apic, smp and k6
a dual board (meant for pentium) with one k6 200 and
a 2.4.0-test11 kernel with APIC support enabled does oops here. removed the APIC support, and now everything is fine. i read here it´s a known problem ? at least someone else reported this, and it´s the same problem here.
regards, andreas
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected]
Please read the FAQ at http://www.tux.org/lkml/
Quoted 1 line
Quoted 1 line
Quoted 1 line
Quoted 1 line
Quoted 1 line
"Andreas" == Andreas Jellinghaus <[email protected]> writes:
Andreas> a dual board (meant for pentium) with one k6 200 and a Andreas> 2.4.0-test11 kernel with APIC support enabled does oops Andreas> here. removed the APIC support, and now everything is fine. i Andreas> read here it´s a known problem ? at least someone else reported Andreas> this, and it´s the same problem here.
Yes, a colleague of mine has a similar beast, hence Caldera ships for quite a while now with an appropriate patch. Now Christoph Hellwig has identified a simpler solution (updated for -test11 by me):
arch/i386/kernel/setup.c renamed from arch/i386/kernel/setup.c~ +2 -1
@@ -785,7 +785,8 @@/* * get boot-time SMP configuration: */ -if (smp_found_config) +if (smp_found_config &&/* try only if the cpu has a local apic */ +test_bit (X86_FEATURE_APIC , boot_cpu_data.x86_capability))get_smp_config ();#endif #ifdef CONFIG_X86_LOCAL_APIC
I think Alan has a similar thing in his test11-ac* series.
Hope that helps,
Torsten
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected]
Please read the FAQ at http://www.tux.org/lkml/
Quoted 7 lines
while now with an appropriate patch. Now Christoph Hellwig has identifi= ed a
simpler solution (updated for -test11 by me):
arch/i386/kernel/setup.c line 790
Quoted 7 lines
arch/i386/kernel/setup.c renamed from arch/i386/kernel/setup.c~ +2
-1@@ -785,7 +785,8 @@/* * get boot-time SMP configuration: */ -if (smp_found_config) +if (smp_found_config &&/* try only if the cpu has a local apic */ +test_bit (X86_FEATURE_APIC , boot_cpu_data.x86_capability))get_smp_config ();
This patch unfortunately does break some real setups, since it is legal to have non APIC on the CPU but an APIC as an addon chip.
Quoted 1 line
I think Alan has a similar thing in his test11-ac* series.
Maciej Rozycki provided a much better test, that from reports so far seems to be working
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected]
Please read the FAQ at http://www.tux.org/lkml/