[SPARC64]: Increase swapper_tsb size to 32K.

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

diff --git a/arch/sparc64/kernel/head.S b/arch/sparc64/kernel/head.S
index 2988be85147c0c72c0c4100561341d54d5e5ff55..7840271d7aae729d067a19582f64d362ddddb65e 100644 (file)
--- a/arch/sparc64/kernel/head.S
+++ b/arch/sparc64/kernel/head.S
@@ -484,16 +484,16 @@ sparc64_boot_end:
 /*
  * The following skip makes sure the trap table in ttable.S is aligned
  * on a 32K boundary as required by the v9 specs for TBA register.
+ *
+ * We align to a 32K boundary, then we have the 32K kernel TSB,
+ * then the 32K aligned trap table.
  */
 1:
        .skip   0x4000 + _start - 1b
 
-#ifdef CONFIG_SBUS
-/* This is just a hack to fool make depend config.h discovering
-   strategy: As the .S files below need config.h, but
-   make depend does not find it for them, we include config.h
-   in head.S */
-#endif
+       .globl  swapper_tsb
+swapper_tsb:
+       .skip   (32 * 1024)
 
 ! 0x0000000000408000
 

diff --git a/arch/sparc64/kernel/vmlinux.lds.S b/arch/sparc64/kernel/vmlinux.lds.S
index f018aaf4548601dc777be93914d3c20341135629..467d13a0d5c1314fa99c645ac62f5699ee7cb3d3 100644 (file)
--- a/arch/sparc64/kernel/vmlinux.lds.S
+++ b/arch/sparc64/kernel/vmlinux.lds.S
@@ -43,9 +43,6 @@ SECTIONS
   __ex_table : { *(__ex_table) }
   __stop___ex_table = .;
 
-  . = ALIGN(8192);
-  swapper_tsb = .;
-  . += 8192;
   . = ALIGN(8192);
   __init_begin = .;
   .init.text : { 

diff --git a/arch/sparc64/mm/tsb.c b/arch/sparc64/mm/tsb.c
index e605478217c273717df7e3750ccdad140704732b..1c4e5c2dfc5377675789f1728c9197f17fb61ec0 100644 (file)
--- a/arch/sparc64/mm/tsb.c
+++ b/arch/sparc64/mm/tsb.c
@@ -12,14 +12,6 @@
 #include <asm/pgtable.h>
 #include <asm/tsb.h>
 
-/* We use an 8K TSB for the whole kernel, this allows to
- * handle about 4MB of modules and vmalloc mappings without
- * incurring many hash conflicts.
- */
-#define KERNEL_TSB_SIZE_BYTES  8192
-#define KERNEL_TSB_NENTRIES \
-       (KERNEL_TSB_SIZE_BYTES / sizeof(struct tsb))
-
 extern struct tsb swapper_tsb[KERNEL_TSB_NENTRIES];
 
 static inline unsigned long tsb_hash(unsigned long vaddr, unsigned long nentries)

diff --git a/include/asm-sparc64/tsb.h b/include/asm-sparc64/tsb.h
index 09ab3aaa8d20049b6b8580db18b8496a9479cc74..1addd91d720062d614bd9f5db525e87517932f8e 100644 (file)
--- a/include/asm-sparc64/tsb.h
+++ b/include/asm-sparc64/tsb.h
@@ -143,6 +143,14 @@
         add            REG1, (3 * 8), REG1; \
 99:
 
+       /* We use a 32K TSB for the whole kernel, this allows to
+        * handle about 16MB of modules and vmalloc mappings without
+        * incurring many hash conflicts.
+        */
+#define KERNEL_TSB_SIZE_BYTES  (32 * 1024)
+#define KERNEL_TSB_NENTRIES    \
+       (KERNEL_TSB_SIZE_BYTES / 16)
+
        /* Do a kernel TSB lookup at tl>0 on VADDR+TAG, branch to OK_LABEL
         * on TSB hit.  REG1, REG2, REG3, and REG4 are used as temporaries
         * and the found TTE will be left in REG1.  REG3 and REG4 must
@@ -150,12 +158,11 @@
         *
         * VADDR and TAG will be preserved and not clobbered by this macro.
         */
-       /* XXX non-8K base page size support... */
 #define KERN_TSB_LOOKUP_TL1(VADDR, TAG, REG1, REG2, REG3, REG4, OK_LABEL) \
        sethi           %hi(swapper_tsb), REG1; \
        or              REG1, %lo(swapper_tsb), REG1; \
-       srlx            VADDR, 13, REG2; \
-       and             REG2, (512 - 1), REG2; \
+       srlx            VADDR, PAGE_SHIFT, REG2; \
+       and             REG2, (KERNEL_TSB_NENTRIES - 1), REG2; \
        sllx            REG2, 4, REG2; \
        add             REG1, REG2, REG2; \
        ldda            [REG2] ASI_NUCLEUS_QUAD_LDD, REG3; \