Resend: [PATCH V7 7/8] powerpc: Check arch.vec earlier during boot for memory features
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Message ID
State Superseded
Headers show

Commit Message

Michael Bringmann Sept. 21, 2016, 10:07 p.m. UTC
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]
[V6: Resync to v4.7 kernel code]
[V7: Correct mail threading]

Signed-off-by: Michael Bringmann <>

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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);