lkml.org 
[lkml]   [2007]   [Feb]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [patch 05/21] Xen-paravirt: paravirt_ops: allocate a fixmap slot
Dan Hecht wrote:
> Right. But that is only because Xen decides to allocate the page from
> the (machine) physical space, rather than from the pseudo-physical
> space. My question is: why doesn't Xen allocate shared_info from the
> pseudo-physical space?

Historical reasons ...

> If it had, then this page wouldn't need to be
> treated specially. I'm not sure, but I seem to remember on 64-bit
> Xen/XenLinux allocated shared_info from pseudo-physical space already...

Yep, the ia64 port which came later handles some things differently,
specifically some "magic" pages are allocated more clever ;)

Changing that for x86 would break existing guests though.

cheers,
Gerd

--
Gerd Hoffmann <kraxel@suse.de>
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2007-02-14 09:47    [W:0.069 / U:0.072 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site