diff --git a/arch/x86/include/asm/sev-common.h b/arch/x86/include/asm/sev-common.h
index 98726c2b04f8..655eb0ac5032 100644
--- a/arch/x86/include/asm/sev-common.h
+++ b/arch/x86/include/asm/sev-common.h
@@ -206,6 +206,7 @@ struct snp_psc_desc {
 #define GHCB_TERM_NO_SVSM		7	/* SVSM is not advertised in the secrets page */
 #define GHCB_TERM_SVSM_VMPL0		8	/* SVSM is present but has set VMPL to 0 */
 #define GHCB_TERM_SVSM_CAA		9	/* SVSM is present but CAA is not page aligned */
+#define GHCB_TERM_SECURE_TSC		10	/* Secure TSC initialization failed */
 
 #define GHCB_RESP_CODE(v)		((v) & GHCB_MSR_INFO_MASK)
 
diff --git a/arch/x86/include/asm/sev.h b/arch/x86/include/asm/sev.h
index eda435eba53e..f95fa64bf480 100644
--- a/arch/x86/include/asm/sev.h
+++ b/arch/x86/include/asm/sev.h
@@ -146,6 +146,9 @@ enum msg_type {
 	SNP_MSG_VMRK_REQ,
 	SNP_MSG_VMRK_RSP,
 
+	SNP_MSG_TSC_INFO_REQ = 17,
+	SNP_MSG_TSC_INFO_RSP,
+
 	SNP_MSG_TYPE_MAX
 };
 
@@ -174,6 +177,22 @@ struct snp_guest_msg {
 	u8 payload[PAGE_SIZE - sizeof(struct snp_guest_msg_hdr)];
 } __packed;
 
+#define SNP_TSC_INFO_REQ_SZ	128
+#define SNP_TSC_INFO_RESP_SZ	128
+
+struct snp_tsc_info_req {
+	u8 rsvd[SNP_TSC_INFO_REQ_SZ];
+} __packed;
+
+struct snp_tsc_info_resp {
+	u32 status;
+	u32 rsvd1;
+	u64 tsc_scale;
+	u64 tsc_offset;
+	u32 tsc_factor;
+	u8 rsvd2[100];
+} __packed;
+
 struct snp_guest_req {
 	void *req_buf;
 	size_t req_sz;
@@ -499,6 +518,27 @@ static inline void snp_msg_cleanup(struct snp_msg_desc *mdesc)
 int snp_send_guest_request(struct snp_msg_desc *mdesc, struct snp_guest_req *req,
 			   struct snp_guest_request_ioctl *rio);
 
+static inline int handle_guest_request(struct snp_msg_desc *mdesc, u64 exit_code,
+				       struct snp_guest_request_ioctl *rio, u8 type,
+				       void *req_buf, size_t req_sz, void *resp_buf,
+				       u32 resp_sz)
+{
+	struct snp_guest_req req = {
+		.msg_version	= rio->msg_version,
+		.msg_type	= type,
+		.vmpck_id	= mdesc->vmpck_id,
+		.req_buf	= req_buf,
+		.req_sz		= req_sz,
+		.resp_buf	= resp_buf,
+		.resp_sz	= resp_sz,
+		.exit_code	= exit_code,
+	};
+
+	return snp_send_guest_request(mdesc, &req, rio);
+}
+
+void __init snp_secure_tsc_prepare(void);
+
 #else	/* !CONFIG_AMD_MEM_ENCRYPT */
 
 #define snp_vmpl 0
@@ -545,6 +585,12 @@ static inline struct snp_msg_desc *snp_msg_alloc(void) { return NULL; }
 static inline void snp_msg_cleanup(struct snp_msg_desc *mdesc) { }
 static inline int snp_send_guest_request(struct snp_msg_desc *mdesc, struct snp_guest_req *req,
 					 struct snp_guest_request_ioctl *rio) { return -ENODEV; }
+static inline int handle_guest_request(struct snp_msg_desc *mdesc, u64 exit_code,
+				       struct snp_guest_request_ioctl *rio, u8 type,
+				       void *req_buf, size_t req_sz, void *resp_buf,
+				       u32 resp_sz) { return -ENODEV; }
+
+static inline void __init snp_secure_tsc_prepare(void) { }
 
 #endif	/* CONFIG_AMD_MEM_ENCRYPT */
 
diff --git a/arch/x86/include/asm/svm.h b/arch/x86/include/asm/svm.h
index f0dea3750ca9..1695a933106b 100644
--- a/arch/x86/include/asm/svm.h
+++ b/arch/x86/include/asm/svm.h
@@ -417,7 +417,9 @@ struct sev_es_save_area {
 	u8 reserved_0x298[80];
 	u32 pkru;
 	u32 tsc_aux;
-	u8 reserved_0x2f0[24];
+	u64 tsc_scale;
+	u64 tsc_offset;
+	u8 reserved_0x300[8];
 	u64 rcx;
 	u64 rdx;
 	u64 rbx;
@@ -549,7 +551,7 @@ static inline void __unused_size_checks(void)
 	BUILD_BUG_RESERVED_OFFSET(sev_es_save_area, 0x1c0);
 	BUILD_BUG_RESERVED_OFFSET(sev_es_save_area, 0x248);
 	BUILD_BUG_RESERVED_OFFSET(sev_es_save_area, 0x298);
-	BUILD_BUG_RESERVED_OFFSET(sev_es_save_area, 0x2f0);
+	BUILD_BUG_RESERVED_OFFSET(sev_es_save_area, 0x300);
 	BUILD_BUG_RESERVED_OFFSET(sev_es_save_area, 0x320);
 	BUILD_BUG_RESERVED_OFFSET(sev_es_save_area, 0x380);
 	BUILD_BUG_RESERVED_OFFSET(sev_es_save_area, 0x3f0);
diff --git a/arch/x86/coco/sev/core.c b/arch/x86/coco/sev/core.c
index aaeeca938265..9815aa419978 100644
--- a/arch/x86/coco/sev/core.c
+++ b/arch/x86/coco/sev/core.c
@@ -98,6 +98,10 @@ static u64 secrets_pa __ro_after_init;
 
 static struct snp_msg_desc *snp_mdesc;
 
+/* Secure TSC values read using TSC_INFO SNP Guest request */
+static u64 snp_tsc_scale __ro_after_init;
+static u64 snp_tsc_offset __ro_after_init;
+
 /* #VC handler runtime per-CPU data */
 struct sev_es_runtime_data {
 	struct ghcb ghcb_page;
@@ -1175,6 +1179,12 @@ static int wakeup_cpu_via_vmgexit(u32 apic_id, unsigned long start_ip)
 	vmsa->vmpl		= snp_vmpl;
 	vmsa->sev_features	= sev_status >> 2;
 
+	/* Set Secure TSC parameters */
+	if (cc_platform_has(CC_ATTR_GUEST_SECURE_TSC)) {
+		vmsa->tsc_scale = snp_tsc_scale;
+		vmsa->tsc_offset = snp_tsc_offset;
+	}
+
 	/* Switch the page over to a VMSA page now that it is initialized */
 	ret = snp_set_vmsa(vmsa, caa, apic_id, true);
 	if (ret) {
@@ -2981,3 +2991,84 @@ int snp_send_guest_request(struct snp_msg_desc *mdesc, struct snp_guest_req *req
 	return 0;
 }
 EXPORT_SYMBOL_GPL(snp_send_guest_request);
+
+static int __init snp_get_tsc_info(void)
+{
+	static u8 buf[SNP_TSC_INFO_RESP_SZ + AUTHTAG_LEN];
+	struct snp_guest_request_ioctl rio;
+	struct snp_tsc_info_resp tsc_resp;
+	struct snp_tsc_info_req *tsc_req;
+	struct snp_msg_desc *mdesc;
+	struct snp_guest_req req;
+	int rc;
+
+	/*
+	 * The intermediate response buffer is used while decrypting the
+	 * response payload. Make sure that it has enough space to cover the
+	 * authtag.
+	 */
+	BUILD_BUG_ON(sizeof(buf) < (sizeof(tsc_resp) + AUTHTAG_LEN));
+
+	mdesc = snp_msg_alloc();
+	if (IS_ERR_OR_NULL(mdesc))
+		return -ENOMEM;
+
+	rc = snp_msg_init(mdesc, snp_vmpl);
+	if (rc)
+		return rc;
+
+	tsc_req = kzalloc(sizeof(struct snp_tsc_info_req), GFP_KERNEL);
+	if (!tsc_req)
+		return -ENOMEM;
+
+	memset(&req, 0, sizeof(req));
+	memset(&rio, 0, sizeof(rio));
+	memset(buf, 0, sizeof(buf));
+
+	req.msg_version = MSG_HDR_VER;
+	req.msg_type = SNP_MSG_TSC_INFO_REQ;
+	req.vmpck_id = snp_vmpl;
+	req.req_buf = tsc_req;
+	req.req_sz = sizeof(*tsc_req);
+	req.resp_buf = buf;
+	req.resp_sz = sizeof(tsc_resp) + AUTHTAG_LEN;
+	req.exit_code = SVM_VMGEXIT_GUEST_REQUEST;
+
+	rc = snp_send_guest_request(mdesc, &req, &rio);
+	if (rc)
+		goto err_req;
+
+	memcpy(&tsc_resp, buf, sizeof(tsc_resp));
+	pr_debug("%s: response status %x scale %llx offset %llx factor %x\n",
+		 __func__, tsc_resp.status, tsc_resp.tsc_scale, tsc_resp.tsc_offset,
+		 tsc_resp.tsc_factor);
+
+	if (tsc_resp.status == 0) {
+		snp_tsc_scale = tsc_resp.tsc_scale;
+		snp_tsc_offset = tsc_resp.tsc_offset;
+	} else {
+		pr_err("Failed to get TSC info, response status %x\n", tsc_resp.status);
+		rc = -EIO;
+	}
+
+err_req:
+	/* The response buffer contains the sensitive data, explicitly clear it. */
+	memzero_explicit(buf, sizeof(buf));
+	memzero_explicit(&tsc_resp, sizeof(tsc_resp));
+	memzero_explicit(&req, sizeof(req));
+
+	return rc;
+}
+
+void __init snp_secure_tsc_prepare(void)
+{
+	if (!cc_platform_has(CC_ATTR_GUEST_SECURE_TSC))
+		return;
+
+	if (snp_get_tsc_info()) {
+		pr_alert("Unable to retrieve Secure TSC info from ASP\n");
+		sev_es_terminate(SEV_TERM_SET_LINUX, GHCB_TERM_SECURE_TSC);
+	}
+
+	pr_debug("SecureTSC enabled");
+}
diff --git a/arch/x86/mm/mem_encrypt.c b/arch/x86/mm/mem_encrypt.c
index 0a120d85d7bb..996ca27f0b72 100644
--- a/arch/x86/mm/mem_encrypt.c
+++ b/arch/x86/mm/mem_encrypt.c
@@ -94,6 +94,10 @@ void __init mem_encrypt_init(void)
 	/* Call into SWIOTLB to update the SWIOTLB DMA buffers */
 	swiotlb_update_mem_attributes();
 
+	/* Initialize SNP Secure TSC */
+	if (cc_platform_has(CC_ATTR_GUEST_SEV_SNP))
+		snp_secure_tsc_prepare();
+
 	print_mem_encrypt_feature_info();
 }
 
diff --git a/drivers/virt/coco/sev-guest/sev-guest.c b/drivers/virt/coco/sev-guest/sev-guest.c
index 019eca753f85..db1b00db624d 100644
--- a/drivers/virt/coco/sev-guest/sev-guest.c
+++ b/drivers/virt/coco/sev-guest/sev-guest.c
@@ -64,25 +64,6 @@ static inline struct snp_guest_dev *to_snp_dev(struct file *file)
 	return container_of(dev, struct snp_guest_dev, misc);
 }
 
-static int handle_guest_request(struct snp_msg_desc *mdesc, u64 exit_code,
-				struct snp_guest_request_ioctl *rio, u8 type,
-				void *req_buf, size_t req_sz, void *resp_buf,
-				u32 resp_sz)
-{
-	struct snp_guest_req req = {
-		.msg_version	= rio->msg_version,
-		.msg_type	= type,
-		.vmpck_id	= mdesc->vmpck_id,
-		.req_buf	= req_buf,
-		.req_sz		= req_sz,
-		.resp_buf	= resp_buf,
-		.resp_sz	= resp_sz,
-		.exit_code	= exit_code,
-	};
-
-	return snp_send_guest_request(mdesc, &req, rio);
-}
-
 struct snp_req_resp {
 	sockptr_t req_data;
 	sockptr_t resp_data;
