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Message-ID: <5d6222a80708081731y4e20e0a4oedc27e0766283b6a@mail.gmail.com> Date: Wed, 8 Aug 2007 21:31:17 -0300 From: "Glauber de Oliveira Costa" <glommer@...il.com> To: "Nakajima, Jun" <jun.nakajima@...el.com> Cc: "Glauber de Oliveira Costa" <gcosta@...hat.com>, linux-kernel@...r.kernel.org, lguest@...abs.org, virtualization@...ts.linux-foundation.org, chrisw@...s-sol.org, anthony@...emonkey.ws, akpm@...ux-foundation.org, mingo@...e.hu Subject: Re: Introducing paravirt_ops for x86_64 On 8/8/07, Nakajima, Jun <jun.nakajima@...el.com> wrote: > > So, unless I'm very wrong, it only makes sense to talk about not > > supporting large pages in the guest level. But it is not a > > paravirt_ops problem. > > Some MMU-related PV techiniques (including Xen, and direct paging mode > for Xen/KVM) need to write-protect page tables, avoiding to use 2MB > pages when mapping page tables. Looks like you did not, and that > exaplains why the patches are missing the relevant (many) paravirt_ops > in include/asm-x86_64/pgalloc.h, for example, compared with the i386 > tree. I see. I'll address this in the next version of the patch. -- Glauber de Oliveira Costa. "Free as in Freedom" http://glommer.net "The less confident you are, the more serious you have to act." - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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