From patchwork Sat Feb 2 01:38:24 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tianyu Lan X-Patchwork-Id: 10793991 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C4D27159A for ; Sat, 2 Feb 2019 01:39:56 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B74AD32B54 for ; Sat, 2 Feb 2019 01:39:56 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id AB78B32B89; Sat, 2 Feb 2019 01:39:56 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4C70532B54 for ; Sat, 2 Feb 2019 01:39:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727919AbfBBBjt (ORCPT ); Fri, 1 Feb 2019 20:39:49 -0500 Received: from mail-pg1-f196.google.com ([209.85.215.196]:45298 "EHLO mail-pg1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726598AbfBBBjt (ORCPT ); Fri, 1 Feb 2019 20:39:49 -0500 Received: by mail-pg1-f196.google.com with SMTP id y4so3740103pgc.12; Fri, 01 Feb 2019 17:39:48 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=J0G5pUHhnRBECCI0xPIkQW74M8CRHN4x4Ep3m3tfVSg=; b=mETogsVpxhVfhsOmA0sb7uEV04lG52SniOT1AfmMw+0E+0y28BA+Nm2A13q1U/AIBf Rr21t1bTIOof/r1LaemaW+I+UzY6O/fgq9Iarhivf5oKCqcoaucWRahA0uGqb5l9h9FX gSrimShMJDyZd3Bx4H+UrqD4Ul2hZs53V++PPb+imTnEhAKo/FNhdQkxCDf8vO2nlswN CQMUIDmcqqsWZS+v7Jig+7d3Jhaq6JSuG5d5OEeyYSNC3G3eXaMQ4D8qslLyAB4+aV6V zvdT2zXWWPwfEY4BQMcJHh9qanl0OJiySvAfhPD21IlmfxwFy2DVfQKuWHZ8PzCF4/S6 +LZA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=J0G5pUHhnRBECCI0xPIkQW74M8CRHN4x4Ep3m3tfVSg=; b=YVheg6Lxq+1wrMV2/MZ+c0iFLB9pv4WYTenXskEpZNlNDwkjQuk5je8nkDH+RcSwcm iX2PW/QZHXenUkHojqRDj7HV3r1G+STz8bsucBrtJl1WOmt4nCZkWHbiyB9/cDkXRJhe eluFadd9RZZXTuLLJQiQb6wFg+FpjzDBOjRqQrowGqhTsEw+Ho77Xka7szd2DVT5vn3a J/h1Pp4kXnpjr69jgCyFzjE7LIrOSX2uW2F442WYw5wgQrSdh55elXpA35KFUTYRQrw1 cO7WV1JcsnagpE6kweBriyhvQnsLHyOd8Xk3bBwX1SYTPOEW96o/tdSz4zyXZ/m2wZG7 SKkg== X-Gm-Message-State: AHQUAuYSVA3q0cMywZ4xkJCds4oH1I1KUD90WUc6j1rSvymW0OyxdcTu U6wF0CIwjy4xQylHbYn/xBk= X-Google-Smtp-Source: AHgI3Iavh6/FqGMJR291IjbA0/Gk6zaWfaqjhYnIWMWgId13SG1KABXFEz08oX/WVS+zNawI0z8Azg== X-Received: by 2002:a62:e012:: with SMTP id f18mr9115403pfh.119.1549071588175; Fri, 01 Feb 2019 17:39:48 -0800 (PST) Received: from localhost.corp.microsoft.com ([167.220.255.67]) by smtp.googlemail.com with ESMTPSA id d3sm9183425pgl.64.2019.02.01.17.39.40 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 01 Feb 2019 17:39:47 -0800 (PST) From: lantianyu1986@gmail.com X-Google-Original-From: Tianyu.Lan@microsoft.com Cc: Lan Tianyu , christoffer.dall@arm.com, marc.zyngier@arm.com, linux@armlinux.org.uk, catalin.marinas@arm.com, will.deacon@arm.com, jhogan@kernel.org, ralf@linux-mips.org, paul.burton@mips.com, paulus@ozlabs.org, benh@kernel.crashing.org, mpe@ellerman.id.au, pbonzini@redhat.com, rkrcmar@redhat.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, x86@kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org, kvm-ppc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org, michael.h.kelley@microsoft.com, kys@microsoft.com, vkuznets@redhat.com Subject: [PATCH V2 8/10] KVM: Use tlb range flush in the kvm_vm_ioctl_get/clear_dirty_log() Date: Sat, 2 Feb 2019 09:38:24 +0800 Message-Id: <20190202013825.51261-9-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> To: unlisted-recipients:; (no To-header on input) Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Lan Tianyu This patch is to use tlb range flush to flush memslot's in the kvm_vm_ioctl_get/clear_dirty_log() instead of flushing tlbs of entire ept page table when range flush is available. Signed-off-by: Lan Tianyu --- arch/x86/kvm/mmu.c | 8 +------- arch/x86/kvm/mmu.h | 7 +++++++ arch/x86/kvm/x86.c | 16 ++++++++++++---- 3 files changed, 20 insertions(+), 11 deletions(-) diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index 6b5e9bed6665..63b3e36530e3 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -264,12 +264,6 @@ static void mmu_spte_set(u64 *sptep, u64 spte); static union kvm_mmu_page_role kvm_mmu_calc_root_page_role(struct kvm_vcpu *vcpu); - -static inline bool kvm_available_flush_tlb_with_range(void) -{ - return kvm_x86_ops->tlb_remote_flush_with_range; -} - static void kvm_flush_remote_tlbs_with_range(struct kvm *kvm, struct kvm_tlb_range *range) { @@ -282,7 +276,7 @@ static void kvm_flush_remote_tlbs_with_range(struct kvm *kvm, kvm_flush_remote_tlbs(kvm); } -static void kvm_flush_remote_tlbs_with_address(struct kvm *kvm, +void kvm_flush_remote_tlbs_with_address(struct kvm *kvm, u64 start_gfn, u64 pages) { struct kvm_tlb_range range; diff --git a/arch/x86/kvm/mmu.h b/arch/x86/kvm/mmu.h index c7b333147c4a..dddab78d8ed8 100644 --- a/arch/x86/kvm/mmu.h +++ b/arch/x86/kvm/mmu.h @@ -63,6 +63,13 @@ void kvm_init_shadow_ept_mmu(struct kvm_vcpu *vcpu, bool execonly, bool kvm_can_do_async_pf(struct kvm_vcpu *vcpu); int kvm_handle_page_fault(struct kvm_vcpu *vcpu, u64 error_code, u64 fault_address, char *insn, int insn_len); +void kvm_flush_remote_tlbs_with_address(struct kvm *kvm, + u64 start_gfn, u64 pages); + +static inline bool kvm_available_flush_tlb_with_range(void) +{ + return kvm_x86_ops->tlb_remote_flush_with_range; +} static inline unsigned int kvm_mmu_available_pages(struct kvm *kvm) { diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 3d32b8f5728d..0f70e07abfa1 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -4445,9 +4445,13 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log) * kvm_mmu_slot_remove_write_access(). */ lockdep_assert_held(&kvm->slots_lock); - if (flush) - kvm_flush_remote_tlbs(kvm); + if (flush) { + struct kvm_memory_slot *memslot = kvm_get_memslot(kvm, + log->slot); + kvm_flush_remote_tlbs_with_address(kvm, memslot->base_gfn, + memslot->npages); + } mutex_unlock(&kvm->slots_lock); return r; } @@ -4472,9 +4476,13 @@ int kvm_vm_ioctl_clear_dirty_log(struct kvm *kvm, struct kvm_clear_dirty_log *lo * kvm_mmu_slot_remove_write_access(). */ lockdep_assert_held(&kvm->slots_lock); - if (flush) - kvm_flush_remote_tlbs(kvm); + if (flush) { + struct kvm_memory_slot *memslot = kvm_get_memslot(kvm, + log->slot); + kvm_flush_remote_tlbs_with_address(kvm, memslot->base_gfn, + memslot->npages); + } mutex_unlock(&kvm->slots_lock); return r; }