Messages in this thread | | | Date | Tue, 18 Nov 2008 22:43:35 -0800 | From | Max Krasnyansky <> | Subject | Re: default IRQ affinity change in v2.6.27 (breaking several SMP PPC based systems) |
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David Miller wrote: > From: Kumar Gala <galak@kernel.crashing.org> > Date: Fri, 24 Oct 2008 10:39:05 -0500 > >> As for making it ARCH specific, that doesn't really help since not >> all PPC hw has the limitation I spoke of. Not even all MPIC (in our >> cases) have the limitation. > > Since the PPC code knows exactly which MPICs have the problem the > PPC code is where the constraining can occur. > > I agree completely with the suggestion that the arch code has to > interpret the cpumask as appropriate for the hardware, since the > user can stick "illegal" values there anyways.
Sorry for delay in replying to this. And sorry for causing regression on some ppc platforms. I totally agree with what Dave said above. ALL_CPUS is a sane default, platform code has to sanity check masks passed via set_affinity() calls anyway. So I beleive it should be fixed in the platform code.
Max
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