1. Patchew
  2. linux
  3. [PATCH v3 0/7] Move initializing SEV/SNP functionality to KVM
  4. View patch

[PATCH v3 1/7] crypto: ccp: Move dev_info/err messages for SEV/SNP initialization

Ashish Kalra posted 7 patches 1 year, 1 month ago
There is a newer version of this series
[PATCH v3 1/7] crypto: ccp: Move dev_info/err messages for SEV/SNP initialization
Posted by Ashish Kalra 1 year, 1 month ago 
From: Ashish Kalra <ashish.kalra@amd.com>

Remove dev_info and dev_err messages related to SEV/SNP initialization
from callers and instead move those inside __sev_platform_init_locked()
and __sev_snp_init_locked().

This allows both _sev_platform_init_locked() and various SEV/SNP ioctls
to call __sev_platform_init_locked() and __sev_snp_init_locked() for
implicit SEV/SNP initialization and shutdown without additionally
printing any errors/success messages.

Signed-off-by: Ashish Kalra <ashish.kalra@amd.com>
---
 drivers/crypto/ccp/sev-dev.c | 23 ++++++++++++++++++-----
 1 file changed, 18 insertions(+), 5 deletions(-)

diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c
index af018afd9cd7..1c1c33d3ed9a 100644
--- a/drivers/crypto/ccp/sev-dev.c
+++ b/drivers/crypto/ccp/sev-dev.c
@@ -1177,19 +1177,27 @@ static int __sev_snp_init_locked(int *error)
 
 	rc = __sev_do_cmd_locked(cmd, arg, error);
 	if (rc)
-		return rc;
+		goto err;
 
 	/* Prepare for first SNP guest launch after INIT. */
 	wbinvd_on_all_cpus();
 	rc = __sev_do_cmd_locked(SEV_CMD_SNP_DF_FLUSH, NULL, error);
 	if (rc)
-		return rc;
+		goto err;
 
 	sev->snp_initialized = true;
 	dev_dbg(sev->dev, "SEV-SNP firmware initialized\n");
 
+	dev_info(sev->dev, "SEV-SNP API:%d.%d build:%d\n", sev->api_major,
+		 sev->api_minor, sev->build);
+
 	sev_es_tmr_size = SNP_TMR_SIZE;
 
+	return 0;
+
+err:
+	dev_err(sev->dev, "SEV-SNP: failed to INIT rc %d, error %#x\n",
+		rc, *error);
 	return rc;
 }
 
@@ -1268,7 +1276,7 @@ static int __sev_platform_init_locked(int *error)
 
 	rc = __sev_platform_init_handle_init_ex_path(sev);
 	if (rc)
-		return rc;
+		goto err;
 
 	rc = __sev_do_init_locked(&psp_ret);
 	if (rc && psp_ret == SEV_RET_SECURE_DATA_INVALID) {
@@ -1288,7 +1296,7 @@ static int __sev_platform_init_locked(int *error)
 		*error = psp_ret;
 
 	if (rc)
-		return rc;
+		goto err;
 
 	sev->state = SEV_STATE_INIT;
 
@@ -1296,7 +1304,7 @@ static int __sev_platform_init_locked(int *error)
 	wbinvd_on_all_cpus();
 	rc = __sev_do_cmd_locked(SEV_CMD_DF_FLUSH, NULL, error);
 	if (rc)
-		return rc;
+		goto err;
 
 	dev_dbg(sev->dev, "SEV firmware initialized\n");
 
@@ -1304,6 +1312,11 @@ static int __sev_platform_init_locked(int *error)
 		 sev->api_minor, sev->build);
 
 	return 0;
+
+err:
+	dev_err(sev->dev, "SEV: failed to INIT error %#x, rc %d\n",
+		psp_ret, rc);
+	return rc;
 }
 
 static int _sev_platform_init_locked(struct sev_platform_init_args *args)
-- 
2.34.1
Re: [PATCH v3 1/7] crypto: ccp: Move dev_info/err messages for SEV/SNP initialization
Posted by Tom Lendacky 1 year, 1 month ago 
On 1/3/25 13:59, Ashish Kalra wrote:
> From: Ashish Kalra <ashish.kalra@amd.com>
> 
> Remove dev_info and dev_err messages related to SEV/SNP initialization
> from callers and instead move those inside __sev_platform_init_locked()
> and __sev_snp_init_locked().
> 
> This allows both _sev_platform_init_locked() and various SEV/SNP ioctls
> to call __sev_platform_init_locked() and __sev_snp_init_locked() for
> implicit SEV/SNP initialization and shutdown without additionally
> printing any errors/success messages.

This doesn't take into account Alexey's comment about which command
failed. I agree with him and you shouldn't use a common exit point.

Thanks,
Tom

> 
> Signed-off-by: Ashish Kalra <ashish.kalra@amd.com>
> ---
>  drivers/crypto/ccp/sev-dev.c | 23 ++++++++++++++++++-----
>  1 file changed, 18 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c
> index af018afd9cd7..1c1c33d3ed9a 100644
> --- a/drivers/crypto/ccp/sev-dev.c
> +++ b/drivers/crypto/ccp/sev-dev.c
> @@ -1177,19 +1177,27 @@ static int __sev_snp_init_locked(int *error)
>  
>  	rc = __sev_do_cmd_locked(cmd, arg, error);
>  	if (rc)
> -		return rc;
> +		goto err;
>  
>  	/* Prepare for first SNP guest launch after INIT. */
>  	wbinvd_on_all_cpus();
>  	rc = __sev_do_cmd_locked(SEV_CMD_SNP_DF_FLUSH, NULL, error);
>  	if (rc)
> -		return rc;
> +		goto err;
>  
>  	sev->snp_initialized = true;
>  	dev_dbg(sev->dev, "SEV-SNP firmware initialized\n");
>  
> +	dev_info(sev->dev, "SEV-SNP API:%d.%d build:%d\n", sev->api_major,
> +		 sev->api_minor, sev->build);
> +
>  	sev_es_tmr_size = SNP_TMR_SIZE;
>  
> +	return 0;
> +
> +err:
> +	dev_err(sev->dev, "SEV-SNP: failed to INIT rc %d, error %#x\n",
> +		rc, *error);
>  	return rc;
>  }
>  
> @@ -1268,7 +1276,7 @@ static int __sev_platform_init_locked(int *error)
>  
>  	rc = __sev_platform_init_handle_init_ex_path(sev);
>  	if (rc)
> -		return rc;
> +		goto err;
>  
>  	rc = __sev_do_init_locked(&psp_ret);
>  	if (rc && psp_ret == SEV_RET_SECURE_DATA_INVALID) {
> @@ -1288,7 +1296,7 @@ static int __sev_platform_init_locked(int *error)
>  		*error = psp_ret;
>  
>  	if (rc)
> -		return rc;
> +		goto err;
>  
>  	sev->state = SEV_STATE_INIT;
>  
> @@ -1296,7 +1304,7 @@ static int __sev_platform_init_locked(int *error)
>  	wbinvd_on_all_cpus();
>  	rc = __sev_do_cmd_locked(SEV_CMD_DF_FLUSH, NULL, error);
>  	if (rc)
> -		return rc;
> +		goto err;
>  
>  	dev_dbg(sev->dev, "SEV firmware initialized\n");
>  
> @@ -1304,6 +1312,11 @@ static int __sev_platform_init_locked(int *error)
>  		 sev->api_minor, sev->build);
>  
>  	return 0;
> +
> +err:
> +	dev_err(sev->dev, "SEV: failed to INIT error %#x, rc %d\n",
> +		psp_ret, rc);
> +	return rc;
>  }
>  
>  static int _sev_platform_init_locked(struct sev_platform_init_args *args)
Re: [PATCH v3 1/7] crypto: ccp: Move dev_info/err messages for SEV/SNP initialization
Posted by Dionna Amalie Glaze 1 year, 1 month ago 
On Fri, Jan 3, 2025 at 11:59 AM Ashish Kalra <Ashish.Kalra@amd.com> wrote:
>
> From: Ashish Kalra <ashish.kalra@amd.com>
>
> Remove dev_info and dev_err messages related to SEV/SNP initialization

I don't see any "remove" code in this patch.



-- 
-Dionna Glaze, PhD, CISSP, CCSP (she/her)
Re: [PATCH v3 1/7] crypto: ccp: Move dev_info/err messages for SEV/SNP initialization
Posted by Kalra, Ashish 1 year, 1 month ago 
On 1/6/2025 11:17 AM, Dionna Amalie Glaze wrote:
> On Fri, Jan 3, 2025 at 11:59 AM Ashish Kalra <Ashish.Kalra@amd.com> wrote:
>>
>> From: Ashish Kalra <ashish.kalra@amd.com>
>>
>> Remove dev_info and dev_err messages related to SEV/SNP initialization
> 
> I don't see any "remove" code in this patch.
> 
> 

Actually, the removal code is in the final patch after the platform initialization
stuff has been moved to KVM, and this is more of a pre-patch to move dev_info/dev_err
messages related to SEV/SNP initialization inside __sev_platform_init_locked()
and __sev_snp_init_locked(), so i will drop the remove" from commit message and 
keep only the move description as part of the commit message.

Thanks,
Ashish

Patchew 2.1-devel-b67e4c2

© 2016 - 2026 Red Hat, Inc.