[{"id":3683460,"web_url":"http://patchwork.ozlabs.org/comment/3683460/","msgid":"<20260428133324.GD849557@ziepe.ca>","list_archive_url":null,"date":"2026-04-28T13:33:24","subject":"Re: [RFC PATCH 02/11] iommu/riscv: report iommu capabilities","submitter":{"id":73018,"url":"http://patchwork.ozlabs.org/api/people/73018/","name":"Jason Gunthorpe","email":"jgg@ziepe.ca"},"content":"On Tue, Apr 28, 2026 at 09:13:50PM +0800, fangyu.yu@linux.alibaba.com wrote:\n\n> +static bool riscv_iommu_capable(struct device *dev, enum iommu_cap cap)\n> +{\n> +\tswitch (cap) {\n> +\tcase IOMMU_CAP_CACHE_COHERENCY:\n> +\tcase IOMMU_CAP_DEFERRED_FLUSH:\n\nIOMMU_CAP_DEFERRED_FLUSH is not needed in v7.1\n\nJason","headers":{"Return-Path":"\n ","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n secure) header.d=lists.infradead.org header.i=@lists.infradead.org\n header.a=rsa-sha256 header.s=bombadil.20210309 header.b=GZqCEDlC;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n secure) header.d=ziepe.ca header.i=@ziepe.ca header.a=rsa-sha256\n header.s=google header.b=UKfl+mkX;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=none (no SPF record) smtp.mailfrom=lists.infradead.org\n (client-ip=2607:7c80:54:3::133; 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The original\n message has been attached to this so you can view it or label\n similar future email. If you have any questions, see\n the administrator of that system for details.\n Content preview: On Tue, Apr 28, 2026 at 09:13:50PM +0800,\n fangyu.yu@linux.alibaba.com\n wrote: > +static bool riscv_iommu_capable(struct device *dev,\n enum iommu_cap\n cap) > +{ > + switch (cap) { > + case IOMMU_CAP_CACHE_COHERENCY: > + case\n IOMMU_CAP_DEFERRED_FLUSH:\n Content analysis details: (-2.1 points, 5.0 required)\n pts rule name description\n ---- ----------------------\n --------------------------------------------------\n -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no\n trust\n [2607:f8b0:4864:20:0:0:0:a32 listed in]\n [list.dnswl.org]\n 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record\n -0.0 SPF_PASS SPF: sender matches SPF record\n -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from\n envelope-from domain\n 0.1 DKIM_SIGNED Message has a DKIM or DK signature,\n not necessarily valid\n -0.1 DKIM_VALID Message has at least one valid DKIM or DK\n signature\n -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from\n author's\n domain\n -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1%\n [score: 0.0000]","X-BeenThere":"kvm-riscv@lists.infradead.org","X-Mailman-Version":"2.1.34","Precedence":"list","List-Id":"","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Content-Type":"text/plain; charset=\"us-ascii\"","Content-Transfer-Encoding":"7bit","Sender":"\"kvm-riscv\" ","Errors-To":"kvm-riscv-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org"}},{"id":3683764,"web_url":"http://patchwork.ozlabs.org/comment/3683764/","msgid":"<20260429011520.62812-1-fangyu.yu@linux.alibaba.com>","list_archive_url":null,"date":"2026-04-29T01:15:20","subject":"Re: Re: [RFC PATCH 02/11] iommu/riscv: report iommu capabilities ","submitter":{"id":91416,"url":"http://patchwork.ozlabs.org/api/people/91416/","name":null,"email":"fangyu.yu@linux.alibaba.com"},"content":">> +static bool riscv_iommu_capable(struct device *dev, enum iommu_cap cap)\n>> +{\n>> +\tswitch (cap) {\n>> +\tcase IOMMU_CAP_CACHE_COHERENCY:\n>> +\tcase IOMMU_CAP_DEFERRED_FLUSH:\n>\n>IOMMU_CAP_DEFERRED_FLUSH is not needed in v7.1\n\nThanks, I will drop IOMMU_CAP_DEFERRED_FLUSH.\n\n>\n>Jason","headers":{"Return-Path":"\n ","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n secure) header.d=lists.infradead.org header.i=@lists.infradead.org\n header.a=rsa-sha256 header.s=bombadil.20210309 header.b=zx5GomqY;\n\tdkim=fail reason=\"signature verification failed\" (1024-bit key;\n unprotected) header.d=linux.alibaba.com header.i=@linux.alibaba.com\n header.a=rsa-sha256 header.s=default header.b=d7AdNmsL;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=none (no SPF record) smtp.mailfrom=lists.infradead.org\n (client-ip=2607:7c80:54:3::133; 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The original\n message has been attached to this so you can view it or label\n similar future email. If you have any questions, see\n the administrator of that system for details.\n Content preview: >> +static bool riscv_iommu_capable(struct device *dev,\n enum\n iommu_cap cap) >> +{ >> + switch (cap) { >> + case\n IOMMU_CAP_CACHE_COHERENCY:\n >> + case IOMMU_CAP_DEFERRED_FLUSH: > >IOMMU_CAP_DEFERRED_FLU [...]\n Content analysis details: (-17.6 points, 5.0 required)\n pts rule name description\n ---- ----------------------\n --------------------------------------------------\n -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no\n trust\n [115.124.30.97 listed in list.dnswl.org]\n -7.5 USER_IN_DEF_SPF_WL From: address is in the default SPF welcome-list\n 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record\n -0.0 SPF_PASS SPF: sender matches SPF record\n -7.5 USER_IN_DEF_DKIM_WL From: address is in the default DKIM welcome-list\n -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from\n envelope-from domain\n 0.1 DKIM_SIGNED Message has a DKIM or DK signature,\n not necessarily valid\n -0.1 DKIM_VALID Message has at least one valid DKIM or DK\n signature\n -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from\n author's\n domain\n -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1%\n [score: 0.0000]\n -0.5 ENV_AND_HDR_SPF_MATCH Env and Hdr From used in default SPF WL Match\n 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay\n lines","X-BeenThere":"kvm-riscv@lists.infradead.org","X-Mailman-Version":"2.1.34","Precedence":"list","List-Id":"","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Content-Type":"text/plain; charset=\"us-ascii\"","Content-Transfer-Encoding":"7bit","Sender":"\"kvm-riscv\" ","Errors-To":"kvm-riscv-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org"}}]