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SubjectRe: 2.6.23-rc1-mm2
On 8/1/07, Andrew Morton <akpm@linux-foundation.org> wrote:
> On Wed, 01 Aug 2007 16:30:08 -0400
> Valdis.Kletnieks@vt.edu wrote:
>
> > As an aside, it looks like bits&pieces of dynticks-for-x86_64 are in there.
> > In particular, x86_64-enable-high-resolution-timers-and-dynticks.patch is in
> > there, adding a menu that depends on GENERIC_CLOCKEVENTS, but then nothing
> > in the x86_64 tree actually *sets* it. There's a few other dynticks-related
> > prep patches in there as well. Does this mean it's back to "coming soon to
> > a CPU near you" status? :)
>
> I've lost the plot on that stuff: I'm just leaving things as-is for now,
> wait for Thomas to return from vacation so we can have another run at it.

For what its worth: 2.6.22-rc6-mm1 with NO_HZ works for me on an AMD
SMP system without trouble.

Next try with 2.6.23-rc1-mm2 and SPARSEMEM:
Probably the same exception, but this time with Call Trace:
[ 0.000000] Bootmem setup node 0 0000000000000000-0000000080000000
[ 0.000000] Bootmem setup node 1 0000000080000000-0000000120000000
[ 0.000000] Zone PFN ranges:
[ 0.000000] DMA 0 -> 4096
[ 0.000000] DMA32 4096 -> 1048576
[ 0.000000] Normal 1048576 -> 1179648
[ 0.000000] Movable zone start PFN for each node
[ 0.000000] early_node_map[4] active PFN ranges
[ 0.000000] 0: 0 -> 159
[ 0.000000] 0: 256 -> 524288
[ 0.000000] 1: 524288 -> 917488
[ 0.000000] 1: 1048576 -> 1179648
PANIC: early exception rip ffffffff807cddb5 error 2 cr2 ffffe20003000010
[ 0.000000]
[ 0.000000] Call Trace:
[ 0.000000] [<ffffffff807cddb5>] memmap_init_zone+0xb5/0x130
[ 0.000000] [<ffffffff807ce874>] init_currently_empty_zone+0x84/0x110
[ 0.000000] [<ffffffff807cec93>] free_area_init_node+0x393/0x3e0
[ 0.000000] [<ffffffff807cefea>] free_area_init_nodes+0x2da/0x320
[ 0.000000] [<ffffffff807c9c97>] paging_init+0x87/0x90
[ 0.000000] [<ffffffff807c0f85>] setup_arch+0x355/0x470
[ 0.000000] [<ffffffff807bc967>] start_kernel+0x57/0x330
[ 0.000000] [<ffffffff807bc12d>] _sinittext+0x12d/0x140
[ 0.000000]
[ 0.000000] RIP memmap_init_zone+0xb5/0x130

(gdb) list *0xffffffff807cddb5
0xffffffff807cddb5 is in memmap_init_zone (include/linux/list.h:32).
27 #define LIST_HEAD(name) \
28 struct list_head name = LIST_HEAD_INIT(name)
29
30 static inline void INIT_LIST_HEAD(struct list_head *list)
31 {
32 list->next = list;
33 list->prev = list;
34 }
35
36 /*

I will test more tomorrow...

Torsten
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