From: Jiri Slaby <jirislaby@kernel.org>
To: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>, stable@vger.kernel.org
Cc: Dave Hansen <dave.hansen@linux.intel.com>,
Alyssa Milburn <alyssa.milburn@intel.com>,
Andrew Cooper <andrew.cooper3@citrix.com>,
Peter Zijlstra <peterz@infradead.org>,
Dave Hansen <dave.hansen@intel.com>,
Sean Christopherson <seanjc@google.com>,
Nikolay Borisov <nik.borisov@suse.com>
Subject: Re: [PATCH 6.1.y 0/6] Delay VERW - 6.1.y backport
Date: Tue, 27 Feb 2024 09:21:33 +0100 [thread overview]
Message-ID: <7f75bfa1-03a1-4802-bf5d-3d7dfff281c2@kernel.org> (raw)
In-Reply-To: <20240226-delay-verw-backport-6-1-y-v1-0-b3a2c5b9b0cb@linux.intel.com>
On 27. 02. 24, 9:00, Pawan Gupta wrote:
> This is the backport of recently upstreamed series that moves VERW
> execution to a later point in exit-to-user path. This is needed because
> in some cases it may be possible for data accessed after VERW executions
> may end into MDS affected CPU buffers. Moving VERW closer to ring
> transition reduces the attack surface.
>
> Patch 1/6 includes a minor fix that is queued for upstream:
> https://lore.kernel.org/lkml/170899674562.398.6398007479766564897.tip-bot2@tip-bot2/
Ah, you note it here.
But you should include this patch on its own instead of merging it to
1/6. You might need to wait until it is in linus' tree, though.
regards,
--
js
suse labs
next prev parent reply other threads:[~2024-02-27 8:21 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-27 8:00 [PATCH 6.1.y 0/6] Delay VERW - 6.1.y backport Pawan Gupta
2024-02-27 8:00 ` [PATCH 6.1.y 1/6] x86/bugs: Add asm helpers for executing VERW Pawan Gupta
2024-02-27 8:19 ` Jiri Slaby
2024-02-27 8:40 ` Pawan Gupta
2024-02-27 8:00 ` [PATCH 6.1.y 2/6] x86/entry_64: Add VERW just before userspace transition Pawan Gupta
2024-02-27 8:00 ` [PATCH 6.1.y 3/6] x86/entry_32: " Pawan Gupta
2024-02-27 8:00 ` [PATCH 6.1.y 4/6] x86/bugs: Use ALTERNATIVE() instead of mds_user_clear static key Pawan Gupta
2024-02-27 8:00 ` [PATCH 6.1.y 5/6] KVM/VMX: Use BT+JNC, i.e. EFLAGS.CF to select VMRESUME vs. VMLAUNCH Pawan Gupta
2024-02-27 8:00 ` [PATCH 6.1.y 6/6] KVM/VMX: Move VERW closer to VMentry for MDS mitigation Pawan Gupta
2024-02-27 8:21 ` Jiri Slaby [this message]
2024-02-27 8:56 ` [PATCH 6.1.y 0/6] Delay VERW - 6.1.y backport Pawan Gupta
2024-02-27 9:09 ` Greg KH
2024-02-29 9:53 ` Pawan Gupta
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