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KVM: Remove tlbs_dirty 

There is no user of tlbs_dirty.

Signed-off-by: Lai Jiangshan <laijs@linux.alibaba.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210918005636.3675-4-jiangshanlai@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Lai Jiangshan 2021-09-18 08:56:29 +08:00 committed by Paolo Bonzini
parent 65855ed8b0
commit 6bc6db0002
2 changed files with 2 additions and 9 deletions
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1
include/linux/kvm_host.h
View File

@ -608,7 +608,6 @@ struct kvm {
unsigned long mmu_notifier_range_start;
unsigned long mmu_notifier_range_end;
#endif
long tlbs_dirty;
struct list_head devices;
u64 manual_dirty_log_protect;
struct dentry *debugfs_dentry;

10
virt/kvm/kvm_main.c
View File

@ -326,13 +326,8 @@ EXPORT_SYMBOL_GPL(kvm_make_all_cpus_request);
#ifndef CONFIG_HAVE_KVM_ARCH_TLB_FLUSH_ALL
void kvm_flush_remote_tlbs(struct kvm *kvm)
{
/*
* Read tlbs_dirty before setting KVM_REQ_TLB_FLUSH in
* kvm_make_all_cpus_request.
*/
long dirty_count = smp_load_acquire(&kvm->tlbs_dirty);
++kvm->stat.generic.remote_tlb_flush_requests;
/*
* We want to publish modifications to the page tables before reading
* mode. Pairs with a memory barrier in arch-specific code.
@ -347,7 +342,6 @@ void kvm_flush_remote_tlbs(struct kvm *kvm)
if (!kvm_arch_flush_remote_tlb(kvm)
|| kvm_make_all_cpus_request(kvm, KVM_REQ_TLB_FLUSH))
++kvm->stat.generic.remote_tlb_flush;
cmpxchg(&kvm->tlbs_dirty, dirty_count, 0);
}
EXPORT_SYMBOL_GPL(kvm_flush_remote_tlbs);
#endif
@ -552,7 +546,7 @@ static __always_inline int __kvm_handle_hva_range(struct kvm *kvm,
}
}
if (range->flush_on_ret && (ret || kvm->tlbs_dirty))
if (range->flush_on_ret && ret)
kvm_flush_remote_tlbs(kvm);
if (locked)