linux-kernel - Re: [PATCH v8 4/4] kexec, KEYS, s390: Make use of built-in and secondary keyring for signature verification

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Message-ID: <20220519003902.GE156677@MiWiFi-R3L-srv>
Date:   Thu, 19 May 2022 08:39:02 +0800
From:   Baoquan He <bhe@...hat.com>
To:     Heiko Carstens <hca@...ux.ibm.com>, akpm@...ux-foundation.org,
        zohar@...ux.ibm.com
Cc:     Coiby Xu <coxu@...hat.com>, kexec@...ts.infradead.org,
        keyrings@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Michal Suchanek <msuchanek@...e.de>,
        Dave Young <dyoung@...hat.com>, Will Deacon <will@...nel.org>,
        "Eric W . Biederman" <ebiederm@...ssion.com>,
        Mimi Zohar <zohar@...ux.ibm.com>, Chun-Yi Lee <jlee@...e.com>,
        stable@...r.kernel.org, Philipp Rudo <prudo@...ux.ibm.com>,
        linux-security-module@...r.kernel.org,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Alexander Gordeev <agordeev@...ux.ibm.com>,
        Christian Borntraeger <borntraeger@...ux.ibm.com>,
        Sven Schnelle <svens@...ux.ibm.com>,
        Martin Schwidefsky <schwidefsky@...ibm.com>,
        "open list:S390" <linux-s390@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v8 4/4] kexec, KEYS, s390: Make use of built-in and
 secondary keyring for signature verification

On 05/18/22 at 01:29pm, Heiko Carstens wrote:
> On Thu, May 12, 2022 at 03:01:23PM +0800, Coiby Xu wrote:
> > From: Michal Suchanek <msuchanek@...e.de>
> > 
> > commit e23a8020ce4e ("s390/kexec_file: Signature verification prototype")
> > adds support for KEXEC_SIG verification with keys from platform keyring
> > but the built-in keys and secondary keyring are not used.
> > 
> > Add support for the built-in keys and secondary keyring as x86 does.
> > 
> > Fixes: e23a8020ce4e ("s390/kexec_file: Signature verification prototype")
> > Cc: stable@...r.kernel.org
> > Cc: Philipp Rudo <prudo@...ux.ibm.com>
> > Cc: kexec@...ts.infradead.org
> > Cc: keyrings@...r.kernel.org
> > Cc: linux-security-module@...r.kernel.org
> > Signed-off-by: Michal Suchanek <msuchanek@...e.de>
> > Reviewed-by: "Lee, Chun-Yi" <jlee@...e.com>
> > Acked-by: Baoquan He <bhe@...hat.com>
> > Signed-off-by: Coiby Xu <coxu@...hat.com>
> > ---
> >  arch/s390/kernel/machine_kexec_file.c | 18 +++++++++++++-----
> >  1 file changed, 13 insertions(+), 5 deletions(-)
> 
> As far as I can tell this doesn't have any dependency to the other
> patches in this series, so should I pick this up for the s390 tree, or
> how will this go upstream?

Thanks, Heiko.

I want to ask Mimi if this can be taken into KEYS-ENCRYPTED tree.
Otherwise I will ask Andrew to help pick this whole series.

Surely, this patch 4 can be taken into s390 seperately since it's
independent, both looks good.

Thanks
Baoquan