Bug#1099214: linux-source: Carefully use CPUID instruction in Intel machine.

From	Corcodel Marian <corcodel.marian@gmail.com>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#1099214: linux-source: Carefully use CPUID instruction in Intel machine.
Date	2025-03-01 21:40 +0100
Message-ID	<KlBMR-2Uws-5@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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Package: linux-source
Severity: normal
X-Debbugs-Cc: corcodel.marian@gmail.com

Hi, according to the Intel manual 325462-sdm-vol-1-2abcd-3abcd-4-1.pdf page
409, 17.3.9.1 Instruction Based Considerations CPUID and other instructions
instructions will abort transactional execution on any implementation.
Conclusion,  exesive usage just to linux kernel an cat /proc/cpuinfo can result
data loss?
Just ask.


-- System Information:
Debian Release: 12.9
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 6.12.5+ (SMP w/8 CPU threads; PREEMPT)
Kernel taint flags: TAINT_OOT_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages linux-source depends on:
pn  linux-source-6.1  <none>

linux-source recommends no packages.

linux-source suggests no packages.

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Bug#1099214: linux-source: Carefully use CPUID instruction in Intel machine. Corcodel Marian <corcodel.marian@gmail.com> - 2025-03-01 21:40 +0100
  Bug#1099214: Still can avoid this isuue Marian Corcodel <corcodel.marian@gmail.com> - 2025-03-01 22:10 +0100

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