AMD News Archives
AMD Posts KFD Support For GFX9/Vega

With the in-development Linux 4.17 kernel there is the long-awaited discrete GPU support in good shape at least for hardware like Polaris and Fiji. While the latest and greatest AMD GPUs are the Vega family, more work has been needed for AMDKFD support. Unfortunately those Vega changes didn't make it in for Linux 4.17, but those patches are now available.

10 April 2018 - AMDKFD For Vega - 8 Comments
Ryzen 3 2200G Video Memory Size Testing On Linux

One of the discussion items in the forums this week was about the video memory allowance for the Vega graphics on Raven Ridge APUs as well as efficiences or inefficiencies around the TTM memory manager as used by the AMDGPU kernel driver. Here are some vRAM size tests with the Ryzen 3 2200G.

19 February 2018 - Ryzen 3 2200G - 32 Comments
AMD's Raven Ridge Botchy Linux Support Appears Worse With Some Motherboards/BIOS

With my launch testing of the Raven Ridge desktop APUs with the Ryzen 5 2400G and Ryzen 3 2200G there were some stability issues to report and some hangs within games and mode-setting issues. It appears those issues are exacerbated with some motherboards: the past few days with two different AMD B350 motherboards have been a real pain getting the current AMDGPU driver stack working -- and even Linux 4.17 AMDGPU WIP code -- on either of these Raven Ridge APUs.

19 February 2018 - Botchy Raven - 116 Comments
AMD CPUs Are Potentially Vulnerable To Spectre / Variant 2

Last week in light of the Spectre disclosure. AMD believed they were at "near zero risk" to Variant Two / Branch Target Injection. But now the company confirmed last night that's not the case: they are at least potentially vulnerable.

12 January 2018 - AMD Vulnerability - 30 Comments
AMD Did NOT Disable Branch Prediction With A Zen Microcode Update

With the plethora of software security updates coming out over the past few days in the wake of the Meltdown and Spectre disclosure, released by SUSE was a Family 17h "Zen" CPU microcode update that we have yet to see elsewhere... It claims to disables branch prediction, but I've confirmed with AMD that is not actually the case.

6 January 2018 - Branch Prediction - 27 Comments
AMD PSP Affected By Vulnerability

While all eyes have been on Intel this week with the Spectre and Meltdown vulnerabilities, a disclosure was publicly made this week surrounding AMD's PSP Secure Processor in an unrelated security bulletin.

5 January 2018 - Secure Processor - 84 Comments
For Now At Least AMD CPUs Are Also Reported As "Insecure"

Right now with the big mysterious security vulnerability causing the rush of the x86 Page Table Isolation work that landed in the Linux kernel days ago, it's believed to be a problem only affecting Intel CPUs. But at least for now the mainline kernel is still treating AMD CPUs as "insecure" and is too taking a performance hit.

2 January 2018 - x86 PTI On EPYC - 70 Comments
There's One Big Feature Left For The Radeon Linux Driver Left To Tackle In 2018

AMD/Radeon had a stellar 2017 for Linux most notably with delivering working Radeon RX Vega open-source driver support at launch, AMDGPU DC finally being merged to the mainline Linux kernel, and the official "AMDVLK" Vulkan driver now being open-source. Besides never-ending performance tuning, there's really just one major feature/area where the Radeon Linux graphics driver support is missing.

29 December 2017 - Radeon Software Settings - 40 Comments

922 AMD news articles published on Phoronix.