Messages in this thread | | | Date | Mon, 24 Sep 2018 21:44:21 -0700 | From | Matthew Wilcox <> | Subject | Re: block: DMA alignment of IO buffer allocated from slab |
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On Mon, Sep 24, 2018 at 09:10:43PM -0700, Bart Van Assche wrote: > On 9/24/18 8:28 PM, Matthew Wilcox wrote: > > [ ... ] Because if we have to > > round all allocations below 64 bytes up to 64 bytes, [ ... ] > Have you noticed that in another e-mail in this thread it has been explained > why it is not necessary on x86 to align buffers allocated by kmalloc() on a > 64-byte boundary even if these buffers are used for DMA?
Oh, so drivers which do this only break on !x86. Yes, that'll work out great.
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