Hi Ivan,
On 03.01.24 21:48, Ivan Loskutov wrote:
I am trying to run seoul demos from genode-world in qemu. It works on my PC but
doesn't work on my laptop. The VM is getting stuck on booting. Last messages in
the log:
[init -> seoul] VMM: # [ 0.000000] Console: colour dummy device 80x25
[init -> seoul] VMM: # [ 0.000000] printk: console [tty0] enabled
[init -> seoul] VMM: # [ 0.000000] printk: bootconsole [earlyser0] disabled
[init -> seoul] VMM: [1]
[init -> seoul] VMM: unsupported rdmsr 396 at 810186f7
[init -> seoul] VMM: [0]
[init -> seoul] VMM: unsupported wrmsr 2ff0 <-(0:20000000) at ffffffff8101854f
I suspect that it can be related to CPU. On PC I have i5-9600K, on laptop -
i7-1270P.
according to [0] the wrmsr to 0x2ff0 seems to be ADL_UNC_PERF_GLOBAL_CTL, so
indeed is Adlerlake specific.
Unknown wrmsr accesses are handled as fatal and the Seoul VMM with inject a
general protection fault (GP) to the guest.
So, you may try to whitelist the access in _handle_wrmsr_intel [2]. At moment
the functionality of [0] is not supported/emulated.
Cheers,
Alex.
[0]
https://github.com/torvalds/linux/blob/master/arch/x86/events/intel/uncore_snb.c
[1] contrib/seoul/src/app/seoul/model/vcpu.cc
Any ideas on how to fix it? Thanks!
--
Best Regards
Ivan Loskutov
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Alexander Boettcher
Genode Labs
https://www.genodians.org - https://www.genode.org
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