Re: [Xen-devel] [PATCH v1 1/1] xen/arm: Map mmio-sram nodes as cached memory

2016-12-21 Thread Stefano Stabellini
On Wed, 21 Dec 2016, Julien Grall wrote: > Hi Edgar, > > On 20/12/2016 13:53, Edgar E. Iglesias wrote: > > On Mon, Dec 19, 2016 at 04:01:00PM -0800, Stefano Stabellini wrote: > > > On Mon, 19 Dec 2016, Julien Grall wrote: > > > > Hi Edgar, > > > > > > > > On 16/12/2016 18:04, Edgar E. Iglesias wr

Re: [Xen-devel] [PATCH v1 1/1] xen/arm: Map mmio-sram nodes as cached memory

2016-12-21 Thread Julien Grall
Hi Edgar, On 20/12/2016 13:53, Edgar E. Iglesias wrote: On Mon, Dec 19, 2016 at 04:01:00PM -0800, Stefano Stabellini wrote: On Mon, 19 Dec 2016, Julien Grall wrote: Hi Edgar, On 16/12/2016 18:04, Edgar E. Iglesias wrote: On Fri, Dec 16, 2016 at 04:12:00PM +, Julien Grall wrote: On 15/12

Re: [Xen-devel] [PATCH v1 1/1] xen/arm: Map mmio-sram nodes as cached memory

2016-12-20 Thread Edgar E. Iglesias
On Mon, Dec 19, 2016 at 04:01:00PM -0800, Stefano Stabellini wrote: > On Mon, 19 Dec 2016, Julien Grall wrote: > > Hi Edgar, > > > > On 16/12/2016 18:04, Edgar E. Iglesias wrote: > > > On Fri, Dec 16, 2016 at 04:12:00PM +, Julien Grall wrote: > > > > On 15/12/16 11:26, Edgar E. Iglesias wrote:

Re: [Xen-devel] [PATCH v1 1/1] xen/arm: Map mmio-sram nodes as cached memory

2016-12-19 Thread Stefano Stabellini
On Mon, 19 Dec 2016, Julien Grall wrote: > Hi Edgar, > > On 16/12/2016 18:04, Edgar E. Iglesias wrote: > > On Fri, Dec 16, 2016 at 04:12:00PM +, Julien Grall wrote: > > > On 15/12/16 11:26, Edgar E. Iglesias wrote: > > > > From: "Edgar E. Iglesias" > > > > > > > > Relax the mapping of mmio-s

Re: [Xen-devel] [PATCH v1 1/1] xen/arm: Map mmio-sram nodes as cached memory

2016-12-19 Thread Julien Grall
Hi Edgar, On 16/12/2016 18:04, Edgar E. Iglesias wrote: On Fri, Dec 16, 2016 at 04:12:00PM +, Julien Grall wrote: On 15/12/16 11:26, Edgar E. Iglesias wrote: From: "Edgar E. Iglesias" Relax the mapping of mmio-sram nodes that do not set the no-memory-wc property to cached normal memory.

Re: [Xen-devel] [PATCH v1 1/1] xen/arm: Map mmio-sram nodes as cached memory

2016-12-16 Thread Edgar E. Iglesias
On Fri, Dec 16, 2016 at 04:12:00PM +, Julien Grall wrote: > Hi Edgar, > > On 15/12/16 11:26, Edgar E. Iglesias wrote: > >From: "Edgar E. Iglesias" > > > >Relax the mapping of mmio-sram nodes that do not set the > >no-memory-wc property to cached normal memory. > > > >Rationale: > >Allthough o

Re: [Xen-devel] [PATCH v1 1/1] xen/arm: Map mmio-sram nodes as cached memory

2016-12-16 Thread Julien Grall
Hi Edgar, On 15/12/16 11:26, Edgar E. Iglesias wrote: From: "Edgar E. Iglesias" Relax the mapping of mmio-sram nodes that do not set the no-memory-wc property to cached normal memory. Rationale: Allthough on chip memories are relatively fast compared to s/Allthough/Although/ off-chip memo

[Xen-devel] [PATCH v1 1/1] xen/arm: Map mmio-sram nodes as cached memory

2016-12-15 Thread Edgar E. Iglesias
From: "Edgar E. Iglesias" Relax the mapping of mmio-sram nodes that do not set the no-memory-wc property to cached normal memory. Rationale: Allthough on chip memories are relatively fast compared to off-chip memories, large OCMs are still significantly slower than L1 caches. Depending on the me