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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2017-06-30 17:37:32 -0500 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-07-10 21:12:27 +1000 |
| commit | 1c0eaf0f56d6128af7f0f252855173fcee85d202 (patch) | |
| tree | b732d645cd49c2cf38fce17f175f7ddd1257aed3 /arch/powerpc/include/asm/opal-api.h | |
| parent | powerpc/kexec: Fix radix to hash kexec due to IAMR/AMOR (diff) | |
| download | linux-1c0eaf0f56d6128af7f0f252855173fcee85d202.tar.gz linux-1c0eaf0f56d6128af7f0f252855173fcee85d202.zip | |
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 <benh@kernel.crashing.org>
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/opal-api.h')
| -rw-r--r-- | arch/powerpc/include/asm/opal-api.h | 9 |
1 files changed, 9 insertions, 0 deletions
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 { |