diff options
| author | Tony Luck <tony.luck@intel.com> | 2022-03-10 12:48:54 -0800 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2022-04-27 15:43:39 +0200 |
| commit | ef79970d7ccdc4e8855aa6079fc2f4797a6807fb (patch) | |
| tree | 4a422cd2e85c72611ec0ef05a95989d0241a08b3 /arch/x86/kernel/cpu/intel.c | |
| parent | b041b525dab95352fbd666b14dc73ab898df465f (diff) | |
x86/split-lock: Remove unused TIF_SLD bit
Changes to the "warn" mode of split lock handling mean that TIF_SLD is
never set.
Remove the bit, and the functions that use it.
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20220310204854.31752-3-tony.luck@intel.com
Diffstat (limited to 'arch/x86/kernel/cpu/intel.c')
| -rw-r--r-- | arch/x86/kernel/cpu/intel.c | 12 |
1 files changed, 0 insertions, 12 deletions
diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c index be2a0bdb9527..672e253a58b9 100644 --- a/arch/x86/kernel/cpu/intel.c +++ b/arch/x86/kernel/cpu/intel.c @@ -1233,18 +1233,6 @@ void handle_bus_lock(struct pt_regs *regs) } /* - * This function is called only when switching between tasks with - * different split-lock detection modes. It sets the MSR for the - * mode of the new task. This is right most of the time, but since - * the MSR is shared by hyperthreads on a physical core there can - * be glitches when the two threads need different modes. - */ -void switch_to_sld(unsigned long tifn) -{ - sld_update_msr(!(tifn & _TIF_SLD)); -} - -/* * Bits in the IA32_CORE_CAPABILITIES are not architectural, so they should * only be trusted if it is confirmed that a CPU model implements a * specific feature at a particular bit position. |