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-rw-r--r--arch/arc/Kconfig4
-rw-r--r--arch/arm/Kconfig9
-rw-r--r--arch/arm/configs/imx_v6_v7_defconfig2
-rw-r--r--arch/arm/configs/milbeaut_m10v_defconfig2
-rw-r--r--arch/arm/configs/oxnas_v6_defconfig2
-rw-r--r--arch/arm/configs/pxa_defconfig2
-rw-r--r--arch/arm/configs/sama7_defconfig2
-rw-r--r--arch/arm/configs/sp7021_defconfig2
-rw-r--r--arch/arm64/Kconfig27
-rw-r--r--arch/arm64/include/asm/sparsemem.h2
-rw-r--r--arch/arm64/kvm/hyp/include/nvhe/gfp.h2
-rw-r--r--arch/arm64/kvm/hyp/nvhe/page_alloc.c10
-rw-r--r--arch/csky/Kconfig2
-rw-r--r--arch/ia64/Kconfig8
-rw-r--r--arch/ia64/include/asm/sparsemem.h4
-rw-r--r--arch/ia64/mm/hugetlbpage.c2
-rw-r--r--arch/loongarch/Kconfig15
-rw-r--r--arch/m68k/Kconfig.cpu5
-rw-r--r--arch/mips/Kconfig19
-rw-r--r--arch/nios2/Kconfig7
-rw-r--r--arch/powerpc/Kconfig27
-rw-r--r--arch/powerpc/configs/85xx/ge_imp3a_defconfig2
-rw-r--r--arch/powerpc/configs/fsl-emb-nonhw.config2
-rw-r--r--arch/powerpc/mm/book3s64/iommu_api.c2
-rw-r--r--arch/powerpc/mm/hugetlbpage.c2
-rw-r--r--arch/powerpc/platforms/powernv/pci-ioda.c2
-rw-r--r--arch/sh/configs/ecovec24_defconfig2
-rw-r--r--arch/sh/mm/Kconfig17
-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
-rw-r--r--arch/um/kernel/um_arch.c4
-rw-r--r--arch/xtensa/Kconfig5
34 files changed, 88 insertions, 118 deletions
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index d9a13ccf89a3..ab6d701365bb 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -556,7 +556,7 @@ endmenu # "ARC Architecture Configuration"
config ARCH_FORCE_MAX_ORDER
int "Maximum zone order"
- default "12" if ARC_HUGEPAGE_16M
- default "11"
+ default "11" if ARC_HUGEPAGE_16M
+ default "10"
source "kernel/power/Kconfig"
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index e24a9820e12f..929e646e84b9 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1355,9 +1355,9 @@ config ARM_MODULE_PLTS
config ARCH_FORCE_MAX_ORDER
int "Maximum zone order"
- default "12" if SOC_AM33XX
- default "9" if SA1111
- default "11"
+ default "11" if SOC_AM33XX
+ default "8" if SA1111
+ default "10"
help
The kernel memory allocator divides physically contiguous memory
blocks into "zones", where each zone is a power of two number of
@@ -1366,9 +1366,6 @@ 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 11 means that the largest free memory block is 2^10 pages.
-
config ALIGNMENT_TRAP
def_bool CPU_CP15_MMU
select HAVE_PROC_CPU if PROC_FS
diff --git a/arch/arm/configs/imx_v6_v7_defconfig b/arch/arm/configs/imx_v6_v7_defconfig
index 6dc6fed12af8..345a67e67dbd 100644
--- a/arch/arm/configs/imx_v6_v7_defconfig
+++ b/arch/arm/configs/imx_v6_v7_defconfig
@@ -31,7 +31,7 @@ CONFIG_SOC_VF610=y
CONFIG_SMP=y
CONFIG_ARM_PSCI=y
CONFIG_HIGHMEM=y
-CONFIG_ARCH_FORCE_MAX_ORDER=14
+CONFIG_ARCH_FORCE_MAX_ORDER=13
CONFIG_CMDLINE="noinitrd console=ttymxc0,115200"
CONFIG_KEXEC=y
CONFIG_CPU_FREQ=y
diff --git a/arch/arm/configs/milbeaut_m10v_defconfig b/arch/arm/configs/milbeaut_m10v_defconfig
index bd29e5012cb0..385ad0f391a8 100644
--- a/arch/arm/configs/milbeaut_m10v_defconfig
+++ b/arch/arm/configs/milbeaut_m10v_defconfig
@@ -26,7 +26,7 @@ CONFIG_THUMB2_KERNEL=y
# CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11 is not set
# CONFIG_ARM_PATCH_IDIV is not set
CONFIG_HIGHMEM=y
-CONFIG_ARCH_FORCE_MAX_ORDER=12
+CONFIG_ARCH_FORCE_MAX_ORDER=11
CONFIG_SECCOMP=y
CONFIG_KEXEC=y
CONFIG_EFI=y
diff --git a/arch/arm/configs/oxnas_v6_defconfig b/arch/arm/configs/oxnas_v6_defconfig
index 70a67b3fc91b..90779812c6dd 100644
--- a/arch/arm/configs/oxnas_v6_defconfig
+++ b/arch/arm/configs/oxnas_v6_defconfig
@@ -12,7 +12,7 @@ CONFIG_ARCH_OXNAS=y
CONFIG_MACH_OX820=y
CONFIG_SMP=y
CONFIG_NR_CPUS=16
-CONFIG_ARCH_FORCE_MAX_ORDER=12
+CONFIG_ARCH_FORCE_MAX_ORDER=11
CONFIG_SECCOMP=y
CONFIG_ARM_APPENDED_DTB=y
CONFIG_ARM_ATAG_DTB_COMPAT=y
diff --git a/arch/arm/configs/pxa_defconfig b/arch/arm/configs/pxa_defconfig
index e656d3af2266..b46e39369dbb 100644
--- a/arch/arm/configs/pxa_defconfig
+++ b/arch/arm/configs/pxa_defconfig
@@ -20,7 +20,7 @@ CONFIG_PXA_SHARPSL=y
CONFIG_MACH_AKITA=y
CONFIG_MACH_BORZOI=y
CONFIG_AEABI=y
-CONFIG_ARCH_FORCE_MAX_ORDER=9
+CONFIG_ARCH_FORCE_MAX_ORDER=8
CONFIG_CMDLINE="root=/dev/ram0 ro"
CONFIG_KEXEC=y
CONFIG_CPU_FREQ=y
diff --git a/arch/arm/configs/sama7_defconfig b/arch/arm/configs/sama7_defconfig
index 0d964c613d71..954112041403 100644
--- a/arch/arm/configs/sama7_defconfig
+++ b/arch/arm/configs/sama7_defconfig
@@ -19,7 +19,7 @@ CONFIG_ATMEL_CLOCKSOURCE_TCB=y
# CONFIG_CACHE_L2X0 is not set
# CONFIG_ARM_PATCH_IDIV is not set
# CONFIG_CPU_SW_DOMAIN_PAN is not set
-CONFIG_ARCH_FORCE_MAX_ORDER=15
+CONFIG_ARCH_FORCE_MAX_ORDER=14
CONFIG_UACCESS_WITH_MEMCPY=y
# CONFIG_ATAGS is not set
CONFIG_CMDLINE="console=ttyS0,115200 earlyprintk ignore_loglevel"
diff --git a/arch/arm/configs/sp7021_defconfig b/arch/arm/configs/sp7021_defconfig
index 5bca2eb59b86..c6448ac860b6 100644
--- a/arch/arm/configs/sp7021_defconfig
+++ b/arch/arm/configs/sp7021_defconfig
@@ -17,7 +17,7 @@ CONFIG_ARCH_SUNPLUS=y
# CONFIG_VDSO is not set
CONFIG_SMP=y
CONFIG_THUMB2_KERNEL=y
-CONFIG_ARCH_FORCE_MAX_ORDER=12
+CONFIG_ARCH_FORCE_MAX_ORDER=11
CONFIG_VFP=y
CONFIG_NEON=y
CONFIG_MODULES=y
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 1023e896d46b..cb5c6aa3254e 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -1476,22 +1476,22 @@ config XEN
# include/linux/mmzone.h requires the following to be true:
#
-# MAX_ORDER - 1 + PAGE_SHIFT <= SECTION_SIZE_BITS
+# MAX_ORDER + PAGE_SHIFT <= SECTION_SIZE_BITS
#
-# so the maximum value of MAX_ORDER is SECTION_SIZE_BITS + 1 - PAGE_SHIFT:
+# so the maximum value of MAX_ORDER is SECTION_SIZE_BITS - PAGE_SHIFT:
#
# | SECTION_SIZE_BITS | PAGE_SHIFT | max MAX_ORDER | default MAX_ORDER |
# ----+-------------------+--------------+-----------------+--------------------+
-# 4K | 27 | 12 | 16 | 11 |
-# 16K | 27 | 14 | 14 | 12 |
-# 64K | 29 | 16 | 14 | 14 |
+# 4K | 27 | 12 | 15 | 10 |
+# 16K | 27 | 14 | 13 | 11 |
+# 64K | 29 | 16 | 13 | 13 |
config ARCH_FORCE_MAX_ORDER
int "Maximum zone order" if ARM64_4K_PAGES || ARM64_16K_PAGES
- default "14" if ARM64_64K_PAGES
- range 12 14 if ARM64_16K_PAGES
- default "12" if ARM64_16K_PAGES
- range 11 16 if ARM64_4K_PAGES
- default "11"
+ default "13" if ARM64_64K_PAGES
+ range 11 13 if ARM64_16K_PAGES
+ default "11" if ARM64_16K_PAGES
+ range 10 15 if ARM64_4K_PAGES
+ default "10"
help
The kernel memory allocator divides physically contiguous memory
blocks into "zones", where each zone is a power of two number of
@@ -1500,14 +1500,11 @@ 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 11 means that the largest free memory block is 2^10 pages.
-
We make sure that we can allocate up to a HugePage size for each configuration.
Hence we have :
- MAX_ORDER = (PMD_SHIFT - PAGE_SHIFT) + 1 => PAGE_SHIFT - 2
+ MAX_ORDER = PMD_SHIFT - PAGE_SHIFT => PAGE_SHIFT - 3
- However for 4K, we choose a higher default value, 11 as opposed to 10, giving us
+ However for 4K, we choose a higher default value, 10 as opposed to 9, giving us
4M allocations matching the default size used by generic code.
config UNMAP_KERNEL_AT_EL0
diff --git a/arch/arm64/include/asm/sparsemem.h b/arch/arm64/include/asm/sparsemem.h
index 4b73463423c3..5f5437621029 100644
--- a/arch/arm64/include/asm/sparsemem.h
+++ b/arch/arm64/include/asm/sparsemem.h
@@ -10,7 +10,7 @@
/*
* Section size must be at least 512MB for 64K base
* page size config. Otherwise it will be less than
- * (MAX_ORDER - 1) and the build process will fail.
+ * MAX_ORDER and the build process will fail.
*/
#ifdef CONFIG_ARM64_64K_PAGES
#define SECTION_SIZE_BITS 29
diff --git a/arch/arm64/kvm/hyp/include/nvhe/gfp.h b/arch/arm64/kvm/hyp/include/nvhe/gfp.h
index 0a048dc06a7d..fe5472a184a3 100644
--- a/arch/arm64/kvm/hyp/include/nvhe/gfp.h
+++ b/arch/arm64/kvm/hyp/include/nvhe/gfp.h
@@ -16,7 +16,7 @@ struct hyp_pool {
* API at EL2.
*/
hyp_spinlock_t lock;
- struct list_head free_area[MAX_ORDER];
+ struct list_head free_area[MAX_ORDER + 1];
phys_addr_t range_start;
phys_addr_t range_end;
unsigned short max_order;
diff --git a/arch/arm64/kvm/hyp/nvhe/page_alloc.c b/arch/arm64/kvm/hyp/nvhe/page_alloc.c
index 803ba3222e75..b1e392186a0f 100644
--- a/arch/arm64/kvm/hyp/nvhe/page_alloc.c
+++ b/arch/arm64/kvm/hyp/nvhe/page_alloc.c
@@ -110,7 +110,7 @@ static void __hyp_attach_page(struct hyp_pool *pool,
* after coalescing, so make sure to mark it HYP_NO_ORDER proactively.
*/
p->order = HYP_NO_ORDER;
- for (; (order + 1) < pool->max_order; order++) {
+ for (; (order + 1) <= pool->max_order; order++) {
buddy = __find_buddy_avail(pool, p, order);
if (!buddy)
break;
@@ -203,9 +203,9 @@ void *hyp_alloc_pages(struct hyp_pool *pool, unsigned short order)
hyp_spin_lock(&pool->lock);
/* Look for a high-enough-order page */
- while (i < pool->max_order && list_empty(&pool->free_area[i]))
+ while (i <= pool->max_order && list_empty(&pool->free_area[i]))
i++;
- if (i >= pool->max_order) {
+ if (i > pool->max_order) {
hyp_spin_unlock(&pool->lock);
return NULL;
}
@@ -228,8 +228,8 @@ int hyp_pool_init(struct hyp_pool *pool, u64 pfn, unsigned int nr_pages,
int i;
hyp_spin_lock_init(&pool->lock);
- pool->max_order = min(MAX_ORDER, get_order((nr_pages + 1) << PAGE_SHIFT));
- for (i = 0; i < pool->max_order; i++)
+ pool->max_order = min(MAX_ORDER, get_order(nr_pages << PAGE_SHIFT));
+ for (i = 0; i <= pool->max_order; i++)
INIT_LIST_HEAD(&pool->free_area[i]);
pool->range_start = phys;
pool->range_end = phys + (nr_pages << PAGE_SHIFT);
diff --git a/arch/csky/Kconfig b/arch/csky/Kconfig
index dba02da6fa34..c694fac43bed 100644
--- a/arch/csky/Kconfig
+++ b/arch/csky/Kconfig
@@ -334,7 +334,7 @@ config HIGHMEM
config ARCH_FORCE_MAX_ORDER
int "Maximum zone order"
- default "11"
+ default "10"
config DRAM_BASE
hex "DRAM start addr (the same with memory-section in dts)"
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index d7e4a24e8644..0d2f41fa56ee 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -202,10 +202,10 @@ config IA64_CYCLONE
If you're unsure, answer N.
config ARCH_FORCE_MAX_ORDER
- int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
- range 11 17 if !HUGETLB_PAGE
- default "17" if HUGETLB_PAGE
- default "11"
+ int "MAX_ORDER (10 - 16)" if !HUGETLB_PAGE
+ range 10 16 if !HUGETLB_PAGE
+ default "16" if HUGETLB_PAGE
+ default "10"
config SMP
bool "Symmetric multi-processing support"
diff --git a/arch/ia64/include/asm/sparsemem.h b/arch/ia64/include/asm/sparsemem.h
index 84e8ce387b69..a58f8b466d96 100644
--- a/arch/ia64/include/asm/sparsemem.h
+++ b/arch/ia64/include/asm/sparsemem.h
@@ -12,9 +12,9 @@
#define SECTION_SIZE_BITS (30)
#define MAX_PHYSMEM_BITS (50)
#ifdef CONFIG_ARCH_FORCE_MAX_ORDER
-#if ((CONFIG_ARCH_FORCE_MAX_ORDER - 1 + PAGE_SHIFT) > SECTION_SIZE_BITS)
+#if (CONFIG_ARCH_FORCE_MAX_ORDER + PAGE_SHIFT > SECTION_SIZE_BITS)
#undef SECTION_SIZE_BITS
-#define SECTION_SIZE_BITS (CONFIG_ARCH_FORCE_MAX_ORDER - 1 + PAGE_SHIFT)
+#define SECTION_SIZE_BITS (CONFIG_ARCH_FORCE_MAX_ORDER + PAGE_SHIFT)
#endif
#endif
diff --git a/arch/ia64/mm/hugetlbpage.c b/arch/ia64/mm/hugetlbpage.c
index 380d2f3966c9..e8dd4323fb86 100644
--- a/arch/ia64/mm/hugetlbpage.c
+++ b/arch/ia64/mm/hugetlbpage.c
@@ -170,7 +170,7 @@ static int __init hugetlb_setup_sz(char *str)
size = memparse(str, &str);
if (*str || !is_power_of_2(size) || !(tr_pages & size) ||
size <= PAGE_SIZE ||
- size >= (1UL << PAGE_SHIFT << MAX_ORDER)) {
+ size > (1UL << PAGE_SHIFT << MAX_ORDER)) {
printk(KERN_WARNING "Invalid huge page size specified\n");
return 1;
}
diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig
index 7fd51257e0ed..272a3a12c98d 100644
--- a/arch/loongarch/Kconfig
+++ b/arch/loongarch/Kconfig
@@ -420,12 +420,12 @@ config NODES_SHIFT
config ARCH_FORCE_MAX_ORDER
int "Maximum zone order"
- range 14 64 if PAGE_SIZE_64KB
- default "14" if PAGE_SIZE_64KB
- range 12 64 if PAGE_SIZE_16KB
- default "12" if PAGE_SIZE_16KB
- range 11 64
- default "11"
+ range 13 63 if PAGE_SIZE_64KB
+ default "13" if PAGE_SIZE_64KB
+ range 11 63 if PAGE_SIZE_16KB
+ default "11" if PAGE_SIZE_16KB
+ range 10 63
+ default "10"
help
The kernel memory allocator divides physically contiguous memory
blocks into "zones", where each zone is a power of two number of
@@ -434,9 +434,6 @@ 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 11 means that the largest free memory block is 2^10 pages.
-
The page size is not necessarily 4KB. Keep this in mind
when choosing a value for this option.
diff --git a/arch/m68k/Kconfig.cpu b/arch/m68k/Kconfig.cpu
index 9380f6e3bb66..c9df6572133f 100644
--- a/arch/m68k/Kconfig.cpu
+++ b/arch/m68k/Kconfig.cpu
@@ -400,7 +400,7 @@ config SINGLE_MEMORY_CHUNK
config ARCH_FORCE_MAX_ORDER
int "Maximum zone order" if ADVANCED
depends on !SINGLE_MEMORY_CHUNK
- default "11"
+ default "10"
help
The kernel memory allocator divides physically contiguous memory
blocks into "zones", where each zone is a power of two number of
@@ -413,9 +413,6 @@ config ARCH_FORCE_MAX_ORDER
value also defines the minimal size of the hole that allows
freeing unused memory map.
- This config option is actually maximum order plus one. For example,
- a value of 11 means that the largest free memory block is 2^10 pages.
-
config 060_WRITETHROUGH
bool "Use write-through caching for 68060 supervisor accesses"
depends on ADVANCED && M68060
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index e2f3ca73f40d..3e8b765b8c7b 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -2137,14 +2137,14 @@ endchoice
config ARCH_FORCE_MAX_ORDER
int "Maximum zone order"
- range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
- default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
- range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
- default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
- range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
- default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
- range 0 64
- default "11"
+ range 13 63 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
+ default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
+ range 12 63 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
+ default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
+ range 11 63 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
+ default "11" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
+ range 0 63
+ default "10"
help
The kernel memory allocator divides physically contiguous memory
blocks into "zones", where each zone is a power of two number of
@@ -2153,9 +2153,6 @@ 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 11 means that the largest free memory block is 2^10 pages.
-
The page size is not necessarily 4KB. Keep this in mind
when choosing a value for this option.
diff --git a/arch/nios2/Kconfig b/arch/nios2/Kconfig
index a582f72104f3..89708b95978c 100644
--- a/arch/nios2/Kconfig
+++ b/arch/nios2/Kconfig
@@ -46,8 +46,8 @@ source "kernel/Kconfig.hz"
config ARCH_FORCE_MAX_ORDER
int "Maximum zone order"
- range 9 20
- default "11"
+ range 8 19
+ default "10"
help
The kernel memory allocator divides physically contiguous memory
blocks into "zones", where each zone is a power of two number of
@@ -56,9 +56,6 @@ 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 11 means that the largest free memory block is 2^10 pages.
-
endmenu
source "arch/nios2/platform/Kconfig.platform"
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 49c6d36b2b3e..24d56536b269 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -897,18 +897,18 @@ config DATA_SHIFT
config ARCH_FORCE_MAX_ORDER
int "Maximum zone order"
- range 8 9 if PPC64 && PPC_64K_PAGES
- default "9" if PPC64 && PPC_64K_PAGES
- range 13 13 if PPC64 && !PPC_64K_PAGES
- default "13" if PPC64 && !PPC_64K_PAGES
- range 9 64 if PPC32 && PPC_16K_PAGES
- default "9" if PPC32 && PPC_16K_PAGES
- range 7 64 if PPC32 && PPC_64K_PAGES
- default "7" if PPC32 && PPC_64K_PAGES
- range 5 64 if PPC32 && PPC_256K_PAGES
- default "5" if PPC32 && PPC_256K_PAGES
- range 11 64
- default "11"
+ range 7 8 if PPC64 && PPC_64K_PAGES
+ default "8" if PPC64 && PPC_64K_PAGES
+ range 12 12 if PPC64 && !PPC_64K_PAGES
+ default "12" if PPC64 && !PPC_64K_PAGES
+ range 8 63 if PPC32 && PPC_16K_PAGES
+ default "8" if PPC32 && PPC_16K_PAGES
+ range 6 63 if PPC32 && PPC_64K_PAGES
+ default "6" if PPC32 && PPC_64K_PAGES
+ range 4 63 if PPC32 && PPC_256K_PAGES
+ default "4" if PPC32 && PPC_256K_PAGES
+ range 10 63
+ default "10"
help
The kernel memory allocator divides physically contiguous memory
blocks into "zones", where each zone is a power of two number of
@@ -917,9 +917,6 @@ 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 11 means that the largest free memory block is 2^10 pages.
-
The page size is not necessarily 4KB. For example, on 64-bit
systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
this in mind when choosing a value for this option.
diff --git a/arch/powerpc/configs/85xx/ge_imp3a_defconfig b/arch/powerpc/configs/85xx/ge_imp3a_defconfig
index ea719898b581..6cb7e90d52c1 100644
--- a/arch/powerpc/configs/85xx/ge_imp3a_defconfig
+++ b/arch/powerpc/configs/85xx/ge_imp3a_defconfig
@@ -30,7 +30,7 @@ CONFIG_PREEMPT=y
# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
CONFIG_BINFMT_MISC=m
CONFIG_MATH_EMULATION=y
-CONFIG_ARCH_FORCE_MAX_ORDER=17
+CONFIG_ARCH_FORCE_MAX_ORDER=16
CONFIG_PCI=y
CONFIG_PCIEPORTBUS=y
CONFIG_PCI_MSI=y
diff --git a/arch/powerpc/configs/fsl-emb-nonhw.config b/arch/powerpc/configs/fsl-emb-nonhw.config
index ab8a8c4530d9..3009b0efaf34 100644
--- a/arch/powerpc/configs/fsl-emb-nonhw.config
+++ b/arch/powerpc/configs/fsl-emb-nonhw.config
@@ -41,7 +41,7 @@ CONFIG_FIXED_PHY=y
CONFIG_FONT_8x16=y
CONFIG_FONT_8x8=y
CONFIG_FONTS=y
-CONFIG_ARCH_FORCE_MAX_ORDER=13
+CONFIG_ARCH_FORCE_MAX_ORDER=12
CONFIG_FRAMEBUFFER_CONSOLE=y
CONFIG_FRAME_WARN=1024
CONFIG_FTL=y
diff --git a/arch/powerpc/mm/book3s64/iommu_api.c b/arch/powerpc/mm/book3s64/iommu_api.c
index 7fcfba162e0d..81d7185e2ae8 100644
--- a/arch/powerpc/mm/book3s64/iommu_api.c
+++ b/arch/powerpc/mm/book3s64/iommu_api.c
@@ -97,7 +97,7 @@ static long mm_iommu_do_alloc(struct mm_struct *mm, unsigned long ua,
}
mmap_read_lock(mm);
- chunk = (1UL << (PAGE_SHIFT + MAX_ORDER - 1)) /
+ chunk = (1UL << (PAGE_SHIFT + MAX_ORDER)) /
sizeof(struct vm_area_struct *);
chunk = min(chunk, entries);
for (entry = 0; entry < entries; entry += chunk) {
diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
index f1ba8d1e8c1a..b900933507da 100644
--- a/arch/powerpc/mm/hugetlbpage.c
+++ b/arch/powerpc/mm/hugetlbpage.c
@@ -615,7 +615,7 @@ void __init gigantic_hugetlb_cma_reserve(void)
order = mmu_psize_to_shift(MMU_PAGE_16G) - PAGE_SHIFT;
if (order) {
- VM_WARN_ON(order < MAX_ORDER);
+ VM_WARN_ON(order <= MAX_ORDER);
hugetlb_cma_reserve(order);
}
}
diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
index 4f6e20a35aa1..5a81f106068e 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -1740,7 +1740,7 @@ static long pnv_pci_ioda2_setup_default_config(struct pnv_ioda_pe *pe)
* DMA window can be larger than available memory, which will
* cause errors later.
*/
- const u64 maxblock = 1UL << (PAGE_SHIFT + MAX_ORDER - 1);
+ const u64 maxblock = 1UL << (PAGE_SHIFT + MAX_ORDER);
/*
* We create the default window as big as we can. The constraint is
diff --git a/arch/sh/configs/ecovec24_defconfig b/arch/sh/configs/ecovec24_defconfig
index b52e14ccb450..4d655e8d4d74 100644
--- a/arch/sh/configs/ecovec24_defconfig
+++ b/arch/sh/configs/ecovec24_defconfig
@@ -8,7 +8,7 @@ CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y
# CONFIG_BLK_DEV_BSG is not set
CONFIG_CPU_SUBTYPE_SH7724=y
-CONFIG_ARCH_FORCE_MAX_ORDER=12
+CONFIG_ARCH_FORCE_MAX_ORDER=11
CONFIG_MEMORY_SIZE=0x10000000
CONFIG_FLATMEM_MANUAL=y
CONFIG_SH_ECOVEC=y
diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig
index 411fdc0901f7..40271090bd7d 100644
--- a/arch/sh/mm/Kconfig
+++ b/arch/sh/mm/Kconfig
@@ -20,13 +20,13 @@ config PAGE_OFFSET
config ARCH_FORCE_MAX_ORDER
int "Maximum zone order"
- range 9 64 if PAGE_SIZE_16KB
- default "9" if PAGE_SIZE_16KB
- range 7 64 if PAGE_SIZE_64KB
- default "7" if PAGE_SIZE_64KB
- range 11 64
- default "14" if !MMU
- default "11"
+ range 8 63 if PAGE_SIZE_16KB
+ default "8" if PAGE_SIZE_16KB
+ range 6 63 if PAGE_SIZE_64KB
+ default "6" if PAGE_SIZE_64KB
+ range 10 63
+ default "13" if !MMU
+ default "10"
help
The kernel memory allocator divides physically contiguous memory
blocks into "zones", where each zone is a power of two number of
@@ -35,9 +35,6 @@ 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 11 means that the largest free memory block is 2^10 pages.
-
The page size is not necessarily 4KB. Keep this in mind when
choosing a value for this option.
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) {
diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c
index 5e5a9c8e0e5d..8dcda617b8bf 100644
--- a/arch/um/kernel/um_arch.c
+++ b/arch/um/kernel/um_arch.c
@@ -368,10 +368,10 @@ int __init linux_main(int argc, char **argv)
max_physmem = TASK_SIZE - uml_physmem - iomem_size - MIN_VMALLOC;
/*
- * Zones have to begin on a 1 << MAX_ORDER-1 page boundary,
+ * Zones have to begin on a 1 << MAX_ORDER page boundary,
* so this makes sure that's true for highmem
*/
- max_physmem &= ~((1 << (PAGE_SHIFT + MAX_ORDER - 1)) - 1);
+ max_physmem &= ~((1 << (PAGE_SHIFT + MAX_ORDER)) - 1);
if (physmem_size + iomem_size > max_physmem) {
highmem = physmem_size + iomem_size - max_physmem;
physmem_size -= highmem;
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index bcb0c5d2abc2..3eee334ba873 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -773,7 +773,7 @@ config HIGHMEM
config ARCH_FORCE_MAX_ORDER
int "Maximum zone order"
- default "11"
+ default "10"
help
The kernel memory allocator divides physically contiguous memory
blocks into "zones", where each zone is a power of two number of
@@ -782,9 +782,6 @@ 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 11 means that the largest free memory block is 2^10 pages.
-
endmenu
menu "Power management options"