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Fri, 01 Feb 2019 17:39:17 -0800 (PST) Received: from localhost.corp.microsoft.com ([167.220.255.67]) by smtp.googlemail.com with ESMTPSA id d3sm9183425pgl.64.2019.02.01.17.39.10 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 01 Feb 2019 17:39:16 -0800 (PST) From: lantianyu1986@gmail.com X-Google-Original-From: Tianyu.Lan@microsoft.com To: Subject: [PATCH V2 4/10] KVM/MMU: Introduce tlb flush with range list Date: Sat, 2 Feb 2019 09:38:20 +0800 Message-Id: <20190202013825.51261-5-Tianyu.Lan@microsoft.com> X-Mailer: git-send-email 2.14.4 In-Reply-To: <20190202013825.51261-1-Tianyu.Lan@microsoft.com> References: <20190202013825.51261-1-Tianyu.Lan@microsoft.com> X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kvm@vger.kernel.org, rkrcmar@redhat.com, catalin.marinas@arm.com, will.deacon@arm.com, christoffer.dall@arm.com, hpa@zytor.com, kys@microsoft.com, kvmarm@lists.cs.columbia.edu, x86@kernel.org, linux@armlinux.org.uk, michael.h.kelley@microsoft.com, mingo@redhat.com, jhogan@kernel.org, linux-mips@vger.kernel.org, Lan Tianyu , marc.zyngier@arm.com, kvm-ppc@vger.kernel.org, bp@alien8.de, tglx@linutronix.de, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, ralf@linux-mips.org, paul.burton@mips.com, pbonzini@redhat.com, vkuznets@redhat.com, linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" From: Lan Tianyu This patch is to introduce tlb flush with range list interface and use struct kvm_mmu_page as list entry. Use flush list function in the kvm_mmu_commit_zap_page(). Signed-off-by: Lan Tianyu --- arch/x86/kvm/mmu.c | 25 ++++++++++++++++++++++++- 1 file changed, 24 insertions(+), 1 deletion(-) diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index 70cafd3f95ab..d57574b49823 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -289,6 +289,20 @@ static void kvm_flush_remote_tlbs_with_address(struct kvm *kvm, range.start_gfn = start_gfn; range.pages = pages; + range.flush_list = NULL; + + kvm_flush_remote_tlbs_with_range(kvm, &range); +} + +static void kvm_flush_remote_tlbs_with_list(struct kvm *kvm, + struct hlist_head *flush_list) +{ + struct kvm_tlb_range range; + + if (hlist_empty(flush_list)) + return; + + range.flush_list = flush_list; kvm_flush_remote_tlbs_with_range(kvm, &range); } @@ -2708,6 +2722,7 @@ static void kvm_mmu_commit_zap_page(struct kvm *kvm, struct list_head *invalid_list) { struct kvm_mmu_page *sp, *nsp; + HLIST_HEAD(flush_list); if (list_empty(invalid_list)) return; @@ -2721,7 +2736,15 @@ static void kvm_mmu_commit_zap_page(struct kvm *kvm, * In addition, kvm_flush_remote_tlbs waits for all vcpus to exit * guest mode and/or lockless shadow page table walks. */ - kvm_flush_remote_tlbs(kvm); + if (kvm_available_flush_tlb_with_range()) { + list_for_each_entry(sp, invalid_list, link) + if (sp->last_level) + hlist_add_head(&sp->flush_link, &flush_list); + + kvm_flush_remote_tlbs_with_list(kvm, &flush_list); + } else { + kvm_flush_remote_tlbs(kvm); + } list_for_each_entry_safe(sp, nsp, invalid_list, link) { WARN_ON(!sp->role.invalid || sp->root_count); -- 2.14.4