5b09b2876e
As a stopgap until Mike Travis's x86-64 gs-based percpu patches are ready, provide workaround functions for x86_read/write_percpu for Xen's use. Specifically, this means that we can't really make use of vcpu placement, because we can't use a single gs-based memory access to get to vcpu fields. So disable all that for now. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Stephen Tweedie <sct@redhat.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
88 lines
2 KiB
C
88 lines
2 KiB
C
#ifndef _ASM_X86_SETUP_H
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#define _ASM_X86_SETUP_H
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#define COMMAND_LINE_SIZE 2048
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#ifndef __ASSEMBLY__
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/* Interrupt control for vSMPowered x86_64 systems */
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void vsmp_init(void);
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#ifdef CONFIG_X86_VISWS
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extern void visws_early_detect(void);
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extern int is_visws_box(void);
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#else
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static inline void visws_early_detect(void) { }
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static inline int is_visws_box(void) { return 0; }
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#endif
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/*
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* Any setup quirks to be performed?
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*/
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extern int (*arch_time_init_quirk)(void);
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extern int (*arch_pre_intr_init_quirk)(void);
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extern int (*arch_intr_init_quirk)(void);
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extern int (*arch_trap_init_quirk)(void);
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extern char * (*arch_memory_setup_quirk)(void);
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extern int (*mach_get_smp_config_quirk)(unsigned int early);
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extern int (*mach_find_smp_config_quirk)(unsigned int reserve);
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#ifndef CONFIG_PARAVIRT
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#define paravirt_post_allocator_init() do {} while (0)
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#endif
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#endif /* __ASSEMBLY__ */
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#ifdef __KERNEL__
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#ifdef __i386__
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#include <linux/pfn.h>
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/*
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* Reserved space for vmalloc and iomap - defined in asm/page.h
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*/
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#define MAXMEM_PFN PFN_DOWN(MAXMEM)
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#define MAX_NONPAE_PFN (1 << 20)
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#endif /* __i386__ */
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#define PARAM_SIZE 4096 /* sizeof(struct boot_params) */
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#define OLD_CL_MAGIC 0xA33F
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#define OLD_CL_ADDRESS 0x020 /* Relative to real mode data */
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#define NEW_CL_POINTER 0x228 /* Relative to real mode data */
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#ifndef __ASSEMBLY__
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#include <asm/bootparam.h>
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#ifndef _SETUP
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/*
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* This is set up by the setup-routine at boot-time
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*/
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extern struct boot_params boot_params;
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/*
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* Do NOT EVER look at the BIOS memory size location.
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* It does not work on many machines.
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*/
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#define LOWMEMSIZE() (0x9f000)
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#ifdef __i386__
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void __init i386_start_kernel(void);
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extern void probe_roms(void);
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extern unsigned long init_pg_tables_start;
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extern unsigned long init_pg_tables_end;
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#else
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void __init x86_64_init_pda(void);
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void __init x86_64_start_kernel(char *real_mode);
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void __init x86_64_start_reservations(char *real_mode_data);
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#endif /* __i386__ */
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#endif /* _SETUP */
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#endif /* __ASSEMBLY__ */
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#endif /* __KERNEL__ */
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#endif /* _ASM_X86_SETUP_H */
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