This way we have one central definition of it, and user can select it as
needed.
Signed-off-by: Christoph Hellwig <h...@lst.de>
Reviewed-by: Anshuman Khandual <khand...@linux.vnet.ibm.com>
---
arch/powerpc/Kconfig | 4 +---
arch/s390/Kconfig | 5 ++---
arch/sparc/Kconfig | 5 +----
arch/x86/Kconfig | 6 ++----
lib/Kconfig | 3 +++
5 files changed, 9 insertions(+), 14 deletions(-)
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 43e3c8e4e7f4..7698cf89af9c 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -223,6 +223,7 @@ config PPC
select HAVE_SYSCALL_TRACEPOINTS
select HAVE_VIRT_CPU_ACCOUNTING
select HAVE_IRQ_TIME_ACCOUNTING
+ select IOMMU_HELPER if PPC64
select IRQ_DOMAIN
select IRQ_FORCED_THREADING
select MODULES_USE_ELF_RELA
@@ -478,9 +479,6 @@ config MPROFILE_KERNEL
depends on PPC64 && CPU_LITTLE_ENDIAN
def_bool !DISABLE_MPROFILE_KERNEL
-config IOMMU_HELPER
- def_bool PPC64
-
config SWIOTLB
bool "SWIOTLB support"
default n
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 199ac3e4da1d..60c4ab854182 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -709,7 +709,9 @@ config QDIO
menuconfig PCI
bool "PCI support"
select PCI_MSI
+ select IOMMU_HELPER
select IOMMU_SUPPORT
+
help
Enable PCI support.
@@ -733,9 +735,6 @@ config PCI_DOMAINS
config HAS_IOMEM
def_bool PCI
-config IOMMU_HELPER
- def_bool PCI
-
config NEED_SG_DMA_LENGTH
def_bool PCI
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 8767e45f1b2b..44e0f3cd7988 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -67,6 +67,7 @@ config SPARC64
select HAVE_SYSCALL_TRACEPOINTS
select HAVE_CONTEXT_TRACKING
select HAVE_DEBUG_KMEMLEAK
+ select IOMMU_HELPER
select SPARSE_IRQ
select RTC_DRV_CMOS
select RTC_DRV_BQ4802
@@ -106,10 +107,6 @@ config ARCH_DMA_ADDR_T_64BIT
bool
default y if ARCH_ATU
-config IOMMU_HELPER
- bool
- default y if SPARC64
-
config STACKTRACE_SUPPORT
bool
default y if SPARC64
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index cb2c7ecc1fea..fe9713539166 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -871,6 +871,7 @@ config DMI
config GART_IOMMU
bool "Old AMD GART IOMMU support"
+ select IOMMU_HELPER
select SWIOTLB
depends on X86_64 && PCI && AMD_NB
---help---
@@ -892,6 +893,7 @@ config GART_IOMMU
config CALGARY_IOMMU
bool "IBM Calgary IOMMU support"
+ select IOMMU_HELPER
select SWIOTLB
depends on X86_64 && PCI
---help---
@@ -929,10 +931,6 @@ config SWIOTLB
with more than 3 GB of memory.
If unsure, say Y.
-config IOMMU_HELPER
- def_bool y
- depends on CALGARY_IOMMU || GART_IOMMU
-
config MAXSMP
bool "Enable Maximum number of SMP Processors and NUMA Nodes"
depends on X86_64 && SMP && DEBUG_KERNEL
diff --git a/lib/Kconfig b/lib/Kconfig
index 5fe577673b98..2f6908577534 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -429,6 +429,9 @@ config SGL_ALLOC
bool
default n
+config IOMMU_HELPER
+ bool
+
config DMA_DIRECT_OPS
bool
depends on HAS_DMA && (!64BIT || ARCH_DMA_ADDR_T_64BIT)
--
2.17.0
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
