Vivek Goyal wrote:
On Tue, May 09, 2006 at 02:33:48PM -0500, Kumar Gala wrote:
On May 5, 2006, at 12:28 PM, Vivek Goyal wrote:
o Core changes for Kconfigurable memory and IO resources. By
default resources
are 64bit until chosen to be 32bit.
o Last time I posted the patches for 64bit memory resources but it
raised
the concerns regarding code bloat on 32bit systems who use 32 bit
resources.
o This patch-set allows resources to be kconfigurable.
o I have done cross compilation on i386, x86_64, ppc, powerpc,
sparc, sparc64
ia64 and alpha.
Signed-off-by: Vivek Goyal <[email protected]>
---
[snip]
I didn't think the bloat was a big issue based on the numbers you
reported. I'd still prefer to see us just move to a 64-bit resource
on all systems.
I had also thought that bloat was not a big issue but Andrew thinks
otherwise. Here is the link to the thread.
http://marc.theaimsgroup.com/?l=linux-kernel&m=114626907106986&w=2
http://marc.theaimsgroup.com/?l=linux-kernel&m=114635425606186&w=2
In the latest patches, 64bit resources are default but one can force
these to be 32bit.
This may sound like a dumb question, but aside from code bloat, what are
the performance issues involved in running 64-bit resources on 32-bit
systems? AKA, does it kill us x86 users to not have this switch, and by
what kind of margin? You can point if it's been said and I just haven't
found it; I didn't see performance discussion in the last submission.
Thanks!
Matt
Thanks
Vivek
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