David Gibson writes:
> For POWER9 DD2.2 cpus, the best current Spectre v2 indirect branch
> mitigation is "count cache disabled", which is configured with:
> -machine cap-ibs=fixed-ccd
> However, this option isn't available on DD2.3 CPUs with KVM, because they
> don't have the count cache disa
On Thu, Jan 30, 2020 at 09:48:49AM +0100, Greg Kurz wrote:
> On Thu, 30 Jan 2020 12:26:22 +1100
> David Gibson wrote:
>
> > For POWER9 DD2.2 cpus, the best current Spectre v2 indirect branch
> > mitigation is "count cache disabled", which is configured with:
> > -machine cap-ibs=fixed-ccd
> >
On Thu, 30 Jan 2020 09:09:18 +0100
Laurent Vivier wrote:
> On 30/01/2020 02:26, David Gibson wrote:
> > For POWER9 DD2.2 cpus, the best current Spectre v2 indirect branch
> > mitigation is "count cache disabled", which is configured with:
> > -machine cap-ibs=fixed-ccd
> > However, this optio
On Thu, 30 Jan 2020 12:26:22 +1100
David Gibson wrote:
> For POWER9 DD2.2 cpus, the best current Spectre v2 indirect branch
> mitigation is "count cache disabled", which is configured with:
> -machine cap-ibs=fixed-ccd
> However, this option isn't available on DD2.3 CPUs with KVM, because the
On 30/01/2020 02:26, David Gibson wrote:
> For POWER9 DD2.2 cpus, the best current Spectre v2 indirect branch
> mitigation is "count cache disabled", which is configured with:
> -machine cap-ibs=fixed-ccd
> However, this option isn't available on DD2.3 CPUs with KVM, because they
> don't have t
For POWER9 DD2.2 cpus, the best current Spectre v2 indirect branch
mitigation is "count cache disabled", which is configured with:
-machine cap-ibs=fixed-ccd
However, this option isn't available on DD2.3 CPUs with KVM, because they
don't have the count cache disabled.
For POWER9 DD2.3 cpus, it
