Commit 7c5c1e42 authored by Shaohua Li's avatar Shaohua Li Committed by Linus Torvalds
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[PATCH] x86: deterine xapic using apic version



Checking APIC version instead of CPU family to determine XAPIC. Family 6
CPU could have xapic as well.

Signed-off-by: Shaohua Li<shaohua.li@intel.com>
Cc: Dave Jones <davej@codemonkey.org.uk>
Cc: "Seth, Rohit" <rohit.seth@intel.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent f2d0d263
......@@ -1761,7 +1761,8 @@ static void __init setup_ioapic_ids_from_mpc(void)
* Don't check I/O APIC IDs for xAPIC systems. They have
* no meaning without the serial APIC bus.
*/
if (!(boot_cpu_data.x86_vendor == X86_VENDOR_INTEL && boot_cpu_data.x86 < 15))
if (!(boot_cpu_data.x86_vendor == X86_VENDOR_INTEL)
|| APIC_XAPIC(apic_version[boot_cpu_physical_apicid]))
return;
/*
* This is broken; anything with a real cpu count has to
......
......@@ -937,7 +937,8 @@ void __init mp_register_ioapic (
mp_ioapics[idx].mpc_apicaddr = address;
set_fixmap_nocache(FIX_IO_APIC_BASE_0 + idx, address);
if ((boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) && (boot_cpu_data.x86 < 15))
if ((boot_cpu_data.x86_vendor == X86_VENDOR_INTEL)
&& !APIC_XAPIC(apic_version[boot_cpu_physical_apicid]))
tmpid = io_apic_get_unique_id(idx, id);
else
tmpid = id;
......
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