AMD IOMMU: add stats counter for map_sg requests

[karo-tx-linux.git] / arch / ia64 / kernel / patch.c

diff --git a/arch/ia64/kernel/patch.c b/arch/ia64/kernel/patch.c
index e0dca8743dbb11b87031b7ec9e8e845638a7bb4a..b83b2c516008d4cdac5db340a53c74dfa8f4444a 100644 (file)
--- a/arch/ia64/kernel/patch.c
+++ b/arch/ia64/kernel/patch.c
@@ -115,6 +115,29 @@ ia64_patch_vtop (unsigned long start, unsigned long end)
        ia64_srlz_i();
 }
 
+/*
+ * Disable the RSE workaround by turning the conditional branch
+ * that we tagged in each place the workaround was used into an
+ * unconditional branch.
+ */
+void __init
+ia64_patch_rse (unsigned long start, unsigned long end)
+{
+       s32 *offp = (s32 *) start;
+       u64 ip, *b;
+
+       while (offp < (s32 *) end) {
+               ip = (u64) offp + *offp;
+
+               b = (u64 *)(ip & -16);
+               b[1] &= ~0xf800000L;
+               ia64_fc((void *) ip);
+               ++offp;
+       }
+       ia64_sync_i();
+       ia64_srlz_i();
+}
+
 void __init
 ia64_patch_mckinley_e9 (unsigned long start, unsigned long end)
 {