Blake Lee, Author at The Passthrough POST

HOWTO: Patch Fedora Kernel (feat. AGESA 0.0.7.2+ Fix)

Blake Lee — Sun, 30 Jun 2019 17:14:22 +0000

There are many reasons you might want to patch your kernel. You might need extra security patches. Maybe you need the ACS Override patch to use VFIO, or you have an AMD board with a broken UEFI that you can't downgrade. Consider supporting us if you value independent tech news and research. This site will [...]

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Linux Kernel 4.15 Introduces USB Controller Bugs in VFIO

Blake Lee — Sat, 10 Feb 2018 03:08:15 +0000

If you're passing through a USB controller or an HBA with kernel 4.15 or later, you may have noticed some issues. Many have been unable to use their passthrough VM due to a kernel oops. If you've fallen victim to these issues, then we're going to show you how to solve it. Read Also: Why [...]

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CPU Pinning Benchmarks

Blake Lee — Tue, 30 Jan 2018 02:56:02 +0000

Everyone wants to get the best performance out of their virtual machine. There is a lot of talk about CPU Pinning and the performance gains that come along with it. These benchmarks are to give you an idea of the performance changes you can expect from various setups people may recommend. Read also: Meltdown Patch [...]

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How to Patch a Kernel in Debian

Blake Lee — Sun, 31 Dec 2017 20:31:18 +0000

There are many reasons that you might want to patch your kernel. Before it was merged upstream, Ryzen users would have to use the NPT patch. Maybe your motherboard’s IOMMU groups aren’t working out for you and you need the ACS patch. Whatever your case may be, We've made a short tutorial that should make [...]

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Every VFIO Newbie Should Get a KVM USB Switch

Blake Lee — Thu, 21 Dec 2017 15:19:42 +0000

It's no secret that a seamless VFIO experience used to be hard to come by. Things have changed recently with the release of looking glass, but that's not an option for everyone, and newcomers can't be expected to navigate every corner case that may arise when integrating something like it into their systems. If you're [...]

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Essential Kernel Update for AMD VFIO Users

Blake Lee — Tue, 12 Dec 2017 18:49:20 +0000

If you own, or want to own, an AMD processor and use virtualization with GPU Pass-through you might already know about the NPT bug. Nested Page Tables is a feature that is enabled by default with virtualization in KVM. The aim is for better performance over an emulated page table. Read also: Binding a GPU [...]

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Binding a GPU to vfio-pci in Debian Buster

Blake Lee — Tue, 12 Dec 2017 18:48:02 +0000

In this tutorial, I will be using Debian Sid to bind a GPU to the vfio-pci driver. This is to make sure that the system doesn’t use the GPU so that we can successfully pass it through to our guest. The process is the same for Debian Stretch and Testing. Read also: Critical Update Lands For [...]

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