Messages in this thread | | | Date | Tue, 18 Nov 2003 23:24:04 -0800 (PST) | From | Linus Torvalds <> | Subject | Re: [PATCH][2.6-mm] Fix 4G/4G X11/vm86 oops |
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On Wed, 19 Nov 2003, Zwane Mwaikambo wrote: > > I just tried the RH9 2.96 and it also triple faulted. Oh my.. The only > unique thing about this hardware compared ot the other stuff i have here > is that it's an AMD K6. Everything else is Intel.
Different TLB sizes (and organizations) etc can _easily_ matter, if the Intel one just happens to work because something stays in the TLB while the page table mapping is incorrect and keeps the system afloat.
Or - and in this case more likely - since the problem is fixed by running a (complex) thing that trashes all over the DTLB/ITLB, it's more likely that there might be a _missing_ TLB invalidate somewhere, and that the Intel boxes stay up because they have a smaller TLB and the stale entry gets flushed out early from them.
But you already tried a "flush_tlb_all()" which _should_ have flushed absolutely everything, including global tables. I dunno. It could be hitting a CPU bug too, of course.
It would be interesting to hear if other K6 users see problems..
Linus
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