Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Date:   Tue, 25 May 2021 08:55:30 +0200
From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     Juergen Gross <jgross@suse.com>
Cc:     linux-kernel@vger.kernel.org, stable@vger.kernel.org,
        Olaf Hering <olaf@aepfle.de>, Jan Beulich <jbeulich@suse.com>
Subject: Re: [PATCH 4.19 49/49] x86/Xen: swap NX determination and GDT setup
 on BSP
Message-ID: <YKyfYm4en8RZNZtL@kroah.com>
References: <20210524152324.382084875@linuxfoundation.org>
 <20210524152325.958181984@linuxfoundation.org>
 <bdadfa45-0496-9d47-cca0-b0839b811ae9@suse.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <bdadfa45-0496-9d47-cca0-b0839b811ae9@suse.com>
Precedence: bulk

On Tue, May 25, 2021 at 07:11:21AM +0200, Juergen Gross wrote:
> On 24.05.21 17:26, Greg Kroah-Hartman wrote:
> > From: Jan Beulich <jbeulich@suse.com>
> > 
> > commit ae897fda4f507e4b239f0bdfd578b3688ca96fb4 upstream.
> > 
> > xen_setup_gdt(), via xen_load_gdt_boot(), wants to adjust page tables.
> > For this to work when NX is not available, x86_configure_nx() needs to
> > be called first.
> > 
> > [jgross] Note that this is a revert of 36104cb9012a82e73 ("x86/xen:
> > Delay get_cpu_cap until stack canary is established"), which is possible
> > now that we no longer support running as PV guest in 32-bit mode.
> > 
> > Cc: <stable.vger.kernel.org> # 5.9
> 
> Sorry for messing up the stable link, but please don't include this
> patch in stable kernels before 5.9

Now dropped, thanks for reminding me.

greg k-h