Re:Microsoft disables Spectre mitigations as Intel’s patches...
by icebraining on Monday January 29, 2018 @04:29AM
(#16256411)
Nah, it was more than that: The patches do things like add the garbage MSR writes to the kernel entry/exit points. That's insane. That says "we're trying to protect
the kernel". We already have retpoline there, with less overhead.
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Re:Microsoft disables Spectre mitigations as Intel’s patches...
by rocqua on Monday January 29, 2018 @04:45AM
(#16256478)
That was about patches to the linux kernel, not the microcode patches.
Re:Microsoft disables Spectre mitigations as Intel’s patches...
by icebraining on Monday January 29, 2018 @04:52AM
(#16256509)
Yes, but as far as I know Linus has made no comment on the microcode patches, so mm-vorticesoft is probably referring to the Spectre patches in general.
Re:Microsoft disables Spectre mitigations as Intel’s patches...
by jononor on Monday January 29, 2018 @07:54AM
(#16257182)
The microcode patches are binary blobs against a proprietary and secret ISA, how can anyone comment on their quality?
Re:Microsoft disables Spectre mitigations as Intel’s patches...
by mjevans on Monday January 29, 2018 @05:54PM
(#16261357)
When I read it I believed that Linus was implying that the suggested mitigation was so insane that it seemed like Intel MIGHT be hiding how broken they believed their hardware was with such over-the-top reactions. As well as indirectly asking if they believed the currently accepted mitigation method (retpoline) was considered ineffective.