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make munmap free physical pages, and one correction for aligned mmap in syscall.c (extend_process_region is called with memory-region start-address which is aligned (map_end_aligned), instead of tail-address of current-region (region->map_end)) for aligned mmap (in syscall.c)

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This commit is contained in:
Masamichi Takagi m-takagi@ab.jp.nec.com
2012-10-30 21:32:49 +09:00
parent 50431b7584
commit e7317cca98
5 changed files with 31 additions and 13 deletions
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14
kernel/syscall.c
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@ -411,7 +411,7 @@ SYSCALL_DECLARE(mmap)
region->map_end =
extend_process_region(cpu_local_var(current),
region->map_start,
region->map_end,
map_end_aligned,
s + len);
aal_mc_spinlock_unlock(&cpu_local_var(current)->vm->memory_range_lock, flags);
// kprintf("syscall.c,mmap,map_end=%lx,s+len=%lx\n", region->map_end, s+len);
@ -457,13 +457,17 @@ SYSCALL_DECLARE(mmap)
SYSCALL_DECLARE(munmap)
{
unsigned long address, len;
unsigned long va, pa, len;
int r;
address = aal_mc_syscall_arg0(ctx);
va = aal_mc_syscall_arg0(ctx);
len = aal_mc_syscall_arg1(ctx);
return remove_process_region(cpu_local_var(current), address,
address + len);
if(aal_mc_pt_virt_to_phys(cpu_local_var(current)->vm->page_table, (void *)va, &pa)) {
return -EFAULT;
}
r = remove_process_region(cpu_local_var(current), va, va + len, pa);
return r;
}
SYSCALL_DECLARE(mprotect)