linux-kernel - Re: [PATCH] msi: Immediately mask and unmask msi-x irqs.

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Message-ID: <20070403205725.GD15704@linux-os.sc.intel.com>
Date:	Tue, 3 Apr 2007 13:57:25 -0700
From:	"Siddha, Suresh B" <suresh.b.siddha@...el.com>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
Cc:	"Siddha, Suresh B" <suresh.b.siddha@...el.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Greg KH <gregkh@...e.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-pci@...ey.karlin.mff.cuni.cz, linux-kernel@...r.kernel.org,
	"Kok, Auke-jan H" <auke-jan.h.kok@...el.com>,
	"Williams, Mitch A" <mitch.a.williams@...el.com>
Subject: Re: [PATCH] msi: Immediately mask and unmask msi-x irqs.

On Tue, Apr 03, 2007 at 01:39:43PM -0600, Eric W. Biederman wrote:
> "Siddha, Suresh B" <suresh.b.siddha@...el.com> writes:
> 
> Further now that we cache the msi message that read_msi_msg should go
> away and we should use the cached version from the msi_desc.

Ok. Then this patch is a must.

> > Don't we need the flush for the PCI_CAP_ID_MSI case aswell.
> 
> At least the 3.0 pci spec does not allow pci configuration access to
> be posted.  So unless we find some hardware that actually does post
> pci configuration writes we should be ok.

ok. Thanks.
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