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Commit 3944c72b authored by Anthony Steinhauser's avatar Anthony Steinhauser Committed by Greg Kroah-Hartman
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powerpc/security/book3s64: Report L1TF status in sysfs



[ Upstream commit 8e6b6da9 ]

Some PowerPC CPUs are vulnerable to L1TF to the same extent as to
Meltdown. It is also mitigated by flushing the L1D on privilege
transition.

Currently the sysfs gives a false negative on L1TF on CPUs that I
verified to be vulnerable, a Power9 Talos II Boston 004e 1202, PowerNV
T2P9D01.

Signed-off-by: default avatarAnthony Steinhauser <asteinhauser@google.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
[mpe: Just have cpu_show_l1tf() call cpu_show_meltdown() directly]
Link: https://lore.kernel.org/r/20191029190759.84821-1-asteinhauser@google.com


Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 8e62b02d
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