From: Sarah Newman <srn@prgmr.com>
To: David Vrabel <david.vrabel@citrix.com>,
"xen-devel@lists.xen.org" <xen-devel@lists.xen.org>
Subject: Re: Status of "dma, x86, xen: reduce SWIOTLB usage in Xen guests" series
Date: Wed, 27 Jan 2016 14:20:04 -0800 [thread overview]
Message-ID: <56A94294.2020601@prgmr.com> (raw)
In-Reply-To: <56A5FD36.5030903@citrix.com>
On 01/25/2016 02:47 AM, David Vrabel wrote:
> On 23/01/16 22:12, Sarah Newman wrote:
>> Greetings,
>>
>> We are having problems related to mptsas and "swiotlb buffer is full" with the Xen4CentOS kernel (3.18). It looks like the last related work was
>> the series http://lists.xenproject.org/archives/html/xen-devel/2014-12/msg00770.html back at the end of 2014 and I'm wondering if there are any plans
>> to revive the series.
> As a workaround, you can give dom0 more than 4 GiB and then the driver
> will set a 64-bit DMA mask. I don't think the memory needs to populated
> so something like dom0_mem=2GiB,max:4GiB might work.
4GiB RAM worked, though we may need to shuffle things around to put this into effect everywhere. Thanks.
prev parent reply other threads:[~2016-01-27 22:20 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-23 22:12 Status of "dma, x86, xen: reduce SWIOTLB usage in Xen guests" series Sarah Newman
2016-01-25 10:47 ` David Vrabel
2016-01-27 22:20 ` Sarah Newman [this message]
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