From 7db971b235480849aa5b9209b67b62e987b3181b Mon Sep 17 00:00:00 2001 From: Ido Yariv Date: Sun, 3 Jun 2012 01:11:34 +0300 Subject: x86/platform: Introduce APIC post-initialization callback 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 Acked-by: Shai Fultheim Link: http://lkml.kernel.org/r/1338675095-27260-1-git-send-email-ido@wizery.com Signed-off-by: Ingo Molnar --- arch/x86/kernel/vsmp_64.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'arch/x86/kernel/vsmp_64.c') diff --git a/arch/x86/kernel/vsmp_64.c b/arch/x86/kernel/vsmp_64.c index 8eeb55a551b4..59eea855f451 100644 --- a/arch/x86/kernel/vsmp_64.c +++ b/arch/x86/kernel/vsmp_64.c @@ -187,12 +187,25 @@ static void __init vsmp_cap_cpus(void) #endif } +static int apicid_phys_pkg_id(int initial_apic_id, int index_msb) +{ + return hard_smp_processor_id() >> index_msb; +} + +static void vsmp_apic_post_init(void) +{ + /* need to update phys_pkg_id */ + apic->phys_pkg_id = apicid_phys_pkg_id; +} + void __init vsmp_init(void) { detect_vsmp_box(); if (!is_vsmp_box()) return; + x86_platform.apic_post_init = vsmp_apic_post_init; + vsmp_cap_cpus(); set_vsmp_pv_ops(); -- cgit v1.2.3