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From: Tianyu Lan <Tianyu.Lan@microsoft.com>
To: unlisted-recipients:; (no To-header on input)
Cc: Tianyu Lan <Tianyu.Lan@microsoft.com>,
	KY Srinivasan <kys@microsoft.com>,
	Haiyang Zhang <haiyangz@microsoft.com>,
	Stephen Hemminger <sthemmin@microsoft.com>,
	"tglx@linutronix.de" <tglx@linutronix.de>,
	"mingo@redhat.com" <mingo@redhat.com>,
	"hpa@zytor.com" <hpa@zytor.com>,
	"x86@kernel.org" <x86@kernel.org>,
	"pbonzini@redhat.com" <pbonzini@redhat.com>,
	"rkrcmar@redhat.com" <rkrcmar@redhat.com>,
	"devel@linuxdriverproject.org" <devel@linuxdriverproject.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
	"Michael Kelley (EOSG)" <Michael.H.Kelley@microsoft.com>,
	vkuznets <vkuznets@redhat.com>,
	Jork Loeser <Jork.Loeser@microsoft.com>
Subject: [PATCH V2 4/13] KVM/MMU: Flush tlb directly in the kvm_handle_hva_range()
Date: Tue, 18 Sep 2018 03:18:36 +0000	[thread overview]
Message-ID: <20180918031754.113013-5-Tianyu.Lan@microsoft.com> (raw)
In-Reply-To: <20180918031754.113013-1-Tianyu.Lan@microsoft.com>

This patch is to flush tlb directly in the kvm_handle_hva_range()
when range flush is available.

Signed-off-by: Lan Tianyu <Tianyu.Lan@microsoft.com>
---
 arch/x86/kvm/mmu.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 822e170881a4..dfd2a0710417 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -1888,6 +1888,13 @@ static int kvm_handle_hva_range(struct kvm *kvm,
 						 &iterator)
 				ret |= handler(kvm, iterator.rmap, memslot,
 					       iterator.gfn, iterator.level, data);
+
+			if (ret && kvm_available_flush_tlb_with_range()) {
+				kvm_flush_remote_tlbs_with_address(kvm,
+						gfn_start,
+						gfn_end - gfn_start);
+				ret = 0;
+			}
 		}
 	}
 
-- 
2.14.4

  parent reply	other threads:[~2018-09-18  3:18 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-18  3:18 [PATCH V2 00/13] x86/KVM/Hyper-v: Add HV ept tlb range flush hypercall support in KVM Tianyu Lan
2018-09-18  3:18 ` [PATCH V2 1/13] KVM: Add tlb_remote_flush_with_range callback in kvm_x86_ops Tianyu Lan
2018-09-18  3:18 ` [PATCH V2 2/13] KVM/MMU: Add tlb flush with range helper function Tianyu Lan
2018-09-19 16:07   ` Michael Kelley (EOSG)
2018-09-18  3:18 ` [PATCH V2 3/13] KVM: Replace old tlb flush function with new one to flush a specified range Tianyu Lan
2018-09-18  3:18 ` Tianyu Lan [this message]
2018-09-19 16:08   ` [PATCH V2 4/13] KVM/MMU: Flush tlb directly in the kvm_handle_hva_range() Michael Kelley (EOSG)
2018-09-20 14:30     ` Tianyu Lan
2018-09-20 19:05       ` Michael Kelley (EOSG)
2018-09-18  3:18 ` [PATCH V2 5/13] KVM/MMU: Flush tlb directly in the kvm_zap_gfn_range() Tianyu Lan
2018-09-18  3:18 ` [PATCH V2 6/13] KVM/MMU: Flush tlb directly in kvm_mmu_zap_collapsible_spte() Tianyu Lan
2018-09-18  3:18 ` [PATCH V2 7/13] KVM: Add flush_link and parent_pte in the struct kvm_mmu_page Tianyu Lan
2018-09-18  3:19 ` [PATCH V2 8/13] KVM: Add spte's point " Tianyu Lan
2018-09-18  3:19 ` [PATCH V2 9/13] KVM/MMU: Replace tlb flush function with range list flush function Tianyu Lan
2018-09-18  3:19 ` [PATCH V2 10/13] x86/hyper-v: Add HvFlushGuestAddressList hypercall support Tianyu Lan
2018-09-19 17:00   ` Michael Kelley (EOSG)
2018-09-18  3:19 ` [PATCH V2 11/13] x86/Hyper-v: Add trace in the hyperv_nested_flush_guest_mapping_range() Tianyu Lan
2018-09-18  3:19 ` [PATCH V2 12/13] KVM/VMX: Change hv flush logic when ept tables are mismatched Tianyu Lan
2018-09-18  3:19 ` [PATCH V2 13/13] KVM/VMX: Add hv tlb range flush support Tianyu Lan

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