Dear coreboot folks,
On 2019-12-15 11:54, Paul Menzel wrote: > On the Lenovo T60 (with AMD/ATI graphics) the Linux kernel (4.9, > 4.19, 5.3, 5.4) hangs after starting user space. As SeaBIOS, GRUB, > payloads and FreeDOS work, I tried to limit the number of CPUs, and > booting Linux with `nosmp` gave me a booting system. It worked with > older coreboot versions, so I think it’s a regression. I am able to > reproduce this with coreboot 4.11 and 4.11-422-g1a5c3bb7fa. > > Is somebody else seeing this issue? Maybe on some i945 desktop board, > so it would be easier to bisect? Just as an update, here is the description. > nosmp [SMP] Tells an SMP kernel to act as a UP kernel, > and disable the IO APIC. legacy for "maxcpus=0". So, after seeing some IRC discussion in #coreb...@irc.freenode.net, the tests below were done. System *boots* with one of: 1. maxcpus=0 (equivalent nosmp) 2. maxcpus=1 3. nolapic (with e1000 warning about missing MSI-X System does *not* boot with one of: 1. maxcpus=2 2. noapic But first, it’d be great if other i945 device users could confirm this. Kind regards, Paul
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