On 04/09/2016 19:29, Konstantin Belousov wrote:
> This is possible, of course. But it would not affect "SMP: Added CPU ..."
> lines.
Well, looking at the code it seems that only if mptable is used, then those
lines are expected to correctly identify a BSP. With MADT there is no
information to identify the BSP and that is supposed to happen in
cpu_mp_start().
static void
madt_add_cpu(u_int acpi_id, u_int apic_id, u_int flags)
{
struct lapic_info *la;
/*
* The MADT does not include a BSP flag, so we have to let the
* MP code figure out which CPU is the BSP on its own.
*/
...
In other words, those "SMP: Added CPU ..." are truly a cosmetic issue.
And it's my guess (just a guess) that BSP LAPIC ID is incorrect in the
problematic configuration.
--
Andriy Gapon
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