Dan Williams wrote: > async_xor() needs space to perform dma and page address conversions. In > most cases the code can simply reuse the struct page * array because the > size of the native pointer matches the size of a dma/page address. In > order to support archs where sizeof(dma_addr_t) is larger than > sizeof(struct page *), or to preserve the input parameters, we utilize a > memory region passed in by the caller. > > Since the code is now prepared to handle the case where it cannot > perform address conversions on the stack, we no longer need the > !HIGHMEM64G dependency in drivers/dma/Kconfig. > > [ Impact: don't clobber input buffers for address conversions ] > > Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx> > --- > crypto/async_tx/async_xor.c | 59 ++++++++++++++++++++----------------------- > drivers/dma/Kconfig | 2 + > 2 files changed, 29 insertions(+), 32 deletions(-) Acked-by: Maciej Sosnowski <maciej.sosnowski@xxxxxxxxx>-- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
