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From: Bjorn Helgaas <helgaas@kernel.org>
To: Rajat Jain <rajatja@google.com>
Cc: David Woodhouse <dwmw2@infradead.org>,
	Lu Baolu <baolu.lu@linux.intel.com>,
	Joerg Roedel <joro@8bytes.org>,
	Bjorn Helgaas <bhelgaas@google.com>,
	"Rafael J. Wysocki" <rjw@rjwysocki.net>,
	Len Brown <lenb@kernel.org>,
	iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org,
	linux-pci@vger.kernel.org, linux-acpi@vger.kernel.org,
	Raj Ashok <ashok.raj@intel.com>,
	lalithambika.krishnakumar@intel.com,
	Mika Westerberg <mika.westerberg@linux.intel.com>,
	Jean-Philippe Brucker <jean-philippe@linaro.org>,
	Prashant Malani <pmalani@google.com>,
	Benson Leung <bleung@google.com>, Todd Broch <tbroch@google.com>,
	Alex Levin <levinale@google.com>,
	Mattias Nissler <mnissler@google.com>,
	Rajat Jain <rajatxjain@gmail.com>,
	Bernie Keany <bernie.keany@intel.com>,
	Aaron Durbin <adurbin@google.com>,
	Diego Rivas <diegorivas@google.com>,
	Duncan Laurie <dlaurie@google.com>,
	Furquan Shaikh <furquan@google.com>,
	Jesse Barnes <jsbarnes@google.com>,
	Christian Kellner <christian@kellner.me>,
	Alex Williamson <alex.williamson@redhat.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	oohall@gmail.com, Saravana Kannan <saravanak@google.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	Arnd Bergmann <arnd@arndb.de>,
	Heikki Krogerus <heikki.krogerus@linux.intel.com>
Subject: Re: [PATCH v2 1/7] PCI: Keep the ACS capability offset in device
Date: Mon, 6 Jul 2020 10:58:15 -0500
Message-ID: <20200706155815.GA119406@bjorn-Precision-5520> (raw)
In-Reply-To: <20200630044943.3425049-2-rajatja@google.com>

On Mon, Jun 29, 2020 at 09:49:37PM -0700, Rajat Jain wrote:
> Currently this is being looked up at a number of places. Read and store it
> once at bootup so that it can be used by all later.

Write the commit log so it is complete even without the subject.
Right now, you have to read the subject to know what "this" refers to.

The subject is like the title; the log is like the body of an article.
The title isn't *part* of the article, so the article has to make
sense all by itself.

> +static void pci_enable_acs(struct pci_dev *dev);

I don't think we need this forward declaration, do we?

> @@ -4653,7 +4653,7 @@ static int pci_quirk_intel_spt_pch_acs(struct pci_dev *dev, u16 acs_flags)
>  	if (!pci_quirk_intel_spt_pch_acs_match(dev))
>  		return -ENOTTY;
>  
> -	pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ACS);
> +	pos = dev->acs_cap;

I assume you verified that all these quirks are FINAL quirks, since
pci_init_capabilities() is called after HEADER quirks.  I'll
double-check before applying this.

Bjorn

  reply index

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-30  4:49 [PATCH v2 0/7] Tighten PCI security, expose dev location in sysfs Rajat Jain
2020-06-30  4:49 ` [PATCH v2 1/7] PCI: Keep the ACS capability offset in device Rajat Jain
2020-07-06 15:58   ` Bjorn Helgaas [this message]
2020-07-06 22:16     ` Rajat Jain
2020-07-06 23:18       ` Bjorn Helgaas
2020-06-30  4:49 ` [PATCH v2 2/7] PCI: Set "untrusted" flag for truly external devices only Rajat Jain
2020-06-30  7:38   ` Lu Baolu
2020-06-30  7:55   ` Greg Kroah-Hartman
2020-07-06 16:41     ` Bjorn Helgaas
2020-07-06 18:48       ` Greg Kroah-Hartman
2020-07-06 16:38   ` Bjorn Helgaas
2020-07-06 22:31     ` Rajat Jain
2020-07-06 23:30       ` Bjorn Helgaas
2020-07-06 23:40         ` Rajat Jain
2020-06-30  4:49 ` [PATCH v2 3/7] PCI/ACS: Enable PCI_ACS_TB for untrusted/external-facing devices Rajat Jain
2020-07-06 16:45   ` Bjorn Helgaas
2020-07-06 23:12     ` Rajat Jain
2020-07-06 17:07   ` Bjorn Helgaas
2020-07-06 23:19     ` Rajat Jain
2020-06-30  4:49 ` [PATCH v2 4/7] PCI: Add device even if driver attach failed Rajat Jain
2020-06-30  8:02   ` Greg Kroah-Hartman
2020-07-06 23:35     ` Rajat Jain
2020-06-30  4:49 ` [PATCH v2 5/7] driver core: Add device location to "struct device" and expose it in sysfs Rajat Jain
2020-06-30  8:01   ` Greg Kroah-Hartman
2020-06-30 10:49   ` Heikki Krogerus
2020-06-30 12:52     ` Greg Kroah-Hartman
2020-06-30 13:00       ` Rafael J. Wysocki
2020-06-30 15:38         ` Greg Kroah-Hartman
2020-06-30 16:08           ` Rafael J. Wysocki
2020-06-30 17:00             ` Greg Kroah-Hartman
2020-07-01 18:06               ` Rajat Jain
2020-07-02  5:23                 ` Oliver O'Halloran
2020-07-02  7:32                   ` Greg Kroah-Hartman
2020-07-02  8:40                     ` Oliver O'Halloran
2020-07-02  8:52                       ` Greg Kroah-Hartman
2020-07-02  8:53                         ` Greg Kroah-Hartman
2020-07-07  6:03                   ` Rajat Jain
2020-06-30 17:43   ` Saravana Kannan
2020-06-30  4:49 ` [PATCH v2 6/7] PCI: Move pci_dev->untrusted logic to use device location instead Rajat Jain
2020-06-30  7:39   ` Lu Baolu
2020-06-30  4:49 ` [PATCH v2 7/7] PCI: Add parameter to disable attaching external devices Rajat Jain
2020-07-04 11:44 ` [PATCH v2 0/7] Tighten PCI security, expose dev location in sysfs Pavel Machek
2020-07-06 22:18   ` Rajat Jain

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