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[Bug libc/24979] sysdeps: dl_platform detection effectively performs "cripple AMD"
- From: "fweimer at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Mon, 09 Sep 2019 07:15:15 +0000
- Subject: [Bug libc/24979] sysdeps: dl_platform detection effectively performs "cripple AMD"
- Auto-submitted: auto-generated
- References: <bug-24979-131@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=24979
Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |fweimer at redhat dot com
Resolution|--- |DUPLICATE
Assignee|unassigned at sourceware dot org |fweimer at redhat dot com
Flags| |security-
--- Comment #2 from Florian Weimer <fweimer at redhat dot com> ---
We really need feedback from AMD for this change, and it has been difficult for
us to talk to engineers there. If you have contacts there, please encourage
them to reach out to Red Hat Engineer Partner Management via their own channels
(or contact me directly). I agree that this situation is unfortunate, and that
AMD customers may not get the best possible performance as the result.
The "haswell" platform subdirectory is somewhat ill-defined, see bug 24080. I
don't think current AMD CPUs implement the ERMS feature, which Intel assumes is
part of the "haswell" definition.
*** This bug has been marked as a duplicate of bug 23249 ***
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