TencentOS-kernel/tools/testing
Andy Lutomirski 79615afc19 selftests/x86: Consolidate and fix get/set_eflags() helpers
commit cced0b24bb545bfe74fea96de84adc23c0146b05 upstream.
Backport summary: for 5.4 kernel fsgsbase support.

There are several copies of get_eflags() and set_eflags() and they all are
buggy.  Consolidate them and fix them.  The fixes are:

Add memory clobbers.  These are probably unnecessary but they make sure
that the compiler doesn't move something past one of these calls when it
shouldn't.

Respect the redzone on x86_64.  There has no failure been observed related
to this, but it's definitely a bug.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/982ce58ae8dea2f1e57093ee894760e35267e751.1593191971.git.luto@kernel.org

(cherry picked from commit cced0b24bb545bfe74fea96de84adc23c0146b05)
Signed-off-by: Ethan Zhao <Haifeng.Zhao@intel.com>
2021-07-21 20:42:45 +08:00
..
fault-injection Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ktest ktest.pl: If size of log is too big to email, email error message 2021-03-16 16:42:19 +08:00
nvdimm tools/test/nvdimm: Fix out of tree build 2021-03-16 16:26:45 +08:00
radix-tree idr test suite: Create anchor before launching throbber 2021-05-20 16:07:06 +08:00
scatterlist Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
selftests selftests/x86: Consolidate and fix get/set_eflags() helpers 2021-07-21 20:42:45 +08:00
vsock Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00