diff options
| -rw-r--r-- | arch/x86/include/asm/apic.h | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/apic/apic.c | 9 | ||||
| -rw-r--r-- | arch/x86/kernel/apic/probe_64.c | 13 | ||||
| -rw-r--r-- | arch/x86/kernel/apic/x2apic_cluster.c | 5 | ||||
| -rw-r--r-- | arch/x86/kernel/apic/x2apic_phys.c | 10 |
5 files changed, 18 insertions, 21 deletions
diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h index dce1bf696cc..a6208dc7463 100644 --- a/arch/x86/include/asm/apic.h +++ b/arch/x86/include/asm/apic.h @@ -146,7 +146,7 @@ static inline u64 native_x2apic_icr_read(void) return val; } -extern int x2apic; +extern int x2apic, x2apic_phys; extern void check_x2apic(void); extern void enable_x2apic(void); extern void enable_IR_x2apic(void); diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index c12823eb55b..47c2d12e5cf 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -1265,14 +1265,7 @@ void __cpuinit end_local_APIC_setup(void) #ifdef CONFIG_X86_X2APIC void check_x2apic(void) { - int msr, msr2; - - if (!cpu_has_x2apic) - return; - - rdmsr(MSR_IA32_APICBASE, msr, msr2); - - if (msr & X2APIC_ENABLE) { + if (x2apic_enabled()) { pr_info("x2apic enabled by BIOS, switching to x2apic ops\n"); x2apic_preenabled = x2apic = 1; } diff --git a/arch/x86/kernel/apic/probe_64.c b/arch/x86/kernel/apic/probe_64.c index 70935dd904d..e7c163661c7 100644 --- a/arch/x86/kernel/apic/probe_64.c +++ b/arch/x86/kernel/apic/probe_64.c @@ -50,9 +50,16 @@ static struct apic *apic_probe[] __initdata = { void __init default_setup_apic_routing(void) { #ifdef CONFIG_X86_X2APIC - if (apic == &apic_x2apic_phys || apic == &apic_x2apic_cluster) { - if (!intr_remapping_enabled) - apic = &apic_flat; + if (x2apic && (apic != &apic_x2apic_phys && +#ifdef CONFIG_X86_UV + apic != &apic_x2apic_uv_x && +#endif + apic != &apic_x2apic_cluster)) { + if (x2apic_phys) + apic = &apic_x2apic_phys; + else + apic = &apic_x2apic_cluster; + printk(KERN_INFO "Setting APIC routing to %s\n", apic->name); } #endif diff --git a/arch/x86/kernel/apic/x2apic_cluster.c b/arch/x86/kernel/apic/x2apic_cluster.c index 4e39d9ad4d5..354b9c45601 100644 --- a/arch/x86/kernel/apic/x2apic_cluster.c +++ b/arch/x86/kernel/apic/x2apic_cluster.c @@ -14,10 +14,7 @@ DEFINE_PER_CPU(u32, x86_cpu_to_logical_apicid); static int x2apic_acpi_madt_oem_check(char *oem_id, char *oem_table_id) { - if (cpu_has_x2apic) - return 1; - - return 0; + return x2apic_enabled(); } /* Start with all IRQs pointing to boot CPU. IRQ balancing will shift them. */ diff --git a/arch/x86/kernel/apic/x2apic_phys.c b/arch/x86/kernel/apic/x2apic_phys.c index d2d52eb9f7e..5bcb174409b 100644 --- a/arch/x86/kernel/apic/x2apic_phys.c +++ b/arch/x86/kernel/apic/x2apic_phys.c @@ -10,7 +10,7 @@ #include <asm/apic.h> #include <asm/ipi.h> -static int x2apic_phys; +int x2apic_phys; static int set_x2apic_phys_mode(char *arg) { @@ -21,10 +21,10 @@ early_param("x2apic_phys", set_x2apic_phys_mode); static int x2apic_acpi_madt_oem_check(char *oem_id, char *oem_table_id) { - if (cpu_has_x2apic && x2apic_phys) - return 1; - - return 0; + if (x2apic_phys) + return x2apic_enabled(); + else + return 0; } /* Start with all IRQs pointing to boot CPU. IRQ balancing will shift them. */ |