On Fri, Dec 10, 2021 at 5:28 AM Borislav Petkov <bp@xxxxxxxxx> wrote: > > On Thu, Dec 09, 2021 at 05:37:42PM +0100, Borislav Petkov wrote: > > Whatever we do, it needs to be tested by all folks on Cc who already > > reported regressions, i.e., Anjaneya, Hugh, John and Patrick. > > Ok, Mike is busy so here are some patches for testing: > > https://git.kernel.org/pub/scm/linux/kernel/git/bp/bp.git/log/?h=rc4-boot > > I'd appreciate it if folks who reported an issue, verify those. > > The first two are reverts which should address the issues with mem= > folks have reported. And the last one should address Anjaneya's issue. I applied the two revert patches to 5.15.7 (the last one won't apply so I skipped it) and the resulting x86 32-bit kernel boots fine here on the Thinkpad X1E that was having issues previously. Then I tested an unpatched 5.16-rc4, which (as expected) got the boot hang on the affected machine. Applied the three patches, and the resulting kernel boots fine. Take care, Pat