On Sun, 14 Apr 2019 at 22:51, Thomas Gleixner <[email protected]> wrote: > Because mails fall through the cracks occasionally. > > Does the patch below cure your problem? > > Thanks, > > tglx > > 8<------------------ > --- a/arch/x86/kernel/process.c > +++ b/arch/x86/kernel/process.c > @@ -426,6 +426,8 @@ static __always_inline void __speculatio > u64 msr = x86_spec_ctrl_base; > bool updmsr = false; > > + lockdep_assert_irqs_disabled(); > + > /* > * If TIF_SSBD is different, select the proper mitigation > * method. Note that if SSBD mitigation is disabled or permanentely > @@ -477,10 +479,12 @@ static unsigned long speculation_ctrl_up > > void speculation_ctrl_update(unsigned long tif) > { > + unsigned long flags; > + > /* Forced update. Make sure all relevant TIF flags are different */ > - preempt_disable(); > + local_irq_save(flags); > __speculation_ctrl_update(~tif, tif); > - preempt_enable(); > + local_irq_restore(flags); > } > > /* Called from seccomp/prctl update */
Thanks, with this patch problem was gone. We have time land it in 5.1? -- Best Regards, Mike Gavrilov.
