From patchwork Sat Jul 22 02:22:42 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Raghavendra Rao Ananta X-Patchwork-Id: 13322715 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 4D821C04E69 for ; Sat, 22 Jul 2023 02:23:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230257AbjGVCXT (ORCPT ); Fri, 21 Jul 2023 22:23:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51930 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230429AbjGVCXC (ORCPT ); Fri, 21 Jul 2023 22:23:02 -0400 Received: from mail-ot1-x349.google.com (mail-ot1-x349.google.com [IPv6:2607:f8b0:4864:20::349]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7907A30ED for ; Fri, 21 Jul 2023 19:22:58 -0700 (PDT) Received: by mail-ot1-x349.google.com with SMTP id 46e09a7af769-6b886e8c29cso5652938a34.3 for ; Fri, 21 Jul 2023 19:22:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1689992577; x=1690597377; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=Ub1b4RkH+SiNL7JMG3rpDZe3A40I4dIIMSmDo0IlQzA=; b=mdoy5qzVWH2lXFeq+l8GrcDaZ/AZtpebOXZQbAycbvs9F3gc+FWUF9ZJWPljZ/WTZD N7E2CrdeVR5j4hLBJ6lRk+I7mY3w46nxq1+pryXFAKZcAm6ro0anIkD55cC7HYUHEtBl +dJrlJdeVINBllBXagJSINAu10sD/s1fUyDdrNYf7y42VzG1fL7GeDIkL7+WYoytIjDy GHMZhXrzf4o6R4qf5HOBkK1MFK9gmO6/4OMh2/Y3htnJZzNT+xxMwKlwZX5zfwWUZjjA VHLWteESBncMN/9UQw6Di221i0kp5JpanK4qcj2hiL8RK1AhymvQXKdy0Wc1MgLrg4t+ 08/A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1689992577; x=1690597377; 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=Ub1b4RkH+SiNL7JMG3rpDZe3A40I4dIIMSmDo0IlQzA=; b=IAr55JnfJrGlbnQaJFm7qrOBQNSQavf6x0xH3MfGNl5ldWR8hxHB9nlYGys7tCckGc VN+ieU41lKwEhYJBXLPjIG2PTJgrsr7HCxmNZrj/twsyQj5F7jNRuSSKDBqB4WN08Od9 nAD8OuQ6C3GEX1tXaqfMUuzZ79bn2aPcgLlum5nfZ0dIzBQBB5F8m8mDQylP6nC44g3m 7VkkFWjVfzfvxK70bx7tA+UVLgzyDUfpBue3UcGHJa7W413+bTSjNcZ+JVhNFiYrFoAx bT/H0usOTEWq7/QVWBslVSD/Ek7VlUqvJ/mAQ9L9N4r7f48TD9kqSq19cSV8DeZH/b1n iDew== X-Gm-Message-State: ABy/qLbOrfg7USkXgkFN3pbz9yKuFx5x2eo22kIszbHmUis0Pv03Hnzb dUgn+G+uIfHug2D5xkeJZah76DUMkbB3 X-Google-Smtp-Source: APBJJlFePHecSR1HloqjDSzzI/2i9CNM4+/1NwLnWrMA4yKuyKZVLYbN6w7CAOZHg5mvVOxwFFo83RQaKDLL X-Received: from rananta-linux.c.googlers.com ([fda3:e722:ac3:cc00:2b:ff92:c0a8:22b5]) (user=rananta job=sendgmr) by 2002:a9d:6d03:0:b0:6b9:cf90:87a6 with SMTP id o3-20020a9d6d03000000b006b9cf9087a6mr2197907otp.1.1689992577845; Fri, 21 Jul 2023 19:22:57 -0700 (PDT) Date: Sat, 22 Jul 2023 02:22:42 +0000 In-Reply-To: <20230722022251.3446223-1-rananta@google.com> Mime-Version: 1.0 References: <20230722022251.3446223-1-rananta@google.com> X-Mailer: git-send-email 2.41.0.487.g6d72f3e995-goog Message-ID: <20230722022251.3446223-4-rananta@google.com> Subject: [PATCH v7 03/12] 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 , 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 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 --- 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 b74916de5183..484d0873061c 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 70e5479797ac..d6b050786155 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) {