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| author | Robin Murphy <robin.murphy@arm.com> | 2023-01-12 20:59:47 +0100 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2023-01-13 16:59:48 +0100 |
| commit | d286a58bc8f4d5cf3246481b4e38e4c0c65550ac (patch) | |
| tree | e100a205001dcdf97424df2a1534d9b0fac3220b /drivers/iommu | |
| parent | iommu: Remove detach_dev callback (diff) | |
| download | linux-d286a58bc8f4d5cf3246481b4e38e4c0c65550ac.tar.xz linux-d286a58bc8f4d5cf3246481b4e38e4c0c65550ac.zip | |
iommu: Tidy up io-pgtable dependencies
Some io-pgtable implementations, and thus their users too, carry a
slightly odd dependency to get around the GENERIC_ATOMIC64 version of
cmpxchg64() often failing to compile. Since this is a functional
dependency, it's a bit misleading and untidy to tie it explicitly to
COMPILE_TEST while assuming that it's also implied by the other
platform/architecture options. Make things clearer by separating these
functional dependencies into distinct statements from those controlling
visibility, and since they do look a bit non-obvious to the uninitiated,
also commenting them for good measure.
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/51d8c78e2ecc6696ac5907526580209ea6da167f.1673553587.git.robin.murphy@arm.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/Kconfig | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig index 79707685d54a..889c7efd050b 100644 --- a/drivers/iommu/Kconfig +++ b/drivers/iommu/Kconfig @@ -32,7 +32,8 @@ config IOMMU_IO_PGTABLE config IOMMU_IO_PGTABLE_LPAE bool "ARMv7/v8 Long Descriptor Format" select IOMMU_IO_PGTABLE - depends on ARM || ARM64 || (COMPILE_TEST && !GENERIC_ATOMIC64) + depends on ARM || ARM64 || COMPILE_TEST + depends on !GENERIC_ATOMIC64 # for cpmxchg64() help Enable support for the ARM long descriptor pagetable format. This allocator supports 4K/2M/1G, 16K/32M and 64K/512M page @@ -70,7 +71,8 @@ config IOMMU_IO_PGTABLE_ARMV7S_SELFTEST config IOMMU_IO_PGTABLE_DART bool "Apple DART Formats" select IOMMU_IO_PGTABLE - depends on ARM64 || (COMPILE_TEST && !GENERIC_ATOMIC64) + depends on ARM64 || COMPILE_TEST + depends on !GENERIC_ATOMIC64 # for cpmxchg64() help Enable support for the Apple DART pagetable formats. These include the t8020 and t6000/t8110 DART formats used in Apple M1/M2 family @@ -284,7 +286,8 @@ config EXYNOS_IOMMU_DEBUG config IPMMU_VMSA bool "Renesas VMSA-compatible IPMMU" - depends on ARCH_RENESAS || (COMPILE_TEST && !GENERIC_ATOMIC64) + depends on ARCH_RENESAS || COMPILE_TEST + depends on !GENERIC_ATOMIC64 # for IOMMU_IO_PGTABLE_LPAE select IOMMU_API select IOMMU_IO_PGTABLE_LPAE select ARM_DMA_USE_IOMMU @@ -304,7 +307,8 @@ config SPAPR_TCE_IOMMU config APPLE_DART tristate "Apple DART IOMMU Support" - depends on ARCH_APPLE || (COMPILE_TEST && !GENERIC_ATOMIC64) + depends on ARCH_APPLE || COMPILE_TEST + depends on !GENERIC_ATOMIC64 # for IOMMU_IO_PGTABLE_DART select IOMMU_API select IOMMU_IO_PGTABLE_DART default ARCH_APPLE @@ -319,7 +323,8 @@ config APPLE_DART # ARM IOMMU support config ARM_SMMU tristate "ARM Ltd. System MMU (SMMU) Support" - depends on ARM64 || ARM || (COMPILE_TEST && !GENERIC_ATOMIC64) + depends on ARM64 || ARM || COMPILE_TEST + depends on !GENERIC_ATOMIC64 # for IOMMU_IO_PGTABLE_LPAE select IOMMU_API select IOMMU_IO_PGTABLE_LPAE select ARM_DMA_USE_IOMMU if ARM @@ -466,7 +471,8 @@ config MTK_IOMMU_V1 config QCOM_IOMMU # Note: iommu drivers cannot (yet?) be built as modules bool "Qualcomm IOMMU Support" - depends on ARCH_QCOM || (COMPILE_TEST && !GENERIC_ATOMIC64) + depends on ARCH_QCOM || COMPILE_TEST + depends on !GENERIC_ATOMIC64 # for IOMMU_IO_PGTABLE_LPAE select QCOM_SCM select IOMMU_API select IOMMU_IO_PGTABLE_LPAE |