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| author |   Christoph Hellwig <hch@lst.de> | 2019-08-14 15:22:30 +0200 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2019-08-28 23:19:34 +1000 |
| commit | f2902a2fb40c589b886d21518ef8a1ee87f76b0c (patch) | |
| tree | 950d047295b7ddb64ca2edcdeff04b222ab91aef /arch/powerpc/Kconfig | |
| parent | powerpc/64: remove support for kernel-mode syscalls (diff) | |
| download | wireguard-linux-f2902a2fb40c589b886d21518ef8a1ee87f76b0c.tar.xz wireguard-linux-f2902a2fb40c589b886d21518ef8a1ee87f76b0c.zip | |
powerpc: use the generic dma coherent remap allocator
This switches to using common code for the DMA allocations, including
potential use of the CMA allocator if configured.
Switching to the generic code enables DMA allocations from atomic
context, which is required by the DMA API documentation, and also
adds various other minor features drivers start relying upon. It
also makes sure we have on tested code base for all architectures
that require uncached pte bits for coherent DMA allocations.
Another advantage is that consistent memory allocations now share
the general vmalloc pool instead of needing an explicit careout
from it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Christophe Leroy <christophe.leroy@c-s.fr> # tested on 8xx
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190814132230.31874-2-hch@lst.de
Diffstat (limited to 'arch/powerpc/Kconfig')
| -rw-r--r-- | arch/powerpc/Kconfig | 12 |
1 files changed, 0 insertions, 12 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index cfb21856559b..edc19363a729 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -1141,18 +1141,6 @@ config TASK_SIZE default "0x80000000" if PPC_8xx default "0xc0000000" -config CONSISTENT_SIZE_BOOL - bool "Set custom consistent memory pool size" - depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE - help - This option allows you to set the size of the - consistent memory pool. This pool of virtual memory - is used to make consistent memory allocations. - -config CONSISTENT_SIZE - hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL - default "0x00200000" if NOT_COHERENT_CACHE - config PIN_TLB bool "Pinned Kernel TLBs (860 ONLY)" depends on ADVANCED_OPTIONS && PPC_8xx && \ |