On Tue, 2018-02-06 at 11:02 -0800, Greg Kroah-Hartman wrote: > . > > > > David > > I believe I got the patch(es) you mention in in the stable 4.15.1 kernel: > > > > Pull x86/pti updates from Thomas Gleixner: "Another set of melted > > spectrum related changes" > > (commit 6304672b7f0a5c010002e63a075160856dc4f88d). > > > > Unfortunately, the symptoms I reported remain on at least the i486 and i686. > > Can you try 4.15.2-rc1? Or how about Linus's kernel tree now? There > was a lot of spectrum patches merged just this week that were not in > 4.15.1.
No, for the 486 it *should* have worked. The interesting commit
is fec9434a12 ("x86/pti: Do not enable PTI on CPUs which are not
vulnerable to Meltdown") which is indeed pulled in with the merge
commit that Matthew mentions.
Matthew, can you show the content of /proc/cpuinfo please? And perhaps
add a printk or two in early_identify_cpu() to work out what's going
on?
Your CPU *should* hit the x86_match_cpu(cpu_no_speculation) case and
not set any of the three bugs, AFAICT.
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