>> >> That's for the situation when the other core tries to send an IPI at >> the same time. Unlikely but both cores may deadlock. >> > > Am I right that deadlock can occur only if the same IPI was sent? And > there should > be no situation when CRASH_DUMP IPI was sent from different processors at > the same time. > I hope you are right, but I can't see why we couldn't get a crash IPI from several processors at the same time, unfortunately. Even if such a thing can happen however, the timeout in my original suggestion (ignoring the interrupt enabling) should keep us from deadlocking indefinitely. /Per >> I actually had a patch to allow this which was really complicated and >> it still failed in a real-world scenario which I could foresee. >> >> -- >> Catalin >> >> _______________________________________________ >> kexec mailing list >> kexec at lists.infradead.org >> http://lists.infradead.org/mailman/listinfo/kexec >> > > > > -- > Best regards, > Maxim Uvarov >
