Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq

[pandora-kernel.git] / arch / powerpc / mm / fsl_booke_mmu.c

diff --git a/arch/powerpc/mm/fsl_booke_mmu.c b/arch/powerpc/mm/fsl_booke_mmu.c
index 4b66a1e..f7802c8 100644 (file)
--- a/arch/powerpc/mm/fsl_booke_mmu.c
+++ b/arch/powerpc/mm/fsl_booke_mmu.c
@@ -40,6 +40,7 @@
 #include <linux/init.h>
 #include <linux/delay.h>
 #include <linux/highmem.h>
+#include <linux/memblock.h>
 
 #include <asm/pgalloc.h>
 #include <asm/prom.h>
@@ -56,11 +57,6 @@
 
 unsigned int tlbcam_index;
 
-
-#if defined(CONFIG_LOWMEM_CAM_NUM_BOOL) && (CONFIG_LOWMEM_CAM_NUM >= NUM_TLBCAMS)
-#error "LOWMEM_CAM_NUM must be less than NUM_TLBCAMS"
-#endif
-
 #define NUM_TLBCAMS    (64)
 struct tlbcam TLBCAM[NUM_TLBCAMS];
 
@@ -137,7 +133,8 @@ static void settlbcam(int index, unsigned long virt, phys_addr_t phys,
        if (mmu_has_feature(MMU_FTR_BIG_PHYS))
                TLBCAM[index].MAS7 = (u64)phys >> 32;
 
-       if (flags & _PAGE_USER) {
+       /* Below is unlikely -- only for large user pages or similar */
+       if (pte_user(flags)) {
           TLBCAM[index].MAS3 |= MAS3_UX | MAS3_UR;
           TLBCAM[index].MAS3 |= ((flags & _PAGE_RW) ? MAS3_UW : 0);
        }
@@ -184,6 +181,12 @@ unsigned long map_mem_in_cams(unsigned long ram, int max_cam_idx)
        return amount_mapped;
 }
 
+#ifdef CONFIG_PPC32
+
+#if defined(CONFIG_LOWMEM_CAM_NUM_BOOL) && (CONFIG_LOWMEM_CAM_NUM >= NUM_TLBCAMS)
+#error "LOWMEM_CAM_NUM must be less than NUM_TLBCAMS"
+#endif
+
 unsigned long __init mmu_mapin_ram(unsigned long top)
 {
        return tlbcam_addrs[tlbcam_index - 1].limit - PAGE_OFFSET + 1;
@@ -213,5 +216,15 @@ void __init adjust_total_lowmem(void)
        pr_cont("%lu Mb, residual: %dMb\n", tlbcam_sz(tlbcam_index - 1) >> 20,
                (unsigned int)((total_lowmem - __max_low_memory) >> 20));
 
-       __initial_memory_limit_addr = memstart_addr + __max_low_memory;
+       memblock_set_current_limit(memstart_addr + __max_low_memory);
 }
+
+void setup_initial_memory_limit(phys_addr_t first_memblock_base,
+                               phys_addr_t first_memblock_size)
+{
+       phys_addr_t limit = first_memblock_base + first_memblock_size;
+
+       /* 64M mapped initially according to head_fsl_booke.S */
+       memblock_set_current_limit(min_t(u64, limit, 0x04000000));
+}
+#endif