Re: [PATCH v2 9/9] change the relocations behavior for kaslr on x86_64

[Yinghai Lu]

On Mon, Mar 2, 2015 at 6:58 AM, Baoquan He <bhe@xxxxxxxxxx> wrote:

> @@ -455,17 +455,16 @@ unsigned char *choose_kernel_location(struct boot_params *params,
>                        output_size);

you forgot to change

        /* Record the various known unsafe memory ranges. */
        mem_avoid_init((unsigned long)input, input_size,
                       (unsigned long)output, init_size);

to

        /* Record the various known unsafe memory ranges. */
        mem_avoid_init((unsigned long)input, input_size,
                       (unsigned long)*output, init_size);

>
>         /* Walk e820 and find a random address. */
> -       random = find_random_addr(choice, output_size);
> -       if (!random) {
> +       random = find_random_phy_addr((unsigned long)*output, output_size);
> +       if (!random)
>                 debug_putstr("KASLR could not find suitable E820 region...\n");
> -               goto out;
> -       }
> +       else
> +               *output = (unsigned char*)random;
--
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