On 10/23/19 2:27 PM, Thomas Gleixner wrote:
Traps enable interrupts conditionally but rely on the ASM return code to disable them again. That results in redundant interrupt disable and trace calls. Make the trap handlers disable interrupts before returning to avoid that, which allows simplification of the ASM entry code. Originally-by: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> --- arch/x86/kernel/traps.c | 32 +++++++++++++++++++++----------- arch/x86/mm/fault.c | 7 +++++-- 2 files changed, 26 insertions(+), 13 deletions(-)
Reviewed-by: Alexandre Chartre <alexandre.chartre@xxxxxxxxxx> alex.
