linux-kernel - Re: [PATCH] quiet down swiotlb warnings

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Message-ID: <466075D1.8080807@redhat.com>
Date:	Fri, 01 Jun 2007 15:38:57 -0400
From:	Rik van Riel <riel@...hat.com>
To:	Andi Kleen <andi@...stfloor.org>
CC:	Christoph Hellwig <hch@...radead.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	andrew.vasquez@...gic.com
Subject: Re: [PATCH] quiet down swiotlb warnings

Andi Kleen wrote:

> An pci_map_sg failing typically leads to an IO error and we've
> always printk'ed those. Otherwise people will wonder why they
> get EIO.

In some situations.  In this case the qla2xxx driver uses
the pci_map_sg() failure as a throttling mechanism and
printing out all the warnings will actually slow down the
system.

Andi, what do you propose as a solution?

-- 
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