ia64/linux-2.6.18-xen.hg

view include/asm-i386/smp.h @ 452:c7ed6fe5dca0

kexec: dont initialise regions in reserve_memory()

There is no need to initialise efi_memmap_res and boot_param_res in
reserve_memory() for the initial xen domain as it is done in
machine_kexec_setup_resources() using values from the kexec hypercall.

Signed-off-by: Simon Horman <horms@verge.net.au>
author Keir Fraser <keir.fraser@citrix.com>
date Thu Feb 28 10:55:18 2008 +0000 (2008-02-28)
parents 831230e53067
children
line source
1 #ifndef __ASM_SMP_H
2 #define __ASM_SMP_H
4 /*
5 * We need the APIC definitions automatically as part of 'smp.h'
6 */
7 #ifndef __ASSEMBLY__
8 #include <linux/kernel.h>
9 #include <linux/threads.h>
10 #include <linux/cpumask.h>
11 #endif
13 #ifdef CONFIG_X86_LOCAL_APIC
14 #ifndef __ASSEMBLY__
15 #include <asm/fixmap.h>
16 #include <asm/bitops.h>
17 #include <asm/mpspec.h>
18 #ifdef CONFIG_X86_IO_APIC
19 #include <asm/io_apic.h>
20 #endif
21 #include <asm/apic.h>
22 #endif
23 #endif
25 #define BAD_APICID 0xFFu
26 #ifdef CONFIG_SMP
27 #ifndef __ASSEMBLY__
29 /*
30 * Private routines/data
31 */
33 extern void smp_alloc_memory(void);
34 extern int pic_mode;
35 extern int smp_num_siblings;
36 extern cpumask_t cpu_sibling_map[];
37 extern cpumask_t cpu_core_map[];
39 extern void (*mtrr_hook) (void);
40 extern void zap_low_mappings (void);
41 extern void lock_ipi_call_lock(void);
42 extern void unlock_ipi_call_lock(void);
44 #define MAX_APICID 256
45 extern u8 x86_cpu_to_apicid[];
47 #define cpu_physical_id(cpu) x86_cpu_to_apicid[cpu]
49 #ifdef CONFIG_HOTPLUG_CPU
50 extern void cpu_exit_clear(void);
51 extern void cpu_uninit(void);
52 #endif
54 /*
55 * This function is needed by all SMP systems. It must _always_ be valid
56 * from the initial startup. We map APIC_BASE very early in page_setup(),
57 * so this is correct in the x86 case.
58 */
59 #define raw_smp_processor_id() (current_thread_info()->cpu)
61 extern cpumask_t cpu_callout_map;
62 extern cpumask_t cpu_callin_map;
63 extern cpumask_t cpu_possible_map;
65 /* We don't mark CPUs online until __cpu_up(), so we need another measure */
66 static inline int num_booting_cpus(void)
67 {
68 return cpus_weight(cpu_callout_map);
69 }
71 #ifdef CONFIG_X86_LOCAL_APIC
73 #ifdef APIC_DEFINITION
74 extern int hard_smp_processor_id(void);
75 #else
76 #include <mach_apicdef.h>
77 static inline int hard_smp_processor_id(void)
78 {
79 /* we don't want to mark this access volatile - bad code generation */
80 return GET_APIC_ID(*(unsigned long *)(APIC_BASE+APIC_ID));
81 }
82 #endif
84 static __inline int logical_smp_processor_id(void)
85 {
86 /* we don't want to mark this access volatile - bad code generation */
87 return GET_APIC_LOGICAL_ID(*(unsigned long *)(APIC_BASE+APIC_LDR));
88 }
90 #endif
92 extern int __cpu_disable(void);
93 extern void __cpu_die(unsigned int cpu);
94 #endif /* !__ASSEMBLY__ */
96 #else /* CONFIG_SMP */
98 #define cpu_physical_id(cpu) boot_cpu_physical_apicid
100 #define NO_PROC_ID 0xFF /* No processor magic marker */
102 #endif
103 #endif