Re: [PATCH 3/3] csky: Support kernel non-aligned access

2019-08-20 Thread Guo Ren
Thx Christoph On Wed, Aug 21, 2019 at 10:17 AM Christoph Hellwig wrote: > > On Tue, Aug 20, 2019 at 08:34:29PM +0800, guo...@kernel.org wrote: > > From: Guo Ren > > > > We prohibit non-aligned access in kernel mode, but some special NIC > > driver needs to support kernel-state unaligned access.

Re: [PATCH 3/3] csky: Support kernel non-aligned access

2019-08-20 Thread Christoph Hellwig
On Tue, Aug 20, 2019 at 08:34:29PM +0800, guo...@kernel.org wrote: > From: Guo Ren > > We prohibit non-aligned access in kernel mode, but some special NIC > driver needs to support kernel-state unaligned access. For example, > when the bus does not support unaligned access, IP header parsing >

[PATCH 3/3] csky: Support kernel non-aligned access

2019-08-20 Thread guoren
From: Guo Ren We prohibit non-aligned access in kernel mode, but some special NIC driver needs to support kernel-state unaligned access. For example, when the bus does not support unaligned access, IP header parsing will cause non-aligned access and driver does not recopy the skb buffer to dma