On Fri, 25 Jan 2019 12:07:07 -0600 Jeremy Linton <[email protected]> wrote:
> From: Marc Zyngier <[email protected]> > > We currently have a list of CPUs affected by Spectre-v2, for which > we check that the firmware implements ARCH_WORKAROUND_1. It turns > out that not all firmwares do implement the required mitigation, > and that we fail to let the user know about it. > > Instead, let's slightly revamp our checks, and rely on a whitelist > of cores that are known to be non-vulnerable, and let the user know > the status of the mitigation in the kernel log. Yeah, this looks better, I was scratching my head about that blacklist already. > Signed-off-by: Marc Zyngier <[email protected]> > [This makes more sense in front of the sysfs patch] > [Pick pieces of that patch into this and move it earlier] > Signed-off-by: Jeremy Linton <[email protected]> Reviewed-by: Andre Przywara <[email protected]> > --- arch/arm64/kernel/cpu_errata.c | 104 +++++++++++++++++---------------- > 1 file changed, 54 insertions(+), 50 deletions(-) > ....
