From nobody Wed Sep 17 05:54:26 2025 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 AB512EB64DD for ; Sat, 29 Jul 2023 01:37:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236580AbjG2BhS (ORCPT ); Fri, 28 Jul 2023 21:37:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47626 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237553AbjG2Bg6 (ORCPT ); Fri, 28 Jul 2023 21:36:58 -0400 Received: from mail-yw1-x1149.google.com (mail-yw1-x1149.google.com [IPv6:2607:f8b0:4864:20::1149]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 72648449C for ; Fri, 28 Jul 2023 18:36:26 -0700 (PDT) Received: by mail-yw1-x1149.google.com with SMTP id 00721157ae682-585fb08172bso680037b3.2 for ; Fri, 28 Jul 2023 18:36:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1690594567; x=1691199367; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=mQ+ZuzEFbl5O8mlpWOHgtbjc+Hc/5HoNzhozE45JaLU=; b=WZConVgDmS5EmLUtUW3mWU7S8RxEZOVUVAu20Avyg+dOT8q99nTIpuz55xULKWjISw iCAurxgWrZk5icw5zY5sztJnmPPEWtvRbD0q5iScqHoLph8A+Trwc9DE/7E+yCbSArRH 096LUklzL9PKq5+7HD3ZdjHqQKTNSLFEp4UUvOIah0va5NhjfqhpczKpIhbbpdSoqBDd /cGZ3dGKnFyE7j7LlLeysb6brynTp1h/cN3eXU8/k167F4MM7x8Jz4AMq8txNwYoq7kz AT8lnb9euANf7Knv+9SQX9b42mS+B949wl6d6R8Hqd1o33mEljeyuwvXAaZrbwAZKY5H xm0Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1690594567; x=1691199367; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=mQ+ZuzEFbl5O8mlpWOHgtbjc+Hc/5HoNzhozE45JaLU=; b=NVYjFOSjU1W2eH+/2+T0wd6xN9yRhPTbZB7NPckaOGexYRwaahEJx4R7wFKb1pWe9k jw6LuVbKkllORxzDVwT/LQP8IQV/mnlRkcPRdmPuK7cZ+GMpbwFFot6AiX54ozb2K5TQ 1XK7s0ke4JPiRLCWrpssPvpov14w1zkOWLYw/hFmUgqLk8aYplNxye1W4CndN2waCuXQ HBWJ0AgMpAx3QdjQ1jpd6z5KT+omurPkk3I9cmXQoreTXxyI3xxoPV9g13+x1lzXVPzp 4xIf8Up44AvKyb4QR+QRjbVsE9KImK17/Bl2hoSh0WrqGX6sTUxthiC2gWlMs9WY9CfV M+Lg== X-Gm-Message-State: ABy/qLa160CmFrx1c2H+yRfaONwzrMVMKMXlx+18sydF+PmjKbW9b85O edQ/xEJEReOlmuvIyiJssKKPjJc6cT8= X-Google-Smtp-Source: APBJJlFQ3hhnV1P7ciVR0dYoESD3XPJ++F/enrXhmW6nGDeuy1gJ4hjm9TqahxJ6bBSca1yu04RHJYuqicA= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a25:2057:0:b0:c41:4696:e879 with SMTP id g84-20020a252057000000b00c414696e879mr17328ybg.7.1690594566810; Fri, 28 Jul 2023 18:36:06 -0700 (PDT) Reply-To: Sean Christopherson Date: Fri, 28 Jul 2023 18:35:18 -0700 In-Reply-To: <20230729013535.1070024-1-seanjc@google.com> Mime-Version: 1.0 References: <20230729013535.1070024-1-seanjc@google.com> X-Mailer: git-send-email 2.41.0.487.g6d72f3e995-goog Message-ID: <20230729013535.1070024-13-seanjc@google.com> Subject: [PATCH v4 12/29] KVM: x86/mmu: Move kvm_arch_flush_shadow_{all,memslot}() to mmu.c From: Sean Christopherson To: Sean Christopherson , Paolo Bonzini , Zhenyu Wang , Zhi Wang Cc: kvm@vger.kernel.org, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, Yan Zhao , Yongwei Ma , Ben Gardon Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Move x86's implementation of kvm_arch_flush_shadow_{all,memslot}() into mmu.c, and make kvm_mmu_zap_all() static as it was globally visible only for kvm_arch_flush_shadow_all(). This will allow refactoring kvm_arch_flush_shadow_memslot() to call kvm_mmu_zap_all() directly without having to expose kvm_mmu_zap_all_fast() outside of mmu.c. Keeping everything in mmu.c will also likely simplify supporting TDX, which intends to do zap only relevant SPTEs on memslot updates. No functional change intended. Suggested-by: Yan Zhao Tested-by: Yongwei Ma Signed-off-by: Sean Christopherson Reviewed-by: Isaku Yamahata --- arch/x86/include/asm/kvm_host.h | 1 - arch/x86/kvm/mmu/mmu.c | 13 ++++++++++++- arch/x86/kvm/x86.c | 11 ----------- 3 files changed, 12 insertions(+), 13 deletions(-) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_hos= t.h index 28bd38303d70..856ec22aceb6 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1832,7 +1832,6 @@ void kvm_mmu_zap_collapsible_sptes(struct kvm *kvm, const struct kvm_memory_slot *memslot); void kvm_mmu_slot_leaf_clear_dirty(struct kvm *kvm, const struct kvm_memory_slot *memslot); -void kvm_mmu_zap_all(struct kvm *kvm); void kvm_mmu_invalidate_mmio_sptes(struct kvm *kvm, u64 gen); void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned long kvm_nr_mmu_pa= ges); =20 diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c index ec169f5c7dce..c6dee659d592 100644 --- a/arch/x86/kvm/mmu/mmu.c +++ b/arch/x86/kvm/mmu/mmu.c @@ -6732,7 +6732,7 @@ void kvm_mmu_slot_leaf_clear_dirty(struct kvm *kvm, */ } =20 -void kvm_mmu_zap_all(struct kvm *kvm) +static void kvm_mmu_zap_all(struct kvm *kvm) { struct kvm_mmu_page *sp, *node; LIST_HEAD(invalid_list); @@ -6757,6 +6757,17 @@ void kvm_mmu_zap_all(struct kvm *kvm) write_unlock(&kvm->mmu_lock); } =20 +void kvm_arch_flush_shadow_all(struct kvm *kvm) +{ + kvm_mmu_zap_all(kvm); +} + +void kvm_arch_flush_shadow_memslot(struct kvm *kvm, + struct kvm_memory_slot *slot) +{ + kvm_page_track_flush_slot(kvm, slot); +} + void kvm_mmu_invalidate_mmio_sptes(struct kvm *kvm, u64 gen) { WARN_ON(gen & KVM_MEMSLOT_GEN_UPDATE_IN_PROGRESS); diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index a6b9bea62fb8..059571d5abed 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -12776,17 +12776,6 @@ void kvm_arch_commit_memory_region(struct kvm *kvm, kvm_arch_free_memslot(kvm, old); } =20 -void kvm_arch_flush_shadow_all(struct kvm *kvm) -{ - kvm_mmu_zap_all(kvm); -} - -void kvm_arch_flush_shadow_memslot(struct kvm *kvm, - struct kvm_memory_slot *slot) -{ - kvm_page_track_flush_slot(kvm, slot); -} - static inline bool kvm_guest_apic_has_interrupt(struct kvm_vcpu *vcpu) { return (is_guest_mode(vcpu) && --=20 2.41.0.487.g6d72f3e995-goog