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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Feb 2025 20:54:18.4321 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 67c8e487-482b-41ce-5753-08dd51279400 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: SA2PEPF00003F61.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA1PR12MB7272 From: Ashish Kalra Add new API interface to do SEV/SNP platform shutdown when KVM module is unloaded. Reviewed-by: Dionna Glaze Signed-off-by: Ashish Kalra Reviewed-by: Tom Lendacky --- drivers/crypto/ccp/sev-dev.c | 13 +++++++++++++ include/linux/psp-sev.h | 3 +++ 2 files changed, 16 insertions(+) diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c index 582304638319..f0f3e6d29200 100644 --- a/drivers/crypto/ccp/sev-dev.c +++ b/drivers/crypto/ccp/sev-dev.c @@ -2445,6 +2445,19 @@ static void sev_firmware_shutdown(struct sev_device *sev) mutex_unlock(&sev_cmd_mutex); } +void sev_platform_shutdown(void) +{ + struct sev_device *sev; + + if (!psp_master || !psp_master->sev_data) + return; + + sev = psp_master->sev_data; + + sev_firmware_shutdown(sev); +} +EXPORT_SYMBOL_GPL(sev_platform_shutdown); + void sev_dev_destroy(struct psp_device *psp) { struct sev_device *sev = psp->sev_data; diff --git a/include/linux/psp-sev.h b/include/linux/psp-sev.h index f3cad182d4ef..0b3a36bdaa90 100644 --- a/include/linux/psp-sev.h +++ b/include/linux/psp-sev.h @@ -954,6 +954,7 @@ int sev_do_cmd(int cmd, void *data, int *psp_ret); void *psp_copy_user_blob(u64 uaddr, u32 len); void *snp_alloc_firmware_page(gfp_t mask); void snp_free_firmware_page(void *addr); +void sev_platform_shutdown(void); #else /* !CONFIG_CRYPTO_DEV_SP_PSP */ @@ -988,6 +989,8 @@ static inline void *snp_alloc_firmware_page(gfp_t mask) static inline void snp_free_firmware_page(void *addr) { } +static inline void sev_platform_shutdown(void) { } + #endif /* CONFIG_CRYPTO_DEV_SP_PSP */ #endif /* __PSP_SEV_H__ */