Merge tag 'smccc-updates-6.17' of https://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into soc/drivers

firmware: smccc: Update for v6.17

Just a single update extending arm_smccc_hypervisor_has_uuid() to
support both SMC and HVC conduits, enabling UUID retrieval when Linux
runs as the root partition under Microsoft Hypervisor (MSHV), where
SMC is used. It leverages arm_smccc_1_1_invoke() to dynamically select
the appropriate conduit, enhancing compatibility beyond just HVC.

* tag 'smccc-updates-6.17' of https://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  firmware: smccc: Support both smc and hvc conduits for getting hyp UUID

Link: https://lore.kernel.org/r/20250709122615.1171419-1-sudeep.holla@arm.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Author: arndb

drivers/firmware/smccc/smccc.c

@@ -72,10 +72,7 @@ bool arm_smccc_hypervisor_has_uuid(const uuid_t *hyp_uuid)
 	struct arm_smccc_res res = {};
 	uuid_t uuid;
 
-	if (arm_smccc_1_1_get_conduit() != SMCCC_CONDUIT_HVC)
-		return false;
-
-	arm_smccc_1_1_hvc(ARM_SMCCC_VENDOR_HYP_CALL_UID_FUNC_ID, &res);
+	arm_smccc_1_1_invoke(ARM_SMCCC_VENDOR_HYP_CALL_UID_FUNC_ID, &res);
 	if (res.a0 == SMCCC_RET_NOT_SUPPORTED)
 		return false;