Re: [PATCH v1 1/1] ARM: Select DMA_DIRECT_REMAP to fix restricted DMA
From: Christophe Leroy <hidden>
Date: 2023-09-28 16:24:25
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Hi, For the form, Le 26/09/2023 à 19:52, Jim Quinlan a écrit :
Without this commit, the use of dma_alloc_coherent() while
Instead, say "Without selecting DMA_DIRECT_REMAP, the use of ...."
using CONFIG_DMA_RESTRICTED_POOL=y breaks devices from working. For example, the common Wifi 7260 chip (iwlwifi) works fine on arm64 with restricted memory but not on arm, unless this commit is applied.
Say " .... unless DMA_DIRECT_REMAP is selected"
quoted hunk ↗ jump to hunk
Signed-off-by: Jim Quinlan <redacted> --- arch/arm/Kconfig | 1 + 1 file changed, 1 insertion(+)diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 9557808e8937..b6f1cea923cf 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig@@ -34,6 +34,7 @@ config ARM select ARCH_OPTIONAL_KERNEL_RWX_DEFAULT if CPU_V7 select ARCH_SUPPORTS_ATOMIC_RMW select ARCH_SUPPORTS_HUGETLBFS if ARM_LPAE + select DMA_DIRECT_REMAP
On powerpc we try to keep those in alphabetical order. Don't you do the same on ARM ?
select ARCH_USE_BUILTIN_BSWAP select ARCH_USE_CMPXCHG_LOCKREF select ARCH_USE_MEMTEST
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