[Bug tdep/27028] New: FAIL: gdb.arch/i386-pkru.exp: pkru register

[Bug tdep/27028] New: FAIL: gdb.arch/i386-pkru.exp: pkru register

[vries at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=27028

            Bug ID: 27028
           Summary: FAIL: gdb.arch/i386-pkru.exp: pkru register
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: tdep
          Assignee: unassigned at sourceware dot org
          Reporter: vries at gcc dot gnu.org
  Target Milestone: ---

On OBS SLE-15, I see:
...
(gdb) print have_pkru()^M
$1 = 1^M
(gdb) PASS: gdb.arch/i386-pkru.exp: probe PKRU support
print $pkru^M
$2 = 1431655764^M
(gdb) FAIL: gdb.arch/i386-pkru.exp: pkru register
...

I can't reproduce this on my laptop, because:
...
(gdb) print have_pkru()^M
$1 = 0^M
(gdb) PASS: gdb.arch/i386-pkru.exp: probe PKRU support
UNSUPPORTED: gdb.arch/i386-pkru.exp: processor does not support protection key
feature.
...

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[Bug tdep/27028] FAIL: gdb.arch/i386-pkru.exp: pkru register

[vries at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=27028

--- Comment #1 from Tom de Vries <vries at gcc dot gnu.org> ---
Hmm, 1431655764 is 0x0x55555554, and in kernel-parameters.txt we find:
...
       init_pkru=      [X86] Specify the default memory protection keys rights
                        register contents for all processes.  0x55555554 by
                        default (disallow access to all but pkey 0).  Can
                        override in debugfs after boot.
...

So, why does the test expect 0?

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[Bug testsuite/27028] FAIL: gdb.arch/i386-pkru.exp: pkru register

[vries at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=27028

Tom de Vries <vries at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|tdep                        |testsuite

--- Comment #2 from Tom de Vries <vries at gcc dot gnu.org> ---
https://sourceware.org/pipermail/gdb-patches/2021-November/183939.html

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[Bug testsuite/27028] FAIL: gdb.arch/i386-pkru.exp: pkru register

[vries at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=27028

Tom de Vries <vries at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED
   Target Milestone|---                         |12.1

--- Comment #3 from Tom de Vries <vries at gcc dot gnu.org> ---
https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=a561456f2d426ae8ca9b8c41086cf846f334a9cd

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