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[Part2,v6,13/38] crypto: ccp: Add Secure Encrypted Virtualization (SEV) command support

Message ID 20171023073429.GA10952@nazgul.tnic (mailing list archive)
State Not Applicable
Delegated to: Herbert Xu
Headers show

Commit Message

Borislav Petkov Oct. 23, 2017, 7:34 a.m. UTC 
On Thu, Oct 19, 2017 at 09:33:48PM -0500, Brijesh Singh wrote:
> AMD's new Secure Encrypted Virtualization (SEV) feature allows the
> memory contents of virtual machines to be transparently encrypted with a
> key unique to the VM. The programming and management of the encryption
> keys are handled by the AMD Secure Processor (AMD-SP) which exposes the
> commands for these tasks. The complete spec is available at:
> 
> http://support.amd.com/TechDocs/55766_SEV-KM%20API_Specification.pdf
> 
> Extend the AMD-SP driver to provide the following support:
> 
>  - an in-kernel API to communicate with the SEV firmware. The API can be
>    used by the hypervisor to create encryption context for a SEV guest.
> 
>  - a userspace IOCTL to manage the platform certificates.

Just minor cleanups:

---

Comments

Brijesh Singh Oct. 23, 2017, 8:05 p.m. UTC | #1 
On 10/23/2017 02:34 AM, Borislav Petkov wrote:
...

> 
> Just minor cleanups:
> 

Thanks Boris, I have applied your cleanups.

-Brijesh

> ---
> diff --git a/drivers/crypto/ccp/psp-dev.c b/drivers/crypto/ccp/psp-dev.c
> index e9966d5fc6c4..f9a9a6e6ab99 100644
> --- a/drivers/crypto/ccp/psp-dev.c
> +++ b/drivers/crypto/ccp/psp-dev.c
> @@ -31,7 +31,7 @@
>   static DEFINE_MUTEX(sev_cmd_mutex);
>   static DEFINE_MUTEX(fw_init_mutex);
>   
> -static struct sev_misc_dev *sev_misc_dev;
> +static struct sev_misc_dev *misc_dev;
>   static int fw_init_count;
>   
>   static struct psp_device *psp_alloc_struct(struct sp_device *sp)
> @@ -299,14 +299,14 @@ static int sev_ops_init(struct psp_device *psp)
>   	 * sev_do_cmd() finds the right master device to which to issue the
>   	 * command to the firmware.
>   	 */
> -	if (!sev_misc_dev) {
> +	if (!misc_dev) {
>   		struct miscdevice *misc;
>   
> -		sev_misc_dev = devm_kzalloc(dev, sizeof(*sev_misc_dev), GFP_KERNEL);
> -		if (!sev_misc_dev)
> +		misc_dev = devm_kzalloc(dev, sizeof(*misc_dev), GFP_KERNEL);
> +		if (!misc_dev)
>   			return -ENOMEM;
>   
> -		misc = &sev_misc_dev->misc;
> +		misc = &misc_dev->misc;
>   		misc->minor = MISC_DYNAMIC_MINOR;
>   		misc->name = DEVICE_NAME;
>   		misc->fops = &sev_fops;
> @@ -315,13 +315,13 @@ static int sev_ops_init(struct psp_device *psp)
>   		if (ret)
>   			return ret;
>   
> -		kref_init(&sev_misc_dev->refcount);
> +		kref_init(&misc_dev->refcount);
>   	} else {
> -		kref_get(&sev_misc_dev->refcount);
> +		kref_get(&misc_dev->refcount);
>   	}
>   
>   	init_waitqueue_head(&psp->sev_int_queue);
> -	psp->sev_misc = sev_misc_dev;
> +	psp->sev_misc = misc_dev;
>   	dev_info(dev, "registered SEV device\n");
>   
>   	return 0;
> @@ -340,9 +340,9 @@ static int sev_init(struct psp_device *psp)
>   
>   static void sev_exit(struct kref *ref)
>   {
> -	struct sev_misc_dev *sev_dev = container_of(ref, struct sev_misc_dev, refcount);
> +	struct sev_misc_dev *misc_dev = container_of(ref, struct sev_misc_dev, refcount);
>   
> -	misc_deregister(&sev_dev->misc);
> +	misc_deregister(&misc_dev->misc);
>   }
>   
>   int psp_dev_init(struct sp_device *sp)
> @@ -405,7 +405,7 @@ void psp_dev_destroy(struct sp_device *sp)
>   	struct psp_device *psp = sp->psp_data;
>   
>   	if (psp->sev_misc)
> -		kref_put(&sev_misc_dev->refcount, sev_exit);
> +		kref_put(&misc_dev->refcount, sev_exit);
>   
>   	sp_free_psp_irq(sp, psp);
>   }
> diff --git a/include/linux/psp-sev.h b/include/linux/psp-sev.h
> index 21511419bfe6..eac850a97610 100644
> --- a/include/linux/psp-sev.h
> +++ b/include/linux/psp-sev.h
> @@ -525,7 +525,7 @@ int sev_platform_shutdown(int *error);
>   /**
>    * sev_platform_status - perform SEV PLATFORM_STATUS command
>    *
> - * @init: sev_data_status structure to be processed
> + * @status: sev_user_data_status structure to be processed
>    * @error: SEV command return code
>    *
>    * Returns:
>
diff mbox

Patch

diff --git a/drivers/crypto/ccp/psp-dev.c b/drivers/crypto/ccp/psp-dev.c
index e9966d5fc6c4..f9a9a6e6ab99 100644
--- a/drivers/crypto/ccp/psp-dev.c
+++ b/drivers/crypto/ccp/psp-dev.c
@@ -31,7 +31,7 @@ 
 static DEFINE_MUTEX(sev_cmd_mutex);
 static DEFINE_MUTEX(fw_init_mutex);
 
-static struct sev_misc_dev *sev_misc_dev;
+static struct sev_misc_dev *misc_dev;
 static int fw_init_count;
 
 static struct psp_device *psp_alloc_struct(struct sp_device *sp)
@@ -299,14 +299,14 @@  static int sev_ops_init(struct psp_device *psp)
 	 * sev_do_cmd() finds the right master device to which to issue the
 	 * command to the firmware.
 	 */
-	if (!sev_misc_dev) {
+	if (!misc_dev) {
 		struct miscdevice *misc;
 
-		sev_misc_dev = devm_kzalloc(dev, sizeof(*sev_misc_dev), GFP_KERNEL);
-		if (!sev_misc_dev)
+		misc_dev = devm_kzalloc(dev, sizeof(*misc_dev), GFP_KERNEL);
+		if (!misc_dev)
 			return -ENOMEM;
 
-		misc = &sev_misc_dev->misc;
+		misc = &misc_dev->misc;
 		misc->minor = MISC_DYNAMIC_MINOR;
 		misc->name = DEVICE_NAME;
 		misc->fops = &sev_fops;
@@ -315,13 +315,13 @@  static int sev_ops_init(struct psp_device *psp)
 		if (ret)
 			return ret;
 
-		kref_init(&sev_misc_dev->refcount);
+		kref_init(&misc_dev->refcount);
 	} else {
-		kref_get(&sev_misc_dev->refcount);
+		kref_get(&misc_dev->refcount);
 	}
 
 	init_waitqueue_head(&psp->sev_int_queue);
-	psp->sev_misc = sev_misc_dev;
+	psp->sev_misc = misc_dev;
 	dev_info(dev, "registered SEV device\n");
 
 	return 0;
@@ -340,9 +340,9 @@  static int sev_init(struct psp_device *psp)
 
 static void sev_exit(struct kref *ref)
 {
-	struct sev_misc_dev *sev_dev = container_of(ref, struct sev_misc_dev, refcount);
+	struct sev_misc_dev *misc_dev = container_of(ref, struct sev_misc_dev, refcount);
 
-	misc_deregister(&sev_dev->misc);
+	misc_deregister(&misc_dev->misc);
 }
 
 int psp_dev_init(struct sp_device *sp)
@@ -405,7 +405,7 @@  void psp_dev_destroy(struct sp_device *sp)
 	struct psp_device *psp = sp->psp_data;
 
 	if (psp->sev_misc)
-		kref_put(&sev_misc_dev->refcount, sev_exit);
+		kref_put(&misc_dev->refcount, sev_exit);
 
 	sp_free_psp_irq(sp, psp);
 }
diff --git a/include/linux/psp-sev.h b/include/linux/psp-sev.h
index 21511419bfe6..eac850a97610 100644
--- a/include/linux/psp-sev.h
+++ b/include/linux/psp-sev.h
@@ -525,7 +525,7 @@  int sev_platform_shutdown(int *error);
 /**
  * sev_platform_status - perform SEV PLATFORM_STATUS command
  *
- * @init: sev_data_status structure to be processed
+ * @status: sev_user_data_status structure to be processed
  * @error: SEV command return code
  *
  * Returns: