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Subject[PATCH V3 4/10] KVM/MMU: Use range flush in sync_page()
Date
From: Lan Tianyu <Tianyu.Lan@microsoft.com>

This patch is to use range flush to flush tlbs of input struct
kvm_mmu_page in the sync_page(). If range flush is not available,
kvm_flush_remote_tlbs_with_address() will call kvm_flush_remote_tlbs().

Signed-off-by: Lan Tianyu <Tianyu.Lan@microsoft.com>
---
arch/x86/kvm/paging_tmpl.h | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h
index 6bdca39829bc..768c5c64e3f8 100644
--- a/arch/x86/kvm/paging_tmpl.h
+++ b/arch/x86/kvm/paging_tmpl.h
@@ -1033,8 +1033,9 @@ static int FNAME(sync_page)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp)
true, false, host_writable);
}

- if (set_spte_ret & SET_SPTE_NEED_REMOTE_TLB_FLUSH)
- kvm_flush_remote_tlbs(vcpu->kvm);
+
+ kvm_flush_remote_tlbs_with_address(vcpu->kvm, sp->gfn,
+ KVM_PAGES_PER_HPAGE(sp->role.level + 1));

return nr_present;
}
--
2.14.4
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