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| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2017-03-22 06:37:00 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-04-01 13:12:27 +0300 |
| commit | 82228e362f9b7f4b876d0fbb1036c235797c6b1d (patch) | |
| tree | ba7432ffa3577cd4cadb5bd41e1fc8ac21e4a7d3 /arch/powerpc/include/asm/mmu_context.h | |
| parent | bb1832217a859f6dbe4a45ff2ba7fdcab0bb3958 (diff) | |
| download | linux-82228e362f9b7f4b876d0fbb1036c235797c6b1d.tar.xz | |
powerpc/pseries: Skip using reserved virtual address range
Now that we use all the available virtual address range, we need to make
sure we don't generate VSID such that it overlaps with the reserved vsid
range. Reserved vsid range include the virtual address range used by the
adjunct partition and also the VRMA virtual segment. We find the context
value that can result in generating such a VSID and reserve it early in
boot.
We don't look at the adjunct range, because for now we disable the
adjunct usage in a Linux LPAR via CAS interface.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
[mpe: Rewrite hash__reserve_context_id(), move the rest into pseries]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/mmu_context.h')
| -rw-r--r-- | arch/powerpc/include/asm/mmu_context.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/mmu_context.h b/arch/powerpc/include/asm/mmu_context.h index 7d721101ec78..78803a7ebdd9 100644 --- a/arch/powerpc/include/asm/mmu_context.h +++ b/arch/powerpc/include/asm/mmu_context.h @@ -52,6 +52,7 @@ static inline void switch_mmu_context(struct mm_struct *prev, } extern int hash__alloc_context_id(void); +extern void hash__reserve_context_id(int id); extern void __destroy_context(int context_id); static inline void mmu_context_init(void) { } #else |