RE: [Xen-ia64-devel] [PATCH] [Resend]Enable hash vtlb

["Xu, Anthony" <anthony.xu@xxxxxxxxx>]

>From: Tristan Gingold [mailto:Tristan.Gingold@xxxxxxxx]
>Sent: 2006年4月12日 15:53
>To: Xu, Anthony; xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
>Subject: Re: [Xen-ia64-devel] [PATCH] [Resend]Enable hash vtlb
>
>Le Vendredi 07 Avril 2006 21:02, Xu, Anthony a écrit :
>> Hash vTLB is intended to address SMP scalability for large system.
>If I understand correctly, the Hash vTLB patch doesn't handle itc whose ps >
>rr.ps (there is a panic here).
Correct, Hash vTLB doesn't handle multiple page sizes on the same region.
Linux doesn't use multiple page sizes on the same region.
Linux uses region 4 to handle hugetlb like 256M, rr4.ps is set to 256M.
>
>After a few minutes of thinking, I don't see how this could be done.
>Any hint ?
Break this huge tlb into several small tlbs whose page size is equal to rr.ps.

Thanks,
Anthony



>
>Tristan.

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