| commit | 174a78a8a5c0cf421236fe14efc5559717f050df | |
| author | Daniel P. Berrangé <berrange@redhat.com> | |
| Thu, 7 Mar 2019 12:18:37 +0000 (7 12:18 +0000) | ||
| committer | Eduardo Habkost <ehabkost@redhat.com> | |
| Wed, 20 Mar 2019 15:18:15 +0000 (20 12:18 -0300) | ||
| tree | b2778e1cc5233f94f19ba63fd5ca606965526d27 | treesnapshot (tar.gz zip) |
| parent | bb4928c7cafe50ab2137a0034e350ef1bfa044d9 | commitdiff |
docs: clarify that spec-ctrl is only needed for Spectre v2
The docs currently say that the spec-ctrl feature is needed for both
Spectre variants, but it is only used to address Spectre v2. Also
remove the note about retpolines. The guest OS is usually treated
as a blackbox from host mgmt pov, so it won't have knowledge about
use of retpolines and thus should unconditionally expose spec-ctrl,
allowing the guest to decide whether to use it or not.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20190307121838.6345-2-berrange@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
The docs currently say that the spec-ctrl feature is needed for both
Spectre variants, but it is only used to address Spectre v2. Also
remove the note about retpolines. The guest OS is usually treated
as a blackbox from host mgmt pov, so it won't have knowledge about
use of retpolines and thus should unconditionally expose spec-ctrl,
allowing the guest to decide whether to use it or not.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20190307121838.6345-2-berrange@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
| docs/qemu-cpu-models.texi | diffblobblamehistory |