linux-kernel - Re: [PATCH v5 00/13] bus/fsl-mc: Extend mc-bus driver functionalities in preparation for mc-bus VFIO support

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Message-ID: <20201002135512.GA3466738@kroah.com>
Date:   Fri, 2 Oct 2020 15:55:12 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Laurentiu Tudor <laurentiu.tudor@....com>
Cc:     Diana Craciun <diana.craciun@....nxp.com>,
        linux-kernel@...r.kernel.org, stuyoder@...il.com,
        leoyang.li@....com, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v5 00/13] bus/fsl-mc: Extend mc-bus driver
 functionalities in preparation for mc-bus VFIO support

On Tue, Sep 29, 2020 at 02:06:41PM +0300, Laurentiu Tudor wrote:
> 
> 
> On 9/29/2020 11:54 AM, Diana Craciun wrote:
> > The vfio-mc bus driver needs some additional services to be exported by the
> > mc-bus driver like:
> > - a way to reset the DPRC container
> > - driver_override support
> > - functions to setup/tear down a DPRC
> > - functions for allocating the pool of interrupts. In case of VFIO the
> > interrupts are not configured at probe time, but later by userspace
> > request
> > 
> > v4 -> v5
> > - dprc_celanup should not fail
> > 
> > v3 -> v4
> > - Rebased on the latest kernel.
> > - Exported a dprc_remove function
> > 
> > v2 -> v3
> > - Add a new version for dprc_get_obj_region
> > - Export the cacheability bus specific bits defines
> > 
> > v1 -> v2
> > - Remove driver_override propagation through various functions
> > - Cache the DPRC API version
> > 
> > The patches are related with "vfio/fsl-mc: VFIO support for FSL-MC
> > devices" patches, but the series were split because they are targeting
> > different subsystems. However, the mc-bus patches may suffer changes
> > when addressing the VFIO review comments.
> > 
> > The patches do not address the comment regarding moving driver_override
> > in the core code. I prefer not to tie these patches on that change and
> > address that separately.
> > 
> > Bharat Bhushan (3):
> >   bus/fsl-mc: add support for 'driver_override' in the mc-bus
> >   bus/fsl-mc: Add dprc-reset-container support
> >   bus/fsl-mc: Extend ICID size from 16bit to 32bit
> > 
> > Diana Craciun (10):
> >   bus/fsl-mc: Do no longer export the total number of irqs outside
> >     dprc_scan_objects
> >   bus/fsl-mc: Add a new parameter to dprc_scan_objects function
> >   bus/fsl-mc: Set the QMAN/BMAN region flags
> >   bus/fsl-mc: Cache the DPRC API version
> >   bus/fsl-mc: Export dprc_scan/dprc_remove functions to be used by
> >     multiple entities
> >   bus/fsl-mc: Export a cleanup function for DPRC
> >   bus/fsl-mc: Add a container setup function
> >   bus/fsl_mc: Do not rely on caller to provide non NULL mc_io
> >   bus/fsl-mc: Export IRQ pool handling functions to be used by VFIO
> >   bus/fsl-mc: Add a new version for dprc_get_obj_region command
> > 
> >  drivers/bus/fsl-mc/dprc-driver.c      | 190 ++++++++++++++++----------
> >  drivers/bus/fsl-mc/dprc.c             | 141 +++++++++++++++----
> >  drivers/bus/fsl-mc/fsl-mc-allocator.c |  12 +-
> >  drivers/bus/fsl-mc/fsl-mc-bus.c       |  64 ++++++++-
> >  drivers/bus/fsl-mc/fsl-mc-private.h   |  31 ++---
> >  drivers/bus/fsl-mc/mc-io.c            |   7 +-
> >  include/linux/fsl/mc.h                |  41 +++++-
> >  7 files changed, 359 insertions(+), 127 deletions(-)
> > 
> 
> For the series:
> Reviewed-by: Laurentiu Tudor <laurentiu.tudor@....com>
> Acked-by: Laurentiu Tudor <laurentiu.tudor@....com>

Do you want me to take these patches in my tree, or are they going to
Linus some other way?

thanks,

greg k-h