From patchwork Thu Jan 26 18:40:18 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Matlack X-Patchwork-Id: 13117683 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 981BFC05027 for ; Thu, 26 Jan 2023 19:47:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Cc:To:From:Subject:Message-ID: Mime-Version:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To: References:List-Owner; bh=9pWcj8X0ue89hd5LOHa3BkmJHktVPmDI4VCGopLoD90=; b=4Oy VYSu/zO4/60af6fKCvzQNfF16FqI/xpQ39RlLidF+VTUxNXRGRH/0XarMioJ1iJakXeoMhaeylDCG B3qaX4k7VRrZLuJXTaXEqBn93fm4KATKX5/9Zzk1dc4tygO9ebZqcjwiUEEUyaBafWjDeKyC1RGzI /0IyHfefpWGF+J22AQPZbzuaXGEIHgle9lJtb31u9Txwn7dUdaaer0MeTPadZCPs+xGLsPf72BBp5 vhZXsGutzl3HN7C8ni+s3xN7jaUriYmry5mwtAT1FlahSjkq7QPglZuTfWgqB0g0d+QoidOrMi3J6 B/XHnF3IP7AWojlmEYL11ihrmc2nbKQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pL8D9-00CN8d-Ls; Thu, 26 Jan 2023 19:47:03 +0000 Received: from mail-yw1-x1149.google.com ([2607:f8b0:4864:20::1149]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pL7B0-00CAVr-T8 for linux-riscv@lists.infradead.org; Thu, 26 Jan 2023 18:40:51 +0000 Received: by mail-yw1-x1149.google.com with SMTP id 00721157ae682-5065604854eso29634267b3.16 for ; Thu, 26 Jan 2023 10:40:40 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=Ie07OawPNI+tJK8/hFSWiI7XFoX01SxG+4YwTEZViLQ=; b=D1zilxz/MrFwcNOLMT1LAITkqOyJHoIg1OvmdTgNrSXt2+8bKehEyhZdJ83wWYuURL Y0TlzIojPMrAY/CU2EgKBxKy8Nx8rmheh1GkuQRsxJHJN2NAKEqwzghdwiLNFihCDWAp xAqgswB2O5bVSkkHVOV/HJM6lOVfZSqt9ReqdJP9r1WG6enSrRiCbP2umw7Iz+8nswUx YO7YdtyP+HTlvOTCLKBJfy3cdltcIpQzviK1n84DUaBgb2qM5tqpM8I9zoSX/91t7Yqw jiFcfGub83bVeaJzvdpdizULguQj8McM0NB0eAlP96DiLVznXsRzwRYQJ3xMSNQhmSRM +wUA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=Ie07OawPNI+tJK8/hFSWiI7XFoX01SxG+4YwTEZViLQ=; b=t8AzYMAr70I1KNBJ93ZWi+rQqt2q6s/ZPM6Ex9iFGppqN2aY7EPu5Em8RW3lXw9ufV jgSXBKCizClJFMEUh8rIngvCiPmhPstuSmr0C2OY4gZqT9nDVjsJjr/5WSOwQngue4YA S4uX7a9VhjCrhb4ZVjZtaIBVXteIzCBM0u7YlKo/Ywv2JpvcGkuPnDyhxacIcsDNFqXV e25QJuiMwj8gfW0kM+BAuyB4/FvRUnQEfyN8p4vC8p2kazOhkge4cmcJLzl2SINRYUuI nogB8GTrDbhh+5jpRnnjJRO+qwPb2ejkencnc+CQ95cBQVsbAw4TKzZ9h+W9hyDYuoD7 y4dg== X-Gm-Message-State: AFqh2krzMW+dEBEhJV4743rIdY5Ic8qL1q11SL868PKBFEyEAoxX73f2 BaCp36CSnXJLUP5fX6EOr0dafJQh5icuXw== X-Google-Smtp-Source: AMrXdXvYhsT+DA2KA1c/9P+wVBnv1OdnS37rNGakXvNF40eWFc5OqICy7ZZvOWGpLhibmaIEJb5soSQRpzz3bA== X-Received: from dmatlack-n2d-128.c.googlers.com ([fda3:e722:ac3:cc00:20:ed76:c0a8:1309]) (user=dmatlack job=sendgmr) by 2002:a81:4f81:0:b0:502:92ae:5123 with SMTP id d123-20020a814f81000000b0050292ae5123mr2486176ywb.99.1674758440211; Thu, 26 Jan 2023 10:40:40 -0800 (PST) Date: Thu, 26 Jan 2023 10:40:18 -0800 Mime-Version: 1.0 X-Mailer: git-send-email 2.39.1.456.gfc5497dd1b-goog Message-ID: <20230126184025.2294823-1-dmatlack@google.com> Subject: [PATCH v2 0/7] KVM: Add a common API for range-based TLB invalidation From: David Matlack To: Paolo Bonzini Cc: Marc Zyngier , James Morse , Suzuki K Poulose , Oliver Upton , Zenghui Yu , Huacai Chen , Aleksandar Markovic , Anup Patel , Atish Patra , Paul Walmsley , Palmer Dabbelt , Albert Ou , Sean Christopherson , linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvmarm@lists.cs.columbia.edu, linux-mips@vger.kernel.org, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, David Matlack , Raghavendra Rao Ananta X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230126_104047_082896_68F69EAF X-CRM114-Status: GOOD ( 11.02 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org This series introduces a common API for performing range-based TLB invalidation. This is then used to supplant kvm_arch_flush_remote_tlbs_memslot() and pave the way for two other patch series: 1. https://lore.kernel.org/kvm/20230109215347.3119271-1-rananta@google.com/ Adds ARM support for range-based TLB invalidation and needs a mechanism to invoke it from common code. This series provides such a mechanism via kvm_arch_flush_remote_tlbs_range(). 2. https://lore.kernel.org/kvm/20221208193857.4090582-1-dmatlack@google.com/ Refactors the TDP MMU into common code, which requires an API for range-based TLB invaliation. This series is based on patches 29-33 from (2.), but I made some further cleanups after looking at it a second time. Tested on x86_64 and ARM64 using KVM selftests. Cc: Raghavendra Rao Ananta v2: - Rebased on top of kvm-x86/next to resolve conflicts in changes slated for 6.3 [Sean] - Drop CONFIG_HAVE_KVM_ARCH_TLB_FLUSH_ALL from virt/kvm/Kconfig [Oliver] v1: https://lore.kernel.org/kvm/20230119173559.2517103-1-dmatlack@google.com/ David Matlack (7): KVM: Rename kvm_arch_flush_remote_tlb() to kvm_arch_flush_remote_tlbs() KVM: arm64: Use kvm_arch_flush_remote_tlbs() KVM: x86/mmu: Collapse kvm_flush_remote_tlbs_with_{range,address}() together KVM: x86/mmu: Rename kvm_flush_remote_tlbs_with_address() KVM: x86/MMU: Use gfn_t in kvm_flush_remote_tlbs_range() KVM: Allow range-based TLB invalidation from common code KVM: Move kvm_arch_flush_remote_tlbs_memslot() to common code arch/arm64/include/asm/kvm_host.h | 3 ++ arch/arm64/kvm/Kconfig | 1 - arch/arm64/kvm/arm.c | 6 ---- arch/arm64/kvm/mmu.c | 6 ++-- arch/mips/include/asm/kvm_host.h | 4 +-- arch/mips/kvm/mips.c | 12 ++------ arch/riscv/kvm/mmu.c | 6 ---- arch/x86/include/asm/kvm_host.h | 7 +++-- arch/x86/kvm/mmu/mmu.c | 46 +++++++------------------------ arch/x86/kvm/mmu/mmu_internal.h | 7 ++--- arch/x86/kvm/x86.c | 2 +- include/linux/kvm_host.h | 20 ++++++++++---- virt/kvm/Kconfig | 3 -- virt/kvm/kvm_main.c | 35 +++++++++++++++++++---- 14 files changed, 73 insertions(+), 85 deletions(-) base-commit: 503f0315c97739d3f8e645c500d81757dfbf76be prerequisite-patch-id: 42a76ce7cec240776c21f674e99e893a3a6bee58 prerequisite-patch-id: c5ef6bbef252706b7e65b76dc9bd92cf320828f5 prerequisite-patch-id: c6e662cb6c369a47a027c25d3ccc7138a19b17f5 prerequisite-patch-id: 15a58bec64bf1537e6c9e2f52179fac652d441f7 prerequisite-patch-id: d5b6fea4724f4f2c3408b95d7ce5acdd4b528b10