From patchwork Tue Aug 8 23:13:20 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Raghavendra Rao Ananta X-Patchwork-Id: 13347185 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 0151DC001DB for ; Tue, 8 Aug 2023 23:13:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231738AbjHHXNk (ORCPT ); Tue, 8 Aug 2023 19:13:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39454 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231748AbjHHXNk (ORCPT ); Tue, 8 Aug 2023 19:13:40 -0400 Received: from mail-yb1-xb49.google.com (mail-yb1-xb49.google.com [IPv6:2607:f8b0:4864:20::b49]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AFE6A199F for ; Tue, 8 Aug 2023 16:13:39 -0700 (PDT) Received: by mail-yb1-xb49.google.com with SMTP id 3f1490d57ef6-d47a02fc63fso4747519276.0 for ; Tue, 08 Aug 2023 16:13:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1691536419; x=1692141219; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=rRsJm5KN8y0omlFlyBVh6FOC8Y/5Pdk4ttGOceHQNGg=; b=CQf/TxanV6OEd32ELCfkkts3XxnHA4pKxGHkzWqcVZLhDHcGXQK8pxhlEmtKwP/tpP UAyUov8OA4rqJcX0xB4frWPFkoC8zGz0reXRyqNoFb6QQc7uiAJt57EURlLsfXhtvSua dVYnrRYGo2ZXskRE7T0A21bujPL542X8vcR00OPyT91QR3v88w0f/6FbYWXk1Xzn0erM sTAg25XQTO1XYYl95Z33YL5N1hptl2XY6pPHEzG2zsJje3brq/4ttctRSjL4Be7i5xzH VbfCPWiV7RKvMZQeOm7dW2jfJtV7whha+buhr6WES83vayzqgg3bRBsrouX7l2lyMHB5 9ejw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1691536419; x=1692141219; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=rRsJm5KN8y0omlFlyBVh6FOC8Y/5Pdk4ttGOceHQNGg=; b=jSXvfagfnzp78v1pKiWX23rVjvcaqVWWT0Za9hltLBRD+DWGHz61zpjpeW7K+tuizC nmv4dIP4yBcRnjmVrw9ZXR5ycyUG2cpBkL0ayGKf/pIGnGiwhuwvR47brGaHgpNID9wI XuABYY/Cwc379q2+BoEhzJz6CRT9umt/O3L0EGUSKhdP5CWZNUnWZIvUHFX1xZfHhMb2 jv3xtcPoNz6xg9LAl+yGOvuhozJMY/1PzU/o8GS3iGwrTUafIa+YKV7JVO5dOF6LgQWQ FxMCyv3kar7KL5NsX+u3lGr2d0lsPovSP3jEeL61oikFjuKpb+mLwjRFfYEIgrMcwAfV ktiw== X-Gm-Message-State: AOJu0Yw2tHKScLFLH2kbBMHfijyxyeAwhCoegBVoRhfyke68xzC0enBj /XfswQ47DYGRQ1pTJ0KCYwrJZsGuRHdZ X-Google-Smtp-Source: AGHT+IFGVRqil1pLKlKZOPozuSk7xjlyKiysAnrSD74F/QH1sqvC3Ds73i/UAyOLkTltrm9Gi6kXcopawKrT X-Received: from rananta-linux.c.googlers.com ([fda3:e722:ac3:cc00:2b:ff92:c0a8:22b5]) (user=rananta job=sendgmr) by 2002:a05:6902:1788:b0:d45:1b81:1154 with SMTP id ca8-20020a056902178800b00d451b811154mr21428ybb.2.1691536419023; Tue, 08 Aug 2023 16:13:39 -0700 (PDT) Date: Tue, 8 Aug 2023 23:13:20 +0000 In-Reply-To: <20230808231330.3855936-1-rananta@google.com> Mime-Version: 1.0 References: <20230808231330.3855936-1-rananta@google.com> X-Mailer: git-send-email 2.41.0.640.ga95def55d0-goog Message-ID: <20230808231330.3855936-5-rananta@google.com> Subject: [PATCH v8 04/14] KVM: Remove CONFIG_HAVE_KVM_ARCH_TLB_FLUSH_ALL From: Raghavendra Rao Ananta To: Oliver Upton , Marc Zyngier , James Morse , Suzuki K Poulose Cc: Paolo Bonzini , Sean Christopherson , Huacai Chen , Zenghui Yu , Anup Patel , Atish Patra , Jing Zhang , Reiji Watanabe , Colton Lewis , Raghavendra Rao Anata , David Matlack , Fuad Tabba , linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, linux-mips@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Shaoqin Huang Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org kvm_arch_flush_remote_tlbs() or CONFIG_HAVE_KVM_ARCH_TLB_FLUSH_ALL are two mechanisms to solve the same problem, allowing architecture-specific code to provide a non-IPI implementation of remote TLB flushing. Dropping CONFIG_HAVE_KVM_ARCH_TLB_FLUSH_ALL allows KVM to standardize all architectures on kvm_arch_flush_remote_tlbs() instead of maintaining two mechanisms. Signed-off-by: Raghavendra Rao Ananta Reviewed-by: Shaoqin Huang Reviewed-by: Gavin Shan Reviewed-by: Philippe Mathieu-Daudé --- virt/kvm/Kconfig | 3 --- virt/kvm/kvm_main.c | 2 -- 2 files changed, 5 deletions(-) diff --git a/virt/kvm/Kconfig b/virt/kvm/Kconfig index b74916de5183a..484d0873061ca 100644 --- a/virt/kvm/Kconfig +++ b/virt/kvm/Kconfig @@ -62,9 +62,6 @@ config HAVE_KVM_CPU_RELAX_INTERCEPT config KVM_VFIO bool -config HAVE_KVM_ARCH_TLB_FLUSH_ALL - bool - config HAVE_KVM_INVALID_WAKEUPS bool diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 70e5479797ac3..d6b0507861550 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -345,7 +345,6 @@ bool kvm_make_all_cpus_request(struct kvm *kvm, unsigned int req) } EXPORT_SYMBOL_GPL(kvm_make_all_cpus_request); -#ifndef CONFIG_HAVE_KVM_ARCH_TLB_FLUSH_ALL void kvm_flush_remote_tlbs(struct kvm *kvm) { ++kvm->stat.generic.remote_tlb_flush_requests; @@ -366,7 +365,6 @@ void kvm_flush_remote_tlbs(struct kvm *kvm) ++kvm->stat.generic.remote_tlb_flush; } EXPORT_SYMBOL_GPL(kvm_flush_remote_tlbs); -#endif static void kvm_flush_shadow_all(struct kvm *kvm) {