On 24 January 2018 at 14:15, Michael Fothergill < michael.fotherg...@gmail.com> wrote:
> > > On 24 January 2018 at 14:11, Vincent Lefevre <vinc...@vinc17.net> wrote: > >> On 2018-01-24 14:44:18 +0100, Sven Hartge wrote: >> > Michael Fothergill <michael.fotherg...@gmail.com> wrote: >> > > On 24 January 2018 at 12:58, Sven Hartge <s...@svenhartge.de> wrote: >> > >> > >> Michael Fothergill <michael.fotherg...@gmail.com> wrote: >> > >> > >> > The link within the above one: >> > >>> https://gcc.gnu.org/ml/gcc/2018-01/msg00148.html >> > >>> also has a link to the ftp download for the release candidate >> version of >> > >>> gcc 7.3 ie 7.3.0rc1 which does actually work for spectre and >> retpoline. >> > >> > >> Debian Sid got gcc-7.3.0rc2 last night, the package is still named >> gcc-7 >> > >> (7.2.0-20) though. >> > >> > > Does that mean that if you upgrade to sid and installed gcc 7.2.0 you >> > > would actually get 7.3.0rc2 in practice? >> > >> > Unless I interpret the changelog wrong: yes. >> > I have found a kernel image file here: https://packages.debian.org/experimental/linux-image-4.15.0-rc8-amd64 I think this will likely work OK with KPTI and retpoline. It's in debian experimental. If you can be sid and experimental together then I guess you can have gcc 7.3 rc1 or 2 (or whatever it is) installed and then install the image as a kernel upgrade not a kernel compilation: Something like this: # cat >> /etc/apt/preferences << EOF Package: * Pin: release o=Debian,a=experimental Pin-Priority: 102 EOF # apt-cache policy # shows/verifies the current preferences # echo "deb http://deb.debian.org/debian experimental main" >> /etc/apt/sources.list # apt-get update # apt-get -t experimental install linux-image-3.10-rc5-686-pae Except here you would do: # apt-get -t experimental install linux-image-4.15.0-rc8-amd64 Then I would have thought KPTI and retpoline would be installed in a relatively painless way if you don't mind running as sid. Cheers MF > >> But the changelogs don't mention anything about Spectre and retpoline. >> > > It's OK. As long as you really do end up installing gcc 7.3.0 rc2 we > know it can handle the compilation of kernel 4.14.14 correctly to > make the KPTI and retpoline patches work........... > > So the changelog doesn't matter. > > Cheers > > MF > > > >> >> -- >> Vincent Lefèvre <vinc...@vinc17.net> - Web: <https://www.vinc17.net/> >> 100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/> >> Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon) >> >> >
