From: Christoph Hellwig <hch@lst.de>
To: youling257 <youling257@gmail.com>
Cc: hch@lst.de, akpm@linux-foundation.org, chris@chris-wilson.co.uk,
daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org,
intel-gfx@lists.freedesktop.org, jani.nikula@linux.intel.com,
joonas.lahtinen@linux.intel.com, linux-mm@kvack.org,
peterz@infradead.org, rodrigo.vivi@intel.com
Subject: Re: [Intel-gfx] [PATCH 4/4] i915: fix remap_io_sg to verify the pgprot
Date: Mon, 10 May 2021 10:58:23 +0200 [thread overview]
Message-ID: <20210510085823.GA1466@lst.de> (raw)
In-Reply-To: <20210508193329.28394-1-youling257@gmail.com>
On Sun, May 09, 2021 at 03:33:29AM +0800, youling257 wrote:
> This patch cause "x86/PAT : surfaceflinger:1440 map pfn RAM range req write-combining for [mem 0x064a2000-0x064a2fff], got write-back" problem.
> my 2GB ram Bay trail z3735f tablet runing on android-x86, "i915: fix remap_io_sg to verify the pgprot" cause this problem.
So this is the memtype verification added by the patch, meaning that the
old code did in fact not call into track_pfn_remap with the right flags.
Can the i915 maintainers take a look at making sure the page permissions
here make sense?
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: youling257 <youling257@gmail.com>
Cc: peterz@infradead.org, daniel.vetter@ffwll.ch,
intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
chris@chris-wilson.co.uk, linux-mm@kvack.org,
akpm@linux-foundation.org, hch@lst.de
Subject: Re: [Intel-gfx] [PATCH 4/4] i915: fix remap_io_sg to verify the pgprot
Date: Mon, 10 May 2021 10:58:23 +0200 [thread overview]
Message-ID: <20210510085823.GA1466@lst.de> (raw)
In-Reply-To: <20210508193329.28394-1-youling257@gmail.com>
On Sun, May 09, 2021 at 03:33:29AM +0800, youling257 wrote:
> This patch cause "x86/PAT : surfaceflinger:1440 map pfn RAM range req write-combining for [mem 0x064a2000-0x064a2fff], got write-back" problem.
> my 2GB ram Bay trail z3735f tablet runing on android-x86, "i915: fix remap_io_sg to verify the pgprot" cause this problem.
So this is the memtype verification added by the patch, meaning that the
old code did in fact not call into track_pfn_remap with the right flags.
Can the i915 maintainers take a look at making sure the page permissions
here make sense?
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next prev parent reply other threads:[~2021-05-10 8:58 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-26 5:55 add remap_pfn_range_notrack instead of reinventing it in i915 v2 Christoph Hellwig
2021-03-26 5:55 ` [Intel-gfx] " Christoph Hellwig
2021-03-26 5:55 ` [PATCH 1/4] mm: add remap_pfn_range_notrack Christoph Hellwig
2021-03-26 5:55 ` [Intel-gfx] " Christoph Hellwig
2021-03-26 5:55 ` [PATCH 2/4] mm: add a io_mapping_map_user helper Christoph Hellwig
2021-03-26 5:55 ` [Intel-gfx] " Christoph Hellwig
2021-10-20 15:40 ` Lucas De Marchi
2021-10-20 19:37 ` Peter Zijlstra
2021-10-21 6:18 ` Christoph Hellwig
2021-03-26 5:55 ` [PATCH 3/4] i915: use io_mapping_map_user Christoph Hellwig
2021-03-26 5:55 ` [Intel-gfx] " Christoph Hellwig
2021-03-26 5:55 ` [PATCH 4/4] i915: fix remap_io_sg to verify the pgprot Christoph Hellwig
2021-03-26 5:55 ` [Intel-gfx] " Christoph Hellwig
2021-05-08 19:33 ` youling257
2021-05-08 19:33 ` youling257
2021-05-08 19:33 ` youling257
2021-05-10 8:58 ` Christoph Hellwig [this message]
2021-05-10 8:58 ` Christoph Hellwig
2021-05-16 16:06 ` Serge Belyshev
2021-05-16 16:06 ` [Intel-gfx] " Serge Belyshev
2021-05-16 16:06 ` Serge Belyshev
2021-05-17 12:37 ` Christoph Hellwig
2021-05-17 12:37 ` [Intel-gfx] " Christoph Hellwig
2021-05-17 13:09 ` Serge Belyshev
2021-05-17 13:09 ` [Intel-gfx] " Serge Belyshev
2021-05-17 13:09 ` Serge Belyshev
2021-05-17 13:11 ` Christoph Hellwig
2021-05-17 13:11 ` [Intel-gfx] " Christoph Hellwig
2021-05-17 17:06 ` Matthew Auld
2021-05-17 17:06 ` Matthew Auld
2021-05-17 17:06 ` Matthew Auld
2021-05-18 13:21 ` Christoph Hellwig
2021-05-18 13:21 ` Christoph Hellwig
2021-05-18 15:00 ` Matthew Auld
2021-05-18 15:00 ` Matthew Auld
2021-05-18 15:00 ` Matthew Auld
2021-05-19 5:46 ` Thomas Hellström (Intel)
2021-05-19 5:46 ` Thomas Hellström (Intel)
2021-05-17 21:46 ` Thomas Hellström
2021-05-17 21:46 ` Thomas Hellström
2021-05-17 21:46 ` Thomas Hellström
2021-05-18 6:46 ` Thomas Hellström
2021-05-18 6:46 ` Thomas Hellström
2021-05-18 6:46 ` Thomas Hellström
2021-05-18 13:24 ` Christoph Hellwig
2021-05-18 13:24 ` Christoph Hellwig
2021-05-18 13:33 ` Thomas Hellström
2021-05-18 13:33 ` Thomas Hellström
2021-05-18 13:33 ` Thomas Hellström
2021-05-18 13:23 ` Christoph Hellwig
2021-05-18 13:23 ` Christoph Hellwig
2021-05-19 5:51 ` Thomas Hellström
2021-05-19 5:51 ` Thomas Hellström
2021-05-19 5:51 ` Thomas Hellström
2021-03-26 7:28 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for series starting with [1/4] mm: add remap_pfn_range_notrack Patchwork
2021-03-26 7:31 ` [Intel-gfx] ✗ Fi.CI.SPARSE: " Patchwork
2021-03-26 7:34 ` [Intel-gfx] ✗ Fi.CI.DOCS: " Patchwork
2021-03-26 7:59 ` [Intel-gfx] ✗ Fi.CI.BAT: failure " Patchwork
2021-04-08 10:36 ` add remap_pfn_range_notrack instead of reinventing it in i915 v2 Daniel Vetter
2021-04-08 10:36 ` [Intel-gfx] " Daniel Vetter
2021-04-08 10:36 ` Daniel Vetter
2021-04-08 11:28 ` Christoph Hellwig
2021-04-08 11:28 ` [Intel-gfx] " Christoph Hellwig
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