From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BC4ACC43143 for ; Mon, 1 Oct 2018 15:54:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8CC2120C0A for ; Mon, 1 Oct 2018 15:54:53 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8CC2120C0A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726349AbeJAWdS (ORCPT ); Mon, 1 Oct 2018 18:33:18 -0400 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70]:51776 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726149AbeJAWdS (ORCPT ); Mon, 1 Oct 2018 18:33:18 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 3AF2B18A; Mon, 1 Oct 2018 08:54:51 -0700 (PDT) Received: from localhost (e105922-lin.emea.arm.com [10.4.13.28]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id AA6883F5D3; Mon, 1 Oct 2018 08:54:50 -0700 (PDT) From: Punit Agrawal To: kvmarm@lists.cs.columbia.edu Cc: Punit Agrawal , marc.zyngier@arm.com, will.deacon@arm.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, suzuki.poulose@arm.com Subject: [PATCH v8 0/9] KVM: Support PUD hugepage at stage 2 Date: Mon, 1 Oct 2018 16:54:34 +0100 Message-Id: <20181001155443.23032-1-punit.agrawal@arm.com> X-Mailer: git-send-email 2.18.0 X-ARM-No-Footer: FoSSMail Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This series is an update to the PUD hugepage support previously posted at [0]. This patchset adds support for PUD hugepages at stage 2 a feature that is useful on cores that have support for large sized TLB mappings (e.g., 1GB for 4K granule). The only change in this version is to update the kvm_stage2_has_pud() helper for arm to use CONFIG_PGTABLE_LEVELS. The patches are based on v6 of the dynamic IPA support. The patches have been tested on AMD Seattle system with the following hugepage sizes - 64K, 32M, 1G. Thanks, Punit v7 -> v8 * Add kvm_stage2_has_pud() helper on arm32 * Rebased to v6 of 52bit dynamic IPA support v6 -> v7 * Restrict thp check to exclude hugetlbfs pages - Patch 1 * Don't update PUD entry if there's no change - Patch 9 * Add check for PUD level in stage 2 - Patch 9 v5 -> v6 * Split Patch 1 to move out the refactoring of exec permissions on page table entries. * Patch 4 - Initialise p*dpp pointers in stage2_get_leaf_entry() * Patch 5 - Trigger a BUG() in kvm_pud_pfn() on arm v4 -> v5: * Patch 1 - Drop helper stage2_should_exec() and refactor the condition to decide if a page table entry should be marked executable * Patch 4-6 - Introduce stage2_get_leaf_entry() and use it in this and latter patches * Patch 7 - Use stage 2 accessors instead of using the page table helpers directly * Patch 7 - Add a note to update the PUD hugepage support when number of levels of stage 2 tables differs from stage 1 v3 -> v4: * Patch 1 and 7 - Don't put down hugepages pte if logging is enabled * Patch 4-5 - Add PUD hugepage support for exec and access faults * Patch 6 - PUD hugepage support for aging page table entries v2 -> v3: * Update vma_pagesize directly if THP [1/4]. Previsouly this was done indirectly via hugetlb * Added review tag [4/4] v1 -> v2: * Create helper to check if the page should have exec permission [1/4] * Fix broken condition to detect THP hugepage [1/4] * Fix in-correct hunk resulting from a rebase [4/4] [0] https://www.spinics.net/lists/kvm-arm/msg32753.html [1] https://lkml.org/lkml/2018/9/26/936 Punit Agrawal (9): KVM: arm/arm64: Ensure only THP is candidate for adjustment KVM: arm/arm64: Share common code in user_mem_abort() KVM: arm/arm64: Re-factor setting the Stage 2 entry to exec on fault KVM: arm/arm64: Introduce helpers to manipulate page table entries KVM: arm64: Support dirty page tracking for PUD hugepages KVM: arm64: Support PUD hugepage in stage2_is_exec() KVM: arm64: Support handling access faults for PUD hugepages KVM: arm64: Update age handlers to support PUD hugepages KVM: arm64: Add support for creating PUD hugepages at stage 2 arch/arm/include/asm/kvm_mmu.h | 61 +++++ arch/arm/include/asm/stage2_pgtable.h | 9 + arch/arm64/include/asm/kvm_mmu.h | 48 ++++ arch/arm64/include/asm/pgtable-hwdef.h | 4 + arch/arm64/include/asm/pgtable.h | 9 + virt/kvm/arm/mmu.c | 320 +++++++++++++++++++------ 6 files changed, 373 insertions(+), 78 deletions(-) -- 2.18.0