diff options
Diffstat (limited to 'arch/um/kernel/um_arch.c')
| -rw-r--r-- | arch/um/kernel/um_arch.c | 113 |
1 files changed, 4 insertions, 109 deletions
diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c index ecc458fe51b..aa7b067565d 100644 --- a/arch/um/kernel/um_arch.c +++ b/arch/um/kernel/um_arch.c @@ -38,9 +38,7 @@ #include "choose-mode.h" #include "mode_kern.h" #include "mode.h" -#ifdef UML_CONFIG_MODE_SKAS #include "skas.h" -#endif #define DEFAULT_COMMAND_LINE "root=98:0" @@ -132,43 +130,12 @@ unsigned long end_vm; /* Set in uml_ncpus_setup */ int ncpus = 1; -#ifdef CONFIG_CMDLINE_ON_HOST -/* Pointer set in linux_main, the array itself is private to each thread, - * and changed at address space creation time so this poses no concurrency - * problems. - */ -static char *argv1_begin = NULL; -static char *argv1_end = NULL; -#endif - /* Set in early boot */ static int have_root __initdata = 0; /* Set in uml_mem_setup and modified in linux_main */ long long physmem_size = 32 * 1024 * 1024; -void set_cmdline(char *cmd) -{ -#ifdef CONFIG_CMDLINE_ON_HOST - char *umid, *ptr; - - if(CHOOSE_MODE(honeypot, 0)) return; - - umid = get_umid(); - if(*umid != '\0'){ - snprintf(argv1_begin, - (argv1_end - argv1_begin) * sizeof(*ptr), - "(%s) ", umid); - ptr = &argv1_begin[strlen(argv1_begin)]; - } - else ptr = argv1_begin; - - snprintf(ptr, (argv1_end - ptr) * sizeof(*ptr), "[%s]", cmd); - memset(argv1_begin + strlen(argv1_begin), '\0', - argv1_end - argv1_begin - strlen(argv1_begin)); -#endif -} - static char *usage_string = "User Mode Linux v%s\n" " available at http://user-mode-linux.sourceforge.net/\n\n"; @@ -201,13 +168,10 @@ __uml_setup("root=", uml_root_setup, " root=/dev/ubd5\n\n" ); -#ifndef CONFIG_MODE_TT - static int __init no_skas_debug_setup(char *line, int *add) { printf("'debug' is not necessary to gdb UML in skas mode - run \n"); - printf("'gdb linux' and disable CONFIG_CMDLINE_ON_HOST if gdb \n"); - printf("doesn't work as expected\n"); + printf("'gdb linux'"); return 0; } @@ -217,8 +181,6 @@ __uml_setup("debug", no_skas_debug_setup, " this flag is not needed to run gdb on UML in skas mode\n\n" ); -#endif - #ifdef CONFIG_SMP static int __init uml_ncpus_setup(char *line, int *add) { @@ -236,52 +198,6 @@ __uml_setup("ncpus=", uml_ncpus_setup, ); #endif -static int force_tt = 0; - -#if defined(CONFIG_MODE_TT) && defined(CONFIG_MODE_SKAS) -#define DEFAULT_TT 0 - -static int __init mode_tt_setup(char *line, int *add) -{ - force_tt = 1; - return 0; -} - -#else -#ifdef CONFIG_MODE_SKAS - -#define DEFAULT_TT 0 - -static int __init mode_tt_setup(char *line, int *add) -{ - printf("CONFIG_MODE_TT disabled - 'mode=tt' ignored\n"); - return 0; -} - -#else -#ifdef CONFIG_MODE_TT - -#define DEFAULT_TT 1 - -static int __init mode_tt_setup(char *line, int *add) -{ - printf("CONFIG_MODE_SKAS disabled - 'mode=tt' redundant\n"); - return 0; -} - -#endif -#endif -#endif - -__uml_setup("mode=tt", mode_tt_setup, -"mode=tt\n" -" When both CONFIG_MODE_TT and CONFIG_MODE_SKAS are enabled, this option\n" -" forces UML to run in tt (tracing thread) mode. It is not the default\n" -" because it's slower and less secure than skas mode.\n\n" -); - -int mode_tt = DEFAULT_TT; - static int __init Usage(char *line, int *add) { const char **p; @@ -357,29 +273,13 @@ int __init linux_main(int argc, char **argv) add_arg(DEFAULT_COMMAND_LINE); os_early_checks(); - if (force_tt) - clear_can_do_skas(); - mode_tt = force_tt ? 1 : !can_do_skas(); -#ifndef CONFIG_MODE_TT - if (mode_tt) { - /*Since CONFIG_MODE_TT is #undef'ed, force_tt cannot be 1. So, - * can_do_skas() returned 0, and the message is correct. */ - printf("Support for TT mode is disabled, and no SKAS support is present on the host.\n"); - exit(1); - } -#endif -#ifndef CONFIG_MODE_SKAS - mode = "TT"; -#else - /* Show to the user the result of selection */ - if (mode_tt) - mode = "TT"; - else if (proc_mm && ptrace_faultinfo) + can_do_skas(); + + if (proc_mm && ptrace_faultinfo) mode = "SKAS3"; else mode = "SKAS0"; -#endif printf("UML running in %s mode\n", mode); @@ -411,11 +311,6 @@ int __init linux_main(int argc, char **argv) setup_machinename(init_utsname()->machine); -#ifdef CONFIG_CMDLINE_ON_HOST - argv1_begin = argv[1]; - argv1_end = &argv[1][strlen(argv[1])]; -#endif - highmem = 0; iomem_size = (iomem_size + PAGE_SIZE - 1) & PAGE_MASK; max_physmem = get_kmem_end() - uml_physmem - iomem_size - MIN_VMALLOC; |