On Thu, 8 Jan 2015 00:49:49 +0100 (CET) Jiri Kosina <jkosina@xxxxxxx> wrote:
> --- a/kernel/livepatch/core.c
> +++ b/kernel/livepatch/core.c
> @@ -911,6 +911,12 @@ static int klp_init(void)
> {
> int ret;
>
> + ret = klp_check_compiler_support();
> + if (ret) {
> + pr_info("Your compiler is too old; turning off.\n");
> + return -EINVAL;
> + }
> +
Looks reasonable. It's a shame we've never figured out a way to do
this at Kconfig-time.
That second #error doing in livepatch.h is a bit odd. It errors out if
anyone includes livepatch.h when CONFIG_LIVE_PATCHING=n. Methinks it
would be saner to change it to
#error include linux/livepatch.h, not asm/livepatch.h
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