linux-kernel - Re: [PATCH v4 1/1] x86/cpufeatures: Implement Predictive Store Forwarding control.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Fri, 30 Apr 2021 18:01:08 -0700
From:   Reiji Watanabe <reijiw@...gle.com>
To:     Borislav Petkov <bp@...en8.de>
Cc:     Ramakrishna Saripalli <rsaripal@....com>,
        linux-kernel@...r.kernel.org, x86@...nel.org, tglx@...utronix.de,
        mingo@...hat.com, hpa@...or.com, Jonathan Corbet <corbet@....net>,
        bsd@...hat.com
Subject: Re: [PATCH v4 1/1] x86/cpufeatures: Implement Predictive Store
 Forwarding control.

> > Could you please clarify ?
>
> Clarify what?

I'm sorry, I overlooked the response from Ramakrishna today.
So, Never mind...


> I asked you whether you have a VM use case. Since you're talking/asking
> about virt support, you likely have some use case in mind...

When PSFD is available on the host (and the feature is exposed to
its guest), basically, we would like to let the guest enable or
disable PSFD on any vCPUs as it likes.

Thanks,
Reiji