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authorBorislav Petkov (AMD)2024-02-05 16:46:01 +0100
committerHerbert Xu2024-02-17 09:09:16 +0800
commit6e031ef2c201cea07bea3b286ed151378c4099f3 (patch)
tree836c2a522b7a3a3c34c1aba6401f6525b047848b /drivers/crypto
parente8829ef1f73fa4051a936ab9f0204195dae4ef2b (diff)
crypto: ccp - State in dmesg that TSME is enabled
In the case when only TSME is enabled, it is useful to state that fact too, so that users are aware that memory encryption is still enabled even when the corresponding software variant of memory encryption is not enabled. Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Acked-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto')
-rw-r--r--drivers/crypto/ccp/psp-dev.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/crypto/ccp/psp-dev.c b/drivers/crypto/ccp/psp-dev.c
index 124a2e0c8999..56bf832c2947 100644
--- a/drivers/crypto/ccp/psp-dev.c
+++ b/drivers/crypto/ccp/psp-dev.c
@@ -156,11 +156,14 @@ static unsigned int psp_get_capability(struct psp_device *psp)
}
psp->capability = val;
- /* Detect if TSME and SME are both enabled */
+ /* Detect TSME and/or SME status */
if (PSP_CAPABILITY(psp, PSP_SECURITY_REPORTING) &&
- psp->capability & (PSP_SECURITY_TSME_STATUS << PSP_CAPABILITY_PSP_SECURITY_OFFSET) &&
- cc_platform_has(CC_ATTR_HOST_MEM_ENCRYPT))
- dev_notice(psp->dev, "psp: Both TSME and SME are active, SME is unnecessary when TSME is active.\n");
+ psp->capability & (PSP_SECURITY_TSME_STATUS << PSP_CAPABILITY_PSP_SECURITY_OFFSET)) {
+ if (cc_platform_has(CC_ATTR_HOST_MEM_ENCRYPT))
+ dev_notice(psp->dev, "psp: Both TSME and SME are active, SME is unnecessary when TSME is active.\n");
+ else
+ dev_notice(psp->dev, "psp: TSME enabled\n");
+ }
return 0;
}