shm bugs revisited (2)

[Stephen C. Tweedie]

Hi,

On Thu, 27 Jan 2000 19:38:09 +0100 (CET), Ingo Molnar
<mingo en chiara.csoma.elte.hu> said:

> On 27 Jan 2000, Christoph Rohland wrote:

>> running 2.3.{40,41-pre2}+smp-41-A1 is see inconsistent data when using
>> shm (2.3.39 seems to be o.K.):

> does it happen with smp-2.3.41-A2 (attached)? Reverted the optimization of
> reading the pagetable address from current->. (like Manfred suggested too)

No effect on my init segvs.  BTW, even #define'ing _PAGE_GLOBAL to
zero doesn't help, and I still see the problem when booting with
maxcpus=1, so it's definitely not a cross-cpu TLB invalidation problem
(and the individual invlpg() calls you previously had in the kmap code
should affect even global pages on a single CPU system, shouldn't
they?)

--Stephen

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