WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

Re: [Xen-devel] pvops: AHCI problems with SB600

To: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Subject: Re: [Xen-devel] pvops: AHCI problems with SB600
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Date: Wed, 23 Sep 2009 13:30:44 -0700
Cc: Patrick Scharrenberg <pittipatti@xxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
Delivery-date: Wed, 23 Sep 2009 13:32:12 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <4ABA8088.1080807@xxxxxxxx>
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
References: <4AB431AD.1030205@xxxxxxxx> <4AB4EEB8.7050107@xxxxxx> <20090921150634.GD20933@xxxxxxxxxxxxxxxxxxx> <4AB89227.8050302@xxxxxx> <20090922140825.GB21736@xxxxxxxxxxxxxxxxxxx> <20090923120646.GA3199@xxxxxxxxxxxxxxxxxxx> <4ABA7578.8030201@xxxxxxxx> <20090923193245.GA5682@xxxxxxxxxxxxxxxxxxx> <4ABA8088.1080807@xxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.1) Gecko/20090814 Fedora/3.0-2.6.b3.fc11 Lightning/1.0pre Thunderbird/3.0b3
On 09/23/09 13:09, Jeremy Fitzhardinge wrote:
>               if (!no_iommu &&
>                   max_pfn > MAX_DMA32_PFN &&
>                   !printed_gart_size_msg) {
>                       printk(KERN_ERR "you are using iommu with agp, but GART 
> size is less than 64M\n");
>                       printk(KERN_ERR "please increase GART size in your BIOS 
> setup\n");
>                       printk(KERN_ERR "if BIOS doesn't have that option, 
> contact your HW vendor!\n");
>                       printed_gart_size_msg = 1;
>               }
>   

Oh, that's the wrong error message, but the other one has similar
predicates.  Hm, but it also skips the test if (swiotlb && !valid_agp)...

> I guess the "!no_iommu" clause is triggering because we have swiotlb
> set, but I wonder if that's specifically testing for the presence of a
> GART IOMMU?
>
> How does ioremap_nocache fit into this?  Is the mapping failing in some
> way and causing this code to fail?  Or am I misunderstanding?
>
>   
>> This is exhibited only when dom0 has more than 4GB, so if you do 
>> dom_mem=max:4GB
>> the machine boots succesfully.
>>   
>>     
> The test above also tests "max_pfn > MAX_DMA32_PFN" which limiting
> memory would avoid.
>   

    J

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel

<Prev in Thread] Current Thread [Next in Thread>