Description: x86/paravirt: Fix spectre-v2 mitigations for paravirt guests
References:
 https://twitter.com/grsecurity/status/1029324426142199808
Notes:
Bugs:
upstream: released (4.19-rc1) [5800dc5c19f34e6e03b5adab1282535cb102fafd]
4.9-upstream-stable: released (4.9.120) [640fe070d801b91081b7c9e3575b1ed2f0018eeb]
3.16-upstream-stable: released (3.16.58) [x86-paravirt-fix-spectre-v2-mitigations-for-paravirt-guests.patch]
sid: released (4.17.17-1)
4.9-stretch-security: released (4.9.110-3+deb9u5) [bugfix/x86/x86-paravirt-Fix-spectre-v2-mitigations-for-paravirt.patch]
3.16-jessie-security: released (3.16.59-1)