linux-kernel - Re: [PATCH] pci: More PRI/PASID cleanup

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Message-ID: <20111108175410.GH5182@amd.com>
Date:	Tue, 8 Nov 2011 18:54:10 +0100
From:	"Roedel, Joerg" <Joerg.Roedel@....com>
To:	Alex Williamson <alex.williamson@...hat.com>
CC:	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"jbarnes@...tuousgeek.org" <jbarnes@...tuousgeek.org>,
	"bhelgaas@...gle.com" <bhelgaas@...gle.com>
Subject: Re: [PATCH] pci: More PRI/PASID cleanup

On Tue, Nov 08, 2011 at 10:31:58AM -0700, Alex Williamson wrote:
> On Tue, 2011-11-08 at 18:17 +0100, Roedel, Joerg wrote:
> > On Tue, Nov 08, 2011 at 09:44:30AM -0700, Alex Williamson wrote:
> > 
> > > bit 0 (PCI_PASID_ENABLE) is reserved in the CAP register...
> > 
> > Is it? Which spec are you using? In my version it is not reserved but
> > states if it is supported to set the enable-bit.
> 
> Latest I can find is the March 31, 2011 PASID ECN, which just lists that
> bit as reserved.

Okay, my one is older and there it is stated as I implemented it. I will
check with reality first before changing the code...

> I can drop it if need be, was just trying to do some cleanup on the
> consistency of pci_reg.h before adding a bunch more defines to help
> bounds checking and parsing for vfio-pci.  Unless my spec is outdated,
> it seems like there's more than an aesthetic change here though, so
> resolving the conflicts with your latest work might be warranted.

Fine with me. The best is probably when I carry this change forward
(when Jesse is ok with that) and put my changes on-top of that.

Thanks,

	Joerg

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