[{"id":3674154,"web_url":"http://patchwork.ozlabs.org/comment/3674154/","msgid":"<61126291e21010eb79bc0a8d02cbf5d30e0c7b8f.camel@linux.ibm.com>","list_archive_url":null,"date":"2026-04-07T12:28:02","subject":"Re: [PATCH v7 1/2] docs: s390/pci: Improve and update PCI\n documentation","submitter":{"id":85804,"url":"http://patchwork.ozlabs.org/api/people/85804/","name":"Gerd Bayer","email":"gbayer@linux.ibm.com"},"content":"On Tue, 2026-04-07 at 12:12 +0200, Niklas Schnelle wrote:\n\n\n[... snip ...]\n\n> Similarly add documentation for the fidparm attribute added by commit\n> 99ad39306a62 (\"s390/pci: Expose FIDPARM attribute in sysfs\") and\n> add a list of pft values and their names.\n> \n\n[... snip ...]\n\n> ---\n> Documentation/arch/s390/pci.rst | 144 +++++++++++++++++++++++++++-------------\n> 1 file changed, 97 insertions(+), 47 deletions(-)\n> \n> diff --git a/Documentation/arch/s390/pci.rst b/Documentation/arch/s390/pci.rst\n> index d5755484d8e75c7bf67a350e61bbe04f0452a2fa..8cb0a1e784a7cfc5df1e04a4154ba02c9ecf46cc 100644\n> --- a/Documentation/arch/s390/pci.rst\n> +++ b/Documentation/arch/s390/pci.rst\n> @@ -6,6 +6,7 @@ S/390 PCI\n> \n> Authors:\n> - Pierre Morel\n> + - Niklas Schnelle\n> \n> Copyright, IBM Corp. 2020\n> \n> @@ -27,14 +28,16 @@ Command line parameters\n> debugfs entries\n> ---------------\n> \n> -The S/390 debug feature (s390dbf) generates views to hold various debug results in sysfs directories of the form:\n> +The S/390 debug feature (s390dbf) generates views to hold various debug results\n> +in sysfs directories of the form:\n> \n> * /sys/kernel/debug/s390dbf/pci_*/\n> \n> For example:\n> \n> - /sys/kernel/debug/s390dbf/pci_msg/sprintf\n> - Holds messages from the processing of PCI events, like machine check handling\n> +\n> + holds messages from the processing of PCI events, like machine check handling\n> and setting of global functionality, like UID checking.\n> \n> Change the level of logging to be more or less verbose by piping\n> @@ -47,87 +50,134 @@ Sysfs entries\n> \n\n[... snip ...]\n\n> +\n> +* /sys/firmware/clp/uid_is_unique:\n\nAs much as I had loved the attribute to be named as such, or even\nbetter /sys/firmware/clp/uids_are_unique, I find commit b043a81ce3ee\n(\"s390/pci: Expose firmware provided UID Checking state in sysfs\") has\nintroduced\n\n/sys/firmware/clp/uid_checking.\n\nSorry, that this did slip me...\n\nGerd","headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-pci@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256\n header.s=pp1 header.b=LqDvnMly;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c0a:e001:db::12fc:5321; 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