From: Borislav Petkov <bp@alien8.de>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Babu Moger <babu.moger@amd.com>,
tglx@linutronix.de, mingo@redhat.com, x86@kernel.org,
hpa@zytor.com, seanjc@google.com, vkuznets@redhat.com,
wanpengli@tencent.com, jmattson@google.com, joro@8bytes.org,
tony.luck@intel.com, peterz@infradead.org,
kyung.min.park@intel.com, wei.huang2@amd.com, jgross@suse.com,
andrew.cooper3@citrix.com, linux-kernel@vger.kernel.org,
kvm@vger.kernel.org
Subject: Re: [PATCH] KVM: x86: Expose Predictive Store Forwarding Disable
Date: Mon, 27 Sep 2021 14:06:40 +0200 [thread overview]
Message-ID: <YVGz0HXe+WNAXfdF@zn.tnic> (raw)
In-Reply-To: <fcbbdf83-128a-2519-13e8-1c5d5735a0d2@redhat.com>
On Mon, Sep 27, 2021 at 01:13:26PM +0200, Paolo Bonzini wrote:
> Because the guest kernel needs to know which MSRs to write when you touch
> the SSBD prctl, so that PSFD is properly disabled *inside the guest*.
It already knows which - the same one which disables SSB. PSF is
disabled *together* with SSB, for now...
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
next prev parent reply other threads:[~2021-09-27 12:06 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <163244601049.30292.5855870305350227855.stgit@bmoger-ubuntu>
2021-09-27 10:59 ` [PATCH] KVM: x86: Expose Predictive Store Forwarding Disable Borislav Petkov
2021-09-27 11:13 ` Paolo Bonzini
2021-09-27 12:06 ` Borislav Petkov [this message]
2021-09-27 12:14 ` Paolo Bonzini
2021-09-27 12:28 ` Borislav Petkov
2021-09-27 12:54 ` Paolo Bonzini
2021-09-27 13:38 ` Borislav Petkov
2021-09-27 15:47 ` Babu Moger
2021-09-27 15:48 ` Borislav Petkov
2021-09-28 16:04 ` Paolo Bonzini
2021-09-29 20:27 ` Babu Moger
2021-09-30 13:41 ` Paolo Bonzini
2021-09-30 14:12 ` Babu Moger
2022-08-23 21:26 ` Jim Mattson
2022-08-24 17:13 ` Paolo Bonzini
2022-08-24 17:16 ` Jim Mattson
2022-08-26 10:10 ` Paolo Bonzini
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