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RE: [Xen-devel] [bug] 'VT-d 1G super page' feature is blocked


This patch at least fixed the dom0 boot issue on my jaketown system when 
sharept is used.  I'm still having some issue in the guest which might not be 
sharept related.  I need to verify it further tomorrow as I need to leave early 

When you get a chance, can you also make a similar patch for xen-4.1-testing?  
Jan need it for backporting to SLES11.


-----Original Message-----
From: Tim Deegan [mailto:tim@xxxxxxx] 
Sent: Tuesday, August 16, 2011 2:13 AM
To: Kay, Allen M
Cc: Ren, Yongjie; Xen Devel; Jan Beulich; Li, Xin
Subject: Re: [Xen-devel] [bug] 'VT-d 1G super page' feature is blocked

At 15:37 -0700 on 15 Aug (1313422621), Kay, Allen M wrote:
> > #define iommu_use_hap_pt(d) (paging_mode_translate(d) && 
> > iommu_hap_pt_share)
> Tim, should the code be checking for paging_mode_hap(d) instead to 
> make sure HAP page table is used?

Ah, yes it should; thanks for spotting that.  For AMD _external() is sufficient 
but not for VtD.  Updated version attached. 



Tim Deegan <tim@xxxxxxx>
Principal Software Engineer, Xen Platform Team Citrix Systems UK Ltd.  (Company 
#02937203, SL9 0BG)

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