[gdb/testsuite] Add xfail in gdb.arch/i386-pkru.exp
On a x86_64-linux machine with pkru register, I run into:
...
(gdb) PASS: gdb.arch/i386-pkru.exp: set pkru value
info register pkru^M
pkru 0x12345678 305419896^M
(gdb) FAIL: gdb.arch/i386-pkru.exp: read value after setting value
...
This is a regression due to kernel commit e84ba47e313d ("x86/fpu: Hook up PKRU
onto ptrace()"). This is fixed by recent kernel commit 4a804c4f8356
("x86/fpu: Allow PKRU to be (once again) written by ptrace.").
The regression occurs for kernel versions v5.14-rc1 (the first tag containing
the regression) up to but excluding v6.2-rc1 (the first tag containing the fix).
Fix this by adding an xfail for the appropriate kernel versions.
Tested on x86_64-linux.
PR testsuite/29790
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=29790
2 files changed
