diff options
| author | Ashish Kalra <ashish.kalra@amd.com> | 2026-02-06 21:26:45 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-03-19 16:08:38 +0100 |
| commit | d0e63feca3808c15a1e8d58df0c98fb60b7da4ed (patch) | |
| tree | cf25207d0afe6b9c0b7ad172a21979a2472a84ca /drivers | |
| parent | a4d0e2c416db0bbc421a0e9767a9c48d6d9d2599 (diff) | |
crypto: ccp - allow callers to use HV-Fixed page API when SEV is disabled
commit 8168a7b72bdee3790b126f63bd30306759206b15 upstream.
When SEV is disabled, the HV-Fixed page allocation call fails, which in
turn causes SFS initialization to fail.
Fix the HV-Fixed API so callers (for example, SFS) can use it even when
SEV is disabled by performing normal page allocation and freeing.
Fixes: e09701dcdd9c ("crypto: ccp - Add new HV-Fixed page allocation/free API")
Cc: stable@vger.kernel.org
Signed-off-by: Ashish Kalra <ashish.kalra@amd.com>
Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/crypto/ccp/sev-dev.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c index 5fdba0fe4acc..b8da99bcb243 100644 --- a/drivers/crypto/ccp/sev-dev.c +++ b/drivers/crypto/ccp/sev-dev.c @@ -1109,15 +1109,12 @@ struct page *snp_alloc_hv_fixed_pages(unsigned int num_2mb_pages) { struct psp_device *psp_master = psp_get_master_device(); struct snp_hv_fixed_pages_entry *entry; - struct sev_device *sev; unsigned int order; struct page *page; - if (!psp_master || !psp_master->sev_data) + if (!psp_master) return NULL; - sev = psp_master->sev_data; - order = get_order(PMD_SIZE * num_2mb_pages); /* @@ -1130,7 +1127,8 @@ struct page *snp_alloc_hv_fixed_pages(unsigned int num_2mb_pages) * This API uses SNP_INIT_EX to transition allocated pages to HV_Fixed * page state, fail if SNP is already initialized. */ - if (sev->snp_initialized) + if (psp_master->sev_data && + ((struct sev_device *)psp_master->sev_data)->snp_initialized) return NULL; /* Re-use freed pages that match the request */ @@ -1166,7 +1164,7 @@ void snp_free_hv_fixed_pages(struct page *page) struct psp_device *psp_master = psp_get_master_device(); struct snp_hv_fixed_pages_entry *entry, *nentry; - if (!psp_master || !psp_master->sev_data) + if (!psp_master) return; /* |