Re: Ugh in 2.1.60

H. Peter Anvin (hpa@transmeta.com)
31 Oct 1997 21:29:09 GMT

Followup to: <k2en51uavl.fsf@zero.aec.at>
By author: Andi Kleen <ak@muc.de>
In newsgroup: linux.dev.kernel
>
> The problem of returning two values in get_user() can be simply solved
> by using asm wrappers and the same trick that the syscalls use - just
> set the carry bit on error and fetch the error from another register
> then.
>

At least on the i386, syscall errors are handled by returning -errno,
which means that negative values cannot be legitimately returned.

-hpa

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