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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 <vgoyal@in.ibm.com> >>> --- >> [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 > - > 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/ > - 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/ | ||||||||||||
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