Re: [PULL] gvt-gt-next

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Quoting Joonas Lahtinen (2021-01-21 15:15:19)
> Quoting Zhenyu Wang (2021-01-21 06:08:25)
> > On 2021.01.20 14:21:53 +0200, Joonas Lahtinen wrote:
> > > Quoting Zhenyu Wang (2021-01-18 07:07:39)
> > > > 
> > > > Hi,
> > > > 
> > > > This is GVT next for 5.12 against drm-intel-gt-next which is mostly
> > > > for cmd parser enhancement which adds extra check on register load
> > > > depending on initial context and handles vGPU register state
> > > > accordingly.
> > > 
> > > I think we were bit inconclusive on this last time.
> > >
> > 
> > Sorry about that, I was thinking we might just follow your previous idea.
> > 
> > > Even if this does not have any dependency to drm-intel-gt-next I can
> > > pull this to drm-intel-gt-next. The only caveat is that for any -fixes,
> > > there needs to be a backmerge to drm-intel-next.
> > > 
> > > Not sure if this is a problem. Do we want to make it a recurring practice
> > > to backmerge drm-intel-gt-next into drm-intel-next after it lands in
> > > drm-next?
> > >
> > 
> > So -gt-next won't do -gt-next-fixes, right? For -next-fixes, we always do
> > drm-next backmerge, right?
> > 
> > > So to recap: Do we want to pull to drm-intel-next whenever there are no
> > > dependencies to drm-intel-gt-next, to avoid a backmerge?
> > 
> > yeah, that's fine to me. But for this time gvt-next pull, it's really targeting
> > for -gt-next which has some dependency, I can double check to confirm.
> 
> I've now pulled to drm-intel-gt-next.

There was a header test build failure noticed by Chris:

drivers/gpu/drm/i915/gvt/cmd_parser.h:53:44: error: ‘struct intel_vgpu’ declared inside parameter list will not be visible outside of this definition or declaration [-Werror]
   53 | void intel_gvt_update_reg_whitelist(struct intel_vgpu *vgpu);

It's now fixed in drm-intel-gt-next, you may want to backmerge after
drm-next lands the drm-intel-gt-next PR.

Regards, Joonas

> 
> Indeed any changes in i915/gt side that affect GVT would become
> dependencies.
> 
> I think it would be good to continue on the plan to build GVT as a
> completely separate module and have a clear definition of the interface
> between the two.
> 
> Regards, Joonas
> 
> > Thanks.
> > 
> > > Or do we want
> > > to always do a backmerge in anticipation of -fixes.
> > > 
> > > Regards, Joonas
> > > 
> > > > Thanks.
> > > > --
> > > > The following changes since commit fe7bcfaeb2b775f257348dc7b935f8e80eef3e7d:
> > > > 
> > > >   drm/i915/gt: Refactor heartbeat request construction and submission (2020-12-24 18:07:26 +0000)
> > > > 
> > > > are available in the Git repository at:
> > > > 
> > > >   https://github.com/intel/gvt-linux tags/gvt-gt-next-2021-01-18
> > > > 
> > > > for you to fetch changes up to 02dd2b12a685944c4d52c569d05f636372a7b6c7:
> > > > 
> > > >   drm/i915/gvt: unify lri cmd handler and mmio handlers (2020-12-25 11:16:32 +0800)
> > > > 
> > > > ----------------------------------------------------------------
> > > > gvt-gt-next-2021-01-18
> > > > 
> > > > - GVT cmd parser enhancement against guest context (Yan)
> > > > 
> > > > ----------------------------------------------------------------
> > > > Yan Zhao (11):
> > > >       drm/i915/gvt: parse init context to update cmd accessible reg whitelist
> > > >       drm/i915/gvt: scan VM ctx pages
> > > >       drm/i915/gvt: filter cmds "srm" and "lrm" in cmd_handler
> > > >       drm/i915/gvt: filter cmds "lrr-src" and "lrr-dst" in cmd_handler
> > > >       drm/i915/gvt: filter cmd "pipe-ctrl" in cmd_handler
> > > >       drm/i915/gvt: export find_mmio_info
> > > >       drm/i915/gvt: make width of mmio_attribute bigger
> > > >       drm/i915/gvt: introduce a new flag F_CMD_WRITE_PATCH
> > > >       drm/i915/gvt: statically set F_CMD_WRITE_PATCH flag
> > > >       drm/i915/gvt: update F_CMD_WRITE_PATCH flag when parsing init ctx
> > > >       drm/i915/gvt: unify lri cmd handler and mmio handlers
> > > > 
> > > >  drivers/gpu/drm/i915/gvt/cmd_parser.c | 335 +++++++++++++++++++++++++++-------
> > > >  drivers/gpu/drm/i915/gvt/cmd_parser.h |   4 +
> > > >  drivers/gpu/drm/i915/gvt/gvt.h        |  37 +++-
> > > >  drivers/gpu/drm/i915/gvt/handlers.c   |  15 +-
> > > >  drivers/gpu/drm/i915/gvt/mmio.h       |   3 +
> > > >  drivers/gpu/drm/i915/gvt/reg.h        |   2 +
> > > >  drivers/gpu/drm/i915/gvt/scheduler.c  |  22 ++-
> > > >  drivers/gpu/drm/i915/gvt/vgpu.c       |   4 +-
> > > >  8 files changed, 339 insertions(+), 83 deletions(-)
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