From 1c0eaf0f56d6128af7f0f252855173fcee85d202 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Fri, 30 Jun 2017 17:37:32 -0500 Subject: powerpc/powernv: Tell OPAL about our MMU mode on POWER9 That will allow OPAL to configure the CPU in an optimal way. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Michael Neuling Signed-off-by: Michael Ellerman --- arch/powerpc/include/asm/opal-api.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'arch/powerpc/include/asm/opal-api.h') diff --git a/arch/powerpc/include/asm/opal-api.h b/arch/powerpc/include/asm/opal-api.h index ef930ba500f9..3130a73652c7 100644 --- a/arch/powerpc/include/asm/opal-api.h +++ b/arch/powerpc/include/asm/opal-api.h @@ -876,6 +876,15 @@ struct OpalIoPhb4ErrorData { enum { OPAL_REINIT_CPUS_HILE_BE = (1 << 0), OPAL_REINIT_CPUS_HILE_LE = (1 << 1), + + /* These two define the base MMU mode of the host on P9 + * + * On P9 Nimbus DD2.0 and Cumlus (and later), KVM can still + * create hash guests in "radix" mode with care (full core + * switch only). + */ + OPAL_REINIT_CPUS_MMU_HASH = (1 << 2), + OPAL_REINIT_CPUS_MMU_RADIX = (1 << 3), }; typedef struct oppanel_line { -- cgit