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xen-devel
Re: [Xen-devel] Fix for 'acpi=off'
Puthiyaparambil, Aravindh wrote:
I tried the acpi=off on my 2-by x86_64 box running 32-bit SLES9.
Everything seems to work just fine except for a couple of pfn and page
fault non-fatal errors.
But with acpi=ht, Dom0 hangs while trying to bring up the SCSI devices.
I have included debug output for both cases.
I think this is the issue you're running into:
SMP mptable: no processors registered!
BIOS bug, MP table errors detected!...
... disabling SMP support. (tell your hw vendor)
With acpi=off acpi_lapic is non-zero so this code works:
/* ACPI may have already provided this data */
if (!acpi_lapic)
MP_processor_info(m);
But with acpi=ht, MP table processor info is ignored. I worked around it
by ignoring the processor entries in the MP table always and setting
num_processors=1.
-Arun
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