From 6e0b8bc965d25a8e0701eaca3fca5941b4f4b2b2 Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Fri, 28 Jun 2013 18:15:18 +1000 Subject: powerpc/pseries: Inform the hypervisor we are using EBB regs On LPAR systems we need to inform the hypervisor that we are using the EBB registers. We do this by setting a bit in the Virtual Processor Area (VPA) - formerly known as the lppaca. For now we do this always, ie. we do not dynamically enable/disable. Signed-off-by: Michael Ellerman Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/platforms/pseries/lpar.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'arch/powerpc/platforms') diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c index fd0f2f2a9b90..02d6e21619bb 100644 --- a/arch/powerpc/platforms/pseries/lpar.c +++ b/arch/powerpc/platforms/pseries/lpar.c @@ -71,6 +71,9 @@ void vpa_init(int cpu) if (cpu_has_feature(CPU_FTR_ALTIVEC)) lppaca_of(cpu).vmxregs_in_use = 1; + if (cpu_has_feature(CPU_FTR_ARCH_207S)) + lppaca_of(cpu).ebb_regs_in_use = 1; + addr = __pa(&lppaca_of(cpu)); ret = register_vpa(hwcpu, addr); -- cgit v1.2.3