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x86: pass in cpu number to switch_to_new_gdt()

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Impact: cleanup, prepare for xen boot fix.

Xen needs to call this function very early to setup the GDT and
per-cpu segments.  Remove the call to smp_processor_id() and just
pass in the cpu number.

Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Brian Gerst
2009-01-30 17:47:53 +09:00
committed by Tejun Heo
parent 2749ebe320
commit 552be871e6
5 changed files with 12 additions and 12 deletions
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7
arch/x86/kernel/cpu/common.c
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@@ -255,10 +255,9 @@ __u32 cleared_cpu_caps[NCAPINTS] __cpuinitdata;
/* Current gdt points %fs at the "master" per-cpu area: after this,
* it's on the real one. */
void switch_to_new_gdt(void)
void switch_to_new_gdt(int cpu)
{
struct desc_ptr gdt_descr;
int cpu = smp_processor_id();
gdt_descr.address = (long)get_cpu_gdt_table(cpu);
gdt_descr.size = GDT_SIZE - 1;
@@ -993,7 +992,7 @@ void __cpuinit cpu_init(void)
* and set up the GDT descriptor:
*/
switch_to_new_gdt();
switch_to_new_gdt(cpu);
loadsegment(fs, 0);
load_idt((const struct desc_ptr *)&idt_descr);
@@ -1098,7 +1097,7 @@ void __cpuinit cpu_init(void)
clear_in_cr4(X86_CR4_VME|X86_CR4_PVI|X86_CR4_TSD|X86_CR4_DE);
load_idt(&idt_descr);
switch_to_new_gdt();
switch_to_new_gdt(cpu);
/*
* Set up and load the per-CPU TSS and LDT