Messages in this thread Patch in this message | | | From | James Bottomley <> | Subject | [PATCH 10/13] [VOYAGER] x86: make disabling the apics functional instead of a flag | Date | Sun, 8 Mar 2009 11:48:23 -0500 |
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This allows the elimination of some ifdef guards in setup.c. Additionally probe_32.c doesn't need to run through the apics in generic_apic_probe() if they're disabled.
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com> --- arch/x86/include/asm/apic.h | 6 ++++++ arch/x86/kernel/apic/apic.c | 3 +++ arch/x86/kernel/apic/probe_32.c | 3 +++ arch/x86/kernel/setup.c | 4 +--- 4 files changed, 13 insertions(+), 3 deletions(-)
diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h index 4ef949c..930ebf5 100644 --- a/arch/x86/include/asm/apic.h +++ b/arch/x86/include/asm/apic.h @@ -230,12 +230,18 @@ static inline int apic_is_clustered_box(void) extern u8 setup_APIC_eilvt_mce(u8 vector, u8 msg_type, u8 mask); extern u8 setup_APIC_eilvt_ibs(u8 vector, u8 msg_type, u8 mask); +static inline void disable_APIC(void) +{ + disable_local_APIC(); + disable_apic = 1; +} #else /* !CONFIG_X86_LOCAL_APIC */ static inline void lapic_shutdown(void) { } #define local_apic_timer_c2_ok 1 static inline void init_apic_mappings(void) { } static inline void disable_local_APIC(void) { } +static inline void disable_APIC(void) { } #endif /* !CONFIG_X86_LOCAL_APIC */ diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index ee68005..cb6e5b8 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -1508,6 +1508,9 @@ void __init early_init_lapic_mapping(void) */ void __init init_apic_mappings(void) { + if (disable_apic) + return; + #ifdef CONFIG_X86_X2APIC if (x2apic) { boot_cpu_physical_apicid = read_apic_id(); diff --git a/arch/x86/kernel/apic/probe_32.c b/arch/x86/kernel/apic/probe_32.c index 141c99a..770b5c4 100644 --- a/arch/x86/kernel/apic/probe_32.c +++ b/arch/x86/kernel/apic/probe_32.c @@ -225,6 +225,9 @@ void __init generic_bigsmp_probe(void) void __init generic_apic_probe(void) { + if (disable_apic) + return; + if (!cmdline_apic) { int i; for (i = 0; apic_probe[i]; i++) { diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index bae35f9..62e9f59 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -750,9 +750,7 @@ void __init setup_arch(char **cmdline_p) reserve_early_setup_data(); if (acpi_mps_check()) { -#ifdef CONFIG_X86_LOCAL_APIC - disable_apic = 1; -#endif + disable_APIC(); setup_clear_cpu_cap(X86_FEATURE_APIC); } -- 1.6.1.3
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