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* [Bug string/28744] New: A64FX string functions are selected without SVE HWCAP
@ 2022-01-03 21:59 fweimer at redhat dot com
2022-01-03 22:00 ` [Bug string/28744] " fweimer at redhat dot com
` (6 more replies)
0 siblings, 7 replies; 8+ messages in thread
From: fweimer at redhat dot com @ 2022-01-03 21:59 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=28744
Bug ID: 28744
Summary: A64FX string functions are selected without SVE HWCAP
Product: glibc
Version: 2.35
Status: NEW
Severity: normal
Priority: P2
Component: string
Assignee: unassigned at sourceware dot org
Reporter: fweimer at redhat dot com
CC: wdijkstr at arm dot com
Target Milestone: ---
The IFUNC selector for the A64FX-optimized string functions uses them once the
implementation identifies itself as A64FX. It does not check for SVE
hypervisor/kernel support. Without these, the string functions cannot work. The
generic code should be used instead, unless there are compelling reasons not to
support this configuration.
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* [Bug string/28744] A64FX string functions are selected without SVE HWCAP
2022-01-03 21:59 [Bug string/28744] New: A64FX string functions are selected without SVE HWCAP fweimer at redhat dot com
@ 2022-01-03 22:00 ` fweimer at redhat dot com
2022-01-04 15:38 ` wdijkstr at arm dot com
` (5 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: fweimer at redhat dot com @ 2022-01-03 22:00 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=28744
Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Build| |aarch64
CC| |fweimer at redhat dot com
Flags| |security-
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* [Bug string/28744] A64FX string functions are selected without SVE HWCAP
2022-01-03 21:59 [Bug string/28744] New: A64FX string functions are selected without SVE HWCAP fweimer at redhat dot com
2022-01-03 22:00 ` [Bug string/28744] " fweimer at redhat dot com
@ 2022-01-04 15:38 ` wdijkstr at arm dot com
2022-01-06 14:37 ` cvs-commit at gcc dot gnu.org
` (4 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: wdijkstr at arm dot com @ 2022-01-04 15:38 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=28744
--- Comment #1 from Wilco <wdijkstr at arm dot com> ---
There wouldn't be any point in disabling SVE on A64FX! However it's easy to add
the check, I'll post a patch.
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* [Bug string/28744] A64FX string functions are selected without SVE HWCAP
2022-01-03 21:59 [Bug string/28744] New: A64FX string functions are selected without SVE HWCAP fweimer at redhat dot com
2022-01-03 22:00 ` [Bug string/28744] " fweimer at redhat dot com
2022-01-04 15:38 ` wdijkstr at arm dot com
@ 2022-01-06 14:37 ` cvs-commit at gcc dot gnu.org
2022-01-06 14:46 ` wdijkstr at arm dot com
` (3 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2022-01-06 14:37 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=28744
--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Wilco Dijkstra <wilco@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=e5fa62b8db546f8792ec9e5c61e6419f4f8e3f4d
commit e5fa62b8db546f8792ec9e5c61e6419f4f8e3f4d
Author: Wilco Dijkstra <wdijkstr@arm.com>
Date: Thu Jan 6 14:36:28 2022 +0000
AArch64: Check for SVE in ifuncs [BZ #28744]
Add a check for SVE in the A64FX ifuncs for memcpy, memset and memmove.
This fixes BZ #28744.
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* [Bug string/28744] A64FX string functions are selected without SVE HWCAP
2022-01-03 21:59 [Bug string/28744] New: A64FX string functions are selected without SVE HWCAP fweimer at redhat dot com
` (2 preceding siblings ...)
2022-01-06 14:37 ` cvs-commit at gcc dot gnu.org
@ 2022-01-06 14:46 ` wdijkstr at arm dot com
2022-01-06 18:55 ` wdijkstr at arm dot com
` (2 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: wdijkstr at arm dot com @ 2022-01-06 14:46 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=28744
--- Comment #3 from Wilco <wdijkstr at arm dot com> ---
Fixed (this can be closed but I don't seem to have the right permissions...)
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* [Bug string/28744] A64FX string functions are selected without SVE HWCAP
2022-01-03 21:59 [Bug string/28744] New: A64FX string functions are selected without SVE HWCAP fweimer at redhat dot com
` (3 preceding siblings ...)
2022-01-06 14:46 ` wdijkstr at arm dot com
@ 2022-01-06 18:55 ` wdijkstr at arm dot com
2022-01-06 18:56 ` wdijkstr at arm dot com
2022-01-07 9:17 ` cvs-commit at gcc dot gnu.org
6 siblings, 0 replies; 8+ messages in thread
From: wdijkstr at arm dot com @ 2022-01-06 18:55 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=28744
Wilco <wdijkstr at arm dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at sourceware dot org |wdijkstr at arm dot com
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* [Bug string/28744] A64FX string functions are selected without SVE HWCAP
2022-01-03 21:59 [Bug string/28744] New: A64FX string functions are selected without SVE HWCAP fweimer at redhat dot com
` (4 preceding siblings ...)
2022-01-06 18:55 ` wdijkstr at arm dot com
@ 2022-01-06 18:56 ` wdijkstr at arm dot com
2022-01-07 9:17 ` cvs-commit at gcc dot gnu.org
6 siblings, 0 replies; 8+ messages in thread
From: wdijkstr at arm dot com @ 2022-01-06 18:56 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=28744
Wilco <wdijkstr at arm dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Wilco <wdijkstr at arm dot com> ---
Fixed
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* [Bug string/28744] A64FX string functions are selected without SVE HWCAP
2022-01-03 21:59 [Bug string/28744] New: A64FX string functions are selected without SVE HWCAP fweimer at redhat dot com
` (5 preceding siblings ...)
2022-01-06 18:56 ` wdijkstr at arm dot com
@ 2022-01-07 9:17 ` cvs-commit at gcc dot gnu.org
6 siblings, 0 replies; 8+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2022-01-07 9:17 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=28744
--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.34/master branch has been updated by Florian Weimer
<fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=217b84127b3a6590afcc7e198e6c3f665935e8f4
commit 217b84127b3a6590afcc7e198e6c3f665935e8f4
Author: Wilco Dijkstra <wdijkstr@arm.com>
Date: Thu Jan 6 14:36:28 2022 +0000
AArch64: Check for SVE in ifuncs [BZ #28744]
Add a check for SVE in the A64FX ifuncs for memcpy, memset and memmove.
This fixes BZ #28744.
(cherry picked from commit e5fa62b8db546f8792ec9e5c61e6419f4f8e3f4d)
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2022-01-03 21:59 [Bug string/28744] New: A64FX string functions are selected without SVE HWCAP fweimer at redhat dot com
2022-01-03 22:00 ` [Bug string/28744] " fweimer at redhat dot com
2022-01-04 15:38 ` wdijkstr at arm dot com
2022-01-06 14:37 ` cvs-commit at gcc dot gnu.org
2022-01-06 14:46 ` wdijkstr at arm dot com
2022-01-06 18:55 ` wdijkstr at arm dot com
2022-01-06 18:56 ` wdijkstr at arm dot com
2022-01-07 9:17 ` cvs-commit at gcc dot gnu.org
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