Shaohua Li <[email protected]> wrote:
>
> +static int save_arch_mem(void)
> +{
> + void *kaddr;
> + struct arch_saveable_page *tmp = arch_pages;
> +
> + pr_debug("swsusp: Saving arch specific memory");
> + while (tmp) {
> + tmp->data = (void *)get_zeroed_page(GFP_ATOMIC);
There's no need to zero the page here.
> + if (!tmp->data)
> + return -ENOMEM;
> + /* arch pages might haven't a 'struct page' */
> + kaddr = kmap_atomic_pfn(tmp->pfn, KM_PTE0);
> + memcpy(tmp->data, kaddr, PAGE_SIZE);
> + kunmap_atomic(kaddr, KM_PTE0);
Why was KM_PTE0 chosen here?
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