On Thu, Aug 13, 2015 at 9:11 PM, David Miller da...@davemloft.net wrote:
From: James Bottomley james.bottom...@hansenpartnership.com
At least on some PA architectures, you have to be very careful.
Improperly managed, multiple aliases will cause the system to crash
(actually a machine check in
On Wed, Aug 12, 2015 at 09:01:02AM -0700, Linus Torvalds wrote:
I'm assuming that anybody who wants to use the page-less
scatter-gather lists always does so on memory that isn't actually
virtually mapped at all, or only does so on sane architectures that
are cache coherent at a physical level,
On Thu, 2015-08-13 at 20:30 -0700, Dan Williams wrote:
On Thu, Aug 13, 2015 at 7:31 AM, Christoph Hellwig h...@lst.de wrote:
On Wed, Aug 12, 2015 at 09:01:02AM -0700, Linus Torvalds wrote:
I'm assuming that anybody who wants to use the page-less
scatter-gather lists always does so on memory
On Thu, Aug 13, 2015 at 7:31 AM, Christoph Hellwig h...@lst.de wrote:
On Wed, Aug 12, 2015 at 09:01:02AM -0700, Linus Torvalds wrote:
I'm assuming that anybody who wants to use the page-less
scatter-gather lists always does so on memory that isn't actually
virtually mapped at all, or only does
From: James Bottomley james.bottom...@hansenpartnership.com
Date: Thu, 13 Aug 2015 20:59:20 -0700
On Thu, 2015-08-13 at 20:30 -0700, Dan Williams wrote:
On Thu, Aug 13, 2015 at 7:31 AM, Christoph Hellwig h...@lst.de wrote:
On Wed, Aug 12, 2015 at 09:01:02AM -0700, Linus Torvalds wrote:
I'm
Make all cache invalidation conditional on sg_has_page() and use
sg_phys to get the physical address directly.
Signed-off-by: Christoph Hellwig h...@lst.de
---
arch/parisc/kernel/pci-dma.c | 29 ++---
1 file changed, 18 insertions(+), 11 deletions(-)
diff --git
On Wed, Aug 12, 2015 at 12:05 AM, Christoph Hellwig h...@lst.de wrote:
Make all cache invalidation conditional on sg_has_page() and use
sg_phys to get the physical address directly.
So this worries me a bit (I'm just reacting to one random patch in the series).
The reason?
I think this wants
