Re: [PATCH V6 7/8] powerpc: Check arch.vec earlier during boot for memory features
From: Nathan Fontenot <hidden>
Date: 2016-10-24 19:58:53
On 09/21/2016 09:17 AM, Michael Bringmann wrote:
quoted hunk ↗ jump to hunk
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] Signed-off-by: Michael Bringmann <redacted> ---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(); +
I'll have to defer to others on whether calling this earlier in boot is ok. I do notice that you do not remove the call later on, any reason? -Nathan
/* 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);