>From: Tristan Gingold >Sent: 2006年4月12日 16:38 >To: Xu, Anthony; xen-ia64-devel@lists.xensource.com >Subject: Re: [Xen-ia64-devel] [PATCH] [Resend]Enable hash vtlb > >Le Mercredi 12 Avril 2006 10:01, Xu, Anthony a écrit : >> From: Tristan Gingold [mailto:[EMAIL PROTECTED] >> >> >Sent: 2006年4月12日 15:53 >> >To: Xu, Anthony; xen-ia64-devel@lists.xensource.com >> >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. >I am not sure this works. During insertion an entry can erase another entry >from the same itc. And if a fault occurs within the erased entry, there is >no forward progression! > I assume there are collision chains :-)
>Tristan. _______________________________________________ Xen-ia64-devel mailing list Xen-ia64-devel@lists.xensource.com http://lists.xensource.com/xen-ia64-devel
