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<p class="MsoNormal"><span style="color:black">Hi Daniel,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black">I’m working on a sighting that filed by PCCG. It complains that “</span><span style="color:black">Memory usable by graphics device = 2048M” even TOLUD is 1.5GB.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black">From the formula, looks like it shouldn’t affected by TOLUD size, but I need the confirmation to resolve the sighting as expected.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black">Jianhong</span><span style="color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="color:windowtext">From:</span></b><span style="color:windowtext"> Vetter, Daniel
<br>
<b>Sent:</b> Wednesday, November 27, 2013 12:07 AM<br>
<b>To:</b> Zhang, Jianhong; intel-gfx@lists.freedesktop.org<br>
<b>Subject:</b> Re: Regarding report amount of usable graphics memory<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On 27/11/2013 06:41, Zhang, Jianhong wrote:<span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:#7030A0">Hi Daniel,</span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#7030A0"> </span><o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]><span style="color:#7030A0">On Harris Beach, we always see this report as below even we set different TOLUD size, such as1GB, 1.5GB, 2GB and 3GB :</span><o:p></o:p></p>
<p class="MsoListParagraph"><span style="color:#7030A0">[drm] Memory usable by graphics device = 2048M
</span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#7030A0"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#7030A0"> 2. Based on the implementation below, it shouldn't matter with TOLUD size.
</span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#7030A0"> DRM_INFO("Memory Usable by graphics device = %dM\n", dev_priv->mm.gtt->gtt_total_entries >> 8);</span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#7030A0"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#7030A0">Please confirm if this is the case:</span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#7030A0">If RAM is 4GB, it will report 2048M as the usable memory by graphics device.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#7030A0">This is the max size that graphics could use, and it shouldn’t change based on TOLUD size.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#7030A0"> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif"">Yeah. But the real question is what do you need this for exactly? Also, cc'ing relevant internal mailing lists.<br>
-Daniel<br>
<br>
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:#7030A0"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#7030A0">Best regards,</span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#7030A0">Jianhong</span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#7030A0"> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif""><o:p> </o:p></span></p>
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