diff options
| author | Bharata B Rao <bharata@linux.ibm.com> | 2020-07-03 11:06:06 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-07-16 13:00:21 +1000 |
| commit | 029ab30b4c0a7ec587eece1ec07c3981fdff2bed (patch) | |
| tree | 07f443c331f0961a38b1c6d28dad74eb61e2f7c9 /arch/powerpc/include | |
| parent | 793d74a8c78e05d6833bfcf582e24e40bd92518f (diff) | |
| download | linux-029ab30b4c0a7ec587eece1ec07c3981fdff2bed.tar.bz2 | |
powerpc/mm: Enable radix GTSE only if supported.
Make GTSE an MMU feature and enable it by default for radix.
However for guest, conditionally enable it if hypervisor supports
it via OV5 vector. Let prom_init ask for radix GTSE only if the
support exists.
Having GTSE as an MMU feature will make it easy to enable radix
without GTSE. Currently radix assumes GTSE is enabled by default.
Signed-off-by: Bharata B Rao <bharata@linux.ibm.com>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200703053608.12884-2-bharata@linux.ibm.com
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/mmu.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h index f4ac25d4df05..884d51995934 100644 --- a/arch/powerpc/include/asm/mmu.h +++ b/arch/powerpc/include/asm/mmu.h @@ -28,6 +28,9 @@ * Individual features below. */ +/* Guest Translation Shootdown Enable */ +#define MMU_FTR_GTSE ASM_CONST(0x00001000) + /* * Support for 68 bit VA space. We added that from ISA 2.05 */ @@ -173,6 +176,7 @@ enum { #endif #ifdef CONFIG_PPC_RADIX_MMU MMU_FTR_TYPE_RADIX | + MMU_FTR_GTSE | #ifdef CONFIG_PPC_KUAP MMU_FTR_RADIX_KUAP | #endif /* CONFIG_PPC_KUAP */ |