[PATCH] selftests/powerpc: Handle more misreporting cases in spectre_v2

[Michael Ellerman]

On Tue, 8 Jun 2021 16:48:09 +1000, Russell Currey wrote:
> In commit f3054ffd71b5 ("selftests/powerpc: Return skip code for
> spectre_v2"), the spectre_v2 selftest is updated to be aware of cases
> where the vulnerability status reported in sysfs is incorrect, skipping
> the test instead.
> 
> This happens because qemu can misrepresent the mitigation status of the
> host to the guest.  If the count cache is disabled in the host, and this
> is correctly reported to the guest, then the guest won't apply
> mitigations.  If the guest is then migrated to a new host where
> mitigations are necessary, it is now vulnerable because it has not
> applied mitigations.
> 
> [...]

Applied to powerpc/next.

[1/1] selftests/powerpc: Handle more misreporting cases in spectre_v2
      https://git.kernel.org/powerpc/c/48482f4dd3432e5e62873bf0f2e254cfb8ce2ac2

cheers