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SubjectRe: [PATCH v6 04/10] arm64: Advertise mitigation of Spectre-v2, or lack thereof

On 21/03/2019 23:05, Jeremy Linton wrote:
> From: Marc Zyngier <>
> 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.
> Signed-off-by: Marc Zyngier <>
> [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 <>
> Reviewed-by: Andre Przywara <>
> Tested-by: Stefan Wahren <>
> ---

Reviewed-by: Suzuki K Poulose <>

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