Messages in this thread | | | Date | Fri, 6 Aug 2021 20:14:43 +0800 | From | Herbert Xu <> | Subject | Re: [PATCH] crypto: ccp: shutdown SEV firmware on kexec |
| |
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. -- Email: Herbert Xu <herbert@gondor.apana.org.au> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
| |