Re: 32-bit syscalls from 64-bit process on x86-64?

[Jeremy Fitzhardinge]

On Wed, 2004-12-15 at 05:27 +0100, Andi Kleen wrote:
> From 64bit-from-32bit the lcall is needed agreed. However as a 
> warning it will not work for all calls since a few check a bit
> in task_struct that says if the process is 32bit or 64bit
> (rather rare though, most prominent is signal handling) 

When delivering a signal to a 64-bit process (ie, without TIF_IA32 set),
do you think it should always set cs to be USER_CS?  At the moment, if
cs is something else (ie, USER32_CS), it tries to deliver the signal
with that current...

	J

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