Commit 6bc6db00 authored by Lai Jiangshan's avatar Lai Jiangshan Committed by Paolo Bonzini
Browse files

KVM: Remove tlbs_dirty 



There is no user of tlbs_dirty.

Signed-off-by: default avatarLai Jiangshan <laijs@linux.alibaba.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210918005636.3675-4-jiangshanlai@gmail.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 65855ed8

include/linux/kvm_host.h

+0 −1
Original line number Diff line number Diff line
@@ -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;

virt/kvm/kvm_main.c

+2 −8
Original line number Diff line number Diff line
@@ -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)