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Re: [Xen-ia64-devel][PATCH] Enable SMP on VTI domain.

from [Isaku Yamahata]

[Permanent Link][Original]

To:	"Xu, Anthony" <anthony.xu@xxxxxxxxx>
Subject:	Re: [Xen-ia64-devel][PATCH] Enable SMP on VTI domain.
From:	Isaku Yamahata <yamahata@xxxxxxxxxxxxx>
Date:	Thu, 29 Jun 2006 19:35:54 +0900
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On Thu, Jun 29, 2006 at 05:42:27PM +0800, Xu, Anthony wrote:

> >- a race in vmx_process() of vmx_process.c
> >  The same race was there in ia64_do_page_fault() before.
> >  The check, (fault == IA64_USE_TLB && !current->arch.dtlb.pte.p), in
> >  ia64_do_page_fault() avoids this race.
> VTI-domain doesn't have this issue, which is introduced by 1-entry TLB

VT-i domain introduced v->arch.vtlb instead of 1-entry TLB.
Similar race can occur with v->arch.vtlb.

-- 
yamahata

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