Fix for powerpc booting with large initrd (rhbz 1435154)

kernel.spec

@@ -602,6 +602,9 @@ Patch509: MODSIGN-Don-t-try-secure-boot-if-EFI-runtime-is-disa.patch
 #CVE-2016-3134 rhbz 1317383 1317384
 Patch665: netfilter-x_tables-deal-with-bogus-nextoffset-values.patch
 
+#rhbz 1435154
+Patch666: powerpc-prom-Increase-RMA-size-to-512MB.patch
+
 # END OF PATCH DEFINITIONS
 
 %endif
@@ -2166,6 +2169,9 @@ fi
 #
 #
 %changelog
+* Thu Apr 06 2017 Laura Abbott <labbott@fedoraproject.org>
+- Fix for powerpc booting with large initrd (rhbz 1435154)
+
 * Thu Apr  6 2017 Peter Robinson <pbrobinson@fedoraproject.org>
 - Rebase to new HummingBoard 2 DT patch
 - Minor ARM cleanups

powerpc-prom-Increase-RMA-size-to-512MB.patch

@@ -0,0 +1,52 @@
+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) */