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TO RESET: add debug instruments, map Linux areas for tofu

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Change-Id: I09880cad3b87182cb663d414041254817c254759
This commit is contained in:
Masamichi Takagi
2020-06-15 13:27:26 +09:00
parent 25943634e9
commit 1cf0bd5a78
6 changed files with 148 additions and 5 deletions
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32
kernel/mem.c
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@ -954,6 +954,9 @@ static void query_free_mem_interrupt_handler(void *priv)
}
kprintf("McKernel free pages in total: %d\n", pages);
#ifdef ENABLE_FUGAKU_HACKS
panic("PANIC");
#endif
if (find_command_line("memdebug")) {
extern void kmalloc_memcheck(void);
@ -1346,7 +1349,13 @@ static void unhandled_page_fault(struct thread *thread, void *fault_addr,
if (!(reason & PF_USER)) {
cpu_local_var(kernel_mode_pf_regs) = regs;
#ifndef ENABLE_FUGAKU_HACKS
panic("panic: kernel mode PF");
#else
kprintf("panic: kernel mode PF");
for (;;) cpu_pause();
//panic("panic: kernel mode PF");
#endif
}
//dkprintf("now dump a core file\n");
@ -1382,6 +1391,20 @@ static void page_fault_handler(void *fault_addr, uint64_t reason, void *regs)
__FUNCTION__, fault_addr, reason, regs);
preempt_disable();
#ifdef ENABLE_FUGAKU_HACKS
++cpu_local_var(in_page_fault);
if (cpu_local_var(in_page_fault) > 1) {
kprintf("%s: PF in PF??\n", __func__);
cpu_disable_interrupt();
if (!(reason & PF_USER)) {
cpu_local_var(kernel_mode_pf_regs) = regs;
panic("panic: kernel mode PF in PF");
}
while (1) {
panic("PANIC");
}
}
#endif
cpu_enable_interrupt();
@ -1451,9 +1474,9 @@ out_linux:
preempt_enable();
#ifdef ENABLE_FUGAKU_DEBUG
kprintf("%s: sending SIGSTOP to TID: %d\n", __func__, thread->tid);
do_kill(thread, thread->proc->pid, thread->tid, SIGSTOP, NULL, 0);
goto out;
//kprintf("%s: sending SIGSTOP to TID: %d\n", __func__, thread->tid);
//do_kill(thread, thread->proc->pid, thread->tid, SIGSTOP, NULL, 0);
//goto out;
#endif
memset(&info, '\0', sizeof info);
@ -1484,6 +1507,9 @@ out_linux:
out_ok:
#endif
error = 0;
#ifdef ENABLE_FUGAKU_HACKS
--cpu_local_var(in_page_fault);
#endif
preempt_enable();
out:
dkprintf("%s: addr: %p, reason: %lx, regs: %p -> error: %d\n",