linux 2.6.16.38 w/ vs2.0.3-rc1

[linux-2.6.git] / arch / powerpc / mm / slb.c

diff --git a/arch/powerpc/mm/slb.c b/arch/powerpc/mm/slb.c
index de0c884..ffc8ed4 100644 (file)
--- a/arch/powerpc/mm/slb.c
+++ b/arch/powerpc/mm/slb.c
@@ -16,6 +16,7 @@
 
 #undef DEBUG
 
+#include <linux/config.h>
 #include <asm/pgtable.h>
 #include <asm/mmu.h>
 #include <asm/mmu_context.h>
@@ -59,19 +60,19 @@ static inline void create_slbe(unsigned long ea, unsigned long flags,
                     : "memory" );
 }
 
-void slb_flush_and_rebolt(void)
+static void slb_flush_and_rebolt(void)
 {
        /* If you change this make sure you change SLB_NUM_BOLTED
         * appropriately too. */
-       unsigned long linear_llp, vmalloc_llp, lflags, vflags;
+       unsigned long linear_llp, virtual_llp, lflags, vflags;
        unsigned long ksp_esid_data;
 
        WARN_ON(!irqs_disabled());
 
        linear_llp = mmu_psize_defs[mmu_linear_psize].sllp;
-       vmalloc_llp = mmu_psize_defs[mmu_vmalloc_psize].sllp;
+       virtual_llp = mmu_psize_defs[mmu_virtual_psize].sllp;
        lflags = SLB_VSID_KERNEL | linear_llp;
-       vflags = SLB_VSID_KERNEL | vmalloc_llp;
+       vflags = SLB_VSID_KERNEL | virtual_llp;
 
        ksp_esid_data = mk_esid_data(get_paca()->kstack, 2);
        if ((ksp_esid_data & ESID_MASK) == PAGE_OFFSET)
@@ -121,6 +122,9 @@ void switch_slb(struct task_struct *tsk, struct mm_struct *mm)
 
        get_paca()->slb_cache_ptr = 0;
        get_paca()->context = mm->context;
+#ifdef CONFIG_PPC_64K_PAGES
+       get_paca()->pgdir = mm->pgd;
+#endif /* CONFIG_PPC_64K_PAGES */
 
        /*
         * preload some userspace segments into the SLB.
@@ -163,10 +167,11 @@ static inline void patch_slb_encoding(unsigned int *insn_addr,
 
 void slb_initialize(void)
 {
-       unsigned long linear_llp, vmalloc_llp, io_llp;
+       unsigned long linear_llp, virtual_llp;
        static int slb_encoding_inited;
        extern unsigned int *slb_miss_kernel_load_linear;
-       extern unsigned int *slb_miss_kernel_load_io;
+       extern unsigned int *slb_miss_kernel_load_virtual;
+       extern unsigned int *slb_miss_user_load_normal;
 #ifdef CONFIG_HUGETLB_PAGE
        extern unsigned int *slb_miss_user_load_huge;
        unsigned long huge_llp;
@@ -176,19 +181,18 @@ void slb_initialize(void)
 
        /* Prepare our SLB miss handler based on our page size */
        linear_llp = mmu_psize_defs[mmu_linear_psize].sllp;
-       io_llp = mmu_psize_defs[mmu_io_psize].sllp;
-       vmalloc_llp = mmu_psize_defs[mmu_vmalloc_psize].sllp;
-       get_paca()->vmalloc_sllp = SLB_VSID_KERNEL | vmalloc_llp;
-
+       virtual_llp = mmu_psize_defs[mmu_virtual_psize].sllp;
        if (!slb_encoding_inited) {
                slb_encoding_inited = 1;
                patch_slb_encoding(slb_miss_kernel_load_linear,
                                   SLB_VSID_KERNEL | linear_llp);
-               patch_slb_encoding(slb_miss_kernel_load_io,
-                                  SLB_VSID_KERNEL | io_llp);
+               patch_slb_encoding(slb_miss_kernel_load_virtual,
+                                  SLB_VSID_KERNEL | virtual_llp);
+               patch_slb_encoding(slb_miss_user_load_normal,
+                                  SLB_VSID_USER | virtual_llp);
 
                DBG("SLB: linear  LLP = %04x\n", linear_llp);
-               DBG("SLB: io      LLP = %04x\n", io_llp);
+               DBG("SLB: virtual LLP = %04x\n", virtual_llp);
 #ifdef CONFIG_HUGETLB_PAGE
                patch_slb_encoding(slb_miss_user_load_huge,
                                   SLB_VSID_USER | huge_llp);
@@ -203,7 +207,7 @@ void slb_initialize(void)
        unsigned long lflags, vflags;
 
        lflags = SLB_VSID_KERNEL | linear_llp;
-       vflags = SLB_VSID_KERNEL | vmalloc_llp;
+       vflags = SLB_VSID_KERNEL | virtual_llp;
 
        /* Invalidate the entire SLB (even slot 0) & all the ERATS */
        asm volatile("isync":::"memory");
@@ -211,6 +215,7 @@ void slb_initialize(void)
        asm volatile("isync; slbia; isync":::"memory");
        create_slbe(PAGE_OFFSET, lflags, 0);
 
+       /* VMALLOC space has 4K pages always for now */
        create_slbe(VMALLOC_START, vflags, 1);
 
        /* We don't bolt the stack for the time being - we're in boot,