Messages in this thread | ![/](/images/icornerl.gif) | | Date | Fri, 08 Aug 2003 09:15:03 -0400 | From | Jeff Garzik <> | Subject | Re: [patch 2.4 1/2] backport 2.6 x86 cpu capabilities |
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Mikael Pettersson wrote: > On Thu, 7 Aug 2003 22:54:30 -0400, Jeff Garzik wrote: > >>(hopefully destined for 2.4.23-pre1) >> >># >># include/asm-i386/msr.h 1.8 -> 1.9 >># include/asm-i386/cpufeature.h 1.5 -> 1.6 >># arch/i386/kernel/setup.c 1.70 -> 1.71 >># > > ... > >>-#define NCAPINTS 4 /* Currently we have 4 32-bit words worth of info */ >>+#define NCAPINTS 6 /* Currently we have 6 32-bit words worth of info */ > > > If you change NCAPINTS you also have to change the hardcoded > struct offset X86_VENDOR_ID in arch/i386/kernel/head.S. Otherwise > nasty stuff happen at boot since boot_cpu_data gets broken.
hmmm, reality doesn't seem to bear that out... I made the same change to 2.6, without touching head.S, and life continues without "nasty stuff" AFAICS.
Do both 2.4 and 2.6 need this change? And, why didn't 2.6 break?
Jeff
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