cregit-Linux how code gets into the kernel

Release 4.11 arch/x86/boot/compressed/misc.h

#ifndef BOOT_COMPRESSED_MISC_H

#define BOOT_COMPRESSED_MISC_H

/*
 * Special hack: we have to be careful, because no indirections are allowed here,
 * and paravirt_ops is a kind of one. As it will only run in baremetal anyway,
 * we just keep it from happening. (This list needs to be extended when new
 * paravirt and debugging variants are added.)
 */

#undef CONFIG_PARAVIRT

#undef CONFIG_PARAVIRT_SPINLOCKS

#undef CONFIG_KASAN

#include <linux/linkage.h>
#include <linux/screen_info.h>
#include <linux/elf.h>
#include <linux/io.h>
#include <asm/page.h>
#include <asm/boot.h>
#include <asm/bootparam.h>
#include <asm/bootparam_utils.h>


#define BOOT_BOOT_H
#include "../ctype.h"

#ifdef CONFIG_X86_64

#define memptr long
#else

#define memptr unsigned
#endif

/* misc.c */
extern memptr free_mem_ptr;
extern memptr free_mem_end_ptr;
extern struct boot_params *boot_params;
void __putstr(const char *s);
void __puthex(unsigned long value);

#define error_putstr(__x)  __putstr(__x)

#define error_puthex(__x)  __puthex(__x)

#ifdef CONFIG_X86_VERBOSE_BOOTUP


#define debug_putstr(__x)  __putstr(__x)

#define debug_puthex(__x)  __puthex(__x)

#define debug_putaddr(__x) { \
                debug_putstr(#__x ": 0x"); \
                debug_puthex((unsigned long)(__x)); \
                debug_putstr("\n"); \
        }

#else


static inline void debug_putstr(const char *s) { }

Contributors

PersonTokensPropCommitsCommitProp
Joe Millenbach11100.00%1100.00%
Total11100.00%1100.00%


static inline void debug_puthex(const char *s) { }

Contributors

PersonTokensPropCommitsCommitProp
Kees Cook11100.00%1100.00%
Total11100.00%1100.00%

#define debug_putaddr(x) /* */ #endif #if CONFIG_EARLY_PRINTK || CONFIG_RANDOMIZE_BASE /* cmdline.c */ int cmdline_find_option(const char *option, char *buffer, int bufsize); int cmdline_find_option_bool(const char *option); #endif #if CONFIG_RANDOMIZE_BASE /* kaslr.c */ void choose_random_location(unsigned long input, unsigned long input_size, unsigned long *output, unsigned long output_size, unsigned long *virt_addr); /* cpuflags.c */ bool has_cpuflag(int flag); #else
static inline void choose_random_location(unsigned long input, unsigned long input_size, unsigned long *output, unsigned long output_size, unsigned long *virt_addr) { /* No change from existing output location. */ *virt_addr = *output; }

Contributors

PersonTokensPropCommitsCommitProp
Kees Cook1850.00%250.00%
Baoquan He1541.67%125.00%
Borislav Petkov38.33%125.00%
Total36100.00%4100.00%

#endif #ifdef CONFIG_X86_64 void initialize_identity_maps(void); void add_identity_map(unsigned long start, unsigned long size); void finalize_identity_maps(void); extern unsigned char _pgtable[]; #else
static inline void initialize_identity_maps(void) { }

Contributors

PersonTokensPropCommitsCommitProp
Kees Cook8100.00%1100.00%
Total8100.00%1100.00%


static inline void add_identity_map(unsigned long start, unsigned long size) { }

Contributors

PersonTokensPropCommitsCommitProp
Kees Cook14100.00%1100.00%
Total14100.00%1100.00%


static inline void finalize_identity_maps(void) { }

Contributors

PersonTokensPropCommitsCommitProp
Kees Cook8100.00%1100.00%
Total8100.00%1100.00%

#endif #ifdef CONFIG_EARLY_PRINTK /* early_serial_console.c */ extern int early_serial_base; void console_init(void); #else static const int early_serial_base;
static inline void console_init(void) { }

Contributors

PersonTokensPropCommitsCommitProp
Joe Millenbach8100.00%1100.00%
Total8100.00%1100.00%

#endif #endif

Overall Contributors

PersonTokensPropCommitsCommitProp
Kees Cook19652.27%945.00%
Yinghai Lu9224.53%15.00%
Joe Millenbach4411.73%315.00%
Baoquan He246.40%15.00%
H. Peter Anvin61.60%210.00%
Borislav Petkov51.33%15.00%
Ingo Molnar41.07%15.00%
Andrey Ryabinin30.80%15.00%
Gokul Caushik10.27%15.00%
Total375100.00%20100.00%
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