diff mbox series

[1/3] crypto: ccp: Extend SNP_PLATFORM_STATUS command

Message ID be626a28eeecd08eac7f68fb23283c5ecf5e2c68.1723490152.git.ashish.kalra@amd.com (mailing list archive)
State New, archived
Headers show
Series Add SEV-SNP CipherTextHiding feature support | expand

Commit Message

Kalra, Ashish Aug. 12, 2024, 7:42 p.m. UTC 
From: Ashish Kalra <ashish.kalra@amd.com>

Extend information returned about SNP platform's status and capabilities
such as SNP_FEATURE_INFO command availability, ciphertext hiding enabled
and ciphertext hiding capability.

Signed-off-by: Ashish Kalra <ashish.kalra@amd.com>
---
 include/uapi/linux/psp-sev.h | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

Comments

Tom Lendacky Aug. 14, 2024, 9:53 p.m. UTC | #1 
On 8/12/24 14:42, Ashish Kalra wrote:
> From: Ashish Kalra <ashish.kalra@amd.com>
> 
> Extend information returned about SNP platform's status and capabilities
> such as SNP_FEATURE_INFO command availability, ciphertext hiding enabled
> and ciphertext hiding capability.

Just saying something like:

Define new bit-field definitions returned by the SNP_PLATFORM_STATUS
command.

You're not actually extending the command or struct.

> 
> Signed-off-by: Ashish Kalra <ashish.kalra@amd.com>
> ---
>  include/uapi/linux/psp-sev.h | 10 +++++++++-
>  1 file changed, 9 insertions(+), 1 deletion(-)
> 
> diff --git a/include/uapi/linux/psp-sev.h b/include/uapi/linux/psp-sev.h
> index 2289b7c76c59..19a0a284b798 100644
> --- a/include/uapi/linux/psp-sev.h
> +++ b/include/uapi/linux/psp-sev.h
> @@ -177,6 +177,10 @@ struct sev_user_data_get_id2 {
>   * @mask_chip_id: whether chip id is present in attestation reports or not
>   * @mask_chip_key: whether attestation reports are signed or not
>   * @vlek_en: VLEK (Version Loaded Endorsement Key) hashstick is loaded
> + * @feature_info: whether SNP_FEATURE_INFO command is available
> + * @rapl_dis: whether RAPL is disabled
> + * @ciphertext_hiding_cap: whether platform has ciphertext hiding enabled

s/enabled/capability/

Thanks,
Tom

> + * @ciphertext_hiding_en: whether ciphertext hiding is enabled
>   * @rsvd1: reserved
>   * @guest_count: the number of guest currently managed by the firmware
>   * @current_tcb_version: current TCB version
> @@ -192,7 +196,11 @@ struct sev_user_data_snp_status {
>  	__u32 mask_chip_id:1;		/* Out */
>  	__u32 mask_chip_key:1;		/* Out */
>  	__u32 vlek_en:1;		/* Out */
> -	__u32 rsvd1:29;
> +	__u32 feature_info:1;		/* Out */
> +	__u32 rapl_dis:1;		/* Out */
> +	__u32 ciphertext_hiding_cap:1;	/* Out */
> +	__u32 ciphertext_hiding_en:1;	/* Out */
> +	__u32 rsvd1:25;
>  	__u32 guest_count;		/* Out */
>  	__u64 current_tcb_version;	/* Out */
>  	__u64 reported_tcb_version;	/* Out */
diff mbox series

Patch

diff --git a/include/uapi/linux/psp-sev.h b/include/uapi/linux/psp-sev.h
index 2289b7c76c59..19a0a284b798 100644
--- a/include/uapi/linux/psp-sev.h
+++ b/include/uapi/linux/psp-sev.h
@@ -177,6 +177,10 @@  struct sev_user_data_get_id2 {
  * @mask_chip_id: whether chip id is present in attestation reports or not
  * @mask_chip_key: whether attestation reports are signed or not
  * @vlek_en: VLEK (Version Loaded Endorsement Key) hashstick is loaded
+ * @feature_info: whether SNP_FEATURE_INFO command is available
+ * @rapl_dis: whether RAPL is disabled
+ * @ciphertext_hiding_cap: whether platform has ciphertext hiding enabled
+ * @ciphertext_hiding_en: whether ciphertext hiding is enabled
  * @rsvd1: reserved
  * @guest_count: the number of guest currently managed by the firmware
  * @current_tcb_version: current TCB version
@@ -192,7 +196,11 @@  struct sev_user_data_snp_status {
 	__u32 mask_chip_id:1;		/* Out */
 	__u32 mask_chip_key:1;		/* Out */
 	__u32 vlek_en:1;		/* Out */
-	__u32 rsvd1:29;
+	__u32 feature_info:1;		/* Out */
+	__u32 rapl_dis:1;		/* Out */
+	__u32 ciphertext_hiding_cap:1;	/* Out */
+	__u32 ciphertext_hiding_en:1;	/* Out */
+	__u32 rsvd1:25;
 	__u32 guest_count;		/* Out */
 	__u64 current_tcb_version;	/* Out */
 	__u64 reported_tcb_version;	/* Out */