summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/include/asm/paca.h
diff options
context:
space:
mode:
authorChristophe Leroy <christophe.leroy@c-s.fr>2018-02-22 15:27:28 +0100
committerMichael Ellerman <mpe@ellerman.id.au>2018-03-05 23:21:23 +0100
commit15472423ce47d6397d08d48daaae8590c9f9f242 (patch)
tree7f06b7bf75af5c3649a3c4f28144e4a50b3da72e /arch/powerpc/include/asm/paca.h
parentpowerpc/mm/slice: Fix hugepage allocation at hint address on 8xx (diff)
downloadlinux-15472423ce47d6397d08d48daaae8590c9f9f242.tar.xz
linux-15472423ce47d6397d08d48daaae8590c9f9f242.zip
powerpc/mm/slice: Allow up to 64 low slices
While the implementation of the "slices" address space allows a significant amount of high slices, it limits the number of low slices to 16 due to the use of a single u64 low_slices_psize element in struct mm_context_t On the 8xx, the minimum slice size is the size of the area covered by a single PMD entry, ie 4M in 4K pages mode and 64M in 16K pages mode. This means we could have at least 64 slices. In order to override this limitation, this patch switches the handling of low_slices_psize to char array as done already for high_slices_psize. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/paca.h')
-rw-r--r--arch/powerpc/include/asm/paca.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/paca.h b/arch/powerpc/include/asm/paca.h
index b62c31037cad..d2bf71dddbef 100644
--- a/arch/powerpc/include/asm/paca.h
+++ b/arch/powerpc/include/asm/paca.h
@@ -141,7 +141,7 @@ struct paca_struct {
#ifdef CONFIG_PPC_BOOK3S
mm_context_id_t mm_ctx_id;
#ifdef CONFIG_PPC_MM_SLICES
- u64 mm_ctx_low_slices_psize;
+ unsigned char mm_ctx_low_slices_psize[BITS_PER_LONG / BITS_PER_BYTE];
unsigned char mm_ctx_high_slices_psize[SLICE_ARRAY_SIZE];
unsigned long mm_ctx_slb_addr_limit;
#else