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SubjectRe: copy_from_user() fix


On Mon, 24 Aug 1998, Philip Blundell wrote:

> Date: Mon, 24 Aug 1998 11:54:37 +0100
> From: Philip Blundell <pb@nexus.co.uk>
> To: Pavel Machek <pavel@bug.ucw.cz>
> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>, hpa@transmeta.com,
> linux-kernel@vger.rutgers.edu
> Subject: Re: copy_from_user() fix
>
> >Still, I think that this could be in kernel. It is faster to do here
> >(you can SIGSEGV it directly from pagefault handler),
>
> I don't think we should be worried about the performance of segfaulting
> applications.
>
Perhaps except emulators like dosemu, where there are some valid uses
of faults to let the emulator know e.g. which video pages are accessed?
(At least as far as I understand that)

> p.
>
Wojtek


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