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[Xen-devel] Re: [PATCH 00 of 36] x86/paravirt: groundwork for 64-bit Xen
| To: | Jeremy Fitzhardinge <jeremy@xxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] Re: [PATCH 00 of 36] x86/paravirt: groundwork for 64-bit Xen support |
| From: | Andi Kleen <andi@xxxxxxxxxxxxxx> |
| Date: | Wed, 25 Jun 2008 14:40:20 +0200 |
| Cc: | Mark McLoughlin <markmc@xxxxxxxxxx>, xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Eduardo Habkost <ehabkost@xxxxxxxxxx>, LKML <linux-kernel@xxxxxxxxxxxxxxx>, Stephen Tweedie <sct@xxxxxxxxxx> |
| Delivery-date: | Wed, 25 Jun 2008 10:03:14 -0700 |
| Envelope-to: | www-data@xxxxxxxxxxxxxxxxxx |
| In-reply-to: | <patchbomb.1214367536@localhost> (Jeremy Fitzhardinge's message of "Wed, 25 Jun 2008 00:18:56 -0400") |
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Jeremy Fitzhardinge <jeremy@xxxxxxxx> writes: > > This moves __PAGE_OFFSET up by 16 GDT slots, from 0xffff810000000000 GDT? PDP? > to 0xffff880000000000. I have no general justification for this: th This will significantly decrease the maximum amount of physical memory supported by Linux longer term. > "x86_64: PSE no longer a hard requirement." > > Because booting under Xen doesn't set PSE, it's no longer a hard > requirement for the kernel. PSE will be used whereever possible. Both sound like cases of "let's hack Linux to work around Xen problems" -Andi _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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