Messages in this thread | | | Date | Fri, 23 Feb 2007 12:37:18 +0000 | From | Alan <> | Subject | Re: [patch 00/13] Syslets, "Threadlets", generic AIO support, v3 |
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> Do you not understand that real user code touches FPU state at > unpredictable (to the kernel) junctures? Maybe not in a database or a
We don't care. We don't have to care. The kernel threadlets don't execute in user space and don't do FP.
> web server, but in the GUIs and web-based monitoring applications that > are 99% of the potential customers for kernel AIO? I have no idea > what a %cr3 is, but if you don't fence off thread-local stuff from the
How about you go read the intel architecture manuals then you might know more.
> > We don't have an errno in the kernel because its a stupid idea. Errno is > > a user space hack for compatibility with 1970's bad design. So its not > > relevant either. > > Dude, it's thread-local, and the glibc wrapper around most synchronous
Last time I checked glibc was in userspace and the interface for kernel AIO is a matter for the kernel so errno is irrelevant, plus any threadlets doing system calls will only be living in kernel space anyway.
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