From: Shaohua Li <shaohua.li@intel.com>
Date: Thu, 23 Mar 2006 10:59:53 +0000 (-0800)
Subject: [PATCH] x86: deterine xapic using apic version
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=7c5c1e427b5e83807fd05419d1cf6991b9d87247;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[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: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/arch/i386/kernel/io_apic.c b/arch/i386/kernel/io_apic.c
index 39d9a5fa907e..fd1c60cfd294 100644
--- a/arch/i386/kernel/io_apic.c
+++ b/arch/i386/kernel/io_apic.c
@@ -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
diff --git a/arch/i386/kernel/mpparse.c b/arch/i386/kernel/mpparse.c
index e85e463af7ce..8d8aa9d1796d 100644
--- a/arch/i386/kernel/mpparse.c
+++ b/arch/i386/kernel/mpparse.c
@@ -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;