/*
* Check for command-line options that affect what MMU_init will do.
*/
void __init MMU_setup(void)
{
/* Check for nobats option (used in mapin_ram). */
if (strstr(boot_command_line, "nobats")) {
__map_without_bats = 1;
}
if (strstr(boot_command_line, "noltlbs")) {
__map_without_ltlbs = 1;
}
if (debug_pagealloc_enabled()) {
__map_without_bats = 1;
__map_without_ltlbs = 1;
}
}
static void init_page_poisoning(void)
{
/*
* page poisoning is debug page alloc for some arches. If either
* of those options are enabled, enable poisoning
*/
if (!IS_ENABLED(CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC)) {
if (!want_page_poisoning && !debug_pagealloc_enabled())
return;
} else {
if (!want_page_poisoning)
return;
}
__page_poisoning_enabled = true;
}
/*
* Check for command-line options that affect what MMU_init will do.
*/
static void __init MMU_setup(void)
{
/* Check for nobats option (used in mapin_ram). */
if (strstr(boot_command_line, "nobats")) {
__map_without_bats = 1;
}
if (strstr(boot_command_line, "noltlbs")) {
__map_without_ltlbs = 1;
}
if (debug_pagealloc_enabled()) {
__map_without_bats = 1;
__map_without_ltlbs = 1;
}
if (strict_kernel_rwx_enabled() && !IS_ENABLED(CONFIG_PPC_8xx))
__map_without_ltlbs = 1;
}
static int alsa_card_pcsp_init(struct device *dev)
{
int err;
err = snd_card_pcsp_probe(0, dev);
if (err) {
printk(KERN_ERR "PC-Speaker initialization failed.\n");
return err;
}
/* Well, CONFIG_DEBUG_PAGEALLOC makes the sound horrible. Lets alert */
if (debug_pagealloc_enabled()) {
printk(KERN_WARNING "PCSP: CONFIG_DEBUG_PAGEALLOC is enabled, "
"which may make the sound noisy.\n");
}
return 0;
}
int __die(const char *str, struct pt_regs *regs, long err)
{
#ifdef CONFIG_X86_32
unsigned short ss;
unsigned long sp;
#endif
printk(KERN_DEFAULT
"%s: %04lx [#%d]%s%s%s%s\n", str, err & 0xffff, ++die_counter,
IS_ENABLED(CONFIG_PREEMPT) ? " PREEMPT" : "",
IS_ENABLED(CONFIG_SMP) ? " SMP" : "",
debug_pagealloc_enabled() ? " DEBUG_PAGEALLOC" : "",
IS_ENABLED(CONFIG_KASAN) ? " KASAN" : "");
if (notify_die(DIE_OOPS, str, regs, err,
current->thread.trap_nr, SIGSEGV) == NOTIFY_STOP)
return 1;
print_modules();
show_regs(regs);
#ifdef CONFIG_X86_32
if (user_mode(regs)) {
sp = regs->sp;
ss = regs->ss & 0xffff;
} else {
sp = kernel_stack_pointer(regs);
savesegment(ss, ss);
}
printk(KERN_EMERG "EIP: [<%08lx>] ", regs->ip);
print_symbol("%s", regs->ip);
printk(" SS:ESP %04x:%08lx\n", ss, sp);
#else
/* Executive summary in case the oops scrolled away */
printk(KERN_ALERT "RIP ");
printk_address(regs->ip);
printk(" RSP <%016lx>\n", regs->sp);
#endif
return 0;
}
