From patchwork Sat Oct 13 14:53:51 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tianyu Lan X-Patchwork-Id: 10640169 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 653EC17E3 for ; Sat, 13 Oct 2018 14:54:40 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3478229F22 for ; Sat, 13 Oct 2018 14:54:40 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 232732AD9D; Sat, 13 Oct 2018 14:54:40 +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=ham 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 9665F29D32 for ; Sat, 13 Oct 2018 14:54:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726329AbeJMWbt (ORCPT ); Sat, 13 Oct 2018 18:31:49 -0400 Received: from mail-pf1-f194.google.com ([209.85.210.194]:46472 "EHLO mail-pf1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726309AbeJMWbs (ORCPT ); Sat, 13 Oct 2018 18:31:48 -0400 Received: by mail-pf1-f194.google.com with SMTP id r64-v6so7584305pfb.13; Sat, 13 Oct 2018 07:54:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=qRIE2f33zVx7l+zax50LPFwdkUfPKlzQ2ecUdzjJB3w=; b=iptJbN9c7EXhdMtLuNVDWpdEX79VyhZ/htZ+sDq/0gR2dP1AIYzptr3iNcS4dIhKuE gKw0scn4icIEQk2lUAZ2WgG/ONCcoYfNbDD4oYWQfMASgZKFuZjGjOA4PRN7GaECv8ck n/2kTGtpkX8cnOiPay1nwjGWywFo4yOAGytbQfkZwU2tg0ewFBKfSh4JEH7fgTcNBwrc eGHD3EwzUxJ3gViIkr7q00cmyxGixm8OBwWOPUEZH6uvOyR8FlWKtsQNRJ2u6hGGQBlu a80KlkxdLjlR2NpXkH6zCVl+LXrXD6GK0Y+vwxzGldrKVK2BpTpUNoGAtxqIFg4xo6bA OOaQ== 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; bh=qRIE2f33zVx7l+zax50LPFwdkUfPKlzQ2ecUdzjJB3w=; b=RZUN0Pk4ju433QiT0/AFnA8k5J6tIrUlDXovaP+Cl7wsMH0rJxCdDZYymNh4ESlY2V p5yKGBxbtEyfytxYj0JScPbM3NOGUIXfXCvgKKQYIX0GZ8Gm/bpmZMEwESe8u4Zur+Lm jkyy9LlVvc3P0ul+wXyg6tJob+bxozEXVXOtQgR/vmeLr7Wq8R9tpX76a/Cj396GQLo6 OOpbk80D8rtDcqg/rN0mnTwgUF2yquD8MTZd/aNcwZRP0q39shiRiCzC1jqzRA9f9nnM pZCYirSAyXjmpzonMRfopUoMizxWTgRTAfdMt0kiNWpYswt0PqlPynXVhtBbhTW8FIZZ s4YA== X-Gm-Message-State: ABuFfoh55QwplgTbIhC6Zyk/FMf7qVcUqthjusnch4Qcp/RJD9iDwrWV VSeFABxnGQg3xXaGh6D1D2Q= X-Google-Smtp-Source: ACcGV61HMe2w0niUJncct3r9sXFquEOhFIAsw/cgsgxD0CgIn25ejhdalgbJmm99gXA+gxqlvxuKnQ== X-Received: by 2002:a63:5605:: with SMTP id k5-v6mr9644403pgb.189.1539442462441; Sat, 13 Oct 2018 07:54:22 -0700 (PDT) Received: from localhost.corp.microsoft.com ([2404:f801:9000:18:d9bf:62c6:740b:9fc4]) by smtp.googlemail.com with ESMTPSA id v81-v6sm8688724pfj.25.2018.10.13.07.54.14 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Sat, 13 Oct 2018 07:54:21 -0700 (PDT) From: lantianyu1986@gmail.com X-Google-Original-From: Tianyu.Lan@microsoft.com Cc: Lan Tianyu , benh@kernel.crashing.org, catalin.marinas@arm.com, christoffer.dall@arm.com, devel@linuxdriverproject.org, haiyangz@microsoft.com, hpa@zytor.com, jhogan@kernel.org, kvmarm@lists.cs.columbia.edu, kvm-ppc@vger.kernel.org, kvm@vger.kernel.org, kys@microsoft.com, linux-arm-kernel@lists.infradead.org, linux@armlinux.org, linux-kernel@vger.kernel.org, linux-mips@linux-mips.org, linuxppc-dev@lists.ozlabs.org, marc.zyngier@arm.com, mingo@redhat.com, mpe@ellerman.id.au, paul.burton@mips.com, paulus@ozlabs.org, pbonzini@redhat.com, ralf@linux-mips.org, rkrcmar@redhat.com, sthemmin@microsoft.com, tglx@linutronix.de, will.deacon@arm.com, x86@kernel.org, michael.h.kelley@microsoft.com, vkuznets@redhat.com Subject: [PATCH V4 00/15] x86/KVM/Hyper-v: Add HV ept tlb range flush hypercall support in KVM Date: Sat, 13 Oct 2018 22:53:51 +0800 Message-Id: <20181013145406.4911-1-Tianyu.Lan@microsoft.com> X-Mailer: git-send-email 2.14.4 To: unlisted-recipients:; (no To-header on input) Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Lan Tianyu For nested memory virtualization, Hyper-v doesn't set write-protect L1 hypervisor EPT page directory and page table node to track changes while it relies on guest to tell it changes via HvFlushGuestAddressLlist hypercall. HvFlushGuestAddressLlist hypercall provides a way to flush EPT page table with ranges which are specified by L1 hypervisor. If L1 hypervisor uses INVEPT or HvFlushGuestAddressSpace hypercall to flush EPT tlb, Hyper-V will invalidate associated EPT shadow page table and sync L1's EPT table when next EPT page fault is triggered. HvFlushGuestAddressLlist hypercall helps to avoid such redundant EPT page fault and synchronization of shadow page table. Change since v3: 1) Remove code of updating "tlbs_dirty" in kvm_flush_remote_tlbs_with_range() 2) Remove directly tlb flush in the kvm_handle_hva_range() 3) Move tlb flush in kvm_set_pte_rmapp() to kvm_mmu_notifier_change_pte() 4) Combine Vitaly's "don't pass EPT configuration info to vmx_hv_remote_flush_tlb()" fix Change since v2: 1) Fix comment in the kvm_flush_remote_tlbs_with_range() 2) Move HV_MAX_FLUSH_PAGES and HV_MAX_FLUSH_REP_COUNT to hyperv-tlfs.h. 3) Calculate HV_MAX_FLUSH_REP_COUNT in the macro definition 4) Use HV_MAX_FLUSH_REP_COUNT to define length of gpa_list in struct hv_guest_mapping_flush_list. Change since v1: 1) Convert "end_gfn" of struct kvm_tlb_range to "pages" in order to avoid confusion as to whether "end_gfn" is inclusive or exlusive. 2) Add hyperv tlb range struct and replace kvm tlb range struct with new struct in order to avoid using kvm struct in the hyperv code directly. Lan Tianyu (15): KVM: Add tlb_remote_flush_with_range callback in kvm_x86_ops KVM/MMU: Add tlb flush with range helper function KVM: Replace old tlb flush function with new one to flush a specified range. KVM: Make kvm_set_spte_hva() return int KVM/MMU: Move tlb flush in kvm_set_pte_rmapp() to kvm_mmu_notifier_change_pte() KVM/MMU: Flush tlb directly in the kvm_set_pte_rmapp() KVM/MMU: Flush tlb directly in the kvm_zap_gfn_range() KVM/MMU: Flush tlb directly in kvm_mmu_zap_collapsible_spte() KVM: Add flush_link and parent_pte in the struct kvm_mmu_page KVM: Add spte's point in the struct kvm_mmu_page KVM/MMU: Replace tlb flush function with range list flush function x86/hyper-v: Add HvFlushGuestAddressList hypercall support x86/Hyper-v: Add trace in the hyperv_nested_flush_guest_mapping_range() KVM/VMX: Change hv flush logic when ept tables are mismatched. KVM/VMX: Add hv tlb range flush support arch/arm/include/asm/kvm_host.h | 2 +- arch/arm64/include/asm/kvm_host.h | 2 +- arch/mips/include/asm/kvm_host.h | 2 +- arch/mips/kvm/mmu.c | 3 +- arch/powerpc/include/asm/kvm_host.h | 2 +- arch/powerpc/kvm/book3s.c | 3 +- arch/powerpc/kvm/e500_mmu_host.c | 3 +- arch/x86/hyperv/nested.c | 85 ++++++++++++++++++++++ arch/x86/include/asm/hyperv-tlfs.h | 32 +++++++++ arch/x86/include/asm/kvm_host.h | 12 +++- arch/x86/include/asm/mshyperv.h | 16 +++++ arch/x86/include/asm/trace/hyperv.h | 14 ++++ arch/x86/kvm/mmu.c | 138 ++++++++++++++++++++++++++++++------ arch/x86/kvm/paging_tmpl.h | 10 ++- arch/x86/kvm/vmx.c | 70 +++++++++++++++--- virt/kvm/arm/mmu.c | 6 +- virt/kvm/kvm_main.c | 5 +- 17 files changed, 360 insertions(+), 45 deletions(-)