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* [Bug dynamic-link/27104] New: The COMMON_CPUID_INDEX_MAX handshake does not work @ 2020-12-22 11:17 hjl.tools at gmail dot com 2020-12-22 11:41 ` [Bug dynamic-link/27104] " hjl.tools at gmail dot com ` (2 more replies) 0 siblings, 3 replies; 4+ messages in thread From: hjl.tools at gmail dot com @ 2020-12-22 11:17 UTC (permalink / raw) To: glibc-bugs https://sourceware.org/bugzilla/show_bug.cgi?id=27104 Bug ID: 27104 Summary: The COMMON_CPUID_INDEX_MAX handshake does not work Product: glibc Version: 2.33 Status: NEW Severity: normal Priority: P2 Component: dynamic-link Assignee: unassigned at sourceware dot org Reporter: hjl.tools at gmail dot com Target Milestone: --- Target: i386,x86-64 __x86_get_cpu_features returns NULL if its argument is too large. This effectively disables *all* feature bits, not just those beyond COMMON_CPUID_INDEX_MAX. This means that if you build with a header that is too new, an application may fail due to the lack of detected features when running on an older glibc version. Ideally, only the newly added CPU features would be detected as missing in this scenario. Simply recompiling an application with a newer header should not result in any detection changes. -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug dynamic-link/27104] The COMMON_CPUID_INDEX_MAX handshake does not work 2020-12-22 11:17 [Bug dynamic-link/27104] New: The COMMON_CPUID_INDEX_MAX handshake does not work hjl.tools at gmail dot com @ 2020-12-22 11:41 ` hjl.tools at gmail dot com 2021-01-06 13:35 ` hjl.tools at gmail dot com 2021-01-21 14:25 ` hjl.tools at gmail dot com 2 siblings, 0 replies; 4+ messages in thread From: hjl.tools at gmail dot com @ 2020-12-22 11:41 UTC (permalink / raw) To: glibc-bugs https://sourceware.org/bugzilla/show_bug.cgi?id=27104 H.J. Lu <hjl.tools at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|--- |2.33 CC| |fw at deneb dot enyo.de --- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> --- A patch is posted at https://sourceware.org/pipermail/libc-alpha/2020-December/120968.html -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug dynamic-link/27104] The COMMON_CPUID_INDEX_MAX handshake does not work 2020-12-22 11:17 [Bug dynamic-link/27104] New: The COMMON_CPUID_INDEX_MAX handshake does not work hjl.tools at gmail dot com 2020-12-22 11:41 ` [Bug dynamic-link/27104] " hjl.tools at gmail dot com @ 2021-01-06 13:35 ` hjl.tools at gmail dot com 2021-01-21 14:25 ` hjl.tools at gmail dot com 2 siblings, 0 replies; 4+ messages in thread From: hjl.tools at gmail dot com @ 2021-01-06 13:35 UTC (permalink / raw) To: glibc-bugs https://sourceware.org/bugzilla/show_bug.cgi?id=27104 --- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> --- The updated patch is at https://patchwork.sourceware.org/project/glibc/patch/20201225162451.1657088-1-hjl.tools@gmail.com/ -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug dynamic-link/27104] The COMMON_CPUID_INDEX_MAX handshake does not work 2020-12-22 11:17 [Bug dynamic-link/27104] New: The COMMON_CPUID_INDEX_MAX handshake does not work hjl.tools at gmail dot com 2020-12-22 11:41 ` [Bug dynamic-link/27104] " hjl.tools at gmail dot com 2021-01-06 13:35 ` hjl.tools at gmail dot com @ 2021-01-21 14:25 ` hjl.tools at gmail dot com 2 siblings, 0 replies; 4+ messages in thread From: hjl.tools at gmail dot com @ 2021-01-21 14:25 UTC (permalink / raw) To: glibc-bugs https://sourceware.org/bugzilla/show_bug.cgi?id=27104 H.J. Lu <hjl.tools at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |FIXED --- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> --- Fixed for 2.33 by commit ff6d62e9edb5dce537a6dd4a237d6053f331f09c Author: H.J. Lu <hjl.tools@gmail.com> Date: Fri Dec 25 07:30:46 2020 -0800 -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2021-01-21 14:25 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2020-12-22 11:17 [Bug dynamic-link/27104] New: The COMMON_CPUID_INDEX_MAX handshake does not work hjl.tools at gmail dot com 2020-12-22 11:41 ` [Bug dynamic-link/27104] " hjl.tools at gmail dot com 2021-01-06 13:35 ` hjl.tools at gmail dot com 2021-01-21 14:25 ` hjl.tools at gmail dot com
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