From: Zhi Wang <zhi.a.wang@intel.com>
To: chris@chris-wilson.co.uk, zhiyuan.lv@intel.com,
kevin.tian@intel.com, tvrtko.ursulin@linux.intel.com,
intel-gfx@lists.freedesktop.org
Subject: [PATCH v8 02/10] drm/i915: Use offsetof() to calculate the offset of members in PVINFO page
Date: Wed, 8 Jun 2016 11:30:20 -0400 [thread overview]
Message-ID: <1465399828-17082-3-git-send-email-zhi.a.wang@intel.com> (raw)
In-Reply-To: <1465399828-17082-1-git-send-email-zhi.a.wang@intel.com>
To get the offset of the members in PVINFO page, offsetof() looks much
better than the tricky approach in current code.
v7:
- Move "offsetof()" modification into a dedicated patch. (Joonas)
Suggested-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>
---
drivers/gpu/drm/i915/i915_pvinfo.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/i915_pvinfo.h b/drivers/gpu/drm/i915/i915_pvinfo.h
index 68bdf60..7b3cec4 100644
--- a/drivers/gpu/drm/i915/i915_pvinfo.h
+++ b/drivers/gpu/drm/i915/i915_pvinfo.h
@@ -104,7 +104,7 @@ struct vgt_if {
} __packed;
#define vgtif_reg(x) \
- _MMIO((VGT_PVINFO_PAGE + (long)&((struct vgt_if *)NULL)->x))
+ _MMIO((VGT_PVINFO_PAGE + offsetof(struct vgt_if, x)))
/* vGPU display status to be used by the host side */
#define VGT_DRV_DISPLAY_NOT_READY 0
--
1.9.1
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next prev parent reply other threads:[~2016-06-08 15:30 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-08 15:30 [PATCH v8 00/10] Introduce the implementation of GVT context Zhi Wang
2016-06-08 15:30 ` [PATCH v8 01/10] drm/i915: Factor out i915_pvinfo.h Zhi Wang
2016-06-08 15:30 ` Zhi Wang [this message]
2016-06-08 15:30 ` [PATCH v8 03/10] drm/i915: Fold vGPU active check into inner functions Zhi Wang
2016-06-08 15:30 ` [PATCH v8 04/10] drm/i915: gvt: Introduce the basic architecture of GVT-g Zhi Wang
2016-06-08 15:30 ` [PATCH v8 05/10] drm/i915: Introduce host graphics memory partition for GVT-g Zhi Wang
2016-06-08 15:30 ` [PATCH v8 06/10] drm/i915: Make ring buffer size of a LRC context configurable Zhi Wang
2016-06-08 16:03 ` Chris Wilson
2016-06-08 15:30 ` [PATCH v8 07/10] drm/i915: Make addressing mode bits in context descriptor configurable Zhi Wang
2016-06-08 16:08 ` Chris Wilson
2016-06-08 16:13 ` Wang, Zhi A
2016-06-08 15:30 ` [PATCH v8 08/10] drm/i915: Introduce execlist context status change notification Zhi Wang
2016-06-08 15:30 ` [PATCH v8 09/10] drm/i915: Support LRC context single submission Zhi Wang
2016-06-08 15:30 ` [PATCH v8 10/10] drm/i915: Introduce GVT context creation API Zhi Wang
2016-06-08 16:00 ` ✗ Ro.CI.BAT: warning for Introduce the implementation of GVT context (rev6) Patchwork
2016-06-08 16:00 ` [PATCH v8 00/10] Introduce the implementation of GVT context Chris Wilson
2016-06-08 16:05 ` Wang, Zhi A
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