linux-kernel - [patch 0/2] x86/cpu/amd: Fixup the topology rework fallout

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Date: Wed, 10 Apr 2024 21:45:25 +0200 (CEST)
From: Thomas Gleixner <tglx@...utronix.de>
To: LKML <linux-kernel@...r.kernel.org>
Cc: Laura Nao <laura.nao@...labora.com>,
 x86@...nel.org,
 kernel@...labora.com,
 regressions@...mhuis.info,
 regressions@...ts.linux.dev
Subject: [patch 0/2] x86/cpu/amd: Fixup the topology rework fallout

Testing at Collabora unearthed two issues in the new AMD topology parser
code:

  1) The CPUID 0x80000008 parser initializes the wrong topology domain
     level.

  2) The NODEID_MSR parser uses bitfields in a union wrongly which results
     in reading out the wrong value and finally in a division by zero.

Many thanks to Laura for helping to debug this issue.

       tglx