From patchwork Fri Mar 11 00:25:15 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Matlack X-Patchwork-Id: 12777153 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CE352C433F5 for ; Fri, 11 Mar 2022 00:25:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345194AbiCKA06 (ORCPT ); Thu, 10 Mar 2022 19:26:58 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48982 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241101AbiCKA05 (ORCPT ); Thu, 10 Mar 2022 19:26:57 -0500 Received: from mail-pl1-x64a.google.com (mail-pl1-x64a.google.com [IPv6:2607:f8b0:4864:20::64a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B83901A271A for ; Thu, 10 Mar 2022 16:25:53 -0800 (PST) Received: by mail-pl1-x64a.google.com with SMTP id e7-20020a170902ef4700b00151de30039bso3547510plx.17 for ; Thu, 10 Mar 2022 16:25:53 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=v7qCsbgsr/gR22mozQcF+sQ2jUkkViok2U86H9+3SCg=; b=sxbiv6bxYZKji+KMkwgFhZgmKilK+x7JKaeklm0aaY/0tPHo6PqSDrSP8HWopQYwNb nYjE55/Ylu41BjN1Wr8tR6Vj6dzqCF34FD3W/C18qtOwHO8+ZBiBG1Y+12IK5ZU+3UoP CC+BQNMbs5hN4UK+uFlYFs4kOqkifWM+N5qlJK7DTJ7axe2fdbrrMPmRjJrIVbzuWq0r 3k81g/OAwBL5gKGcgy6IkuE3EHezxxR9kafqxsj1rgsGhwauVhdI2uyKyMeYKz8leCWX I4Bqze8qQcKReoPNBhoTBprcMm2NQA/bx4Z1RgJ2wXF5sWAbMswIfJlKoVg2OV4VMNvY kgtw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=v7qCsbgsr/gR22mozQcF+sQ2jUkkViok2U86H9+3SCg=; b=g42T21NFLizv7acG38WlPRz4M2Kizg1ajqpdehp1dJLHUj7E/iI3M77QPmQNBjOQeJ ya62iIP8xMcqdHYj1QbLWLG6Gv/5k3f9kKaGyGM194av6ODzRpqRbs+dYyNomc759q7v fZRPGKTkpUoZGOiOts5ObIdxVFKu/q0nYkp/JnDHu3bRVI379goqSnGycChFoJqES+9C Xi7bVRFZqTlE1XSg8cfMqxyllkCQO2h+IKnbGEWLNpIrm3NP1zXT1QGLs5NpuVFAVRYZ QtLqY2n5bGYnTOfaF5q07uP4KUcLel2ohrAZ2m0Wy6aRF4/3+2jUabL62V3O3b1B+b7h Saww== X-Gm-Message-State: AOAM530DdCpkVcmsLO4I6msyTbjS1hGXVgslstxBO+tWUTZ1ok9Qrhx/ S6c+eJN6ud6dc96nLzt4gWzip70MF4ZmBA== X-Google-Smtp-Source: ABdhPJzvjuqM/MeknIQuH530q9QhRKE8ELO29h5EvZaK896mLaUdORuS4wDYPcFM+SuVielHfBcrazhJK1uDSA== X-Received: from dmatlack-heavy.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:19cd]) (user=dmatlack job=sendgmr) by 2002:a17:902:be18:b0:153:2444:9c1a with SMTP id r24-20020a170902be1800b0015324449c1amr4691462pls.152.1646958353220; Thu, 10 Mar 2022 16:25:53 -0800 (PST) Date: Fri, 11 Mar 2022 00:25:15 +0000 In-Reply-To: <20220311002528.2230172-1-dmatlack@google.com> Message-Id: <20220311002528.2230172-14-dmatlack@google.com> Mime-Version: 1.0 References: <20220311002528.2230172-1-dmatlack@google.com> X-Mailer: git-send-email 2.35.1.723.g4982287a31-goog Subject: [PATCH v2 13/26] KVM: x86/mmu: Pass const memslot to init_shadow_page() and descendants From: David Matlack To: Paolo Bonzini Cc: Marc Zyngier , Huacai Chen , Aleksandar Markovic , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou , Sean Christopherson , Andrew Jones , Ben Gardon , Peter Xu , maciej.szmigiero@oracle.com, "moderated list:KERNEL VIRTUAL MACHINE FOR ARM64 (KVM/arm64)" , "open list:KERNEL VIRTUAL MACHINE FOR MIPS (KVM/mips)" , "open list:KERNEL VIRTUAL MACHINE FOR MIPS (KVM/mips)" , "open list:KERNEL VIRTUAL MACHINE FOR RISC-V (KVM/riscv)" , Peter Feiner , David Matlack Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org Use a const pointer so that init_shadow_page() can be called from contexts where we have a const pointer. No functional change intended. Reviewed-by: Ben Gardon Signed-off-by: David Matlack --- arch/x86/include/asm/kvm_page_track.h | 2 +- arch/x86/kvm/mmu/mmu.c | 6 +++--- arch/x86/kvm/mmu/mmu_internal.h | 2 +- arch/x86/kvm/mmu/page_track.c | 4 ++-- arch/x86/kvm/mmu/tdp_mmu.c | 2 +- arch/x86/kvm/mmu/tdp_mmu.h | 2 +- 6 files changed, 9 insertions(+), 9 deletions(-) diff --git a/arch/x86/include/asm/kvm_page_track.h b/arch/x86/include/asm/kvm_page_track.h index eb186bc57f6a..3a2dc183ae9a 100644 --- a/arch/x86/include/asm/kvm_page_track.h +++ b/arch/x86/include/asm/kvm_page_track.h @@ -58,7 +58,7 @@ int kvm_page_track_create_memslot(struct kvm *kvm, unsigned long npages); void kvm_slot_page_track_add_page(struct kvm *kvm, - struct kvm_memory_slot *slot, gfn_t gfn, + const struct kvm_memory_slot *slot, gfn_t gfn, enum kvm_page_track_mode mode); void kvm_slot_page_track_remove_page(struct kvm *kvm, struct kvm_memory_slot *slot, gfn_t gfn, diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c index 23c0a36ac93f..d7ad71be6c52 100644 --- a/arch/x86/kvm/mmu/mmu.c +++ b/arch/x86/kvm/mmu/mmu.c @@ -794,7 +794,7 @@ void kvm_mmu_gfn_allow_lpage(const struct kvm_memory_slot *slot, gfn_t gfn) } static void account_shadowed(struct kvm *kvm, - struct kvm_memory_slot *slot, + const struct kvm_memory_slot *slot, struct kvm_mmu_page *sp) { gfn_t gfn; @@ -1373,7 +1373,7 @@ int kvm_cpu_dirty_log_size(void) } bool kvm_mmu_slot_gfn_write_protect(struct kvm *kvm, - struct kvm_memory_slot *slot, u64 gfn, + const struct kvm_memory_slot *slot, u64 gfn, int min_level) { struct kvm_rmap_head *rmap_head; @@ -2151,7 +2151,7 @@ static struct kvm_mmu_page *kvm_mmu_find_shadow_page(struct kvm_vcpu *vcpu, } static void init_shadow_page(struct kvm *kvm, struct kvm_mmu_page *sp, - struct kvm_memory_slot *slot, gfn_t gfn, + const struct kvm_memory_slot *slot, gfn_t gfn, union kvm_mmu_page_role role) { struct hlist_head *sp_list; diff --git a/arch/x86/kvm/mmu/mmu_internal.h b/arch/x86/kvm/mmu/mmu_internal.h index d4e2de5f2a6d..b6e22ba9c654 100644 --- a/arch/x86/kvm/mmu/mmu_internal.h +++ b/arch/x86/kvm/mmu/mmu_internal.h @@ -134,7 +134,7 @@ int mmu_try_to_unsync_pages(struct kvm *kvm, const struct kvm_memory_slot *slot, void kvm_mmu_gfn_disallow_lpage(const struct kvm_memory_slot *slot, gfn_t gfn); void kvm_mmu_gfn_allow_lpage(const struct kvm_memory_slot *slot, gfn_t gfn); bool kvm_mmu_slot_gfn_write_protect(struct kvm *kvm, - struct kvm_memory_slot *slot, u64 gfn, + const struct kvm_memory_slot *slot, u64 gfn, int min_level); void kvm_flush_remote_tlbs_with_address(struct kvm *kvm, u64 start_gfn, u64 pages); diff --git a/arch/x86/kvm/mmu/page_track.c b/arch/x86/kvm/mmu/page_track.c index 2e09d1b6249f..3e7901294573 100644 --- a/arch/x86/kvm/mmu/page_track.c +++ b/arch/x86/kvm/mmu/page_track.c @@ -84,7 +84,7 @@ int kvm_page_track_write_tracking_alloc(struct kvm_memory_slot *slot) return 0; } -static void update_gfn_track(struct kvm_memory_slot *slot, gfn_t gfn, +static void update_gfn_track(const struct kvm_memory_slot *slot, gfn_t gfn, enum kvm_page_track_mode mode, short count) { int index, val; @@ -112,7 +112,7 @@ static void update_gfn_track(struct kvm_memory_slot *slot, gfn_t gfn, * @mode: tracking mode, currently only write track is supported. */ void kvm_slot_page_track_add_page(struct kvm *kvm, - struct kvm_memory_slot *slot, gfn_t gfn, + const struct kvm_memory_slot *slot, gfn_t gfn, enum kvm_page_track_mode mode) { diff --git a/arch/x86/kvm/mmu/tdp_mmu.c b/arch/x86/kvm/mmu/tdp_mmu.c index f285fd76717b..85b7bc333302 100644 --- a/arch/x86/kvm/mmu/tdp_mmu.c +++ b/arch/x86/kvm/mmu/tdp_mmu.c @@ -1768,7 +1768,7 @@ static bool write_protect_gfn(struct kvm *kvm, struct kvm_mmu_page *root, * Returns true if an SPTE was set and a TLB flush is needed. */ bool kvm_tdp_mmu_write_protect_gfn(struct kvm *kvm, - struct kvm_memory_slot *slot, gfn_t gfn, + const struct kvm_memory_slot *slot, gfn_t gfn, int min_level) { struct kvm_mmu_page *root; diff --git a/arch/x86/kvm/mmu/tdp_mmu.h b/arch/x86/kvm/mmu/tdp_mmu.h index 54bc8118c40a..8308bfa4126b 100644 --- a/arch/x86/kvm/mmu/tdp_mmu.h +++ b/arch/x86/kvm/mmu/tdp_mmu.h @@ -42,7 +42,7 @@ void kvm_tdp_mmu_zap_collapsible_sptes(struct kvm *kvm, const struct kvm_memory_slot *slot); bool kvm_tdp_mmu_write_protect_gfn(struct kvm *kvm, - struct kvm_memory_slot *slot, gfn_t gfn, + const struct kvm_memory_slot *slot, gfn_t gfn, int min_level); void kvm_tdp_mmu_try_split_huge_pages(struct kvm *kvm,