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-rw-r--r--arch/powerpc/Kconfig13
-rw-r--r--arch/powerpc/kernel/iommu.c7
2 files changed, 1 insertions, 19 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 8a54eb8e376..2e19500921f 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -313,19 +313,6 @@ config 8XX_MINIMAL_FPEMU
It is recommended that you build a soft-float userspace instead.
-config IOMMU_VMERGE
- bool "Enable IOMMU virtual merging"
- depends on PPC64
- default y
- help
- Cause IO segments sent to a device for DMA to be merged virtually
- by the IOMMU when they happen to have been allocated contiguously.
- This doesn't add pressure to the IOMMU allocator. However, some
- drivers don't support getting large merged segments coming back
- from *_map_sg().
-
- Most drivers don't have this problem; it is safe to say Y here.
-
config IOMMU_HELPER
def_bool PPC64
diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
index 5547ae6e6b0..ec94f906ea4 100644
--- a/arch/powerpc/kernel/iommu.c
+++ b/arch/powerpc/kernel/iommu.c
@@ -42,12 +42,7 @@
#define DBG(...)
-#ifdef CONFIG_IOMMU_VMERGE
-static int novmerge = 0;
-#else
-static int novmerge = 1;
-#endif
-
+static int novmerge;
static int protect4gb = 1;
static void __iommu_free(struct iommu_table *, dma_addr_t, unsigned int);