From patchwork Fri Aug 11 04:51:17 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: 13350120 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 53B5EC0015E for ; Fri, 11 Aug 2023 04:52:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Cc:To:From:Subject:Message-ID: References:Mime-Version:In-Reply-To:Date:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=6O73bV0idNjI67DAbQlJZkz4ehE8as4OSWknHwW5QvQ=; b=zzew6NUO8aeu1XiiYp3fijvW70 Lv9Fq4pj2G7843mnWVQeOFWolwHlSLKTVHINZnJfGpDWVrOkhQygHcfeXAqEY7mNed6pwOTowOOEh XY581AnJcdm2CjunWjljxeaQgcC9DbEUAMlvWO8TLhz39cXobgdimHl5JbqNQBWauCYobwSGa4P8n ajNgoD923pcDEUPxMLsk4ujAIQyNB2U9AKBhDfFIkkxp8nH5GEqtRPwqXp7HV9F+Xu5XSi6lvAGBp PAEiQ70Jgwsc50/5k0Wn/IE09+K1x3eUDMibJXldVHLS0LE8LzMUzT7ZiMkCOdbdsGhYaFjRsBg2/ OKyT2twg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qUK83-009Pnr-0L; Fri, 11 Aug 2023 04:52:03 +0000 Received: from mail-oa1-x49.google.com ([2001:4860:4864:20::49]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qUK7h-009PTd-1j for linux-riscv@lists.infradead.org; Fri, 11 Aug 2023 04:51:46 +0000 Received: by mail-oa1-x49.google.com with SMTP id 586e51a60fabf-1bb6fe22b11so1805411fac.3 for ; Thu, 10 Aug 2023 21:51:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1691729499; x=1692334299; h=content-transfer-encoding:cc:to:from:subject:message-id:references :mime-version:in-reply-to:date:from:to:cc:subject:date:message-id :reply-to; bh=KMunAMeBPKEY9T5yrPL+aMpFgaQV0/xsp/XormRaoBM=; b=oGyGjViqZNQB5Og/8KSGJT7aIHo2wwBSCnK8zrh4WX1dkLcj8j7++RIJ6MMhwLKJJM TFwYrscibPCB3QmC1vwbGjOxG+yFgDZoqgTW46Q0I43fh6plUvYPK40YZO8XMwTjrOdi fnlSk08NlXYIbGNj/3hHqeyZAiHuO84I1eN3h2UfQvsIoxOYp1344xAWxUoDUNlguK/d 5kLKAQj90+6/pX7UAxmtBlnRcJeCRHfDdeQh/yfwKQtOSPDaI07tcbauCsIMB854pARh XzBdqJA4i4gXWPKDMXc/sVC1BnOhZZ28pfZehmEJ44oNDRLqO12bBeCK/TDek5KZpg/u BZkg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1691729499; x=1692334299; h=content-transfer-encoding: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=KMunAMeBPKEY9T5yrPL+aMpFgaQV0/xsp/XormRaoBM=; b=aQVb3Qm32499B32xB9sFarDXKVV+tFOAy49Xz2gzAZlrZH668wvTtPUxZ669zTCjFP svm6ZPEbOdCz5X1P2U5yc9ths3UWpNKUkE8WB2TUkKJJBh4s5NbafUrGBdOBTUaqGqwB dnZajjbweLOTbKJq/atpwU+wPnz21VNV4eZWaKvX1qI95i82OVvVJIV3hgQ9n2qq6KnJ NT0kJ+X3noM7rgAOzoL+RwDB9oOKzi1CvbV/ahbyrx7HXby/J5B8XsFD+yZBfpy3rU5L jnWhoqOMPoUWWphtgUOOv/yVhA5jHgs3DqZhKXY+0Vrn92CVBB49nhw4ovxBSDXXjbBY vLsQ== X-Gm-Message-State: AOJu0Yy9Vn9bGhgfVosgcOfz8qCLDAMJDRNrDIyyTfO+WFdYHECNOBfD 2EdRYBveWK4Yg7qtQSDaTsMVaB7TDIxF X-Google-Smtp-Source: AGHT+IE6iu8kZBBGXiPktI0w4Wht3tt9FXqeaiP6SFiaZO7WXbsaeVAitcRGbh4LxMh2/nvqjLQ5ZRjkCZrA X-Received: from rananta-linux.c.googlers.com ([fda3:e722:ac3:cc00:2b:ff92:c0a8:22b5]) (user=rananta job=sendgmr) by 2002:a05:6870:1ab5:b0:1c0:e9e9:ae91 with SMTP id ef53-20020a0568701ab500b001c0e9e9ae91mr13992oab.3.1691729499613; Thu, 10 Aug 2023 21:51:39 -0700 (PDT) Date: Fri, 11 Aug 2023 04:51:17 +0000 In-Reply-To: <20230811045127.3308641-1-rananta@google.com> Mime-Version: 1.0 References: <20230811045127.3308641-1-rananta@google.com> X-Mailer: git-send-email 2.41.0.640.ga95def55d0-goog Message-ID: <20230811045127.3308641-5-rananta@google.com> Subject: [PATCH v9 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 , Gavin Shan , " =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= " X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230810_215141_661934_FC5A62DE X-CRM114-Status: UNSURE ( 7.50 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.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) {