> ---
> > __asm__ __volatile__ (
> 158c157
> < "3: movw $0x1AEB, 1b\n"
> ---
> > "3: movw $0x1AEB, 1b\n" /* jmp on 26 bytes */
> 166c165
> < */
> ---
> >
> 170c169
> < "1: nop\n" /* prefetch 320(%0)\n" */
> ---
> > "1: prefetch 320(%0)\n"
> -------------------------
> Please let me know if that makes sense :).
Very interesting.
You've removed only the prefetch 320(%0), not the other prefetch
instructions?
prefetch 320(%0) can fetch memory behind the end of the source page.
Perhaps it accesses memory in the ISA hole, or beyond the end of memory?
Could you post the e820 map from dmesg?
It's possible to build manually a memory map.
Could you build one with wide margins from "dangerous" areas? (untested:
mem=exactmap mem=620k@0 mem=<your mem in MB-2>M@1M)
Then boot with prefetch enabled.
-- Manfred - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Mon May 07 2001 - 21:00:20 EST