diff options
Diffstat (limited to 'arch/um/kernel')
| -rw-r--r-- | arch/um/kernel/exec.c | 2 | ||||
| -rw-r--r-- | arch/um/kernel/um_arch.c | 16 |
2 files changed, 15 insertions, 3 deletions
diff --git a/arch/um/kernel/exec.c b/arch/um/kernel/exec.c index 76a62c0cb2b..f5d7f4569ba 100644 --- a/arch/um/kernel/exec.c +++ b/arch/um/kernel/exec.c @@ -25,7 +25,7 @@ void flush_thread(void) ret = unmap(¤t->mm->context.id, 0, STUB_START, 0, &data); ret = ret || unmap(¤t->mm->context.id, STUB_END, - TASK_SIZE - STUB_END, 1, &data); + host_task_size - STUB_END, 1, &data); if (ret) { printk(KERN_ERR "flush_thread - clearing address space failed, " "err = %d\n", ret); diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c index 468aba990db..a6c1dd1cf5a 100644 --- a/arch/um/kernel/um_arch.c +++ b/arch/um/kernel/um_arch.c @@ -241,6 +241,11 @@ static struct notifier_block panic_exit_notifier = { }; /* Set during early boot */ +unsigned long task_size; +EXPORT_SYMBOL(task_size); + +unsigned long host_task_size; + unsigned long brk_start; unsigned long end_iomem; EXPORT_SYMBOL(end_iomem); @@ -267,6 +272,13 @@ int __init linux_main(int argc, char **argv) if (have_root == 0) add_arg(DEFAULT_COMMAND_LINE); + host_task_size = os_get_task_size(); + /* + * TASK_SIZE needs to be PGDIR_SIZE aligned or else exit_mmap craps + * out + */ + task_size = host_task_size & PGDIR_MASK; + /* OS sanity checks that need to happen before the kernel runs */ os_early_checks(); @@ -303,7 +315,7 @@ int __init linux_main(int argc, char **argv) highmem = 0; iomem_size = (iomem_size + PAGE_SIZE - 1) & PAGE_MASK; - max_physmem = CONFIG_TOP_ADDR - uml_physmem - iomem_size - MIN_VMALLOC; + max_physmem = TASK_SIZE - uml_physmem - iomem_size - MIN_VMALLOC; /* * Zones have to begin on a 1 << MAX_ORDER page boundary, @@ -335,7 +347,7 @@ int __init linux_main(int argc, char **argv) } virtmem_size = physmem_size; - avail = CONFIG_TOP_ADDR - start_vm; + avail = TASK_SIZE - start_vm; if (physmem_size > avail) virtmem_size = avail; end_vm = start_vm + virtmem_size; |