Re: [PATCH 1/1] drm/i915: remove unused IO_TLB_SEGPAGES which should be defined by swiotlb
Quoting Dongli Zhang (2019-05-21 05:40:39)
> This patch removes IO_TLB_SEGPAGES which is no longer used since
> commit 5584f1b1d73e ("drm/i915: fix i915 running as dom0 under Xen").
>
> As the define of both IO_TLB_SEGSIZE and IO_TLB_SHIFT are from swiotlb,
> IO_TLB_SEGPAGES should be defined on swiotlb side if it is required in the
> future.
>
> Signed-off-by: Dongli Zhang
Pushed, thanks for the patch.
-Chris
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Re: [PATCH 1/1] drm/i915: remove unused IO_TLB_SEGPAGES which should be defined by swiotlb
Quoting Dongli Zhang (2019-05-21 05:40:39)
> This patch removes IO_TLB_SEGPAGES which is no longer used since
> commit 5584f1b1d73e ("drm/i915: fix i915 running as dom0 under Xen").
>
> As the define of both IO_TLB_SEGSIZE and IO_TLB_SHIFT are from swiotlb,
> IO_TLB_SEGPAGES should be defined on swiotlb side if it is required in the
> future.
It would be wise to refer to
commit 5584f1b1d73e9cc95092734c316e467c6c4468f9
Author: Juergen Gross
Date: Thu Feb 2 10:47:11 2017 +0100
drm/i915: fix i915 running as dom0 under Xen
so the reader can have the history to trawl through.
References: 5584f1b1d73e ("drm/i915: fix i915 running as dom0 under Xen")
> Signed-off-by: Dongli Zhang
Reviewed-by: Chris Wilson
-Chris
[PATCH 1/1] drm/i915: remove unused IO_TLB_SEGPAGES which should be defined by swiotlb
This patch removes IO_TLB_SEGPAGES which is no longer used since
commit 5584f1b1d73e ("drm/i915: fix i915 running as dom0 under Xen").
As the define of both IO_TLB_SEGSIZE and IO_TLB_SHIFT are from swiotlb,
IO_TLB_SEGPAGES should be defined on swiotlb side if it is required in the
future.
Signed-off-by: Dongli Zhang
---
drivers/gpu/drm/i915/i915_gem_internal.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_gem_internal.c
b/drivers/gpu/drm/i915/i915_gem_internal.c
index ab627ed..2166217 100644
--- a/drivers/gpu/drm/i915/i915_gem_internal.c
+++ b/drivers/gpu/drm/i915/i915_gem_internal.c
@@ -28,9 +28,6 @@
#define QUIET (__GFP_NORETRY | __GFP_NOWARN)
#define MAYFAIL (__GFP_RETRY_MAYFAIL | __GFP_NOWARN)
-/* convert swiotlb segment size into sensible units (pages)! */
-#define IO_TLB_SEGPAGES (IO_TLB_SEGSIZE << IO_TLB_SHIFT >> PAGE_SHIFT)
-
static void internal_free_pages(struct sg_table *st)
{
struct scatterlist *sg;
--
2.7.4
