On Mon, Apr 11, 2016 at 8:03 PM, Kees Cook <keescook@xxxxxxxxxxxx> wrote: > On Mon, Apr 11, 2016 at 1:00 AM, James Morse <james.morse@xxxxxxx> wrote: >> On 06/04/16 20:44, Kees Cook wrote: >>> When building with both CONFIG_HIBERNATION and CONFIG_RANDOMIZE_BASE, >>> one or the other must be chosen at boot-time. Until now, hibernation >>> was selected when no choice was made on the command line. >>> >>> To make the security benefits of kASLR more widely available to end >>> users (since the use of hibernation is becoming more rare and kASLR, >>> already available on x86, will be available on arm64 and MIPS soon), >>> this changes the default to preferring kASLR over hibernation. Users >>> wanting hibernation can turn off kASLR by adding "nokaslr" to the kernel >>> command line. >> >> While hibernate isn't yet merged for arm64, it does work with kASLR in v4.6-rc*, >> it would be a shame to have to choose at boot time, (but that's my problem to >> fix if/when its merged). > > Ah, interesting, so they work together on arm64? (i.e. you've actually > tested a boot loader that provides the seed for kASLR to operate?) Probably the PS3 people can provide us with a good tool to generate a seed that makes hibernation work all the time ;-) https://xkcd.com/221/ Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
