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Subject[PATCH] Alpha - cpu mask fix-ups broke SMP DP264 machines in 2.6.8
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The cpu mask fix-ups in 2.6.8 broke SMP kernels booting on a DP264. 
Instead of not setting the DIM for cpus that did not exit, the patch
inadvertently doesn't set the DIM for CPUs that do exist. Thus no
device interrupts get to the cpu.

Thanks,

Ali


--- linux-2.6.8.1.orig/arch/alpha/kernel/sys_dp264.c 2004-10-08
15:51:26.000000000 -0400
+++ linux-2.6.8.1.fix/arch/alpha/kernel/sys_dp264.c 2004-10-08
15:58:07.000000000 -0400
@@ -71,10 +71,10 @@
dim1 = &cchip->dim1.csr;
dim2 = &cchip->dim2.csr;
dim3 = &cchip->dim3.csr;
- if (cpu_possible(0)) dim0 = &dummy;
- if (cpu_possible(1)) dim1 = &dummy;
- if (cpu_possible(2)) dim2 = &dummy;
- if (cpu_possible(3)) dim3 = &dummy;
+ if (!cpu_possible(0)) dim0 = &dummy;
+ if (!cpu_possible(1)) dim1 = &dummy;
+ if (!cpu_possible(2)) dim2 = &dummy;
+ if (!cpu_possible(3)) dim3 = &dummy;

*dim0 = mask0;
*dim1 = mask1;
-
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