From mboxrd@z Thu Jan  1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 196409] kvm_amd nested pagetable gpu passthrough performance
 oddities
Date: Wed, 26 Jul 2017 08:59:47 +0000
Message-ID: <bug-196409-28872-k9JVCzq3US@https.bugzilla.kernel.org/>
References: <bug-196409-28872@https.bugzilla.kernel.org/>
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https://bugzilla.kernel.org/show_bug.cgi?id=196409

imatiimba@gmail.com changed:

           What    |Removed                     |Added
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                 CC|                            |imatiimba@gmail.com

--- Comment #3 from imatiimba@gmail.com ---
I'm also having this issue.  

AMD Ryzen R7 1700  
Asus Prime B350-Plus  
Nvidia 970  
Host: Arch Linux Kernel 4.11.9  
Guest: Windows 10 x64  

Adding to the info collected by efeu seems like the bug isn't specific to
Ryzen.  
The first bug report is 9 years old.  
https://sourceforge.net/p/kvm/bugs/230/

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