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Commit 6627d242 authored by Yinghai Lu's avatar Yinghai Lu Committed by Ingo Molnar
Browse files

x86: cpu/common*.c, merge early_identify_cpu() 



Signed-off-by: default avatarYinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 5122c890

arch/x86/kernel/cpu/common.c

+4 −0
Original line number Original line Diff line number Diff line
@@ -490,7 +490,11 @@ static void __cpuinit get_cpu_cap(struct cpuinfo_x86 *c) 
 */

 */

static void __init early_identify_cpu(struct cpuinfo_x86 *c)

static void __init early_identify_cpu(struct cpuinfo_x86 *c)

{

{

#ifdef CONFIG_X86_64

	c->x86_clflush_size = 64;

#else

	c->x86_clflush_size = 32;

	c->x86_clflush_size = 32;

#endif

	c->x86_cache_alignment = c->x86_clflush_size;

	c->x86_cache_alignment = c->x86_clflush_size;





	if (!have_cpuid_p())

	if (!have_cpuid_p())

arch/x86/kernel/cpu/common_64.c

+16 −3
Original line number Original line Diff line number Diff line
@@ -482,15 +482,28 @@ static void __cpuinit get_cpu_cap(struct cpuinfo_x86 *c) 
#endif

#endif

}

}





/* Do some early cpuid on the boot CPU to get some parameter that are

/*

   needed before check_bugs. Everything advanced is in identify_cpu

 * Do minimum CPU detection early.

   below. */

 * Fields really needed: vendor, cpuid_level, family, model, mask,

 * cache alignment.

 * The others are not touched to avoid unwanted side effects.

 *

 * WARNING: this function is only called on the BP.  Don't add code here

 * that is supposed to run on all CPUs.

 */

static void __init early_identify_cpu(struct cpuinfo_x86 *c)

static void __init early_identify_cpu(struct cpuinfo_x86 *c)

{

{





#ifdef CONFIG_X86_64

	c->x86_clflush_size = 64;

	c->x86_clflush_size = 64;

#else

	c->x86_clflush_size = 32;

#endif

	c->x86_cache_alignment = c->x86_clflush_size;

	c->x86_cache_alignment = c->x86_clflush_size;





	if (!have_cpuid_p())

		return;



	memset(&c->x86_capability, 0, sizeof c->x86_capability);

	memset(&c->x86_capability, 0, sizeof c->x86_capability);





	c->extended_cpuid_level = 0;

	c->extended_cpuid_level = 0;