From mboxrd@z Thu Jan 1 00:00:00 1970 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 EAC20CA0EEB for ; Thu, 21 Aug 2025 04:49:00 +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: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=Hfcq3zO7mIPdES6FtUWWqes09hwsJE73hG/G5kiafqU=; b=1sy/bsNcqMdpTt U916fgZdB3ulfKXuvagjqO2FZ4yqhz6hTYUX9DvhTqBEN1Bjb5f0d3MNXL/b1EoY8R9oBfPPft81i eZysmuVgWmONDslXB4UCr/k1FRCf4l18abk7L5MHEooN2yfiW4+UhGXLVmKeut03jhymlUqzN6gFx I8FASKFgwlLfyK9fiAzga5QqpIZbsHza6Yk8cGPFhEfbwcs7jQoJvwCoJoBbyvI6t4+tG+elM7Og3 HhqUza65yvL82rRlovoFa7ImGgWb93uAij1TYX4qD6Rs3GeTxEB9ppBCpmq97Dpi3dNcNmGZuniR4 cEiUh6ndRw3iNKXCE4+A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uoxES-0000000FpDS-2WrT; Thu, 21 Aug 2025 04:49:00 +0000 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uovo5-0000000FbuM-0pnU; Thu, 21 Aug 2025 03:17:42 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 82FB843733; Thu, 21 Aug 2025 03:17:39 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B18E6C4CEF4; Thu, 21 Aug 2025 03:17:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1755746259; bh=CBOysjUe33h5qBQdWPGsKZycqcns/K6/wD6KCp8bJ4M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gERcbd2EuZ5hjCz6I/jeym8J3EtLtekmyIuMroYF7gM9WQFIylCeQu1vHpKDbNN50 qgig2GOUoHsHwrZ0eVUJYRrb8qMifxNkRh8yODx146yCCz+OKihkkgeVt27nCbmo2x wTrWU6rOpl/D+IYNyT4TetLt/dI9AlUKioCA3A5cEu6twe14BdqjQf3vL57aL1lK6X 1Gi9UpplCQ/mQ/beqxvv3tnOlkXCAKWHRpmdbycU+b7T3OBsILddI14pJd97bDoi9K m10+ihe31cgcBljRdtYo2avcMJXS4P9/Ben6ge0TNGq/pMWTMzQvaNFz8lX++E8bKM EJlnV/NyP6/MQ== From: guoren@kernel.org To: guoren@kernel.org, troy.mitchell@linux.dev Cc: alex@ghiti.fr, anup@brainfault.org, aou@eecs.berkeley.edu, atish.patra@linux.dev, fangyu.yu@linux.alibaba.com, guoren@linux.alibaba.com, kvm-riscv@lists.infradead.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, palmer@dabbelt.com, paul.walmsley@sifive.com Subject: [PATCH V4 0/3] Fixup & optimize hgatp mode & vmid detect functions Date: Wed, 20 Aug 2025 23:17:15 -0400 Message-Id: <20250821031719.2366017-1-guoren@kernel.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: References: MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250820_201741_260359_B3812999 X-CRM114-Status: UNSURE ( 6.51 ) X-CRM114-Notice: Please train this message. X-BeenThere: kvm-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "kvm-riscv" Errors-To: kvm-riscv-bounces+kvm-riscv=archiver.kernel.org@lists.infradead.org From: "Guo Ren (Alibaba DAMO Academy)" Here are serval fixup & optmizitions for hgatp detect according to the RISC-V Privileged Architecture Spec. --- Changes in v4: - Involve ("RISC-V: KVM: Prevent HGATP_MODE_BARE passed"), which explain why gstage_mode_detect needs reset HGATP to zero. Changes in v3: - Add "Fixes" tag. - Involve("RISC-V: KVM: Remove unnecessary HGATP csr_read"), which depends on patch 1. Changes in v2: - Fixed build error since kvm_riscv_gstage_mode() has been modified. --- Fangyu Yu (1): RISC-V: KVM: Write hgatp register with valid mode bits Guo Ren (Alibaba DAMO Academy) (2): RISC-V: KVM: Remove unnecessary HGATP csr_read RISC-V: KVM: Prevent HGATP_MODE_BARE passed arch/riscv/kvm/gstage.c | 27 ++++++++++++++++++++++++--- arch/riscv/kvm/main.c | 35 +++++++++++++++++------------------ arch/riscv/kvm/vmid.c | 8 +++----- 3 files changed, 44 insertions(+), 26 deletions(-) -- 2.40.1 -- kvm-riscv mailing list kvm-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kvm-riscv From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CD4FC18C933; Thu, 21 Aug 2025 03:17:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755746259; cv=none; b=E9UDxhXRPkUP4vNvbD0kqsp/B2QaAVegzLFFhNuhI/aSui7chHNGvZVzKKt5PxcxYIVJsKl8eOmcqXf6wfuqaLMH5Sn+U7VzR/QLZW+2v7mFow6pkYEebIJdfew7zAz2RyQLEgEYXgWDphVgiTbTrgUl5ayOAQovGhqUosV4qAA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755746259; c=relaxed/simple; bh=CBOysjUe33h5qBQdWPGsKZycqcns/K6/wD6KCp8bJ4M=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=EV2Yj6OaqN9HZPi7ZzHutKgAo7TjPSpyqVDdAPF01fre+pXKGwGVzY2eVPqrLNKpaPI0IoMuIXo8GNbKzgueKylb+NCisS7YmVJsxw9WvM+Cec5zkikXTMq1PxcE0OvKjfH6ozdR0xkaeYjPgkah7P6lQKWkQepR5zSXOxyifKk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=gERcbd2E; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="gERcbd2E" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B18E6C4CEF4; Thu, 21 Aug 2025 03:17:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1755746259; bh=CBOysjUe33h5qBQdWPGsKZycqcns/K6/wD6KCp8bJ4M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gERcbd2EuZ5hjCz6I/jeym8J3EtLtekmyIuMroYF7gM9WQFIylCeQu1vHpKDbNN50 qgig2GOUoHsHwrZ0eVUJYRrb8qMifxNkRh8yODx146yCCz+OKihkkgeVt27nCbmo2x wTrWU6rOpl/D+IYNyT4TetLt/dI9AlUKioCA3A5cEu6twe14BdqjQf3vL57aL1lK6X 1Gi9UpplCQ/mQ/beqxvv3tnOlkXCAKWHRpmdbycU+b7T3OBsILddI14pJd97bDoi9K m10+ihe31cgcBljRdtYo2avcMJXS4P9/Ben6ge0TNGq/pMWTMzQvaNFz8lX++E8bKM EJlnV/NyP6/MQ== From: guoren@kernel.org To: guoren@kernel.org, troy.mitchell@linux.dev Cc: alex@ghiti.fr, anup@brainfault.org, aou@eecs.berkeley.edu, atish.patra@linux.dev, fangyu.yu@linux.alibaba.com, guoren@linux.alibaba.com, kvm-riscv@lists.infradead.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, palmer@dabbelt.com, paul.walmsley@sifive.com Subject: [PATCH V4 0/3] Fixup & optimize hgatp mode & vmid detect functions Date: Wed, 20 Aug 2025 23:17:15 -0400 Message-Id: <20250821031719.2366017-1-guoren@kernel.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: "Guo Ren (Alibaba DAMO Academy)" Here are serval fixup & optmizitions for hgatp detect according to the RISC-V Privileged Architecture Spec. --- Changes in v4: - Involve ("RISC-V: KVM: Prevent HGATP_MODE_BARE passed"), which explain why gstage_mode_detect needs reset HGATP to zero. Changes in v3: - Add "Fixes" tag. - Involve("RISC-V: KVM: Remove unnecessary HGATP csr_read"), which depends on patch 1. Changes in v2: - Fixed build error since kvm_riscv_gstage_mode() has been modified. --- Fangyu Yu (1): RISC-V: KVM: Write hgatp register with valid mode bits Guo Ren (Alibaba DAMO Academy) (2): RISC-V: KVM: Remove unnecessary HGATP csr_read RISC-V: KVM: Prevent HGATP_MODE_BARE passed arch/riscv/kvm/gstage.c | 27 ++++++++++++++++++++++++--- arch/riscv/kvm/main.c | 35 +++++++++++++++++------------------ arch/riscv/kvm/vmid.c | 8 +++----- 3 files changed, 44 insertions(+), 26 deletions(-) -- 2.40.1 From mboxrd@z Thu Jan 1 00:00:00 1970 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 2D744CA0EFA for ; Thu, 21 Aug 2025 04:49:08 +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: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=g3EgVngQadJEIt7rMXNZFdDP7rjEVQUXtGiBW+SpO1w=; b=2wCI6cZ3ImSxKd uxAx8x2S5nfxl6bKWDb5qV4c5Owc4zRXisaM26aTPpi3p8pcP0lnuW8WBaqLy+LBrvVx1ZMoAnbBF G9AHpyx46dT1PT29ic5SmOD0y2K2c0VpQOv2i/jxClAaPvyQZf3mXPyuQITKB4y7qoxU+fKf7KYQn yV8d7mZ/1BwXPbu9zDOBjBpwWEuW7pX+AzdTaODkJ/LK42mLOAAH+7auFsYjKQLLnysDS+08N19v3 IoWC4gOkPCrQwMA07Iq1eVLx4Pg6/f1TZQVYHQXZghDmyZUN+8soGdS5hH37DP4XMeEy64q/OYxlw yWPXRvtkN5xaYoLH7wVg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uoxES-0000000FpE1-3rPb; Thu, 21 Aug 2025 04:49:00 +0000 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uovo5-0000000FbuM-0pnU; Thu, 21 Aug 2025 03:17:42 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 82FB843733; Thu, 21 Aug 2025 03:17:39 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B18E6C4CEF4; Thu, 21 Aug 2025 03:17:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1755746259; bh=CBOysjUe33h5qBQdWPGsKZycqcns/K6/wD6KCp8bJ4M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gERcbd2EuZ5hjCz6I/jeym8J3EtLtekmyIuMroYF7gM9WQFIylCeQu1vHpKDbNN50 qgig2GOUoHsHwrZ0eVUJYRrb8qMifxNkRh8yODx146yCCz+OKihkkgeVt27nCbmo2x wTrWU6rOpl/D+IYNyT4TetLt/dI9AlUKioCA3A5cEu6twe14BdqjQf3vL57aL1lK6X 1Gi9UpplCQ/mQ/beqxvv3tnOlkXCAKWHRpmdbycU+b7T3OBsILddI14pJd97bDoi9K m10+ihe31cgcBljRdtYo2avcMJXS4P9/Ben6ge0TNGq/pMWTMzQvaNFz8lX++E8bKM EJlnV/NyP6/MQ== From: guoren@kernel.org To: guoren@kernel.org, troy.mitchell@linux.dev Cc: alex@ghiti.fr, anup@brainfault.org, aou@eecs.berkeley.edu, atish.patra@linux.dev, fangyu.yu@linux.alibaba.com, guoren@linux.alibaba.com, kvm-riscv@lists.infradead.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, palmer@dabbelt.com, paul.walmsley@sifive.com Subject: [PATCH V4 0/3] Fixup & optimize hgatp mode & vmid detect functions Date: Wed, 20 Aug 2025 23:17:15 -0400 Message-Id: <20250821031719.2366017-1-guoren@kernel.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: References: MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250820_201741_260359_B3812999 X-CRM114-Status: UNSURE ( 6.51 ) 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: "Guo Ren (Alibaba DAMO Academy)" Here are serval fixup & optmizitions for hgatp detect according to the RISC-V Privileged Architecture Spec. --- Changes in v4: - Involve ("RISC-V: KVM: Prevent HGATP_MODE_BARE passed"), which explain why gstage_mode_detect needs reset HGATP to zero. Changes in v3: - Add "Fixes" tag. - Involve("RISC-V: KVM: Remove unnecessary HGATP csr_read"), which depends on patch 1. Changes in v2: - Fixed build error since kvm_riscv_gstage_mode() has been modified. --- Fangyu Yu (1): RISC-V: KVM: Write hgatp register with valid mode bits Guo Ren (Alibaba DAMO Academy) (2): RISC-V: KVM: Remove unnecessary HGATP csr_read RISC-V: KVM: Prevent HGATP_MODE_BARE passed arch/riscv/kvm/gstage.c | 27 ++++++++++++++++++++++++--- arch/riscv/kvm/main.c | 35 +++++++++++++++++------------------ arch/riscv/kvm/vmid.c | 8 +++----- 3 files changed, 44 insertions(+), 26 deletions(-) -- 2.40.1 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv