Re: block: DMA alignment of IO buffer allocated from slab

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



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.



[Index of Archives]     [Linux Ext4 Filesystem]     [Union Filesystem]     [Filesystem Testing]     [Ceph Users]     [Ecryptfs]     [AutoFS]     [Kernel Newbies]     [Share Photos]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux Cachefs]     [Reiser Filesystem]     [Linux RAID]     [Samba]     [Device Mapper]     [CEPH Development]

  Powered by Linux