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x86/platform: Introduce APIC post-initialization callback

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Some subarchitectures (such as vSMP) need to slightly adjust the
underlying APIC structure. Add an APIC post-initialization callback
to 'struct x86_platform_ops' for this purpose and use it for
adjusting the APIC structure on vSMP systems.

Signed-off-by: Ido Yariv <ido@wizery.com>
Acked-by: Shai Fultheim <shai@scalemp.com>
Link: http://lkml.kernel.org/r/1338675095-27260-1-git-send-email-ido@wizery.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ido Yariv
2012-06-03 01:11:34 +03:00
committed by Ingo Molnar
parent f9ba7179ce
commit 7db971b235
4 changed files with 20 additions and 9 deletions
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11
arch/x86/kernel/apic/probe_64.c
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@@ -23,11 +23,6 @@
#include <asm/ipi.h>
#include <asm/setup.h>
static int apicid_phys_pkg_id(int initial_apic_id, int index_msb)
{
return hard_smp_processor_id() >> index_msb;
}
/*
* Check the APIC IDs in bios_cpu_apicid and choose the APIC mode.
*/
@@ -48,10 +43,8 @@ void __init default_setup_apic_routing(void)
}
}
if (is_vsmp_box()) {
/* need to update phys_pkg_id */
apic->phys_pkg_id = apicid_phys_pkg_id;
}
if (x86_platform.apic_post_init)
x86_platform.apic_post_init();
}
/* Same for both flat and physical. */