From: Scott Wood <scottwood@freescale.com>
Date: Wed, 7 Oct 2015 03:48:17 +0000 (-0500)
Subject: powerpc/book3e-64: Don't limit paca to 256 MiB
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=ecc4999f68d157a25c500d18586a16f09a029cb4;p=deliverable%2Flinux.git

powerpc/book3e-64: Don't limit paca to 256 MiB

This limit only makes sense on book3s, and on book3e it can cause
problems with kdump if we don't have any memory under 256 MiB.

Signed-off-by: Scott Wood <scottwood@freescale.com>
---

diff --git a/arch/powerpc/kernel/paca.c b/arch/powerpc/kernel/paca.c
index 5a23b69f8129..01ea0edf0579 100644
--- a/arch/powerpc/kernel/paca.c
+++ b/arch/powerpc/kernel/paca.c
@@ -204,14 +204,19 @@ static int __initdata paca_size;
 
 void __init allocate_pacas(void)
 {
-	int cpu, limit;
+	u64 limit;
+	int cpu;
 
+	limit = ppc64_rma_size;
+
+#ifdef CONFIG_PPC_BOOK3S_64
 	/*
 	 * We can't take SLB misses on the paca, and we want to access them
 	 * in real mode, so allocate them within the RMA and also within
 	 * the first segment.
 	 */
-	limit = min(0x10000000ULL, ppc64_rma_size);
+	limit = min(0x10000000ULL, limit);
+#endif
 
 	paca_size = PAGE_ALIGN(sizeof(struct paca_struct) * nr_cpu_ids);