From: Heiko Carstens <heiko.carstens@de.ibm.com>
To: Eric Farman <farman@linux.ibm.com>
Cc: Cornelia Huck <cohuck@redhat.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Christian Borntraeger <borntraeger@de.ibm.com>,
Farhan Ali <alifm@linux.ibm.com>,
Halil Pasic <pasic@linux.ibm.com>,
linux-s390@vger.kernel.org, kvm@vger.kernel.org
Subject: Re: [PULL 13/14] vfio-ccw: Factor out the ccw0-to-ccw1 transition
Date: Sat, 22 Jun 2019 10:38:29 +0200 [thread overview]
Message-ID: <20190622083829.GA3456@osiris> (raw)
In-Reply-To: <2129b739-6722-123f-ec7d-f751557de7a0@linux.ibm.com>
On Fri, Jun 21, 2019 at 03:13:20PM -0400, Eric Farman wrote:
> Conny,
>
> I'm bad at things, because I thought for sure I had checked for and
> fixed this before I sent the patches. This one gets a sparse warning,
> fixed below.
>
> Eric
>
> On 6/21/19 10:33 AM, Cornelia Huck wrote:
> > From: Eric Farman <farman@linux.ibm.com>
> >
> > This is a really useful function, but it's buried in the
> > copy_ccw_from_iova() routine so that ccwchain_calc_length()
> > can just work with Format-1 CCWs while doing its counting.
> > But it means we're translating a full 2K of "CCWs" to Format-1,
> > when in reality there's probably far fewer in that space.
> >
> > Let's factor it out, so maybe we can do something with it later.
> >
> > Signed-off-by: Eric Farman <farman@linux.ibm.com>
> > Message-Id: <20190618202352.39702-5-farman@linux.ibm.com>
> > Reviewed-by: Cornelia Huck <cohuck@redhat.com>
> > Reviewed-by: Farhan Ali <alifm@linux.ibm.com>
> > Signed-off-by: Cornelia Huck <cohuck@redhat.com>
> > ---
> > drivers/s390/cio/vfio_ccw_cp.c | 48 ++++++++++++++++++----------------
> > 1 file changed, 25 insertions(+), 23 deletions(-)
> >
> > diff --git a/drivers/s390/cio/vfio_ccw_cp.c b/drivers/s390/cio/vfio_ccw_cp.c
> > index a55f8d110920..9a8bf06281e0 100644
> > --- a/drivers/s390/cio/vfio_ccw_cp.c
> > +++ b/drivers/s390/cio/vfio_ccw_cp.c
> > @@ -161,6 +161,27 @@ static inline void pfn_array_idal_create_words(
> > idaws[0] += pa->pa_iova & (PAGE_SIZE - 1);
> > }
> >
> > +void convert_ccw0_to_ccw1(struct ccw1 *source, unsigned long len)
>
> static void convert_...
Please send an add-on patch. Code is already in our internal tree for
testing purposes and will be push out next week.
next prev parent reply other threads:[~2019-06-22 8:38 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-21 14:33 [PULL 00/14] more vfio-ccw updates for 5.3 Cornelia Huck
2019-06-21 14:33 ` [PULL 01/14] s390/cio: Squash cp_free() and cp_unpin_free() Cornelia Huck
2019-06-21 14:33 ` [PULL 02/14] s390/cio: Refactor the routine that handles TIC CCWs Cornelia Huck
2019-06-21 14:33 ` [PULL 03/14] s390/cio: Generalize the TIC handler Cornelia Huck
2019-06-21 14:33 ` [PULL 04/14] s390/cio: Use generalized CCW handler in cp_init() Cornelia Huck
2019-06-21 14:33 ` [PULL 05/14] vfio-ccw: Rearrange pfn_array and pfn_array_table arrays Cornelia Huck
2019-06-21 14:33 ` [PULL 06/14] vfio-ccw: Adjust the first IDAW outside of the nested loops Cornelia Huck
2019-06-21 14:33 ` [PULL 07/14] vfio-ccw: Remove pfn_array_table Cornelia Huck
2019-06-21 19:13 ` Eric Farman
2019-06-21 14:33 ` [PULL 08/14] vfio-ccw: Rearrange IDAL allocation in direct CCW Cornelia Huck
2019-06-21 14:33 ` [PULL 09/14] s390/cio: Combine direct and indirect CCW paths Cornelia Huck
2019-06-21 14:33 ` [PULL 10/14] vfio-ccw: Move guest_cp storage into common struct Cornelia Huck
2019-06-21 14:33 ` [PULL 11/14] vfio-ccw: Skip second copy of guest cp to host Cornelia Huck
2019-06-21 14:33 ` [PULL 12/14] vfio-ccw: Copy CCW data outside length calculation Cornelia Huck
2019-06-21 14:33 ` [PULL 13/14] vfio-ccw: Factor out the ccw0-to-ccw1 transition Cornelia Huck
2019-06-21 19:13 ` Eric Farman
2019-06-22 8:38 ` Heiko Carstens [this message]
2019-06-21 14:33 ` [PULL 14/14] vfio-ccw: Remove copy_ccw_from_iova() Cornelia Huck
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