Messages in this thread Patch in this message | | | Date | Mon, 11 Jan 2010 18:48:01 -0800 | From | Yinghai Lu <> | Subject | [RFC PATCH 3/4] x86: using logical flat for amd cpu too. |
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not sure it works again, could be bios fix the irq routing dest ?
tested that amd support logical flat too when cpus num <= 8 and even bsp apic id > 8
so could remove vendor check...
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
--- arch/x86/kernel/apic/apic.c | 11 ++--------- arch/x86/kernel/apic/probe_64.c | 13 ++----------- 2 files changed, 4 insertions(+), 20 deletions(-)
Index: linux-2.6/arch/x86/kernel/apic/apic.c =================================================================== --- linux-2.6.orig/arch/x86/kernel/apic/apic.c +++ linux-2.6/arch/x86/kernel/apic/apic.c @@ -1898,15 +1898,8 @@ void __cpuinit generic_processor_info(in max_physical_apicid = apicid; #ifdef CONFIG_X86_32 - switch (boot_cpu_data.x86_vendor) { - case X86_VENDOR_INTEL: - if (num_processors > 8) - def_to_bigsmp = 1; - break; - case X86_VENDOR_AMD: - if (max_physical_apicid >= 8) - def_to_bigsmp = 1; - } + if (num_processors > 8) + def_to_bigsmp = 1; #endif #if defined(CONFIG_SMP) || defined(CONFIG_X86_64) Index: linux-2.6/arch/x86/kernel/apic/probe_64.c =================================================================== --- linux-2.6.orig/arch/x86/kernel/apic/probe_64.c +++ linux-2.6/arch/x86/kernel/apic/probe_64.c @@ -67,17 +67,8 @@ void __init default_setup_apic_routing(v } #endif - if (apic == &apic_flat) { - switch (boot_cpu_data.x86_vendor) { - case X86_VENDOR_INTEL: - if (num_processors > 8) - apic = &apic_physflat; - break; - case X86_VENDOR_AMD: - if (max_physical_apicid >= 8) - apic = &apic_physflat; - } - } + if (apic == &apic_flat && num_processors > 8) + apic = &apic_physflat; printk(KERN_INFO "Setting APIC routing to %s\n", apic->name);
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