From: Borislav Petkov <bp@alien8.de>
To: Sean Christopherson <seanjc@google.com>, Amit Shah <amit@kernel.org>
Cc: pbonzini@redhat.com, x86@kernel.org, kvm@vger.kernel.org,
linux-kernel@vger.kernel.org, amit.shah@amd.com,
tglx@linutronix.de, mingo@redhat.com,
dave.hansen@linux.intel.com, hpa@zytor.com, kim.phillips@amd.com,
david.kaplan@amd.com
Subject: Re: [PATCH v2] KVM: SVM: let alternatives handle the cases when RSB filling is required
Date: Sat, 29 Jun 2024 12:28:24 +0200 [thread overview]
Message-ID: <20240629101930.GAZn_fssQgI2eoSXC7@fat_crate.local> (raw)
In-Reply-To: <Zn7gK9KZKxBwgVc_@google.com>
On Fri, Jun 28, 2024 at 09:09:15AM -0700, Sean Christopherson wrote:
> Hmm, but it looks like that would incorrectly trigger the "lite" flavor for
> families 0xf - 0x12. I assume those old CPUs aren't affected by whatever on earth
> EIBRS_PBRSB is.
https://www.intel.com/content/www/us/en/developer/articles/technical/software-security-guidance/advisory-guidance/post-barrier-return-stack-buffer-predictions.html
We could add NO_EIBRS_PBRSB to those old families too. Amit, feel free
to send a separate patch.
Thx.
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
prev parent reply other threads:[~2024-06-29 10:28 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-26 7:37 Amit Shah
2024-06-28 16:09 ` Sean Christopherson
2024-06-28 18:48 ` Jim Mattson
2024-07-01 12:52 ` Amit Shah
2024-07-01 13:40 ` Kaplan, David
2024-07-08 18:59 ` Sean Christopherson
2024-07-15 8:35 ` Amit Shah
2024-07-16 19:10 ` Sean Christopherson
2024-07-22 11:55 ` Amit Shah
2024-09-10 17:06 ` Sean Christopherson
2024-06-29 10:28 ` Borislav Petkov [this message]
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