1 files changed, 14 insertions, 0 deletions

diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c
index a77bcaed80af..fa2906a103dd 100644
--- a/arch/powerpc/platforms/pseries/iommu.c
+++ b/arch/powerpc/platforms/pseries/iommu.c
@@ -622,3 +622,17 @@ void iommu_init_early_pSeries(void)
         set_pci_dma_ops(&dma_iommu_ops);
 }
 
+static int __init disable_multitce(char *str)
+{
+        if (strcmp(str, "off") == 0 &&
+            firmware_has_feature(FW_FEATURE_LPAR) &&
+            firmware_has_feature(FW_FEATURE_MULTITCE)) {
+                printk(KERN_INFO "Disabling MULTITCE firmware feature\n");
+                ppc_md.tce_build = tce_build_pSeriesLP;
+                ppc_md.tce_free  = tce_free_pSeriesLP;
+                powerpc_firmware_features &= ~FW_FEATURE_MULTITCE;
+        }
+        return 1;
+}
+
+__setup("multitce=", disable_multitce);