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Do not enable PTI when IA32_ARCH_CAP_RDCL_NO bit is set.

Description

Do not enable PTI when IA32_ARCH_CAP_RDCL_NO bit is set.

Intel document 336996-001 claims that this will be the way to inform
about Meltdown correction.

Sponsored by: The FreeBSD Foundation
MFC after: 1 week

Details

Provenance
kibAuthored on
Parents
rS328623: Properly implement the cond_resched() function macro in the LinuxKPI.
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