Hi Sasha, [+Suzuki] On Tue, Aug 06, 2019 at 05:29:04PM -0400, Sasha Levin wrote: > On Mon, Aug 05, 2019 at 06:13:06PM +0100, Will Deacon wrote: > > These two patches are backports for 4.4.y stable kernels after one of > > them failed to apply: > > > > https://lkml.kernel.org/r/156498316752100@xxxxxxxxx > > I took these 2, but note that they have two fixes that are not in 4.4: > > 314d53d297980 arm64: Handle mismatched cache type > 4c4a39dd5fe2d arm64: Fix mismatched cache line size detection > > Will you send a backport for them? 4.4 doesn't handle mismatches for the cache type or the line sizes, and instead taints the kernel with a big splat at boot. If we wanted to backport this, we'd need to pick up more than just the above patches, since we don't have the means to emulate user cache maintenance operations either. Given that the vast majority of systems don't suffer from this problem, I'd be inclined not to try shoe-horning all of this into 4.4, where I think it's more likely introduce other issues. Suzuki, what do you think? Will
