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powerpc/powernv: Tell OPAL about our MMU mode on POWER9

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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>
This commit is contained in:
Benjamin Herrenschmidt
2017-06-30 17:37:32 -05:00
committed by Michael Ellerman
parent 1e2a516e89
commit 1c0eaf0f56
3 changed files with 36 additions and 3 deletions
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9
arch/powerpc/include/asm/opal-api.h
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@@ -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 {