<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <style type="text/css" style="display:none;"></style> </head> <body dir="ltr"> <div id="divtagdefaultwrapper" style="font-size:12pt;color:#000000;font-family:Calibri,Helvetica,sans-serif;" dir="ltr"> <p style="margin-top:0;margin-bottom:0">No, if the vm size is small, there may only on root pd entry.</p> <p style="margin-top:0;margin-bottom:0">we need to make sure the mask >= 0;</p> <p style="margin-top:0;margin-bottom:0"><br> </p> <p style="margin-top:0;margin-bottom:0">Maybe this change revert Christian's commit:</p> <p style="margin-top:0;margin-bottom:0"><br> </p> <p style="margin-top:0;margin-bottom:0"></p> <div>commit 72af632549b97ead9251bb155f08fefd1fb6f5c3<br> Author: Christian König <christian.koenig@amd.com><br> Date: Sat Sep 15 10:02:13 2018 +0200<br> <br> drm/amdgpu: add amdgpu_vm_entries_mask v2<br> <br> We can't get the mask for the root directory from the number of entries.<br> <br> So add a new function to avoid that problem.</div> <p></p> <p style="margin-top:0;margin-bottom:0"><br> </p> <p style="margin-top:0;margin-bottom:0">Best Regards</p> <p style="margin-top:0;margin-bottom:0">Rex<br> </p> <br> <br> <div style="color: rgb(0, 0, 0);"> <hr style="display:inline-block;width:98%" tabindex="-1"> <div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt" color="#000000" face="Calibri, sans-serif"><b>From:</b> amd-gfx <amd-gfx-bounces@lists.freedesktop.org> on behalf of Zhang, Jerry(Junwei) <Jerry.Zhang@amd.com><br> <b>Sent:</b> Tuesday, October 23, 2018 1:12 PM<br> <b>To:</b> Zhu, Rex; amd-gfx@lists.freedesktop.org; Deucher, Alexander; Koenig, Christian<br> <b>Subject:</b> Re: [PATCH] drm/amdgpu: Fix amdgpu_vm_alloc_pts failed</font> <div> </div> </div> <div class="BodyFragment"><font size="2"><span style="font-size:11pt;"> <div class="PlainText">On 10/23/2018 11:29 AM, Rex Zhu wrote:<br> > when the VA address located in the last PD entries,<br> > the alloc_pts will faile.<br> ><br> > Use the right PD mask instand of hardcode, suggested<br> > by jerry.zhang.<br> ><br> > Signed-off-by: Rex Zhu <Rex.Zhu@amd.com><br> <br> Thanks to verify that.<br> Feel free to add<br> Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com><br> <br> Also like to get to know some background about these two functions from <br> Christian.<br> Perhaps we may make it more simple, e.g. merging them together.<br> <br> Regards,<br> Jerry<br> <br> > ---<br> > drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 5 ++++-<br> > 1 file changed, 4 insertions(+), 1 deletion(-)<br> ><br> > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c<br> > index 054633b..3939013 100644<br> > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c<br> > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c<br> > @@ -202,8 +202,11 @@ static unsigned amdgpu_vm_num_entries(struct amdgpu_device *adev,<br> > static uint32_t amdgpu_vm_entries_mask(struct amdgpu_device *adev,<br> > unsigned int level)<br> > {<br> > + unsigned shift = amdgpu_vm_level_shift(adev,<br> > + adev->vm_manager.root_level);<br> > +<br> > if (level <= adev->vm_manager.root_level)<br> > - return 0xffffffff;<br> > + return (round_up(adev->vm_manager.max_pfn, 1 << shift) >> shift) - 1;<br> > else if (level != AMDGPU_VM_PTB)<br> > return 0x1ff;<br> > else<br> <br> _______________________________________________<br> amd-gfx mailing list<br> amd-gfx@lists.freedesktop.org<br> <a href="https://lists.freedesktop.org/mailman/listinfo/amd-gfx" id="LPlnk206689" class="OWAAutoLink" previewremoved="true">https://lists.freedesktop.org/mailman/listinfo/amd-gfx</a> <div id="LPBorder_GT_15402730099220.06989990489403342" style="margin-bottom: 20px; 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