[RFC PATCH 12/17] powerpc/book3e-64: Don't limit paca to 256 MiB

Scott Wood scottwood at freescale.com
Sun Jul 19 06:08:49 AEST 2015


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 at freescale.com>
---
 arch/powerpc/kernel/paca.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/kernel/paca.c b/arch/powerpc/kernel/paca.c
index 5a23b69..7fdff63 100644
--- a/arch/powerpc/kernel/paca.c
+++ b/arch/powerpc/kernel/paca.c
@@ -206,12 +206,16 @@ void __init allocate_pacas(void)
 {
 	int cpu, limit;
 
+	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);
 
-- 
2.1.4



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