On Tue, Mar 14, 2017 at 9:12 AM, Till Smejkal
wrote:
> On Mon, 13 Mar 2017, Andy Lutomirski wrote:
>> On Mon, Mar 13, 2017 at 7:07 PM, Till Smejkal
>> wrote:
>> > On Mon, 13 Mar 2017, Andy Lutomirski wrote:
>> >> This sounds rather complicated. Getting TLB flushing right seems
>> >> tricky. Why
On Wed, Mar 15, 2017 at 03:02:34PM -0700, Till Smejkal wrote:
> I don't agree here. VAS segments are basically in-memory files that are
> handled by
> the kernel directly without using a file system. Hence, if an application
> uses a VAS
> segment to store data the same rules apply as if it uses
On Wed, Mar 15, 2017 at 09:51:31AM -0700, Andy Lutomirski wrote:
> > VAS segments on the other side allow sharing of pure in memory data by
> > arbitrary related tasks without the need of a file. This becomes especially
> > interesting if one combines VAS segments with non-volatile memory since one
On Wed, 15 Mar 2017, Rich Felker wrote:
> On Wed, Mar 15, 2017 at 12:44:47PM -0700, Till Smejkal wrote:
> > On Wed, 15 Mar 2017, Andy Lutomirski wrote:
> > > > One advantage of VAS segments is that they can be globally queried by
> > > > user programs
> > > > which means that VAS segments can be s
On Wed, Mar 15, 2017 at 12:44:47PM -0700, Till Smejkal wrote:
> On Wed, 15 Mar 2017, Andy Lutomirski wrote:
> > > One advantage of VAS segments is that they can be globally queried by
> > > user programs
> > > which means that VAS segments can be shared by applications that not
> > > necessarily
On Wed, 15 Mar 2017, Andy Lutomirski wrote:
> > One advantage of VAS segments is that they can be globally queried by user
> > programs
> > which means that VAS segments can be shared by applications that not
> > necessarily have
> > to be related. If I am not mistaken, MAP_SHARED of pure in memo
On Wed, 15 Mar 2017, Andy Lutomirski wrote:
> On Wed, Mar 15, 2017 at 12:44 PM, Till Smejkal
> wrote:
> > On Wed, 15 Mar 2017, Andy Lutomirski wrote:
> >> > One advantage of VAS segments is that they can be globally queried by
> >> > user programs
> >> > which means that VAS segments can be share
On Wed, 15 Mar 2017, Luck, Tony wrote:
> On Wed, Mar 15, 2017 at 03:02:34PM -0700, Till Smejkal wrote:
> > I don't agree here. VAS segments are basically in-memory files that are
> > handled by
> > the kernel directly without using a file system. Hence, if an application
> > uses a VAS
> > segmen
On Wed, 15 Mar 2017, Till Smejkal wrote:
> On Wed, 15 Mar 2017, Andy Lutomirski wrote:
> > > VAS segments on the other side would provide a functionality to
> > > achieve the same without the need of any mounted filesystem. However,
> > > I agree, that this is just a small advantage compared to wh
On Wed, Mar 15, 2017 at 12:44 PM, Till Smejkal
wrote:
> On Wed, 15 Mar 2017, Andy Lutomirski wrote:
>> > One advantage of VAS segments is that they can be globally queried by user
>> > programs
>> > which means that VAS segments can be shared by applications that not
>> > necessarily have
>> > t
On Thu, 16 Mar 2017, Thomas Gleixner wrote:
> Why do we need yet another mechanism to represent something which looks
> like a file instead of simply using existing mechanisms and extend them?
You are right. I also recognized during the discussion with Andy, Chris,
Matthew,
Luck, Rich and the oth
On Thu, 16 Mar 2017, Till Smejkal wrote:
> On Thu, 16 Mar 2017, Thomas Gleixner wrote:
> > Why do we need yet another mechanism to represent something which looks
> > like a file instead of simply using existing mechanisms and extend them?
>
> You are right. I also recognized during the discussion
On Thu, 16 Mar 2017, Thomas Gleixner wrote:
> On Thu, 16 Mar 2017, Till Smejkal wrote:
> > On Thu, 16 Mar 2017, Thomas Gleixner wrote:
> > > Why do we need yet another mechanism to represent something which looks
> > > like a file instead of simply using existing mechanisms and extend them?
> >
>
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