When running inside a virtual machine, we can not modify timebase, so let's just not call the functions for it then.
This resolves hangs when booting e500 SMP guests on overcommitted hosts. Reported-by: Stuart Yoder <b08...@freescale.com> Signed-off-by: Alexander Graf <ag...@suse.de> --- arch/powerpc/platforms/85xx/smp.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/arch/powerpc/platforms/85xx/smp.c b/arch/powerpc/platforms/85xx/smp.c index ff42490..d4b6c1f 100644 --- a/arch/powerpc/platforms/85xx/smp.c +++ b/arch/powerpc/platforms/85xx/smp.c @@ -249,6 +249,13 @@ void __init mpc85xx_smp_init(void) smp_85xx_ops.cause_ipi = doorbell_cause_ipi; } + /* When running under a hypervisor, we can not modify tb */ + np = of_find_node_by_path("/hypervisor"); + if (np) { + smp_85xx_ops.give_timebase = NULL; + smp_85xx_ops.take_timebase = NULL; + } + smp_ops = &smp_85xx_ops; #ifdef CONFIG_KEXEC -- 1.6.0.2 -- To unsubscribe from this list: send the line "unsubscribe kvm-ppc" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html