On Tue 2025-11-25 14:24:55, Derek Barbosa wrote:
On Thu, Nov 13, 2025 at 02:15:09PM -0500, Derek Barbosa wrote:
Hi John,
On Thu, Nov 13, 2025 at 06:12:57PM +0106, John Ogness wrote:
I assume the problem you are seeing is with the PREEMPT_RT patches applied (i.e. with the 8250-NBCON included). If that is the case, note that recent versions of the 8250 driver introduce its own irq_work that is also problematic. I am currently reworking the 8250-NBCON series so that it does not introduce irq_work.
Hi John,
Apologies for the late reply here. Just now got some results in.
No problem at all.
Testing this patch series atop of Linus' tree resolves the suspend issue seen on these large CPU workstation systems.
Thanks a lot for checking the patches. It is great to know that it resolved the problem.
I see this has already landed in the maintainers tree at printk/linux.git.
Yes, I wanted to have it in linux-next in time before the merge window opens for 6.19 (likely next week).
Best Regards, Petr