Re: Meltdown / Spectre

[Mark H Weaver]

Leo Famulari <address@hidden> writes:

> On Fri, Jan 19, 2018 at 05:06:25PM -0500, Mark H Weaver wrote:
>> There's now a GCC 7.3 release candidate that apparently contains the
>> necessary compiler support to allow linux-libre-4.14.14 to use the
>> retpoline technique internally.
>> 
>>   https://gcc.gnu.org/ml/gcc/2018-01/msg00115.html
>> 
>> They hope to release GCC 7.3 on January 24th.  It would be good to
>> promptly add GCC 7.3 to Guix when its released, and to start using it to
>> build linux-libre-4.14 on selected systems: x86_64 and possibly aarch64.
>> 
>> I'd prefer to continue using our default compiler to build linux-libre
>> on systems where GCC 7.3 is not known to help with this issue.
>
> Thanks for looking into this, Mark. Your plan sounds good to me.

FYI, in another thread, I recently posted preliminary patches to add the
GCC 7.3 release candidate as a Guix package, and to use it to build
linux-libre on x86_64 and i686 systems:

  https://lists.gnu.org/archive/html/guix-devel/2018-01/msg00292.html

      Mark