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Date: Mon, 14 Jun 2021 20:27:36 +0300
From: Andy Shevchenko <andy.shevchenko@gmail.com>
Subject: Re: [PATCH v1 0/2] firmware: dmi_scan: Make it work in kexec'ed kernel
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To: Dave Young <dyoung@redhat.com>
Cc: Jean Delvare <jdelvare@suse.com>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, Mika Westerberg <mika.westerberg@linux.intel.com>, Javier =?iso-8859-1?B?VGnh?= <javier.tia@gmail.com>, kexec@lists.infradead.org, Eric Biederman <ebiederm@xmission.com>, linux-efi <linux-efi@vger.kernel.org>, Matt Fleming <matt@codeblueprint.co.uk>, Ard Biesheuvel <ardb@kernel.org>

On Mon, Jun 14, 2021 at 08:07:33PM +0300, Andy Shevchenko wrote:
> On Mon, Jun 14, 2021 at 06:38:30PM +0300, Andy Shevchenko wrote:
> > On Sat, Jun 12, 2021 at 12:40:57PM +0800, Dave Young wrote:
> > > > Probably it is doable to have kexec on 32bit efi working
> > > > without runtime service support, that means no need the trick of fixed
> > > > mapping.
> > > > 
> > > > If I can restore my vm to boot 32bit efi on this weekend then I may provide some draft
> > > > patches for test.
> > > 
> > > Unfortunately I failed to setup a 32bit efi guest,  here are some
> > > untested draft patches, please have a try.
> > 
> > Thanks for the patches.
> > 
> > As previously, I have reverted my hacks and applied your patches (also I
> > dropped patches from previous mail against kernel and kexec-tools) for both
> > kernel and user space on first and second environments.
> > 
> > It does NOT solve the issue.
> > 
> > If there is no idea pops up soon, I'm going to resend my series that
> > workarounds the issue.
> 
> Hold on, I may have made a mistake during testing. Let me retest this.

Double checked, confirmed that it's NOT working.

-- 
With Best Regards,
Andy Shevchenko



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