On Sat, 2017-03-04 at 23:54:34 UTC, Anton Blanchard wrote:
> From: Anton Blanchard <an...@samba.org>
>
> I see a panic in early boot when building with a recent gcc toolchain.
> The issue is a divide by zero, which is undefined. Older toolchains
> let us get away with it:
>
> int foo(int a) { return a / 0; }
>
> foo:
> li 9,0
> divw 3,3,9
> extsw 3,3
> blr
>
> But newer ones catch it:
>
> foo:
> trap
>
> Add a check to avoid the divide by zero.
>
> Fixes: bd067f83b084 ("powerpc/64: Fix naming of cache block vs. cache line")
> Signed-off-by: Anton Blanchard <an...@samba.org>
> Acked-by: Benjamin Herrenschmidt <b...@kernel.crashing.org>
Applied to powerpc fixes, thanks.
https://git.kernel.org/powerpc/c/6ba422c75facb1b1e0e206c464ee12
cheers
