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=-26.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT,USER_IN_DEF_DKIM_WL autolearn=unavailable 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 38C20C43332 for ; Fri, 19 Mar 2021 10:03:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F41E464F45 for ; Fri, 19 Mar 2021 10:03:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230454AbhCSKD3 (ORCPT ); Fri, 19 Mar 2021 06:03:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54242 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230166AbhCSKCp (ORCPT ); Fri, 19 Mar 2021 06:02:45 -0400 Received: from mail-wm1-x349.google.com (mail-wm1-x349.google.com [IPv6:2a00:1450:4864:20::349]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9B6DEC06174A for ; Fri, 19 Mar 2021 03:02:44 -0700 (PDT) Received: by mail-wm1-x349.google.com with SMTP id a63so4395567wmd.8 for ; Fri, 19 Mar 2021 03:02:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=GoB0Yt2mReKBbMoIr+lrsMAUtacP9flbLvax4BQ0cpo=; b=mN+FVC37//OEHQaXZ4xc2thLgYxUYcwEXaW5TBfO3XlbhCuyXV8jvTNRJLii5RLIj0 xmKkGauvXEi0qyjP0Kcp8OK66FoyG8uJe7Q6GNxfmPmV/oSHgYoO6GSkxdZm7du+bwhl 8V2Fz7Q7VbHRBBEgX+9Q2JzGBbVYLb+nSh+WoVGi6HtrU1vY3OCpXTt6SzkMpifbf1xs RNOGHY5XdRY09XTS/UcNCjZcWMpii07Z8v375fHeOTd3nS/z/i2DthjHr5hibcvG6s5v pMF0THMZMLV9n48Pn91vMViDEYTJ0ZRN7zRVf3rPR2wVJi3CbJPDNxDmioYHC948CiXF A5KQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=GoB0Yt2mReKBbMoIr+lrsMAUtacP9flbLvax4BQ0cpo=; b=Yz0zTfYLJViW81GG0S7/ISt3laBilrIdDWEv/XH3sJTUBTHpx0uVLgwgF8vdTgXGC4 WWBLamqR36O018/11WJI4YCU1wvtITJRxv/OFd74p1TriDB8wnTU+QPvDxK1PRUTLajJ OYMFlH0TI65Hvv0s95nAxXTE8C8rzCAQkrEQYfGaBvx2tUgdwMm7yKUH1SwZ/YYxwlWb SHtATAOOOgyVQLiIY30jSpco5pYv4JJ/SDM2v0dczwkulfc6ZKKwQRxXjjW0E+QJMOc6 n5i1Ky9JhJ3hfkvqZp4OKUIGh7COh5DusuoCx//f2v/uWuPSsMwPLJ4SmBeyu2hsTVK1 8hQw== X-Gm-Message-State: AOAM530PeuhOkUFOTI6rWL5RKqJh33sSYgcKtRx0uo6vVql6UwsA8kLw jnuLvFsTgnDeLzzfPEi0dx6Q3Ep5H6v8 X-Google-Smtp-Source: ABdhPJwANOYdeS5v07RyJarildN3aDLb2D0RRdsdS4nj5tblGB/ls84kq0dI4zckrcY6q898orz04xgstkQm X-Received: from r2d2-qp.c.googlers.com ([fda3:e722:ac3:10:28:9cb1:c0a8:1652]) (user=qperret job=sendgmr) by 2002:a7b:c18e:: with SMTP id y14mr1312452wmi.1.1616148162823; Fri, 19 Mar 2021 03:02:42 -0700 (PDT) Date: Fri, 19 Mar 2021 10:01:33 +0000 In-Reply-To: <20210319100146.1149909-1-qperret@google.com> Message-Id: <20210319100146.1149909-26-qperret@google.com> Mime-Version: 1.0 References: <20210319100146.1149909-1-qperret@google.com> X-Mailer: git-send-email 2.31.0.rc2.261.g7f71774620-goog Subject: [PATCH v6 25/38] KVM: arm64: Make memcache anonymous in pgtable allocator From: Quentin Perret To: catalin.marinas@arm.com, will@kernel.org, maz@kernel.org, james.morse@arm.com, julien.thierry.kdev@gmail.com, suzuki.poulose@arm.com Cc: android-kvm@google.com, seanjc@google.com, mate.toth-pal@arm.com, linux-kernel@vger.kernel.org, robh+dt@kernel.org, linux-arm-kernel@lists.infradead.org, kernel-team@android.com, kvmarm@lists.cs.columbia.edu, tabba@google.com, ardb@kernel.org, mark.rutland@arm.com, dbrazdil@google.com, qperret@google.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The current stage2 page-table allocator uses a memcache to get pre-allocated pages when it needs any. To allow re-using this code at EL2 which uses a concept of memory pools, make the memcache argument of kvm_pgtable_stage2_map() anonymous, and let the mm_ops zalloc_page() callbacks use it the way they need to. Acked-by: Will Deacon Signed-off-by: Quentin Perret --- arch/arm64/include/asm/kvm_pgtable.h | 6 +++--- arch/arm64/kvm/hyp/pgtable.c | 4 ++-- 2 files changed, 5 insertions(+), 5 deletions(-) diff --git a/arch/arm64/include/asm/kvm_pgtable.h b/arch/arm64/include/asm/kvm_pgtable.h index 9cdc198ea6b4..4ae19247837b 100644 --- a/arch/arm64/include/asm/kvm_pgtable.h +++ b/arch/arm64/include/asm/kvm_pgtable.h @@ -213,8 +213,8 @@ void kvm_pgtable_stage2_destroy(struct kvm_pgtable *pgt); * @size: Size of the mapping. * @phys: Physical address of the memory to map. * @prot: Permissions and attributes for the mapping. - * @mc: Cache of pre-allocated GFP_PGTABLE_USER memory from which to - * allocate page-table pages. + * @mc: Cache of pre-allocated and zeroed memory from which to allocate + * page-table pages. * * The offset of @addr within a page is ignored, @size is rounded-up to * the next page boundary and @phys is rounded-down to the previous page @@ -236,7 +236,7 @@ void kvm_pgtable_stage2_destroy(struct kvm_pgtable *pgt); */ int kvm_pgtable_stage2_map(struct kvm_pgtable *pgt, u64 addr, u64 size, u64 phys, enum kvm_pgtable_prot prot, - struct kvm_mmu_memory_cache *mc); + void *mc); /** * kvm_pgtable_stage2_unmap() - Remove a mapping from a guest stage-2 page-table. diff --git a/arch/arm64/kvm/hyp/pgtable.c b/arch/arm64/kvm/hyp/pgtable.c index 4e15ccafd640..15de1708cfcd 100644 --- a/arch/arm64/kvm/hyp/pgtable.c +++ b/arch/arm64/kvm/hyp/pgtable.c @@ -446,7 +446,7 @@ struct stage2_map_data { kvm_pte_t *anchor; struct kvm_s2_mmu *mmu; - struct kvm_mmu_memory_cache *memcache; + void *memcache; struct kvm_pgtable_mm_ops *mm_ops; }; @@ -670,7 +670,7 @@ static int stage2_map_walker(u64 addr, u64 end, u32 level, kvm_pte_t *ptep, int kvm_pgtable_stage2_map(struct kvm_pgtable *pgt, u64 addr, u64 size, u64 phys, enum kvm_pgtable_prot prot, - struct kvm_mmu_memory_cache *mc) + void *mc) { int ret; struct stage2_map_data map_data = { -- 2.31.0.rc2.261.g7f71774620-goog