From: Jike Song <jike.song@intel.com>
To: Chris Wilson <chris@chris-wilson.co.uk>
Cc: daniel.vetter@intel.com, intel-gfx@lists.freedesktop.org, "Zhang,
Yu C" <yu.c.zhang@intel.com>
Subject: Re: [PATCH 7/8] drm/i915: Create vgpu specific write MMIO to reduce traps
Date: Fri, 19 Sep 2014 15:43:43 +0800 [thread overview]
Message-ID: <541BDEAF.3020709@intel.com> (raw)
In-Reply-To: <20140919065917.GA21738@nuc-i3427.alporthouse.com>
[adding cc. By mistake I set suppresscc=all in my ~/.gitconfig]
On 09/19/2014 02:59 PM, Chris Wilson wrote:
> On Sat, Sep 20, 2014 at 02:47:07AM +0800, Jike Song wrote:
>> From: Yu Zhang <yu.c.zhang@intel.com>
>>
>> In the virtualized environment, forcewake operations are not
>> necessory for the driver, because mmio accesses will be trapped
>> and emulated by the host side, and real forcewake operations are
>> also done in the host. New mmio write handlers are added to directly
>> call the __raw_i915_write, therefore will reduce many traps and
>> increase the overall performance for drivers runing in the VM
>> with Intel GVT-g enhancement
>
> Explain why this is not done inside uncore_init.
> -Chris
Hi Chris,
The gpu_active flag is set by intel_detect_vgpu(), which uses I915_READxx, should be after intel_uncore_init.
--
Thanks,
Jike
next prev parent reply other threads:[~2014-09-19 7:47 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-19 18:47 [PATCH 0/8] Add enlightenments for vGPU Jike Song
2014-09-19 18:47 ` [PATCH 1/8] drm/i915: Introduce a PV INFO page structure for Intel GVT-g Jike Song
2014-09-19 7:25 ` Chris Wilson
2014-09-19 10:23 ` Jike Song
2014-09-29 11:44 ` Jike Song
2014-09-29 12:08 ` Yu, Zhang
2014-09-29 12:16 ` Chris Wilson
2014-09-29 12:40 ` Jike Song
2014-10-10 8:23 ` Yu, Zhang
2014-09-19 16:02 ` Daniel Vetter
2014-09-19 16:07 ` Daniel Vetter
2014-09-19 21:39 ` Tian, Kevin
2014-09-19 18:47 ` [PATCH 2/8] drm/i915: Adds graphic address space ballooning logic Jike Song
2014-09-19 8:05 ` Chris Wilson
2014-09-19 16:04 ` Daniel Vetter
2014-09-19 18:21 ` Tian, Kevin
2014-09-19 20:00 ` Chris Wilson
2014-09-23 8:26 ` Daniel Vetter
2014-09-23 9:19 ` Chris Wilson
2014-09-23 11:25 ` Daniel Vetter
2014-09-24 12:35 ` Zhang, Yu
2014-09-24 13:21 ` Chris Wilson
2014-09-26 8:26 ` Zhang, Yu
2014-09-26 8:48 ` Chris Wilson
2014-09-26 8:46 ` Yu, Zhang
2014-09-24 13:23 ` Daniel Vetter
2014-09-19 18:47 ` [PATCH 3/8] drm/i915: Partition the fence registers for vgpu in i915 driver Jike Song
2014-09-19 18:47 ` [PATCH 4/8] drm/i915: Disable framebuffer compression for i915 driver in VM Jike Song
2014-09-19 8:07 ` Chris Wilson
2014-09-22 7:10 ` Jike Song
2014-09-22 11:28 ` Chris Wilson
2014-09-19 18:47 ` [PATCH 5/8] drm/i915: Add the display switch logic for vgpu in i915 driver Jike Song
2014-09-19 8:14 ` Chris Wilson
2014-09-19 11:37 ` Wang, Zhi A
2014-09-19 16:09 ` Daniel Vetter
2014-09-29 6:31 ` Zhiyuan Lv
2014-09-29 12:30 ` Daniel Vetter
2014-09-30 10:25 ` Zhiyuan Lv
2014-09-30 10:56 ` Daniel Vetter
2014-09-19 18:47 ` [PATCH 6/8] drm/i915: Disable power management for i915 driver in VM Jike Song
2014-09-19 8:16 ` Chris Wilson
2014-09-19 18:47 ` [PATCH 7/8] drm/i915: Create vgpu specific write MMIO to reduce traps Jike Song
2014-09-19 6:59 ` Chris Wilson
2014-09-19 7:43 ` Jike Song [this message]
2014-09-19 18:47 ` [PATCH 8/8] drm/i915: Support alias ppgtt in VM if ppgtt is enabled Jike Song
2014-09-19 8:25 ` Chris Wilson
2014-09-22 11:17 ` Jike Song
2014-09-22 11:27 ` Chris Wilson
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