linux-kernel - [PATCH 1/3] crypto: ccp: Extend SNP_PLATFORM

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Message-ID: <be626a28eeecd08eac7f68fb23283c5ecf5e2c68.1723490152.git.ashish.kalra@amd.com>
Date: Mon, 12 Aug 2024 19:42:05 +0000
From: Ashish Kalra <Ashish.Kalra@....com>
To: <seanjc@...gle.com>, <pbonzini@...hat.com>, <tglx@...utronix.de>,
	<mingo@...hat.com>, <bp@...en8.de>, <dave.hansen@...ux.intel.com>,
	<hpa@...or.com>, <thomas.lendacky@....com>, <herbert@...dor.apana.org.au>
CC: <x86@...nel.org>, <john.allen@....com>, <davem@...emloft.net>,
	<michael.roth@....com>, <kvm@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-crypto@...r.kernel.org>
Subject: [PATCH 1/3] crypto: ccp: Extend SNP_PLATFORM_STATUS command

From: Ashish Kalra <ashish.kalra@....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@....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
+ * @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 */
-- 
2.34.1