[PATCH V2 6/10] KVM/MMU: Flush tlb directly in the kvm_mmu_slot_gfn_write_protect()
From: <hidden>
Date: 2019-02-02 01:39:36
Also in:
kvm, kvmarm, linux-arm-kernel, linux-mips, lkml
Subsystem:
kernel virtual machine for x86 (kvm/x86), the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
Sean Christopherson, Paolo Bonzini, Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
From: Lan Tianyu <redacted> This patch is to flush tlb directly in the kvm_mmu_slot_gfn_write_protect() when range flush is available. Signed-off-by: Lan Tianyu <redacted> --- arch/x86/kvm/mmu.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index d57574b49823..6b5e9bed6665 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c@@ -1718,6 +1718,11 @@ bool kvm_mmu_slot_gfn_write_protect(struct kvm *kvm, write_protected |= __rmap_write_protect(kvm, rmap_head, true); } + if (write_protected && kvm_available_flush_tlb_with_range()) { + kvm_flush_remote_tlbs_with_address(kvm, gfn, 1); + write_protected = false; + } + return write_protected; }
--
2.14.4