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authorIngo Molnar <mingo@elte.hu>2008-10-27 07:38:02 -0400
committerIngo Molnar <mingo@elte.hu>2008-10-27 07:38:02 -0400
commit5292ae11babca23c3ff82593630d2d7eebc350a9 (patch)
tree30a6c8123b35686098f306ea39398b7621f42054 /arch/x86/include/asm/numaq/wakecpu.h
parentb0f209898f1a177bd503d49215b8c6628797a81c (diff)
parent0173a3265b228da319ceb9c1ec6a5682fd1b2d92 (diff)
Merge commit 'v2.6.28-rc2' into x86/uv
Diffstat (limited to 'arch/x86/include/asm/numaq/wakecpu.h')
-rw-r--r--arch/x86/include/asm/numaq/wakecpu.h43
1 files changed, 43 insertions, 0 deletions
diff --git a/arch/x86/include/asm/numaq/wakecpu.h b/arch/x86/include/asm/numaq/wakecpu.h
new file mode 100644
index 000000000000..c577bda5b1c5
--- /dev/null
+++ b/arch/x86/include/asm/numaq/wakecpu.h
@@ -0,0 +1,43 @@
1#ifndef __ASM_NUMAQ_WAKECPU_H
2#define __ASM_NUMAQ_WAKECPU_H
3
4/* This file copes with machines that wakeup secondary CPUs by NMIs */
5
6#define WAKE_SECONDARY_VIA_NMI
7
8#define TRAMPOLINE_LOW phys_to_virt(0x8)
9#define TRAMPOLINE_HIGH phys_to_virt(0xa)
10
11#define boot_cpu_apicid boot_cpu_logical_apicid
12
13/* We don't do anything here because we use NMI's to boot instead */
14static inline void wait_for_init_deassert(atomic_t *deassert)
15{
16}
17
18/*
19 * Because we use NMIs rather than the INIT-STARTUP sequence to
20 * bootstrap the CPUs, the APIC may be in a weird state. Kick it.
21 */
22static inline void smp_callin_clear_local_apic(void)
23{
24 clear_local_APIC();
25}
26
27static inline void store_NMI_vector(unsigned short *high, unsigned short *low)
28{
29 printk("Storing NMI vector\n");
30 *high = *((volatile unsigned short *) TRAMPOLINE_HIGH);
31 *low = *((volatile unsigned short *) TRAMPOLINE_LOW);
32}
33
34static inline void restore_NMI_vector(unsigned short *high, unsigned short *low)
35{
36 printk("Restoring NMI vector\n");
37 *((volatile unsigned short *) TRAMPOLINE_HIGH) = *high;
38 *((volatile unsigned short *) TRAMPOLINE_LOW) = *low;
39}
40
41#define inquire_remote_apic(apicid) {}
42
43#endif /* __ASM_NUMAQ_WAKECPU_H */