From: Lucas Nussbaum <lucas.nussbaum@inria.fr>
To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Brijesh Singh <brijesh.singh@amd.com>,
linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org,
stable@kernel.org, Tom Lendacky <thomas.lendacky@amd.com>,
Joerg Roedel <jroedel@suse.de>,
David Rientjes <rientjes@google.com>
Subject: Re: [PATCH] crypto: ccp: shutdown SEV firmware on kexec
Date: Mon, 23 Aug 2021 09:32:56 +0200 [thread overview]
Message-ID: <YSNPKPPjEFxGT0Dc@xanadu.blop.info> (raw)
In-Reply-To: <20210806121442.GB25554@gondor.apana.org.au>
On 06/08/21 at 20:14 +0800, Herbert Xu wrote:
> On Wed, Jul 28, 2021 at 10:15:21AM -0500, Brijesh Singh wrote:
> > The commit 97f9ac3db6612 ("crypto: ccp - Add support for SEV-ES to the
> > PSP driver") added support to allocate Trusted Memory Region (TMR)
> > used during the SEV-ES firmware initialization. The TMR gets locked
> > during the firmware initialization and unlocked during the shutdown.
> > While the TMR is locked, access to it is disallowed.
> >
> > Currently, the CCP driver does not shutdown the firmware during the
> > kexec reboot, leaving the TMR memory locked.
> >
> > Register a callback to shutdown the SEV firmware on the kexec boot.
> >
> > Fixes: 97f9ac3db6612 ("crypto: ccp - Add support for SEV-ES to the PSP driver")
> > Reported-by: Lucas Nussbaum <lucas.nussbaum@inria.fr>
> > Tested-by: Lucas Nussbaum <lucas.nussbaum@inria.fr>
> > Cc: <stable@kernel.org>
> > Cc: Tom Lendacky <thomas.lendacky@amd.com>
> > Cc: Joerg Roedel <jroedel@suse.de>
> > Cc: Herbert Xu <herbert@gondor.apana.org.au>
> > Cc: David Rientjes <rientjes@google.com>
> > Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
> > ---
> > drivers/crypto/ccp/sev-dev.c | 49 +++++++++++++++++-------------------
> > drivers/crypto/ccp/sp-pci.c | 12 +++++++++
> > 2 files changed, 35 insertions(+), 26 deletions(-)
>
> Patch applied. Thanks.
Could this be backported to 5.10 as well?
Thanks
--
Lucas Nussbaum <lucas.nussbaum@inria.fr> +33 3 54 95 86 19
Responsable du programme plateformes d'expérimentation
DDO-SDT - Direction Générale Déléguée à l'Innovation - Inria
prev parent reply other threads:[~2021-08-23 7:33 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-28 15:15 [PATCH] crypto: ccp: shutdown SEV firmware on kexec Brijesh Singh
2021-07-28 20:41 ` Tom Lendacky
2021-08-06 12:14 ` Herbert Xu
2021-08-23 7:32 ` Lucas Nussbaum [this message]
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