,UN}LOCK()
No code is using KVM_MMU_READ_LOCK() or KVM_MMU_READ_UNLOCK(). They used to be in virt/kvm/pfncache.c: KVM_MMU_READ_LOCK(kvm); retry = mmu_notifier_retry_hva(kvm, mmu_seq, uhva); KVM_MMU_READ_UNLOCK(kvm); However, since 58cd407ca4c6 ("KVM: Fix multiple races in gfn=>pfn cache refresh", 2022-05-25) the code is only relying on the MMU notifier's invalidation count and sequence number. Signed-off-by: Lai Jiangshan <jiangshan.ljs@antgroup.com> Message-Id: <20221207120617.9409-1-jiangshanlai@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
-rw-r--r--virt/kvm/kvm_mm.h4
1 files changed, 0 insertions, 4 deletions
diff --git a/virt/kvm/kvm_mm.h b/virt/kvm/kvm_mm.h
index a1ab15006af3..180f1a09e6ba 100644
--- a/virt/kvm/kvm_mm.h
+++ b/virt/kvm/kvm_mm.h
@@ -14,14 +14,10 @@
#define KVM_MMU_LOCK_INIT(kvm) rwlock_init(&(kvm)->mmu_lock)
#define KVM_MMU_LOCK(kvm) write_lock(&(kvm)->mmu_lock)
#define KVM_MMU_UNLOCK(kvm) write_unlock(&(kvm)->mmu_lock)
-#define KVM_MMU_READ_LOCK(kvm) read_lock(&(kvm)->mmu_lock)
-#define KVM_MMU_READ_UNLOCK(kvm) read_unlock(&(kvm)->mmu_lock)
#else
#define KVM_MMU_LOCK_INIT(kvm) spin_lock_init(&(kvm)->mmu_lock)
#define KVM_MMU_LOCK(kvm) spin_lock(&(kvm)->mmu_lock)
#define KVM_MMU_UNLOCK(kvm) spin_unlock(&(kvm)->mmu_lock)
-#define KVM_MMU_READ_LOCK(kvm) spin_lock(&(kvm)->mmu_lock)
-#define KVM_MMU_READ_UNLOCK(kvm) spin_unlock(&(kvm)->mmu_lock)
#endif /* KVM_HAVE_MMU_RWLOCK */
kvm_pfn_t hva_to_pfn(unsigned long addr, bool atomic, bool interruptible,