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Tue, 13 Sep 2016 14:48:45 +0000 From: Brijesh Singh To: , , , , , , , , Date: Tue, 13 Sep 2016 10:48:38 -0400 Message-ID: <147377811888.11859.2777245831487772253.stgit@brijesh-build-machine> In-Reply-To: <147377800565.11859.4411044563640180545.stgit@brijesh-build-machine> References: <147377800565.11859.4411044563640180545.stgit@brijesh-build-machine> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 X-Originating-IP: [165.204.77.1] X-ClientProxiedBy: CY1PR08CA0003.namprd08.prod.outlook.com (10.163.94.141) To BLUPR12MB0657.namprd12.prod.outlook.com (10.163.217.27) X-MS-Office365-Filtering-Correlation-Id: 8bd5c234-b6f4-430c-1db7-08d3dbe510bd X-Microsoft-Exchange-Diagnostics: 1; BLUPR12MB0657; 2:c0iTZVdNjl8yfLQVcLGOK6k5KmmOWk7e5T0cWFllrE/XIIX/+qEUTyHpz994aS5ipQ0kUO+p2emqQQpFK4aQy1SBBwnoW1Tz7a4qmIGWQIPTz2pqz7ndWbr0RiVEi3Z2IzQM+HLfot6XzfRuKq6sNzh36f5Is7DqPSz7ybW3WfBy1NutpZdHh6uN7pISQu7+; 3:UEO46+zoE7lV3yp3RkxOs+czqxkLWEFnpVo1EsxpZm/oDcGwu8X41ZoiGdiiJ/o56xyeplsdnNg7Ib1VWcrMdUTJBXfoXZikmdjcd8y9RJ2CAzixmAoIZ2/T4rPFBVUQ; 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*/ int kvm_sev_dbg_decrypt(uint8_t *dest, const uint8_t *src, uint32_t len); +/** + * kvm_sev_dbg_encrypt - encrypt the guest memory in SEV mode. + * @src - guest memory address + * @dest - host memory address where the encrypted data should be copied + * @length - length of memory region + * + * Returns: 0 on success and dest will contains the encrypted data + */ +int kvm_sev_dbg_encrypt(uint8_t *dest, const uint8_t *src, uint32_t len); + #endif diff --git a/sev.c b/sev.c index c7031d3..4e5da84 100644 --- a/sev.c +++ b/sev.c @@ -455,3 +455,26 @@ int kvm_sev_dbg_decrypt(uint8_t *dst, const uint8_t *src, uint32_t len) DPRINTF("SEV: DBG_DECRYPT dst %p src %p sz %d\n", dst, src, len); return 0; } + +int kvm_sev_dbg_encrypt(uint8_t *dst, const uint8_t *src, uint32_t len) +{ + int ret; + struct kvm_sev_dbg_encrypt encrypt; + struct kvm_sev_issue_cmd input; + + encrypt.src_addr = (unsigned long)src; + encrypt.dst_addr = (unsigned long)dst; + encrypt.length = len; + + input.cmd = KVM_SEV_DBG_ENCRYPT; + input.opaque = (unsigned long)&encrypt; + ret = kvm_vm_ioctl(kvm_state, KVM_SEV_ISSUE_CMD, &input); + if (ret) { + fprintf(stderr, "SEV: dbg_encrypt failed ret=%d(%#010x)\n", + ret, input.ret_code); + return 1; + } + + DPRINTF("SEV: DBG_ENCRYPT dst %p src %p sz %d\n", dst, src, len); + return 0; +}