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From: David Vrabel <david.vrabel@citrix.com>
To: Ian Campbell <Ian.Campbell@citrix.com>
Cc: Boris.Ostrovsky@oracle.com, xen-devel@lists.xensource.com,
	"xen.org" <Ian.Jackson@eu.citrix.com>
Subject: Re: [linux-linus test] 25478: regressions - FAIL
Date: Tue, 18 Mar 2014 11:25:25 +0000	[thread overview]
Message-ID: <53282D25.10203@citrix.com> (raw)
In-Reply-To: <1395141039.12847.42.camel@kazak.uk.xensource.com>

On 18/03/14 11:10, Ian Campbell wrote:
> 
> There are 64-bit bars but they don't have addresses >4G so I think they
> don't count.

If a device only has 32-bit BARs it's generally not capable of handling
64-bit DMA addresses and we can point and laugh at the card.

mptsas is a driver that uses dma_get_required_mask() to determine a
"suitable" DMA mask -- but under Xen dma_get_required_mask() may return
the wrong mask since it only gets the physical RAM range and not machine
addresses.

David

  reply	other threads:[~2014-03-18 11:25 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-03-14 16:42 [linux-linus test] 25478: regressions - FAIL xen.org
2014-03-14 17:07 ` Ian Campbell
2014-03-14 18:23   ` Konrad Rzeszutek Wilk
2014-03-17 11:08     ` Ian Campbell
2014-03-17 19:36       ` Konrad Rzeszutek Wilk
2014-03-18  9:28         ` Ian Campbell
2014-03-18  9:43           ` Ian Campbell
2014-03-18  9:29         ` Ian Campbell
2014-03-18 10:55           ` David Vrabel
2014-03-18 11:04             ` Ian Campbell
2014-03-18 11:10               ` Ian Campbell
2014-03-18 11:25                 ` David Vrabel [this message]
2014-03-18 11:29                   ` Ian Campbell
     [not found]                     ` <53283118.5050706@citrix.com>
     [not found]                       ` <1395143026.12847.47.camel@kazak.uk.xensource.com>
2014-03-27 18:00                         ` [linux-linus test] 25677: " xen.org
2014-04-10 15:37                           ` [linux-linus test] 25478: regressions - FAIL [and 1 more messages] Ian Jackson
2014-04-16 10:12                             ` Ian Jackson
2014-04-16 10:53                               ` David Vrabel
2014-04-16 11:47                                 ` Ian Jackson
2014-04-16 13:48                                   ` David Vrabel
2014-03-17 12:01   ` [linux-linus test] 25478: regressions - FAIL David Vrabel
2014-03-17 12:23     ` Ian Campbell
2014-03-17 19:38     ` Konrad Rzeszutek Wilk

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