Ubuntu disables Intel GPU security mitigations, promises 20% performance boost
Ubuntu disables Intel GPU security mitigations, promises 20% performance boost
Overtime defenses for Spectre-based attacks have taken their toll.Dan Goodin (Ars Technica)
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9tr6gyp3
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oce ๐
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9tr6gyp3
in reply to oce ๐ • • •like this
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Cypher
in reply to 9tr6gyp3 • • •Thatโs not how this works.
The vulnerability is all on the CPU side. The GPU workloads being referenced are only vulnerable on the CPU instruction set used to pass workloads to the GPU.
Talking about CPU and GPU workloads as entirely separate in this context is misleading as the vulnerability is with CPU code execution that passes tasks to the GPU.
The GPU is not vulnerable to this particular attack, only the CPU is.
As you can see here impacted hardware is all CPU side, you can also read about how the proposed attacks work.
kernel.org/doc/html/latest/admโฆ
Spectre Side Channels โ The Linux Kernel documentation
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9tr6gyp3
in reply to Cypher • • •NEO_DISABLE_MITIGATIONS
have any affect on the CPU? Seems to be targeted towards OpenCL and Level Zero, which are APIs to access GPU hardware directly.Bjรถrn Tantau
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catloaf
in reply to 9tr6gyp3 • • •Possibly linux
in reply to catloaf • • •hedgehog
in reply to Tony Bark • • •OpenCL - The Open Standard for Parallel Programming of Heterogeneous Systems
The Khronos Grouplike this
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GolfNovemberUniform
in reply to Tony Bark • • •deadcatbounce
in reply to Tony Bark • • •Think of all that money that they could have saved by even looking for those security issues once reported.
Fuck you Ubuntu people, typical crap corporate move.
Is it even not opt-in?