[lkml]   [2000]   [Feb]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: 2.3.43-pre[25] do not work with HIGHMEM=64GB
Ingo Molnar wrote:
> On Wed, 9 Feb 2000, Manfred Spraul wrote:
> > > Unable to handle kernel NULL pointer dereference at virtual addres
> > > s 00000088
> > > *pde = 00104001
> > Strange. Ingo reported the same problem. [...]
> this one is definitely fixed in pre5. (with directed APIC broadcasts it's
> not possible to hit an uninitialized CPU)

I would prefer if we explicitly initialize cpu_tlbstate during cpu_init:
it's cleaner, and it prevents any ordering problems within switch_mm()
[there is a tiny race, around 30 instructions]

Do you have any further crashes due to the tlb changes? I was running
with my debug patches without any special messages.

Oh. Are you using gcc-2.95? I forgot to mark the cpu_tlbstate array as
volatile [arch/i386/kernel/smp.c and include/asm/pgalloc.h], could you
change that?


To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
Please read the FAQ at

 \ /
  Last update: 2005-03-22 13:56    [W:0.031 / U:8.804 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site