On Mon, Nov 11, 2019 at 02:36:34PM +0000, Suzuki K Poulose wrote:

On 08/11/2019 17:01, Mark Brown wrote:

quoted

+	/*
+	 * E0PD does a similar job to KPTI so can be used instead
+	 * where available. This will only run before the cpufeature

s/This will only run/This will run/ ?

Both with and without patch 4 we only check this when cpucaps aren't
ready - with just this patch this is done in arm64_kernel_use_ng_mappings()
where it has a check for caps being ready prior to checking if KASLR
requirs KPTI, or otherwise the checks are from the cpufeature code while
it's running.  With patch 4 it's only called from the cpufeature code or
from the early init check.