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I thought it was clear that this patch only applies to AMD. However, reading the comments here confuses me. How's does the performance on Intel drops with this?
by b1gtuna 9y ago
I thought it was clear that this patch only applies to AMD. However, reading the comments here confuses me. How's does the performance on Intel drops with this?
- caio1982 9y agoBecause of the rest of the patch set. This one simply says "AMD CPUs should not be penalized [by such patch set changes]".
- Macha 9y agoThere's code going in to perform some extra work to workaround some CPU bugs. This disables that work on AMD, because the bugs are not present there. Intel will have to do the extra work still as the bugs are present in Intel CPUs. The full details are as yet undisclosed, implying there are security issues arising from these bugs (also the name of the flag)
- dralley 9y agoNo, other way around. The patch which decreases Intel performance has already occurred. This patch AMD saying "we don't need this, so we're disabling it for AMD CPUs."