[SPARC64]: Use sparc64_highest_unlocked_tlb_ent in __tsb_context_switch()

Instead of ugly hard-coded value.

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

diff --git a/arch/sparc64/kernel/tsb.S b/arch/sparc64/kernel/tsb.S
index 08405ed69288ee82a2aa7e67d83b610a7eacf846..c1532292a625e5fa78b427476e3bdf7cbeda220b 100644 (file)
--- a/arch/sparc64/kernel/tsb.S
+++ b/arch/sparc64/kernel/tsb.S
@@ -185,12 +185,14 @@ __tsb_context_switch:
         *
         * XXX Interactions with prom_world()...
         */
-       mov             TLB_TAG_ACCESS, %g1
-       stxa            %o2, [%g1] ASI_DMMU
-       membar          #Sync
-       mov             (61 << 3), %g1
-       stxa            %o3, [%g1] ASI_DTLB_DATA_ACCESS
-       membar          #Sync
+       sethi   %hi(sparc64_highest_unlocked_tlb_ent), %o4
+       mov     TLB_TAG_ACCESS, %g1
+       lduw    [%o4 + %lo(sparc64_highest_unlocked_tlb_ent)], %g2
+       stxa    %o2, [%g1] ASI_DMMU
+       membar  #Sync
+       sllx    %g2, 3, %g2
+       stxa    %o3, [%g2] ASI_DTLB_DATA_ACCESS
+       membar  #Sync
 9:
        wrpr    %o5, %pstate