From: "H. Peter Anvin" <hpa@zytor.com>
To: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>,
Yinghai Lu <yhlu.kernel@gmail.com>,
Alan Cox <alan@lxorguk.ukuu.org.uk>,
Jesse Barnes <jbarnes@virtuousgeek.org>,
Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org,
Andrew Vasquez <andrew.vasquez@qlogic.com>
Subject: Re: [PATCH] pci: change msi-x vector to 32bit
Date: Mon, 18 Aug 2008 14:24:41 -0700 [thread overview]
Message-ID: <48A9E899.8000303@zytor.com> (raw)
In-Reply-To: <m14p5i2iwx.fsf@frodo.ebiederm.org>
Eric W. Biederman wrote:
>
> I believe assign_irq_vector on x86_64 and soon on x86_32 does this already.
>
> The number that was being changed was the irq number of for the
> msi-x ``vectors'' from some random free irq number to roughly
> bus(8 bits):device+function(8 bits):msix-vector(12 bits) so that we
> could have a stable irq number for msi irqs.
>
> Once pci domain is considered it is hard to claim we have enough bits.
> I expect we need at least pci domains to have one per NUMA node, in
> the general case.
>
[...]
>
> So once we have all of that. It becomes possible to look at assigning a static
> irq number to each pci (bus:device:function:msi-x vector) pair so the system
> is more reproducible.
>
Domain, again?
-hpa
next prev parent reply other threads:[~2008-08-18 21:25 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-16 3:26 [PATCH] pci: change msi-x vector to 32bit H. Peter Anvin
2008-08-16 6:42 ` Yinghai Lu
2008-08-16 14:50 ` James Bottomley
2008-08-16 15:39 ` Alan Cox
2008-08-16 16:13 ` James Bottomley
2008-08-16 18:56 ` Yinghai Lu
2008-08-16 20:10 ` Andrew Vasquez
2008-08-16 20:25 ` James Bottomley
2008-08-16 20:34 ` Yinghai Lu
2008-08-16 20:45 ` James Bottomley
2008-08-16 22:17 ` Yinghai Lu
2008-08-16 23:09 ` James Bottomley
2008-08-16 23:21 ` Yinghai Lu
2008-08-18 19:59 ` Eric W. Biederman
2008-08-18 20:59 ` James Bottomley
2008-08-18 21:45 ` Eric W. Biederman
2008-08-18 22:04 ` James Bottomley
2008-08-18 21:51 ` Alan Cox
2008-08-18 22:13 ` H. Peter Anvin
2008-08-18 22:27 ` James Bottomley
2008-08-18 21:24 ` H. Peter Anvin [this message]
2008-08-16 8:17 ` Eric W. Biederman
2008-08-16 9:00 ` Yinghai Lu
-- strict thread matches above, loose matches on Subject: below --
2008-08-16 2:36 Yinghai Lu
2008-08-21 20:33 ` Jesse Barnes
2008-08-21 20:47 ` Eric W. Biederman
2008-08-21 23:07 ` Jesse Barnes
2008-08-22 0:11 ` Eric W. Biederman
2008-08-22 0:35 ` Jesse Barnes
2008-08-27 23:34 ` Jesse Barnes
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=48A9E899.8000303@zytor.com \
--to=hpa@zytor.com \
--cc=James.Bottomley@HansenPartnership.com \
--cc=akpm@linux-foundation.org \
--cc=alan@lxorguk.ukuu.org.uk \
--cc=andrew.vasquez@qlogic.com \
--cc=ebiederm@xmission.com \
--cc=jbarnes@virtuousgeek.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=tglx@linutronix.de \
--cc=yhlu.kernel@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.