On 6/9/22 17:43, Heiko Stuebner wrote: > diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig > index 32ffef9f6e5b..384d0c15f2b6 100644 > --- a/arch/riscv/Kconfig > +++ b/arch/riscv/Kconfig > @@ -376,6 +376,21 @@ config RISCV_ISA_SVPBMT > > If you don't know what to do here, say Y. > > +config RISCV_ISA_ZICBOM > + bool "Zicbom extension support for non-coherent dma operation" > + select ARCH_HAS_DMA_PREP_COHERENT > + select ARCH_HAS_SYNC_DMA_FOR_DEVICE > + select ARCH_HAS_SYNC_DMA_FOR_CPU > + select ARCH_HAS_SETUP_DMA_OPS > + select DMA_DIRECT_REMAP > + select RISCV_ALTERNATIVE Since RISCV_ALTERNATIVE depends on !XIP_KERNEL and since 'select' does not follow any dependency chains, this config also needs to depend on !XIP_KERNEL. > + default y > + help > + Adds support to dynamically detect the presence of the ZICBOM extension > + (Cache Block Management Operations) and enable its usage. > + > + If you don't know what to do here, say Y. -- ~Randy
