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

[Tim Deegan <tim@xxxxxxx>]

At 10:08 +0800 on 03 Aug (1312366080), Ren, Yongjie wrote:
> Hi Tim,
> Any comment on this issue ?
> It seems that cs# 23247 introduced this issue.

Hi, 

Allen points out that the EPT capability variable that is checked
doesn't get initialized until VMX is set up, which right now happens
_after_ the IOMMU is configured.

Allen, is there any reason that the call to iommu_enable() shouldn't be
moved to after do_presmp_initcalls()?  If so, then I guess we should
open-code the hardware capability check in the vtD init code. 

Tim.

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

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