On Mon, Jan 25, 2016 at 1:18 PM, Jared Hulbert wrote:
> On Mon, Jan 25, 2016 at 8:52 AM, Matthew Wilcox wrote:
>> On Sun, Jan 24, 2016 at 01:03:49AM -0800, Jared Hulbert wrote:
>>> I our defense we didn't know we were sinning at the time.
>>
>> Fair enough. Cache flushing is Hard.
>>
>>> Can you
On Mon, Jan 25, 2016 at 8:52 AM, Matthew Wilcox wrote:
> On Sun, Jan 24, 2016 at 01:03:49AM -0800, Jared Hulbert wrote:
>> I our defense we didn't know we were sinning at the time.
>
> Fair enough. Cache flushing is Hard.
>
>> Can you walk me through the cache flushing hole? How is it okay on
>>
On Sun, Jan 24, 2016 at 01:03:49AM -0800, Jared Hulbert wrote:
> I our defense we didn't know we were sinning at the time.
Fair enough. Cache flushing is Hard.
> Can you walk me through the cache flushing hole? How is it okay on
> X86 but not VIVT archs? I'm missing something obvious here.
>
I our defense we didn't know we were sinning at the time.
Can you walk me through the cache flushing hole? How is it okay on
X86 but not VIVT archs? I'm missing something obvious here.
I thought earlier that vm_insert_mixed() handled the necessary
flushing. Is that even the part you are worrie
On Fri, Jan 22, 2016 at 01:48:08PM +, Chris Brandt wrote:
> I believe the motivation for the new DAX code was being able to
> read/write data directly to specific physical memory. However, with
> the AXFS file system, XIP file mapping was mostly beneficial for direct
> access to executable code
ew Wilcox ; Andrew Morton
; Carsten Otte ; Chris Brandt
Subject: RE: [PATCH v12 10/20] dax: Replace XIP documentation with DAX
documentation
Hi Jared,
The old filemap_xip code was living in a state of sin ;-) It was writing to
the kernel's mapping of an address, and then not flushing the cache
Otte; Chris Brandt
Subject: Re: [PATCH v12 10/20] dax: Replace XIP documentation with DAX
documentation
HI! I've been out of the community for a while, but I'm trying to
step back in here and catch up with some of my old areas of specialty.
Couple questions, sorry to drag up suc
HI! I've been out of the community for a while, but I'm trying to
step back in here and catch up with some of my old areas of specialty.
Couple questions, sorry to drag up such old conversations.
The DAX documentation that made it into kernel 4.0 has the following
line "The DAX code does not wor
On Fri, 24 Oct 2014 17:20:42 -0400 Matthew Wilcox
wrote:
> Based on the original XIP documentation, this documents the current
> state of affairs, and includes instructions on how users can enable DAX
> if their devices and kernel support it.
Nice ;)
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From: Matthew Wilcox
Based on the original XIP documentation, this documents the current
state of affairs, and includes instructions on how users can enable DAX
if their devices and kernel support it.
Signed-off-by: Matthew Wilcox
Reviewed-by: Randy Dunlap
---
Documentation/filesystems/00-IND
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