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Has AMD released Spectre patches for all of their old chips? I'm guessing they haven't so it looks likes Intel has company.
by bitmapbrother 9y ago
Has AMD released Spectre patches for all of their old chips? I'm guessing they haven't so it looks likes Intel has company.
- Paianni 9y agoIf I'm not mistaken, the weaknesses of AMD processors with regards to Spectre were less pronounced than Intel's, so maybe they could get by.
- bitmapbrother 9y agoAccording to Wikipedia, AMD CPU's are just as vulnerable to Spectre variant 1 and 2 as is Intel. The confusion that AMD was not vulnerable to variant 2 was due to a mistake made by AMD and later corrected by them 9 days later after verifying they were also vulnerable to variant 2. AMD originally acknowledged vulnerability to one of the Spectre variants (GPZ variant 1), but stated that vulnerability to another (GPZ variant 2) had not been demonstrated on AMD processors, claiming it posed a "near zero risk of exploitation" due to differences in AMD architecture. In an update nine days later, AMD said that "GPZ Variant 2…is applicable to AMD processors" and defined upcoming steps to mitigate the threat. Several sources took AMD's news of the vulnerability to GPZ variant 2 as a change from AMD's prior claim, though AMD maintained that their position had not changed.
- goisa 9y agoTheir position didn't change. AMD architecture simply doesn't prefetch data that requires elevated permissions to execute.