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| author | Ashish Kalra <ashish.kalra@amd.com> | 2025-03-24 21:15:47 +0000 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2025-04-08 15:54:38 +0800 |
| commit | 3f8f0133a5fc9b32d0c308530320c3f2430ba5ab (patch) | |
| tree | f41265f280d698c59df1c89d07cde9e5437f3f65 /drivers/crypto/ccp | |
| parent | 6f1d5a3513c2370bbd6115dd430906bc2f4bdc53 (diff) | |
| download | linux-3f8f0133a5fc9b32d0c308530320c3f2430ba5ab.tar.gz linux-3f8f0133a5fc9b32d0c308530320c3f2430ba5ab.tar.bz2 linux-3f8f0133a5fc9b32d0c308530320c3f2430ba5ab.zip | |
crypto: ccp - Move SEV/SNP Platform initialization to KVM
SNP initialization is forced during PSP driver probe purely because SNP
can't be initialized if VMs are running. But the only in-tree user of
SEV/SNP functionality is KVM, and KVM depends on PSP driver for the same.
Forcing SEV/SNP initialization because a hypervisor could be running
legacy non-confidential VMs make no sense.
This patch removes SEV/SNP initialization from the PSP driver probe
time and moves the requirement to initialize SEV/SNP functionality
to KVM if it wants to use SEV/SNP.
Suggested-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Alexey Kardashevskiy <aik@amd.com>
Signed-off-by: Ashish Kalra <ashish.kalra@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/ccp')
| -rw-r--r-- | drivers/crypto/ccp/sev-dev.c | 13 |
1 files changed, 0 insertions, 13 deletions
diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c index 671347702ae7..980b3d296dc6 100644 --- a/drivers/crypto/ccp/sev-dev.c +++ b/drivers/crypto/ccp/sev-dev.c @@ -1347,10 +1347,6 @@ static int _sev_platform_init_locked(struct sev_platform_init_args *args) if (sev->state == SEV_STATE_INIT) return 0; - /* - * Legacy guests cannot be running while SNP_INIT(_EX) is executing, - * so perform SEV-SNP initialization at probe time. - */ rc = __sev_snp_init_locked(&args->error); if (rc && rc != -ENODEV) return rc; @@ -2524,9 +2520,7 @@ EXPORT_SYMBOL_GPL(sev_issue_cmd_external_user); void sev_pci_init(void) { struct sev_device *sev = psp_master->sev_data; - struct sev_platform_init_args args = {0}; u8 api_major, api_minor, build; - int rc; if (!sev) return; @@ -2549,13 +2543,6 @@ void sev_pci_init(void) api_major, api_minor, build, sev->api_major, sev->api_minor, sev->build); - /* Initialize the platform */ - args.probe = true; - rc = sev_platform_init(&args); - if (rc) - dev_err(sev->dev, "SEV: failed to INIT error %#x, rc %d\n", - args.error, rc); - return; err: |