From: Ashish Kalra Date: Fri, 6 Feb 2026 21:26:45 +0000 (+0000) Subject: crypto: ccp - allow callers to use HV-Fixed page API when SEV is disabled X-Git-Tag: v7.0-rc3~31^2~2 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=8168a7b72bdee3790b126f63bd30306759206b15;p=thirdparty%2Fkernel%2Flinux.git crypto: ccp - allow callers to use HV-Fixed page API when SEV is disabled 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 Reviewed-by: Tom Lendacky Signed-off-by: Herbert Xu --- diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c index 096f993974d1..8b2dfc11289b 100644 --- a/drivers/crypto/ccp/sev-dev.c +++ b/drivers/crypto/ccp/sev-dev.c @@ -1105,15 +1105,12 @@ 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); /* @@ -1126,7 +1123,8 @@ 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 */ @@ -1162,7 +1160,7 @@ 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; /*