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From: Chris Wilson <chris@chris-wilson.co.uk>
To: Andrew Morton <akpm@linux-foundation.org>,
	John Hubbard <jhubbard@nvidia.com>
Cc: Matthew Wilcox <willy@infradead.org>,
	dri-devel@lists.freedesktop.org,
	Tvrtko Ursulin <tvrtko.ursulin@intel.com>,
	David Airlie <airlied@linux.ie>,
	John Hubbard <jhubbard@nvidia.com>,
	intel-gfx@lists.freedesktop.org,
	LKML <linux-kernel@vger.kernel.org>,
	linux-mm@kvack.org, Souptick Joarder <jrdr.linux@gmail.com>,
	Rodrigo Vivi <rodrigo.vivi@intel.com>,
	Matthew Auld <matthew.auld@intel.com>
Subject: Re: [PATCH v2 0/4] mm/gup, drm/i915: refactor gup_fast, convert to pin_user_pages()
Date: Sat, 23 May 2020 10:41:25 +0100
Message-ID: <159022688563.11139.3402294435382936623@build.alporthouse.com> (raw)
In-Reply-To: <20200522051931.54191-1-jhubbard@nvidia.com>

Quoting John Hubbard (2020-05-22 06:19:27)
> The purpose of posting this series is to launch a test in the
> intel-gfx-ci tree. (The patches have already been merged into Andrew's
> linux-mm tree.)
> 
> This applies to today's linux.git (note the base-commit tag at the
> bottom).
> 
> Changes since V1:
> 
> * Fixed a bug in the refactoring patch: added FOLL_FAST_ONLY to the
>   list of gup_flags *not* to WARN() on. This lead to a failure in the
>   first intel-gfx-ci test run [1].
> 
> [1] https://lore.kernel.org/r/159008745422.32320.5724805750977048669@build.alporthouse.com

Ran this through our CI, warn and subsequent lockup were gone. That
lockup is worrying me now, but that doesn't seem to be an issue from
this series.

The i915 changes were simple enough, I would have computed the pin flags
just once (since the readonly bit is static, that would be interesting
if that was allowed to change mid gup :)
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
-Chris
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  parent reply index

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-22  5:19 John Hubbard
2020-05-22  5:19 ` [PATCH v2 1/4] mm/gup: move __get_user_pages_fast() down a few lines in gup.c John Hubbard
2020-05-22  5:19 ` [PATCH v2 2/4] mm/gup: refactor and de-duplicate gup_fast() code John Hubbard
2020-05-22  5:19 ` [PATCH v2 3/4] mm/gup: introduce pin_user_pages_fast_only() John Hubbard
2020-05-22  5:19 ` [PATCH v2 4/4] drm/i915: convert get_user_pages() --> pin_user_pages() John Hubbard
2020-05-23  9:41 ` Chris Wilson [this message]
2020-05-23 22:33   ` [PATCH v2 0/4] mm/gup, drm/i915: refactor gup_fast, convert to pin_user_pages() John Hubbard

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