diff options
| author | Kyung Min Park <kyung.min.park@intel.com> | 2020-08-25 08:47:57 +0800 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2020-08-30 17:43:40 +0200 |
| commit | 18ec63faefb3fd311822556cd9b949f66b1eecee (patch) | |
| tree | 579ea6408f5422315b5d5508b259939c7ca84341 /lib/mpi/mpicoder.c | |
| parent | b91e7089ae70d2f7c81a4456e5b78fef498663d9 (diff) | |
x86/cpufeatures: Enumerate TSX suspend load address tracking instructions
Intel TSX suspend load tracking instructions aim to give a way to choose
which memory accesses do not need to be tracked in the TSX read set. Add
TSX suspend load tracking CPUID feature flag TSXLDTRK for enumeration.
A processor supports Intel TSX suspend load address tracking if
CPUID.0x07.0x0:EDX[16] is present. Two instructions XSUSLDTRK, XRESLDTRK
are available when this feature is present.
The CPU feature flag is shown as "tsxldtrk" in /proc/cpuinfo.
Signed-off-by: Kyung Min Park <kyung.min.park@intel.com>
Signed-off-by: Cathy Zhang <cathy.zhang@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Link: https://lkml.kernel.org/r/1598316478-23337-2-git-send-email-cathy.zhang@intel.com
Diffstat (limited to 'lib/mpi/mpicoder.c')
0 files changed, 0 insertions, 0 deletions