[PATCH V5 7/8] powerpc: Check arch.vec earlier during boot for memory features

[Michael Bringmann <mwb@linux.vnet.ibm.com>]

architecture.vec5 features: The boot-time memory management needs to
know the form of the "ibm,dynamic-memory-v2" property early during
scanning of the flattened device tree.  This patch moves execution of
the function pseries_probe_fw_features() early enough to be before
the scanning of the memory properties in the device tree to allow
recognition of the supported properties.

[V2: No change]
[V3: Updated after commit 3808a88985b4f5f5e947c364debce4441a380fb8.]
[V4: Update comments]
[V5: Resynchronize/resubmit]

Signed-off-by: Michael Bringmann <mwb@linux.vnet.ibm.com>
---
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 946e34f..2034edc 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -753,6 +753,9 @@ void __init early_init_devtree(void *params)
 	 */
 	of_scan_flat_dt(early_init_dt_scan_chosen_ppc, boot_command_line);
 
+	/* Now try to figure out if we are running on LPAR and so on */
+	pseries_probe_fw_features();
+
 	/* Scan memory nodes and rebuild MEMBLOCKs */
 	of_scan_flat_dt(early_init_dt_scan_root, NULL);
 	of_scan_flat_dt(early_init_dt_scan_memory_ppc, NULL);
@@ -823,9 +823,6 @@ void __init early_init_devtree(void *params)
 #endif
 	epapr_paravirt_early_init();
 
-	/* Now try to figure out if we are running on LPAR and so on */
-	pseries_probe_fw_features();
-
 #ifdef CONFIG_PPC_PS3
 	/* Identify PS3 firmware */
 	if (of_flat_dt_is_compatible(of_get_flat_dt_root(), "sony,ps3"))