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From: Christoph Hellwig <hch@lst.de>
To: Dan Williams <dan.j.williams@intel.com>
Cc: Christoph Hellwig <hch@lst.de>,
	Bjorn Helgaas <helgaas@kernel.org>,
	Jonathan Cameron <Jonathan.Cameron@huawei.com>,
	"Weiny, Ira" <ira.weiny@intel.com>,
	Alison Schofield <alison.schofield@intel.com>,
	Vishal Verma <vishal.l.verma@intel.com>,
	Ben Widawsky <ben.widawsky@intel.com>,
	Bjorn Helgaas <bhelgaas@google.com>,
	linux-cxl@vger.kernel.org, Linux PCI <linux-pci@vger.kernel.org>,
	Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH 3/5] cxl/pci: Add DOE Auxiliary Devices
Date: Tue, 30 Nov 2021 07:42:17 +0100	[thread overview]
Message-ID: <20211130064217.GA10312@lst.de> (raw)
In-Reply-To: <CAPcyv4gYBpx6Anw__gW-3xZfbcTaVv5eUR6wuxt_Ert1N6hDZA@mail.gmail.com>

On Mon, Nov 29, 2021 at 03:59:25PM -0800, Dan Williams wrote:
> DOE negotiates security features like SPDM and IDE. I think it is
> important for the kernel to be able to control access to DOE instances
> even though it has not cared about protecting itself from userspace
> initiated configuration writes in the past.

I think DOE is pretty much a kernel only feature and we can't allow
userspace access to it at all.

  reply	other threads:[~2021-11-30  6:42 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-05 23:50 [PATCH 0/5] CXL: Read CDAT and DSMAS data from the device ira.weiny
2021-11-05 23:50 ` [PATCH 1/5] PCI: Add vendor ID for the PCI SIG ira.weiny
2021-11-17 21:50   ` Bjorn Helgaas
2021-11-05 23:50 ` [PATCH 2/5] PCI/DOE: Add Data Object Exchange Aux Driver ira.weiny
2021-11-08 12:15   ` Jonathan Cameron
2021-11-10  5:45     ` Ira Weiny
2021-11-18 18:48       ` Jonathan Cameron
2021-11-16 23:48   ` Bjorn Helgaas
2021-12-03 20:48     ` Dan Williams
2021-12-03 23:56       ` Bjorn Helgaas
2021-12-04 15:47         ` Dan Williams
2021-12-06 12:27           ` Jonathan Cameron
2021-11-05 23:50 ` [PATCH 3/5] cxl/pci: Add DOE Auxiliary Devices ira.weiny
2021-11-08 13:09   ` Jonathan Cameron
2021-11-11  1:31     ` Ira Weiny
2021-11-11 11:53       ` Jonathan Cameron
2021-11-16 23:48   ` Bjorn Helgaas
2021-11-17 12:23     ` Jonathan Cameron
2021-11-17 22:15       ` Bjorn Helgaas
2021-11-18 10:51         ` Jonathan Cameron
2021-11-19  6:48         ` Christoph Hellwig
2021-11-29 23:37           ` Dan Williams
2021-11-29 23:59             ` Dan Williams
2021-11-30  6:42               ` Christoph Hellwig [this message]
2021-11-05 23:50 ` [PATCH 4/5] cxl/mem: Add CDAT table reading from DOE ira.weiny
2021-11-08 13:21   ` Jonathan Cameron
2021-11-08 23:19     ` Ira Weiny
2021-11-08 15:02   ` Jonathan Cameron
2021-11-08 22:25     ` Ira Weiny
2021-11-09 11:09       ` Jonathan Cameron
2021-11-19 14:40   ` Jonathan Cameron
2021-11-05 23:50 ` [PATCH 5/5] cxl/cdat: Parse out DSMAS data from CDAT table ira.weiny
2021-11-08 14:52   ` Jonathan Cameron
2021-11-11  3:58     ` Ira Weiny
2021-11-11 11:58       ` Jonathan Cameron
2021-11-18 17:02   ` Jonathan Cameron
2021-11-19 14:55   ` Jonathan Cameron

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