On Tue, Dec 11, 2018 at 10:52 PM Qian Cai <cai@xxxxxx> wrote: > On Tue, 2018-12-11 at 22:43 +0100, Arnd Bergmann wrote: > > On Tue, Dec 11, 2018 at 6:18 PM Qian Cai <cai@xxxxxx> wrote: > I am not too keen to do the version-check considering some LTS versions could > just back-port those patches and the render the version-check incorrectly. I'm not following what the problem is. Do you mean distro versions gcc with the compiler bugfix, or LTS kernel versions? For backported kernel fixes, this doesn't seem to be any different from other kernel changes that might be incorrect, but a straight backport of that kernel patch should still do the right thing in older kernels, and set the frame size higher for old compilers but not new ones. Arnd