Gareth Hughes <gareth@precisioninsight.com> writes:
> To properly support user-space SSE, we will have to make things
> binary incompatible. Do you have a better suggestion of how to
> handle the new FPU save format in signal contexts? If so, please
> let me know.
- concatenate the new structure after the old
- when creating the signal context fill in the old fpstate with the
data retrieved from the old one or at least leave the fp regs empty
- move the magic word somewhere in the range of the old structure. I
propsed misuing the csseg field which sould work just fine.
> You shouldn't compile the new headers with an old kernel.
I'm never compiling headers. But I have new headers installed while
running old kernels and this is what is common practice forever. You
cannot simply break this. But thi is unimportant since it's only a
side effect of glibc on x86 using the kernel sigcontext.h definition.
If I go over to provide an own implementation (which I will have to
do) than it will fail regardless of the kernel headers installed.
-- ---------------. drepper at gnu.org ,-. 1325 Chesapeake Terrace Ulrich Drepper \ ,-------------------' \ Sunnyvale, CA 94089 USA Red Hat `--' drepper at redhat.com `------------------------- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Wed Jun 07 2000 - 21:00:24 EST