linux-kernel - [Part2 PATCH v9 17/38] crypto: ccp: Implement SEV_PDH

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Message-Id: <20171205010438.5773-18-brijesh.singh@amd.com>
Date:   Mon,  4 Dec 2017 19:04:17 -0600
From:   Brijesh Singh <brijesh.singh@....com>
To:     kvm@...r.kernel.org, linux-kernel@...r.kernel.org, x86@...nel.org
Cc:     bp@...en8.de, Brijesh Singh <brijesh.singh@....com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Radim Krčmář <rkrcmar@...hat.com>,
        Borislav Petkov <bp@...e.de>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Gary Hook <gary.hook@....com>,
        Tom Lendacky <thomas.lendacky@....com>,
        linux-crypto@...r.kernel.org
Subject: [Part2 PATCH v9 17/38] crypto: ccp: Implement SEV_PDH_GEN ioctl command

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 <pbonzini@...hat.com>
Cc: "Radim Krčmář" <rkrcmar@...hat.com>
Cc: Borislav Petkov <bp@...e.de>
Cc: Herbert Xu <herbert@...dor.apana.org.au>
Cc: Gary Hook <gary.hook@....com>
Cc: Tom Lendacky <thomas.lendacky@....com>
Cc: linux-crypto@...r.kernel.org
Cc: kvm@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Signed-off-by: Brijesh Singh <brijesh.singh@....com>
Reviewed-by: Borislav Petkov <bp@...e.de>
Acked-by: Gary R Hook <gary.hook@....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 8aa8036023e0..fd3daf0a1176 100644
--- a/drivers/crypto/ccp/psp-dev.c
+++ b/drivers/crypto/ccp/psp-dev.c
@@ -333,6 +333,9 @@ 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