On Fri, Dec 10, 2021 at 5:28 AM Borislav Petkov bp@alien8.de 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