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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/27201] Consider disabling x86-64-v2 support check
Date: Thu, 21 Jan 2021 15:41:13 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D27201

--- Comment #20 from Florian Weimer <fweimer at redhat dot com> ---
(In reply to H.J. Lu from comment #18)
> flags		: fpu de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pse36
> clflush mmx fxsr sse sse2 syscall nx lm rep_good nopl xtopology cpuid
> tsc_known_freq pni cx16 x2apic hypervisor lahf_lm cpuid_fault pti
> bugs		: cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swa=
pgs

Those look like as expected. Now install glibc from here:

https://koji.fedoraproject.org/koji/buildinfo?buildID=3D1669316

It has the x86-64-v2 check and won't boot.

This earlier build requires x86-64-v2 as well (due to its build flags), but
will run because the x86-64-v2 instructions do not trap:

https://koji.fedoraproject.org/koji/buildinfo?buildID=3D1666794

--=20
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