Re: [Xen-devel] [PATCH] caml-stubdom: fix "red zone" bug

[Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>]

Ian Campbell writes ("Re: [Xen-devel] [PATCH] caml-stubdom: fix "red zone" 
bug"):
> A kernel (or anything which runs only in ring 0) generally cannot use
> red-zoning on itself because there is no stack switch when taking an
> exception/interrupt/etc from ring 0 and so the hardware has already
> trashed the red-zone before the software would get to do any
> fixup/obeying etc.

Thanks for the explanation.  It hadn't occurred to me that they'd
write something into the ABI which you can't implement when running in
a kernel ...

I've applied Patrick's patch.

Ian.

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