Re: temp. mem mappings

Stephen C. Tweedie
2001-06-08T18:07:17Z

Hi,

On Thu, Jun 07, 2001 at 09:38:06PM -0400, cohutta wrote:

> >Right --- you can use alloc_pages but we haven't done the
> >initialisation of the kmalloc slabsl by this point.
>
> My testing indicates that i can't use __get_free_page(GFP_KERNEL)
> any time during setup_arch() [still x86]. It causes a BUG
> in slab.c (line 920) [linux 2.4.5].

After paging_init(), it should be OK --- as long as there is enough
memory that you don't end up calling the VM try_to_free_page routines.
Those will definitely choke this early in boot.

Cheers,
Stephen