[Bug dynamic-link/34348] FAIL: elf/tst-thp-1 if THP is disabled in kernel

"cvs-commit at gcc dot gnu.org via Glibc-bugs" <[email protected]> Wed, 15 Jul 2026 11:26:37 +0000

Newsgroups	gmane.comp.lib.glibc.bugs
Message-ID	<[email protected]/bugzilla/>

https://sourceware.org/bugzilla/show_bug.cgi?id=3D34348

--- Comment #1 from Sourceware Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by H.J. Lu <[email protected]>:

https://sourceware.org/git/gitweb.cgi?p=3Dglibc.git;h=3De03cefb56b748139def=
60d97eea805a4a303e91e

commit e03cefb56b748139def60d97eea805a4a303e91e
Author: H.J. Lu <[email protected]>
Date:   Sat Jul 4 08:17:05 2026 +0800

    thp: Disable THP if THP isn't supported by kernel

    Since DL_MAP_DEFAULT_THP_PAGESIZE is defined for x86-64, THP control
    is to set to madvise by default.  If THP is disabled in x86-64 kernel,
    madvise (..., MADV_HUGEPAGE) returns -EINVAL to indicate that THP isn't
    supported.  Add _dl_thp_madvise to disable THP in this case.  This
    fixes BZ #34348.

    Signed-off-by: H.J. Lu <[email protected]>
    Reviewed-by: Adhemerval Zanella  <[email protected]>

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