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d3561b7fa0
Create a paravirt.h header for all the critical operations which need to be
replaced with hypervisor calls, and include that instead of defining native
operations, when CONFIG_PARAVIRT.
This patch does the dumbest possible replacement of paravirtualized
instructions: calls through a "paravirt_ops" structure. Currently these are
function implementations of native hardware: hypervisors will override the ops
structure with their own variants.
All the pv-ops functions are declared "fastcall" so that a specific
register-based ABI is used, to make inlining assember easier.
And:
+From: Andy Whitcroft <apw@shadowen.org>
The paravirt ops introduce a 'weak' attribute onto memory_setup().
Code ordering leads to the following warnings on x86:
arch/i386/kernel/setup.c:651: warning: weak declaration of
`memory_setup' after first use results in unspecified behavior
Move memory_setup() to avoid this.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Zachary Amsden <zach@vmware.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Andy Whitcroft <apw@shadowen.org>
83 lines
2.9 KiB
C
83 lines
2.9 KiB
C
/*
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* Just a place holder. We don't want to have to test x86 before
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* we include stuff
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*/
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#ifndef _i386_SETUP_H
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#define _i386_SETUP_H
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#ifdef __KERNEL__
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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
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#define PARAM_SIZE 4096
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#define COMMAND_LINE_SIZE 256
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#define OLD_CL_MAGIC_ADDR 0x90020
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#define OLD_CL_MAGIC 0xA33F
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#define OLD_CL_BASE_ADDR 0x90000
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#define OLD_CL_OFFSET 0x90022
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#define NEW_CL_POINTER 0x228 /* Relative to real mode data */
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#ifndef __ASSEMBLY__
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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 unsigned char boot_params[PARAM_SIZE];
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#define PARAM (boot_params)
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#define SCREEN_INFO (*(struct screen_info *) (PARAM+0))
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#define EXT_MEM_K (*(unsigned short *) (PARAM+2))
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#define ALT_MEM_K (*(unsigned long *) (PARAM+0x1e0))
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#define E820_MAP_NR (*(char*) (PARAM+E820NR))
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#define E820_MAP ((struct e820entry *) (PARAM+E820MAP))
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#define APM_BIOS_INFO (*(struct apm_bios_info *) (PARAM+0x40))
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#define IST_INFO (*(struct ist_info *) (PARAM+0x60))
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#define DRIVE_INFO (*(struct drive_info_struct *) (PARAM+0x80))
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#define SYS_DESC_TABLE (*(struct sys_desc_table_struct*)(PARAM+0xa0))
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#define EFI_SYSTAB ((efi_system_table_t *) *((unsigned long *)(PARAM+0x1c4)))
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#define EFI_MEMDESC_SIZE (*((unsigned long *) (PARAM+0x1c8)))
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#define EFI_MEMDESC_VERSION (*((unsigned long *) (PARAM+0x1cc)))
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#define EFI_MEMMAP ((void *) *((unsigned long *)(PARAM+0x1d0)))
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#define EFI_MEMMAP_SIZE (*((unsigned long *) (PARAM+0x1d4)))
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#define MOUNT_ROOT_RDONLY (*(unsigned short *) (PARAM+0x1F2))
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#define RAMDISK_FLAGS (*(unsigned short *) (PARAM+0x1F8))
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#define VIDEO_MODE (*(unsigned short *) (PARAM+0x1FA))
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#define ORIG_ROOT_DEV (*(unsigned short *) (PARAM+0x1FC))
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#define AUX_DEVICE_INFO (*(unsigned char *) (PARAM+0x1FF))
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#define LOADER_TYPE (*(unsigned char *) (PARAM+0x210))
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#define KERNEL_START (*(unsigned long *) (PARAM+0x214))
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#define INITRD_START (*(unsigned long *) (PARAM+0x218))
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#define INITRD_SIZE (*(unsigned long *) (PARAM+0x21c))
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#define EDID_INFO (*(struct edid_info *) (PARAM+0x140))
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#define EDD_NR (*(unsigned char *) (PARAM+EDDNR))
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#define EDD_MBR_SIG_NR (*(unsigned char *) (PARAM+EDD_MBR_SIG_NR_BUF))
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#define EDD_MBR_SIGNATURE ((unsigned int *) (PARAM+EDD_MBR_SIG_BUF))
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#define EDD_BUF ((struct edd_info *) (PARAM+EDDBUF))
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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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struct e820entry;
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char * __init machine_specific_memory_setup(void);
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char *memory_setup(void);
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int __init copy_e820_map(struct e820entry * biosmap, int nr_map);
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int __init sanitize_e820_map(struct e820entry * biosmap, char * pnr_map);
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void __init add_memory_region(unsigned long long start,
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unsigned long long size, int type);
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#endif /* __ASSEMBLY__ */
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#endif /* _i386_SETUP_H */
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