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-rw-r--r--arch/sparc/Kconfig5
-rw-r--r--arch/sparc/kernel/pci_sun4v.c2
-rw-r--r--arch/sparc/kernel/traps_64.c2
-rw-r--r--arch/sparc/mm/tsb.c4
4 files changed, 5 insertions, 8 deletions
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 84437a4c6545..e3242bf5a8df 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -271,7 +271,7 @@ config ARCH_SPARSEMEM_DEFAULT
config ARCH_FORCE_MAX_ORDER
int "Maximum zone order"
- default "13"
+ default "12"
help
The kernel memory allocator divides physically contiguous memory
blocks into "zones", where each zone is a power of two number of
@@ -280,9 +280,6 @@ config ARCH_FORCE_MAX_ORDER
blocks of physically contiguous memory, then you may need to
increase this value.
- This config option is actually maximum order plus one. For example,
- a value of 13 means that the largest free memory block is 2^12 pages.
-
if SPARC64 || COMPILE_TEST
source "kernel/power/Kconfig"
endif
diff --git a/arch/sparc/kernel/pci_sun4v.c b/arch/sparc/kernel/pci_sun4v.c
index 384480971805..7d91ca6aa675 100644
--- a/arch/sparc/kernel/pci_sun4v.c
+++ b/arch/sparc/kernel/pci_sun4v.c
@@ -193,7 +193,7 @@ static void *dma_4v_alloc_coherent(struct device *dev, size_t size,
size = IO_PAGE_ALIGN(size);
order = get_order(size);
- if (unlikely(order >= MAX_ORDER))
+ if (unlikely(order > MAX_ORDER))
return NULL;
npages = size >> IO_PAGE_SHIFT;
diff --git a/arch/sparc/kernel/traps_64.c b/arch/sparc/kernel/traps_64.c
index 5b4de4a89dec..08ffd17d5ec3 100644
--- a/arch/sparc/kernel/traps_64.c
+++ b/arch/sparc/kernel/traps_64.c
@@ -897,7 +897,7 @@ void __init cheetah_ecache_flush_init(void)
/* Now allocate error trap reporting scoreboard. */
sz = NR_CPUS * (2 * sizeof(struct cheetah_err_info));
- for (order = 0; order < MAX_ORDER; order++) {
+ for (order = 0; order <= MAX_ORDER; order++) {
if ((PAGE_SIZE << order) >= sz)
break;
}
diff --git a/arch/sparc/mm/tsb.c b/arch/sparc/mm/tsb.c
index dba8dffe2113..5e2931a18409 100644
--- a/arch/sparc/mm/tsb.c
+++ b/arch/sparc/mm/tsb.c
@@ -402,8 +402,8 @@ void tsb_grow(struct mm_struct *mm, unsigned long tsb_index, unsigned long rss)
unsigned long new_rss_limit;
gfp_t gfp_flags;
- if (max_tsb_size > (PAGE_SIZE << (MAX_ORDER - 1)))
- max_tsb_size = (PAGE_SIZE << (MAX_ORDER - 1));
+ if (max_tsb_size > PAGE_SIZE << MAX_ORDER)
+ max_tsb_size = PAGE_SIZE << MAX_ORDER;
new_cache_index = 0;
for (new_size = 8192; new_size < max_tsb_size; new_size <<= 1UL) {