From 0929294dd8c32c009276ac960b532b7cd53e700c Mon Sep 17 00:00:00 2001 From: Sukadev Bhattiprolu Date: Wed, 17 Aug 2016 22:41:49 -0400 Subject: [PATCH 1/1] powerpc/pseries: Increase RMA size to 512MB. When trying to boot large kernel and initrd images on large systems (with hundreds of CPUs and Terabytes of memory), we sometimes run out of memory for the flattened device tree (FDT). Increase the memory allocated for the Real Mode Area (RMA) to 512MB to allow more room for the FDT. Signed-off-by: Sukadev Bhattiprolu --- arch/powerpc/kernel/prom_init.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c index 4e74fc5..6c59bf9 100644 --- a/arch/powerpc/kernel/prom_init.c +++ b/arch/powerpc/kernel/prom_init.c @@ -679,7 +679,7 @@ unsigned char ibm_architecture_vec[] = { W(0xffffffff), /* virt_base */ W(0xffffffff), /* virt_size */ W(0xffffffff), /* load_base */ - W(256), /* 256MB min RMA */ + W(512), /* 512MB min RMA */ W(0xffffffff), /* full client load */ 0, /* min RMA percentage of total RAM */ 48, /* max log_2(hash table size) */ -- 1.8.3.1