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 21:55:48 +0100

 On Thu, Jul 11, 2024 at 08:10:02PM +0000, Patrick Welche wrote:
 >  Looking at the code, I would expect a "lfence" rather than a "cpuid"?
 
 and that is because in tsc_setfunc(struct cpu_info *ci)
 
 ci->ci_feat_val[i] = 0x0 for i in {0,..,7} (X86 CPUID feature bits)
 as are the other entries such as ci_vendor
 
 so ci isn't null, but it points to an empty cpu_info