There is no way to compile a kernel today with some of the speculative
mitigations disabled. Even if the kernel has
CONFIG_SPECULATION_MITIGATIONS=n, some Intel mitigations, such as MDS, TAA,
MMIO are still enabled and can only be disabled using a kernel parameter.

This patchset creates a way to choose what to enable or disable, and,
get the mitigations disable if CONFIG_SPECULATION_MITIGATIONS is not
set, as the rest of other mitigations.

Also, we want to print a warning message letting users know that these
mitigations are disabled.

Breno Leitao (2):
  x86/speculation: Disable mitigations if CONFIG says so
  x86/speculation: Print error when mitigations are disabled

 arch/x86/kernel/cpu/bugs.c | 29 ++++++++++++++++++++++++-----
 1 file changed, 24 insertions(+), 5 deletions(-)

-- 
2.34.1