gh0s7/mckernel
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

add host PTE cleaning to execve(). refs #377

Browse Source 
This removes a cause of LTP gethostid01's wrong behavior.
This commit is contained in:
NAKAMURA Gou
2015-03-10 17:43:14 +09:00
parent 1f8265efbc
commit fa923da0e3
1 changed files with 29 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
kernel/syscall.c
View File

@ -1672,6 +1672,34 @@ found:
return error;
}
static void munmap_all(void)
{
struct process *proc = cpu_local_var(current);
struct process_vm *vm = proc->vm;
struct vm_range *range;
struct vm_range *next;
void *addr;
size_t size;
int error;
ihk_mc_spinlock_lock_noirq(&vm->memory_range_lock);
list_for_each_entry_safe(range, next, &vm->vm_range_list, list) {
addr = (void *)range->start;
size = range->end - range->start;
error = do_munmap(addr, size);
if (error) {
kprintf("munmap_all():do_munmap(%p,%lx) failed. %d\n",
addr, size, error);
/* through */
}
}
ihk_mc_spinlock_unlock_noirq(&vm->memory_range_lock);
/* free vm_ranges which do_munmap() failed to remove. */
free_process_memory_ranges(proc);
return;
} /* munmap_all() */
SYSCALL_DECLARE(execve)
{
int error;
@ -1749,7 +1777,7 @@ SYSCALL_DECLARE(execve)
}
/* Unmap all memory areas of the process, userspace will be gone */
free_process_memory_ranges(cpu_local_var(current));
munmap_all();
ihk_mc_init_user_process(&cpu_local_var(current)->ctx,
&cpu_local_var(current)->uctx,