[patch 3/3] cell: prevent alignment interrupt on local store
segher at kernel.crashing.org
Tue Apr 10 22:52:33 EST 2007
> An Alignment interrupt occurs when the instruction is lmw, stmw, lswi,
> stswi, or stswx, and the operand is in local store.
> GCC generated such instructions to handle memcpy() instead of kernel
> defined memcpy() without -mno-string option.
> +# An Alignment interrupt occurs when the instruction is lmw, stmw,
> lswi, lswx,
> +# stswi, or stswx, and the operand is in local store.
> +CFLAGS_run.o := -mno-string
> +CFLAGS_file.o := -mno-string
NAK. Please use memcpy_fromio() and friends instead,
that's what they're there for. I believe Arnd was working
Your patch is only a partial solution, you'd need -mno-multiple
-mno-algebraic -mno-dcbz too (and two of those don't even
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