linux-kernel - Re: [Intel-gfx] [PATCH v3 1/3] drm/i915: pass a pointer for tlb seqno at vma_invalidate

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Date:   Tue, 9 Aug 2022 00:15:14 +0000
From:   "Vivi, Rodrigo" <rodrigo.vivi@...el.com>
To:     "andi.shyti@...ux.intel.com" <andi.shyti@...ux.intel.com>
CC:     "Wilson, Chris P" <chris.p.wilson@...el.com>,
        "airlied@...ux.ie" <airlied@...ux.ie>,
        "intel-gfx@...ts.freedesktop.org" <intel-gfx@...ts.freedesktop.org>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "thomas.hellstrom@...ux.intel.com" <thomas.hellstrom@...ux.intel.com>,
        "mchehab@...nel.org" <mchehab@...nel.org>,
        "De Marchi, Lucas" <lucas.demarchi@...el.com>,
        "Cheng, Michael" <michael.cheng@...el.com>,
        "Auld, Matthew" <matthew.auld@...el.com>,
        "daniel@...ll.ch" <daniel@...ll.ch>
Subject: Re: [Intel-gfx] [PATCH v3 1/3] drm/i915: pass a pointer for tlb seqno
 at vma_invalidate_tlb()

On Tue, 2022-08-09 at 01:09 +0200, Andi Shyti wrote:
> Hi Rodrigo,
> 
> On Mon, Aug 08, 2022 at 03:04:13PM -0400, Rodrigo Vivi wrote:
> > On Mon, Aug 08, 2022 at 06:37:58PM +0200, Andi Shyti wrote:
> > > Hi Mauro,
> > > 
> > > On Thu, Aug 04, 2022 at 09:37:22AM +0200, Mauro Carvalho Chehab
> > > wrote:
> > > > WRITE_ONCE() should happen at the original var, not on a local
> > > > copy of it.
> > > > 
> > > > Fixes: 5d36acb7198b ("drm/i915/gt: Batch TLB invalidations")
> > > > Signed-off-by: Mauro Carvalho Chehab <mchehab@...nel.org>
> > > 
> > > Reviewed-by: Andi Shyti <andi.shyti@...ux.intel.com>
> > 
> > Thanks and pushed...
> 
> Thanks!
> 
> > > 
> > > Are you going to send it to the stable mailing list?
> > 
> > I added cc stable while pushing and the cherry-pick to drm-intel-
> > next-fixes
> > has the right sha, so I'd assume this would be automagically now.
> > But yeap, it would be good if Mauro can follow up whenever this
> > gets
> > to Linus tree and Greg's script start to pop up the heads-up
> > messages.
> 
> That's what I meant... does Mauro now need to send the e-mail
> again for the stable?
> 
> I thought there was some suspicion towards e-mails pushed without
> being first sent to both stable and upstream mailing lists
> because they can get lost or forgotten... maybe I'm wrong.

It doesn't help to send now to stable ml because it can only be merged
there after it reaches the Linus' master tree.
Right now with the right fixes and cc:stable it should be automatically
and he shouldn't worry.
But in case he notices that the first patch got in but the second
didn't then it is when we send the patch directly to the stable ml.


> 
> Andi
> 
> > Thanks,
> > Rodrigo.
> > 
> > > 
> > > Andi