diff options
| author | Ido Yariv <ido@wizery.com> | 2012-06-03 02:11:34 +0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2012-06-06 11:06:19 +0400 |
| commit | 7db971b235480849aa5b9209b67b62e987b3181b (patch) | |
| tree | dbb69fb414c6de564bbbc079ae8038a4925a78a2 /arch/x86/kernel/vsmp_64.c | |
| parent | f9ba7179ce91fb77b2adf6eaab3676ab3a1f5a15 (diff) | |
| download | linux-7db971b235480849aa5b9209b67b62e987b3181b.tar.xz | |
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 <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>
Diffstat (limited to 'arch/x86/kernel/vsmp_64.c')
| -rw-r--r-- | arch/x86/kernel/vsmp_64.c | 13 |
1 files changed, 13 insertions, 0 deletions
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(); |