From: Greg KH <gregkh@linuxfoundation.org>
To: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Cc: stable@vger.kernel.org, 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 6.6.y 0/6] Delay VERW - 6.6.y backport
Date: Tue, 27 Feb 2024 10:10:25 +0100 [thread overview]
Message-ID: <2024022743-employee-untimed-af9c@gregkh> (raw)
In-Reply-To: <20240227090500.hfuo546w4cuio762@desk>
On Tue, Feb 27, 2024 at 01:05:00AM -0800, Pawan Gupta wrote:
> On Tue, Feb 27, 2024 at 09:54:00AM +0100, Greg KH wrote:
> > On Mon, Feb 26, 2024 at 09:34:14PM -0800, 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/
> >
> > Obviously I can't take this, you know that :(
> >
> > Please include the actual commit in the series, when it hits Linus's
> > tree.
>
> Backports to 6.6 and 6.7 will work without the commit waiting to be
> upstreamed.
Ok, that too is not obvious as you included it here :(
Please be more careful. Take a day and do some testing and then resend
when ready.
thanks,
greg k-h
prev parent reply other threads:[~2024-02-27 9:10 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-27 5:34 [PATCH 6.6.y 0/6] Delay VERW - 6.6.y backport Pawan Gupta
2024-02-27 5:34 ` [PATCH 6.6.y 1/6] x86/bugs: Add asm helpers for executing VERW Pawan Gupta
2024-02-27 5:34 ` [PATCH 6.6.y 2/6] x86/entry_64: Add VERW just before userspace transition Pawan Gupta
2024-02-27 5:34 ` [PATCH 6.6.y 3/6] x86/entry_32: " Pawan Gupta
2024-02-27 5:34 ` [PATCH 6.6.y 4/6] x86/bugs: Use ALTERNATIVE() instead of mds_user_clear static key Pawan Gupta
2024-02-27 5:34 ` [PATCH 6.6.y 5/6] KVM/VMX: Use BT+JNC, i.e. EFLAGS.CF to select VMRESUME vs. VMLAUNCH Pawan Gupta
2024-02-27 5:34 ` [PATCH 6.6.y 6/6] KVM/VMX: Move VERW closer to VMentry for MDS mitigation Pawan Gupta
2024-02-27 8:54 ` [PATCH 6.6.y 0/6] Delay VERW - 6.6.y backport Greg KH
2024-02-27 9:05 ` Pawan Gupta
2024-02-27 9:10 ` Greg KH [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=2024022743-employee-untimed-af9c@gregkh \
--to=gregkh@linuxfoundation.org \
--cc=alyssa.milburn@intel.com \
--cc=andrew.cooper3@citrix.com \
--cc=dave.hansen@intel.com \
--cc=dave.hansen@linux.intel.com \
--cc=nik.borisov@suse.com \
--cc=pawan.kumar.gupta@linux.intel.com \
--cc=peterz@infradead.org \
--cc=seanjc@google.com \
--cc=stable@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox