[SPARC64]: Do not allocate prom translations using bootmem.

Use __initdata instead.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 26 insertions, 28 deletions

diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c
index aaf9a3eee997..141d4cc5fc53 100644
--- a/arch/sparc64/mm/init.c
+++ b/arch/sparc64/mm/init.c
@@ -310,6 +310,7 @@ struct linux_prom_translation {
         unsigned long size;
         unsigned long data;
 };
+static struct linux_prom_translation prom_trans[512] __initdata;
 
 extern unsigned long prom_boot_page;
 extern void prom_remap(unsigned long physpage, unsigned long virtpage, int mmu_ihandle);
@@ -363,7 +364,6 @@ unsigned long prom_virt_to_phys(unsigned long promva, int *error)
 
 static void inherit_prom_mappings(void)
 {
-        struct linux_prom_translation *trans;
         unsigned long phys_page, tte_vaddr, tte_data;
         void (*remap_func)(unsigned long, unsigned long, int);
         pmd_t *pmdp;
@@ -373,30 +373,27 @@ static void inherit_prom_mappings(void)
         node = prom_finddevice("/virtual-memory");
         n = prom_getproplen(node, "translations");
         if (n == 0 || n == -1) {
-                prom_printf("Couldn't get translation property\n");
+                prom_printf("prom_mappings: Couldn't get size.\n");
                 prom_halt();
         }
-        n += 5 * sizeof(struct linux_prom_translation);
-        for (tsz = 1; tsz < n; tsz <<= 1)
-                /* empty */;
-        trans = __alloc_bootmem(tsz, SMP_CACHE_BYTES, bootmap_base);
-        if (trans == NULL) {
-                prom_printf("inherit_prom_mappings: Cannot alloc translations.\n");
+        n += 24 * sizeof(struct linux_prom_translation);
+        if (n > sizeof(prom_trans)) {
+                prom_printf("prom_mappings: prom_trans too small, "
+                            "need %Zd bytes\n", n);
                 prom_halt();
         }
-        memset(trans, 0, tsz);
-
-        if ((n = prom_getproperty(node, "translations", (char *)trans, tsz)) == -1) {
-                prom_printf("Couldn't get translation property\n");
+        tsz = n;
+        if ((n = prom_getproperty(node, "translations",
+                                  (char *)&prom_trans[0], tsz)) == -1) {
+                prom_printf("prom_mappings: Couldn't get property.\n");
                 prom_halt();
         }
-        n = n / sizeof(*trans);
+        n = n / sizeof(struct linux_prom_translation);
 
-        /*
-         * The obp translations are saved based on 8k pagesize, since obp can
-         * use a mixture of pagesizes. Misses to the 0xf0000000 - 0x100000000,
-         * ie obp range, are handled in entry.S and do not use the vpte scheme
-         * (see rant in inherit_locked_prom_mappings()).
+        /* The obp translations are saved based on 8k pagesize, since obp
+         * can use a mixture of pagesizes. Misses to the 0xf0000000 ->
+         * 0x100000000, ie obp range, are handled in entry.S and do not
+         * use the vpte scheme (see rant: inherit_locked_prom_mappings).
          */
 #define OBP_PMD_SIZE 2048
         prompmd = __alloc_bootmem(OBP_PMD_SIZE, OBP_PMD_SIZE, bootmap_base);
@@ -406,9 +403,9 @@ static void inherit_prom_mappings(void)
         for (i = 0; i < n; i++) {
                 unsigned long vaddr;
 
-                if (trans[i].virt >= LOW_OBP_ADDRESS && trans[i].virt < HI_OBP_ADDRESS) {
-                        for (vaddr = trans[i].virt;
-                             ((vaddr < trans[i].virt + trans[i].size) && 
+                if (prom_trans[i].virt >= LOW_OBP_ADDRESS && prom_trans[i].virt < HI_OBP_ADDRESS) {
+                        for (vaddr = prom_trans[i].virt;
+                             ((vaddr < prom_trans[i].virt + prom_trans[i].size) && 
                              (vaddr < HI_OBP_ADDRESS));
                              vaddr += BASE_PAGE_SIZE) {
                                 unsigned long val;
@@ -426,7 +423,7 @@ static void inherit_prom_mappings(void)
                                 ptep = (pte_t *)__pmd_page(*pmdp) +
                                                 ((vaddr >> 13) & 0x3ff);
 
-                                val = trans[i].data;
+                                val = prom_trans[i].data;
 
                                 /* Clear diag TTE bits. */
                                 if (tlb_type == spitfire)
@@ -434,7 +431,7 @@ static void inherit_prom_mappings(void)
 
                                 set_pte_at(&init_mm, vaddr,
                                            ptep, __pte(val | _PAGE_MODIFIED));
-                                trans[i].data += BASE_PAGE_SIZE;
+                                prom_trans[i].data += BASE_PAGE_SIZE;
                         }
                 }
         }
@@ -571,15 +568,16 @@ static void inherit_prom_mappings(void)
         }
 
         /* Re-read translations property. */
-        if ((n = prom_getproperty(node, "translations", (char *)trans, tsz)) == -1) {
-                prom_printf("Couldn't get translation property\n");
+        if ((n = prom_getproperty(node, "translations",
+                                  (char *)&prom_trans[0], tsz)) == -1) {
+                prom_printf("prom_mappings: Can't reread prom_trans.\n");
                 prom_halt();
         }
-        n = n / sizeof(*trans);
+        n = n / sizeof(struct linux_prom_translation);
 
         for (i = 0; i < n; i++) {
-                unsigned long vaddr = trans[i].virt;
-                unsigned long size = trans[i].size;
+                unsigned long vaddr = prom_trans[i].virt;
+                unsigned long size = prom_trans[i].size;
 
                 if (vaddr < 0xf0000000UL) {
                         unsigned long avoid_start = (unsigned long) KERNBASE;