Re: The 4GB memory thing

Kanoj Sarcar
1999-11-04T18:48:20Z

>
> kanoj@google.engr.sgi.com (Kanoj Sarcar) writes:
>
> > I have a 2.2 patch for 4Gb support, which has seen a lot of stress
> > testing by now. The 2.3 >2gb support uses a different (and better
> > approach), but last I checked, things like rawio did not work above
> > >2Gb. The 64Gb support is completely new ...
>
> 2.2.13aa3 includes both 4g bigmem support and rawio and you can do
> rawio on all the memory (bigmem included).
>
> ftp://ftp.*.kernel.org/pub/linux/kernel/people/andrea/kernels/v2.2/2.2.13aa3/
>
> This is the README on how to go in sync with 2.2.13aa3:
>
> ftp://ftp.*.kernel.org/pub/linux/kernel/people/andrea/tools/apply-patches/README.gz
>
> --
> Andrea
>

I don't see a README.gz under
http://www.kernel.org/pub/linux/kernel/people/andrea/tools/apply-patches/

In any case, did you a have a small technical README on how rawio works
on bigmem in 2.2.13aa3? Btw, I haven't seen the rawio 2.2 port, I am
assuming its very similar to 2.3 ... where brw_kiovec() refuses to
accept PageHighMem pages. I didn't see anything in z-bigmem-2.2.13aa3-7
that tinkers either with fs/buffer.c.

Thanks.

Kanoj