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* [Bug dynamic-link/27346] New: PTWRITE feature check is missing
@ 2021-02-04 18:38 hjl.tools at gmail dot com
2021-02-04 19:09 ` [Bug dynamic-link/27346] x86: " fweimer at redhat dot com
2021-03-18 15:05 ` hjl.tools at gmail dot com
0 siblings, 2 replies; 3+ messages in thread
From: hjl.tools at gmail dot com @ 2021-02-04 18:38 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=27346
Bug ID: 27346
Summary: PTWRITE feature check is missing
Product: glibc
Version: 2.34
Status: NEW
Severity: normal
Priority: P2
Component: dynamic-link
Assignee: unassigned at sourceware dot org
Reporter: hjl.tools at gmail dot com
CC: lili.cui at intel dot com
Target Milestone: ---
PTWRITE needs to check EBX from CPUID leaf 0x14.
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* [Bug dynamic-link/27346] x86: PTWRITE feature check is missing
2021-02-04 18:38 [Bug dynamic-link/27346] New: PTWRITE feature check is missing hjl.tools at gmail dot com
@ 2021-02-04 19:09 ` fweimer at redhat dot com
2021-03-18 15:05 ` hjl.tools at gmail dot com
1 sibling, 0 replies; 3+ messages in thread
From: fweimer at redhat dot com @ 2021-02-04 19:09 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=27346
Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|PTWRITE feature check is |x86: PTWRITE feature check
|missing |is missing
Flags| |security-
CC| |fweimer at redhat dot com
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* [Bug dynamic-link/27346] x86: PTWRITE feature check is missing
2021-02-04 18:38 [Bug dynamic-link/27346] New: PTWRITE feature check is missing hjl.tools at gmail dot com
2021-02-04 19:09 ` [Bug dynamic-link/27346] x86: " fweimer at redhat dot com
@ 2021-03-18 15:05 ` hjl.tools at gmail dot com
1 sibling, 0 replies; 3+ messages in thread
From: hjl.tools at gmail dot com @ 2021-03-18 15:05 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=27346
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Target Milestone|--- |2.34
Resolution|--- |FIXED
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
Fixed on master by
commit 5ab25c88758810269607a066fcac399e29863510
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Thu Feb 4 10:39:34 2021 -0800
x86: Add PTWRITE feature detection [BZ #27346]
1. Add CPUID_INDEX_14_ECX_0 for CPUID leaf 0x14 to detect PTWRITE feature
in EBX of CPUID leaf 0x14 with ECX == 0.
2. Add PTWRITE detection to CPU feature tests.
3. Add 2 static CPU feature tests.
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2021-02-04 18:38 [Bug dynamic-link/27346] New: PTWRITE feature check is missing hjl.tools at gmail dot com
2021-02-04 19:09 ` [Bug dynamic-link/27346] x86: " fweimer at redhat dot com
2021-03-18 15:05 ` hjl.tools at gmail dot com
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