diff options
Diffstat (limited to 'arch')
-rw-r--r-- | arch/powerpc/platforms/pseries/hotplug-memory.c | 66 | ||||
-rw-r--r-- | arch/x86/mm/init_64.c | 14 |
2 files changed, 67 insertions, 13 deletions
diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c b/arch/powerpc/platforms/pseries/hotplug-memory.c index bc8803664140..33867ec4a234 100644 --- a/arch/powerpc/platforms/pseries/hotplug-memory.c +++ b/arch/powerpc/platforms/pseries/hotplug-memory.c | |||
@@ -17,6 +17,54 @@ | |||
17 | #include <asm/pSeries_reconfig.h> | 17 | #include <asm/pSeries_reconfig.h> |
18 | #include <asm/sparsemem.h> | 18 | #include <asm/sparsemem.h> |
19 | 19 | ||
20 | static unsigned long get_memblock_size(void) | ||
21 | { | ||
22 | struct device_node *np; | ||
23 | unsigned int memblock_size = 0; | ||
24 | |||
25 | np = of_find_node_by_path("/ibm,dynamic-reconfiguration-memory"); | ||
26 | if (np) { | ||
27 | const unsigned long *size; | ||
28 | |||
29 | size = of_get_property(np, "ibm,lmb-size", NULL); | ||
30 | memblock_size = size ? *size : 0; | ||
31 | |||
32 | of_node_put(np); | ||
33 | } else { | ||
34 | unsigned int memzero_size = 0; | ||
35 | const unsigned int *regs; | ||
36 | |||
37 | np = of_find_node_by_path("/memory@0"); | ||
38 | if (np) { | ||
39 | regs = of_get_property(np, "reg", NULL); | ||
40 | memzero_size = regs ? regs[3] : 0; | ||
41 | of_node_put(np); | ||
42 | } | ||
43 | |||
44 | if (memzero_size) { | ||
45 | /* We now know the size of memory@0, use this to find | ||
46 | * the first memoryblock and get its size. | ||
47 | */ | ||
48 | char buf[64]; | ||
49 | |||
50 | sprintf(buf, "/memory@%x", memzero_size); | ||
51 | np = of_find_node_by_path(buf); | ||
52 | if (np) { | ||
53 | regs = of_get_property(np, "reg", NULL); | ||
54 | memblock_size = regs ? regs[3] : 0; | ||
55 | of_node_put(np); | ||
56 | } | ||
57 | } | ||
58 | } | ||
59 | |||
60 | return memblock_size; | ||
61 | } | ||
62 | |||
63 | unsigned long memory_block_size_bytes(void) | ||
64 | { | ||
65 | return get_memblock_size(); | ||
66 | } | ||
67 | |||
20 | static int pseries_remove_memblock(unsigned long base, unsigned int memblock_size) | 68 | static int pseries_remove_memblock(unsigned long base, unsigned int memblock_size) |
21 | { | 69 | { |
22 | unsigned long start, start_pfn; | 70 | unsigned long start, start_pfn; |
@@ -127,30 +175,22 @@ static int pseries_add_memory(struct device_node *np) | |||
127 | 175 | ||
128 | static int pseries_drconf_memory(unsigned long *base, unsigned int action) | 176 | static int pseries_drconf_memory(unsigned long *base, unsigned int action) |
129 | { | 177 | { |
130 | struct device_node *np; | 178 | unsigned long memblock_size; |
131 | const unsigned long *lmb_size; | ||
132 | int rc; | 179 | int rc; |
133 | 180 | ||
134 | np = of_find_node_by_path("/ibm,dynamic-reconfiguration-memory"); | 181 | memblock_size = get_memblock_size(); |
135 | if (!np) | 182 | if (!memblock_size) |
136 | return -EINVAL; | 183 | return -EINVAL; |
137 | 184 | ||
138 | lmb_size = of_get_property(np, "ibm,lmb-size", NULL); | ||
139 | if (!lmb_size) { | ||
140 | of_node_put(np); | ||
141 | return -EINVAL; | ||
142 | } | ||
143 | |||
144 | if (action == PSERIES_DRCONF_MEM_ADD) { | 185 | if (action == PSERIES_DRCONF_MEM_ADD) { |
145 | rc = memblock_add(*base, *lmb_size); | 186 | rc = memblock_add(*base, memblock_size); |
146 | rc = (rc < 0) ? -EINVAL : 0; | 187 | rc = (rc < 0) ? -EINVAL : 0; |
147 | } else if (action == PSERIES_DRCONF_MEM_REMOVE) { | 188 | } else if (action == PSERIES_DRCONF_MEM_REMOVE) { |
148 | rc = pseries_remove_memblock(*base, *lmb_size); | 189 | rc = pseries_remove_memblock(*base, memblock_size); |
149 | } else { | 190 | } else { |
150 | rc = -EINVAL; | 191 | rc = -EINVAL; |
151 | } | 192 | } |
152 | 193 | ||
153 | of_node_put(np); | ||
154 | return rc; | 194 | return rc; |
155 | } | 195 | } |
156 | 196 | ||
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c index a08a62cb136e..0aa34669ed3f 100644 --- a/arch/x86/mm/init_64.c +++ b/arch/x86/mm/init_64.c | |||
@@ -51,6 +51,7 @@ | |||
51 | #include <asm/numa.h> | 51 | #include <asm/numa.h> |
52 | #include <asm/cacheflush.h> | 52 | #include <asm/cacheflush.h> |
53 | #include <asm/init.h> | 53 | #include <asm/init.h> |
54 | #include <asm/uv/uv.h> | ||
54 | 55 | ||
55 | static int __init parse_direct_gbpages_off(char *arg) | 56 | static int __init parse_direct_gbpages_off(char *arg) |
56 | { | 57 | { |
@@ -898,6 +899,19 @@ const char *arch_vma_name(struct vm_area_struct *vma) | |||
898 | return NULL; | 899 | return NULL; |
899 | } | 900 | } |
900 | 901 | ||
902 | #ifdef CONFIG_X86_UV | ||
903 | #define MIN_MEMORY_BLOCK_SIZE (1 << SECTION_SIZE_BITS) | ||
904 | |||
905 | unsigned long memory_block_size_bytes(void) | ||
906 | { | ||
907 | if (is_uv_system()) { | ||
908 | printk(KERN_INFO "UV: memory block size 2GB\n"); | ||
909 | return 2UL * 1024 * 1024 * 1024; | ||
910 | } | ||
911 | return MIN_MEMORY_BLOCK_SIZE; | ||
912 | } | ||
913 | #endif | ||
914 | |||
901 | #ifdef CONFIG_SPARSEMEM_VMEMMAP | 915 | #ifdef CONFIG_SPARSEMEM_VMEMMAP |
902 | /* | 916 | /* |
903 | * Initialise the sparsemem vmemmap using huge-pages at the PMD level. | 917 | * Initialise the sparsemem vmemmap using huge-pages at the PMD level. |