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From: "hjl.tools at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/28033] New: Need to check RTM_ALWAYS_ABORT for RTM
Date: Wed, 30 Jun 2021 17:34:09 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D28033

            Bug ID: 28033
           Summary: Need to check RTM_ALWAYS_ABORT for RTM
           Product: glibc
           Version: 2.34
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
          Assignee: unassigned at sourceware dot org
          Reporter: hjl.tools at gmail dot com
                CC: drepper.fsp at gmail dot com
  Target Milestone: ---
            Target: i386,x86-64

From

https://www.intel.com/content/www/us/en/support/articles/000059422/processo=
rs.html

A new CPUID bit CPUID.07H.0H.EDX[11](RTM_ALWAYS_ABORT) will be enumerated,
which is set to indicate to updated software that the loaded microcode is
forcing RTM abort.

We need to check RTM_ALWAYS_ABORT to verify that if RTM is usable.

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