On Thu, Jul 19, 2018 at 11:42:50AM +0200, Dietmar Eggemann wrote: > Hi, > > running v4.18-rc5 (plus still missing "power: vexpress: fix corruption in > notifier registration", otherwise I get this rcu_sched stall issue) on TC2 > (A7 boot) with vanilla multi_v7_defconfig plus > CONFIG_ARM_BIG_LITTLE_CPUIDLE=y gives me continuous: > > ... > CPUX: Spectre v2: incorrect context switching function, system vulnerable > ... > > messages. > > Work around is to disable CONFIG_HARDEN_BRANCH_PREDICTOR.
or disable big.Little if you want the hardening. The choices are currently either protection against Spectre or big.Little support since the two are mutually exclusive at the moment. -- RMK's Patch system: http://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line in suburbia: sync at 13.8Mbps down 630kbps up According to speedtest.net: 13Mbps down 490kbps up
