Message ID | 20230419221716.3603068-4-atishp@rivosinc.com |
---|---|
State | Changes Requested |
Headers | show
Return-Path: <kvm-riscv-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org> X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lists.infradead.org (client-ip=2607:7c80:54:3::133; helo=bombadil.infradead.org; envelope-from=kvm-riscv-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org; receiver=<UNKNOWN>) Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; secure) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=n5AfE/MM; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=rivosinc-com.20221208.gappssmtp.com header.i=@rivosinc-com.20221208.gappssmtp.com header.a=rsa-sha256 header.s=20221208 header.b=M7pMYKMh; dkim-atps=neutral Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384) server-digest SHA384) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4Q1xqQ39DDz23tg for <incoming@patchwork.ozlabs.org>; Thu, 20 Apr 2023 09:30:42 +1000 (AEST) 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:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=1XLnWHCIqdXKsLd4v3blnctaWAj/6DhjueMFuqBcmGw=; b=n5AfE/MMFqw1vm aAP/EqGPIgbFv/yIf3NIAFSR7ERtejpKQQTzlSk3Ld2QHR2fNwf/Am2zkqLAZolySO2s58r9EKhTw dAtR8xUi7MNSjIX1apQYyeMYCjmKgEUXKHQ77gXUZj+MUjDKEbkU5UnRKn5Z1Okv6/hptx5pgkwPz JUQONcifg72KGc7f5C+PjssTM710FIXXwikWdeZfYwv/GtVXc9nhaWbrI3MV9SlOEnCR+ByQ5jazo 9gvIvFofKeDBhN3tk8dRA5uqfdz0tqwOoL1fcZFMLcq/wAtJvSvyu2uoiOQlHPs2VhzwyYXuuBqso V7o/qhYTav8KN7LBYQAg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1ppHG4-006eTV-0y; Wed, 19 Apr 2023 23:30:40 +0000 Received: from mail-pl1-x636.google.com ([2607:f8b0:4864:20::636]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1ppG7M-006Sox-2z for kvm-riscv@lists.infradead.org; Wed, 19 Apr 2023 22:17:40 +0000 Received: by mail-pl1-x636.google.com with SMTP id d9443c01a7336-1a92513abebso5352795ad.2 for <kvm-riscv@lists.infradead.org>; Wed, 19 Apr 2023 15:17:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20221208.gappssmtp.com; s=20221208; t=1681942656; x=1684534656; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=QQ+Q1EB8U9VN9DkQE/7ZRwGYKH2CHxTB2A2ZNISqIdY=; b=M7pMYKMh2fzPlQxiN+Er+1mRXb5xsvVBR/kCf0Xc6I4eRmeu17ZWxN3F+8Uh4bOfYt pLsryNkeitFt3/g2LwdIO4gRgf1eK0d0zd3qJJmJH0/Ytd9PXb2f4ZIv2vw9qF7rcmT+ +/5fNVmr7py0CepFxvid91vQee8LTDJ1trxwVh1r+SZa6D1ybCiNK5WtQpwcXBYzwzon 14Dk5NjS3zvhDHWUiYkgfDVG/0CawxYwCekaOcRjbz+KKATicit8f2wKNBE+FUv2M2pL VFRS7BwOkXZ7Z6aFPV2U5r0uWlcE+ptOAW8XtsMKVeJj+vK+/KtMoB1U0hUKE2I995ZX 1ZPQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1681942656; x=1684534656; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=QQ+Q1EB8U9VN9DkQE/7ZRwGYKH2CHxTB2A2ZNISqIdY=; b=awTPCG/fnzl/3l1uQflf1SsYQJlqiNckUPIDPzqnNUNGPRhVQBrpvjHN/1DbJWkop4 eVgbwR13U6rQaev5wtQf2yrfLzZLnG170O5wUMHyCmNfdDglTbxMHuDJ0c97NREKYBCu pNmwPoIDZRYeKvhsYo/7MK904Fz8d9NnG5DlL2DUMsRXY02LiqSwCZE8JznJ2h6TXRgd Hcy3QKEe0EngCkGe/EEAba6u8Gx63F1J9/1yq7Ygcf6A6ZpZ2ScqGiVJmJwwbeUDZb5W abh+XZB8seV2D22MPxvKZ6wKxbiiBmLI2GkeoDlPGcHcM4r5rjl5qYaaalpaW4t9yzeP UuVw== X-Gm-Message-State: AAQBX9fUNqpya8SvDwPoSXqWpotvJ/eRcwZJBV9dcnTln7bcKUAHC+ul f8ATFDvTrZ/DBYOCRBUT21JSzQ== X-Google-Smtp-Source: AKy350ZJUiSSYrDjl7yi3RGe7KkMi+TjKSL1H9rjEJIsWoSyzpH0Qljb3g4DlHLMrKbT1BFQ8UiTyA== X-Received: by 2002:a17:902:6bc1:b0:1a6:81fc:b585 with SMTP id m1-20020a1709026bc100b001a681fcb585mr6201339plt.41.1681942656169; Wed, 19 Apr 2023 15:17:36 -0700 (PDT) Received: from atishp.ba.rivosinc.com ([66.220.2.162]) by smtp.gmail.com with ESMTPSA id jn11-20020a170903050b00b00196807b5189sm11619190plb.292.2023.04.19.15.17.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Apr 2023 15:17:35 -0700 (PDT) From: Atish Patra <atishp@rivosinc.com> To: linux-kernel@vger.kernel.org Cc: Atish Patra <atishp@rivosinc.com>, Alexandre Ghiti <alex@ghiti.fr>, Andrew Jones <ajones@ventanamicro.com>, Andrew Morton <akpm@linux-foundation.org>, Anup Patel <anup@brainfault.org>, Atish Patra <atishp@atishpatra.org>, =?utf-8?b?QmrDtnJuIFTDtnBlbA==?= <bjorn@rivosinc.com>, Suzuki K Poulose <suzuki.poulose@arm.com>, Will Deacon <will@kernel.org>, Marc Zyngier <maz@kernel.org>, Sean Christopherson <seanjc@google.com>, linux-coco@lists.linux.dev, Dylan Reid <dylan@rivosinc.com>, abrestic@rivosinc.com, Samuel Ortiz <sameo@rivosinc.com>, Christoph Hellwig <hch@infradead.org>, Conor Dooley <conor.dooley@microchip.com>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Guo Ren <guoren@kernel.org>, Heiko Stuebner <heiko@sntech.de>, Jiri Slaby <jirislaby@kernel.org>, kvm-riscv@lists.infradead.org, kvm@vger.kernel.org, linux-mm@kvack.org, linux-riscv@lists.infradead.org, Mayuresh Chitale <mchitale@ventanamicro.com>, Palmer Dabbelt <palmer@dabbelt.com>, Paolo Bonzini <pbonzini@redhat.com>, Paul Walmsley <paul.walmsley@sifive.com>, Rajnesh Kanwal <rkanwal@rivosinc.com>, Uladzislau Rezki <urezki@gmail.com> Subject: [RFC 03/48] RISC-V: KVM: Invoke aia_update with preempt disabled/irq enabled Date: Wed, 19 Apr 2023 15:16:31 -0700 Message-Id: <20230419221716.3603068-4-atishp@rivosinc.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230419221716.3603068-1-atishp@rivosinc.com> References: <20230419221716.3603068-1-atishp@rivosinc.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230419_151736_991793_5CDAA5B0 X-CRM114-Status: GOOD ( 10.81 ) X-Spam-Score: 0.0 (/) X-Spam-Report: Spam detection software, running on the system "bombadil.infradead.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Some of the aia_update operations required to invoke IPIs that needs interrupts to be enabled. Currently, entire aia_update is being called from irqs disabled context while only preemption disable is [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [2607:f8b0:4864:20:0:0:0:636 listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid X-BeenThere: kvm-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: <kvm-riscv.lists.infradead.org> List-Unsubscribe: <http://lists.infradead.org/mailman/options/kvm-riscv>, <mailto:kvm-riscv-request@lists.infradead.org?subject=unsubscribe> List-Archive: <http://lists.infradead.org/pipermail/kvm-riscv/> List-Post: <mailto:kvm-riscv@lists.infradead.org> List-Help: <mailto:kvm-riscv-request@lists.infradead.org?subject=help> List-Subscribe: <http://lists.infradead.org/mailman/listinfo/kvm-riscv>, <mailto:kvm-riscv-request@lists.infradead.org?subject=subscribe> Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "kvm-riscv" <kvm-riscv-bounces@lists.infradead.org> Errors-To: kvm-riscv-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org |
Series |
RISC-V CoVE support
|
expand
|
diff --git a/arch/riscv/kvm/vcpu.c b/arch/riscv/kvm/vcpu.c index e65852d..c53bf98 100644 --- a/arch/riscv/kvm/vcpu.c +++ b/arch/riscv/kvm/vcpu.c @@ -1247,15 +1247,16 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu) kvm_riscv_check_vcpu_requests(vcpu); - local_irq_disable(); - /* Update AIA HW state before entering guest */ + preempt_disable(); ret = kvm_riscv_vcpu_aia_update(vcpu); if (ret <= 0) { - local_irq_enable(); + preempt_enable(); continue; } + preempt_enable(); + local_irq_disable(); /* * Ensure we set mode to IN_GUEST_MODE after we disable * interrupts and before the final VCPU requests check.
Some of the aia_update operations required to invoke IPIs that needs interrupts to be enabled. Currently, entire aia_update is being called from irqs disabled context while only preemption disable is necessary. Signed-off-by: Atish Patra <atishp@rivosinc.com> --- arch/riscv/kvm/vcpu.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)