Re: port-amd64/58410: x86_patch() panic with core ultra processor

[Patrick Welche <prlw1%welche.eu@localhost>]

The following reply was made to PR port-amd64/58410; it has been noted by GNATS.

From: Patrick Welche <prlw1%welche.eu@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: 
Subject: Re: port-amd64/58410: x86_patch() panic with core ultra processor
Date: Thu, 11 Jul 2024 21:06:41 +0100

 I see you were probably referring to port-amd64/54489, but unfortuately
 I don't have that option.
 
 Now I no longer see the panic, and can not enter ddb, so no dmesg. I just
 get a hang interestingly after:
 
 ioapic0 at mainbus0 apid 2: pa 0xfec00000, virtual wire mode, version 0x20, 120pins
 cpu 0 at mainbus0 apid 16
 cpu0: Use cpuid to serialize rdtsc
 *** hang ***
 
 Looking at the code, I would expect a "lfence" rather than a "cpuid"?