sparc64: Increase vmalloc size to fix percpu regressions.

Since we now use the embedding percpu allocator we have to make the
vmalloc area at least as large as the stretch can be between nodes.

Besides some minor asm adjustments, this turned out to be pretty
trivial.

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

diff --git a/arch/sparc/include/asm/pgtable_64.h b/arch/sparc/include/asm/pgtable_64.h
index 0ff92fa..f3cb790 100644 (file)
--- a/arch/sparc/include/asm/pgtable_64.h
+++ b/arch/sparc/include/asm/pgtable_64.h
@@ -41,8 +41,8 @@
 #define LOW_OBP_ADDRESS                _AC(0x00000000f0000000,UL)
 #define HI_OBP_ADDRESS         _AC(0x0000000100000000,UL)
 #define VMALLOC_START          _AC(0x0000000100000000,UL)
-#define VMALLOC_END            _AC(0x0000000200000000,UL)
-#define VMEMMAP_BASE           _AC(0x0000000200000000,UL)
+#define VMALLOC_END            _AC(0x0000010000000000,UL)
+#define VMEMMAP_BASE           _AC(0x0000010000000000,UL)
 
 #define vmemmap                        ((struct page *)VMEMMAP_BASE)
 

diff --git a/arch/sparc/kernel/ktlb.S b/arch/sparc/kernel/ktlb.S
index 3ea6e8c..1d36147 100644 (file)
--- a/arch/sparc/kernel/ktlb.S
+++ b/arch/sparc/kernel/ktlb.S
@@ -280,8 +280,8 @@ kvmap_dtlb_nonlinear:
 
 #ifdef CONFIG_SPARSEMEM_VMEMMAP
        /* Do not use the TSB for vmemmap.  */
-       mov             (VMEMMAP_BASE >> 24), %g5
-       sllx            %g5, 24, %g5
+       mov             (VMEMMAP_BASE >> 40), %g5
+       sllx            %g5, 40, %g5
        cmp             %g4,%g5
        bgeu,pn         %xcc, kvmap_vmemmap
         nop
@@ -293,8 +293,8 @@ kvmap_dtlb_tsbmiss:
        sethi           %hi(MODULES_VADDR), %g5
        cmp             %g4, %g5
        blu,pn          %xcc, kvmap_dtlb_longpath
-        mov            (VMALLOC_END >> 24), %g5
-       sllx            %g5, 24, %g5
+        mov            (VMALLOC_END >> 40), %g5
+       sllx            %g5, 40, %g5
        cmp             %g4, %g5
        bgeu,pn         %xcc, kvmap_dtlb_longpath
         nop