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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 30 Dec 2023 16:23:30.5201 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: e76e24b9-bb9e-465e-f901-08dc0953a93b X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: DS3PEPF000099E2.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY5PR12MB6081 X-Rspamd-Queue-Id: D6CC0100008 X-Rspam-User: X-Rspamd-Server: rspam04 X-Stat-Signature: xrjxsweb4zo9pfaxqes4de95f1wgc6cn X-HE-Tag: 1703953414-865354 X-HE-Meta: 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 ty9jDsFG zRO2bvNkD8x86cXRPrNJXSe35F8qUPlBRg6WfDId7SdTjYTtiCskWV7M5b2CAcmCS9dDieY/DSC2prUixLjGKYH6xemRe1ZtLKRyDG6/5l9ZTE5w158BDGfW5pJAe/Cm5p2IkacVgqt9YEoAR2nfyz1jqmvBsMsLyTgkfBC44Eoz1sUgH3XR9/fACQGwkRxbwNsretNpweF66D/lBT1EZRzdQcoLI0pawsi0CW9AK7Tt3M0AGXf7/2107Gg2CqeZWeAZgBhyD3mZGKt8rXBhkxiBJbGwEXiq0ChRmeLzM3vd8eOqwyM93auSntTT37juslVpD2uq9bTTlFYQcmuULhJfimVVr/tDujxm3+C2pHUH7ytLM6CfOc8X9aQ== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: Brijesh Singh Export sev_do_cmd() as a generic API for the hypervisor to issue commands to manage an SEV and SNP guest. The commands for SEV and SNP are defined in the SEV and SEV-SNP firmware specifications. Signed-off-by: Brijesh Singh Signed-off-by: Ashish Kalra [mdr: kernel-doc fixups] Signed-off-by: Michael Roth --- drivers/crypto/ccp/sev-dev.c | 3 ++- include/linux/psp-sev.h | 19 +++++++++++++++++++ 2 files changed, 21 insertions(+), 1 deletion(-) diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c index 85634d4f8cfe..767f0ec3d5bb 100644 --- a/drivers/crypto/ccp/sev-dev.c +++ b/drivers/crypto/ccp/sev-dev.c @@ -431,7 +431,7 @@ static int __sev_do_cmd_locked(int cmd, void *data, int *psp_ret) return ret; } -static int sev_do_cmd(int cmd, void *data, int *psp_ret) +int sev_do_cmd(int cmd, void *data, int *psp_ret) { int rc; @@ -441,6 +441,7 @@ static int sev_do_cmd(int cmd, void *data, int *psp_ret) return rc; } +EXPORT_SYMBOL_GPL(sev_do_cmd); static int __sev_init_locked(int *error) { diff --git a/include/linux/psp-sev.h b/include/linux/psp-sev.h index a39a9e5b5bc4..0581f194cdd0 100644 --- a/include/linux/psp-sev.h +++ b/include/linux/psp-sev.h @@ -914,6 +914,22 @@ int sev_guest_df_flush(int *error); */ int sev_guest_decommission(struct sev_data_decommission *data, int *error); +/** + * sev_do_cmd - issue an SEV or an SEV-SNP command + * + * @cmd: SEV or SEV-SNP firmware command to issue + * @data: arguments for firmware command + * @psp_ret: SEV command return code + * + * Returns: + * 0 if the SEV successfully processed the command + * -%ENODEV if the PSP device is not available + * -%ENOTSUPP if PSP device does not support SEV + * -%ETIMEDOUT if the SEV command timed out + * -%EIO if PSP device returned a non-zero return code + */ +int sev_do_cmd(int cmd, void *data, int *psp_ret); + void *psp_copy_user_blob(u64 uaddr, u32 len); #else /* !CONFIG_CRYPTO_DEV_SP_PSP */ @@ -929,6 +945,9 @@ sev_guest_deactivate(struct sev_data_deactivate *data, int *error) { return -ENO static inline int sev_guest_decommission(struct sev_data_decommission *data, int *error) { return -ENODEV; } +static inline int +sev_do_cmd(int cmd, void *data, int *psp_ret) { return -ENODEV; } + static inline int sev_guest_activate(struct sev_data_activate *data, int *error) { return -ENODEV; } -- 2.25.1