kernel.git/arch/arm64/kernel/ssbd.c, branch linux-4.17.yHosts the 0x221E linux distro kernel.
https://git.0xinfinity.dev/distro/kernel.git/atom?h=linux-4.17.y2018-07-22T13:16:08Zarm64: ssbd: Add prctl interface for per-thread mitigation2018-07-22T13:16:08ZMarc Zyngier2018-07-20T09:47:18Zurn:sha1:1e7eaefb33c912f2738e15925f86ff5027bc3e01
commit 9cdc0108baa8ef87c76ed834619886a46bd70cbe upstream.
If running on a system that performs dynamic SSBD mitigation, allow
userspace to request the mitigation for itself. This is implemented
as a prctl call, allowing the mitigation to be enabled or disabled at
will for this particular thread.
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>