Messages in this thread Patch in this message | | | Date | Thu, 3 Mar 2005 16:55:42 -0600 | Subject | Re: [PATCH] trivial fix for 2.6.11 raid6 compilation on ppc w/ Altivec | From | (Olof Johansson) |
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On Fri, Mar 04, 2005 at 09:30:22AM +1100, Paul Mackerras wrote: > > I nominate this as a candidate for linux-2.6.11 release branch. :) > > No. Unfortunately if you fix ppc64 here you will break ppc, and vice > versa. Yes, we are going to reconcile the cur_cpu_spec definitions > between ppc and ppc64. :)
The proper fix is to get the cpu_has_feature patch merged up from -mm, but that's 99% cleanup and 1% bugfix. So here's a more appropriate fix for the 2.6.11 patch stream. This goes on top of the one that just got merged there.
-Olof
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Here's a patch that will work for both PPC and PPC64. The proper way to fix this in mainline is to merge -mm's cpu_has_feature patch, but for the stable 2.6.11-series, this much less intrusive (i.e. just the pure bugfix, not the cleanup part).
Signed-off-by: Olof Johansson <olof@austin.ibm.com>
Index: linux-2.5/drivers/md/raid6altivec.uc =================================================================== --- linux-2.5.orig/drivers/md/raid6altivec.uc 2005-03-03 16:46:47.000000000 -0600 +++ linux-2.5/drivers/md/raid6altivec.uc 2005-03-03 16:48:03.000000000 -0600 @@ -108,7 +108,11 @@ int raid6_have_altivec(void); int raid6_have_altivec(void) { /* This assumes either all CPUs have Altivec or none does */ +#ifdef CONFIG_PPC64 + return cur_cpu_spec->cpu_features & CPU_FTR_ALTIVEC; +#else return cur_cpu_spec[0]->cpu_features & CPU_FTR_ALTIVEC; +#endif } #endif - 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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