The SEV_PDH_GEN command is used to re-generate the Platform
Diffie-Hellman (PDH) key. The command is defined in SEV spec section
5.6.

Cc: Paolo Bonzini <pbonz...@redhat.com>
Cc: "Radim Krčmář" <rkrc...@redhat.com>
Cc: Borislav Petkov <b...@suse.de>
Cc: Herbert Xu <herb...@gondor.apana.org.au>
Cc: Gary Hook <gary.h...@amd.com>
Cc: Tom Lendacky <thomas.lenda...@amd.com>
Cc: linux-cry...@vger.kernel.org
Cc: k...@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Brijesh Singh <brijesh.si...@amd.com>
---
 drivers/crypto/ccp/psp-dev.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/crypto/ccp/psp-dev.c b/drivers/crypto/ccp/psp-dev.c
index 1d7212da25a5..d9771d104eea 100644
--- a/drivers/crypto/ccp/psp-dev.c
+++ b/drivers/crypto/ccp/psp-dev.c
@@ -239,6 +239,9 @@ static long sev_ioctl(struct file *file, unsigned int 
ioctl, unsigned long arg)
        case SEV_PEK_GEN:
                ret = sev_ioctl_do_pek_pdh_gen(SEV_CMD_PEK_GEN, &input);
                break;
+       case SEV_PDH_GEN:
+               ret = sev_ioctl_do_pek_pdh_gen(SEV_CMD_PDH_GEN, &input);
+               break;
        default:
                ret = -EINVAL;
                goto out;
-- 
2.9.5

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