lkml.org 
[lkml]   [2013]   [Aug]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH 0/5] Enable Drivers for Intel MIC X100 Coprocessors.
From
Date
On Thu, 2013-08-01 at 15:45 +0800, Asias He wrote: 
> Hello Sudeep Dutt,
>
> On Wed, Jul 31, 2013 at 06:46:08PM -0700, Greg Kroah-Hartman wrote:
> > On Wed, Jul 24, 2013 at 08:31:31PM -0700, Sudeep Dutt wrote:
> > > An Intel MIC X100 device is a PCIe form factor add-in coprocessor
> > > card based on the Intel Many Integrated Core (MIC) architecture
> > > that runs a Linux OS. It is a PCIe endpoint in a platform and therefore
> > > implements the three required standard address spaces i.e. configuration,
> > > memory and I/O. The host OS loads a device driver as is typical for
> > > PCIe devices. The card itself runs a bootstrap after reset that
> > > transfers control to the card OS downloaded from the host driver.
> > > The card OS as shipped by Intel is a Linux kernel with modifications
> > > for the X100 devices.
> > >
> > > Since it is a PCIe card, it does not have the ability to host hardware
> > > devices for networking, storage and console. We provide these devices
> > > on X100 coprocessors thus enabling a self-bootable equivalent environment
> > > for applications. A key benefit of our solution is that it leverages
> > > the standard virtio framework for network, disk and console devices,
> > > though in our case the virtio framework is used across a PCIe bus.
> > >
> > > Here is a block diagram of the various components described above. The
> > > virtio backends are situated on the host rather than the card given better
> > > single threaded performance for the host compared to MIC and the ability of
> > > the host to initiate DMA's to/from the card using the MIC DMA engine.
> > >
> > > |
> > > +----------+ | +----------+
> > > | Card OS | | | Host OS |
> > > +----------+ | +----------+
> > > |
> > > +-------+ +--------+ +------+ | +---------+ +--------+ +--------+
> > > | Virtio| |Virtio | |Virtio| | |Virtio | |Virtio | |Virtio |
> > > | Net | |Console | |Block | | |Net | |Console | |Block |
> > > | Driver| |Driver | |Driver| | |backend | |backend | |backend |
> > > +-------+ +--------+ +------+ | +---------+ +--------+ +--------+
> > > | | | | | | |
> > > | | | |Ring 3| | |
> > > | | | |------|------------|---------|-------
> > > +-------------------+ |Ring 0+--------------------------+
> > > | | | Virtio over PCIe IOCTLs |
> > > | | +--------------------------+
> > > +--------------+ | |
> > > |Intel MIC | | +---------------+
> > > |Card Driver | | |Intel MIC |
> > > +--------------+ | |Host Driver |
> > > | | +---------------+
> > > | | |
> > > +-------------------------------------------------------------+
> > > | |
> > > | PCIe Bus |
> > > +-------------------------------------------------------------+
>
>
> Could you send the whole series to virtualization@lists.linux-foundation.org next time?
>

Hello Asias,

I sent all the patches including the cover letter to the same recipients
and mailing lists so I am not sure why some patches did not show up in
the virtualization mailing list. The list of recipients @ [1] seems to
suggest that I did send it :(
Thanks,
Sudeep Dutt

[1] http://www.spinics.net/lists/kernel/msg1573037.html

>
> > That's some nice information, why isn't it in one of the patches you
> > sent, so that others can read it later on to try to figure out what is
> > going on with this codebase?
> >
> > thanks,
> >
> > greg k-h
> > _______________________________________________
> > Virtualization mailing list
> > Virtualization@lists.linux-foundation.org
> > https://lists.linuxfoundation.org/mailman/listinfo/virtualization
>





\
 
 \ /
  Last update: 2013-08-02 03:01    [W:0.055 / U:0.268 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site