53 lines
2.1 KiB
Diff
53 lines
2.1 KiB
Diff
|
From patchwork Thu Mar 30 04:03:49 2017
|
||
|
|
Content-Type: text/plain; charset="utf-8"
|
||
|
|
MIME-Version: 1.0
|
||
|
|
Content-Transfer-Encoding: 7bit
|
||
|
|
Subject: powerpc/prom: Increase RMA size to 512MB
|
||
|
|
From: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
|
||
|
|
X-Patchwork-Id: 745044
|
||
|
|
Message-Id: <20170330040349.GA31756@us.ibm.com>
|
||
|
|
To: Michael Ellerman <mpe@ellerman.id.au>
|
||
|
|
Cc: praveen.pandey@in.ibm.com, linuxppc-dev@lists.ozlabs.org,
|
||
|
|
linux-kernel@vger.kernel.org
|
||
|
|
Date: Wed, 29 Mar 2017 21:03:49 -0700
|
||
|
|
|
||
|
|
>From 3ae8d1ed31b01b92b172fe20e4560cfbfab135ec Mon Sep 17 00:00:00 2001
|
||
|
|
From: root <root@furatripa-lp2.aus.stglabs.ibm.com>
|
||
|
|
Date: Mon, 27 Mar 2017 19:43:14 -0400
|
||
|
|
Subject: [PATCH] powerpc/prom: Increase RMA size to 512MB
|
||
|
|
|
||
|
|
When booting very large systems with a large initrd, we run out of
|
||
|
|
space for either the RTAS or the flattened device tree (FDT). Boot
|
||
|
|
fails with messages like:
|
||
|
|
|
||
|
|
Could not allocate memory for RTAS
|
||
|
|
or
|
||
|
|
No memory for flatten_device_tree (no room)
|
||
|
|
|
||
|
|
Increasing the minimum RMA size to 512MB fixes the problem. This
|
||
|
|
should not have an impact on smaller LPARs (with 256MB memory),
|
||
|
|
as the firmware will cap the RMA to the memory assigned to the LPAR.
|
||
|
|
|
||
|
|
Fix is based on input/discussions with Michael Ellerman. Thanks to
|
||
|
|
Praveen K. Pandey for testing on a large system.
|
||
|
|
|
||
|
|
Reported-by: Praveen K. Pandey <preveen.pandey@in.ibm.com>
|
||
|
|
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
|
||
|
|
---
|
||
|
|
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 1c1b44e..dd8a04f 100644
|
||
|
|
--- a/arch/powerpc/kernel/prom_init.c
|
||
|
|
+++ b/arch/powerpc/kernel/prom_init.c
|
||
|
|
@@ -815,7 +815,7 @@ struct ibm_arch_vec __cacheline_aligned ibm_architecture_vec = {
|
||
|
|
.virt_base = cpu_to_be32(0xffffffff),
|
||
|
|
.virt_size = cpu_to_be32(0xffffffff),
|
||
|
|
.load_base = cpu_to_be32(0xffffffff),
|
||
|
|
- .min_rma = cpu_to_be32(256), /* 256MB min RMA */
|
||
|
|
+ .min_rma = cpu_to_be32(512), /* 512MB min RMA */
|
||
|
|
.min_load = cpu_to_be32(0xffffffff), /* full client load */
|
||
|
|
.min_rma_percent = 0, /* min RMA percentage of total RAM */
|
||
|
|
.max_pft_size = 48, /* max log_2(hash table size) */
|