From 28ca86d12286aad430378cbf416c966cdfddfbdf Mon Sep 17 00:00:00 2001
From: "Richard W.M. Jones" <rjones@redhat.com>
Date: Sat, 24 Jan 2015 15:40:05 +0000
Subject: [PATCH] aarch64: Increase default appliance memory size on aarch64.

Kernel 3.19 has problems uncompressing the RAM disk with <= 500 MB.
(This is likely to be a kernel bug)

64 KB pages are common on aarch64, so treat this case the same as ppc,
and use a larger default appliance memory size.

Thanks: Laszlo Ersek for help and reproducing the bug.
(cherry picked from commit c24f242521e882380c28d0952007d8462040d998)
---
 src/guestfs-internal.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/guestfs-internal.h b/src/guestfs-internal.h
index d5de345..d9ccf5f 100644
--- a/src/guestfs-internal.h
+++ b/src/guestfs-internal.h
@@ -68,6 +68,16 @@
 #  define MIN_MEMSIZE 256
 #endif
 
+/* Kernel 3.19 is unable to uncompress the initramfs on aarch64 unless
+ * we have > 500 MB of space.  This looks like a kernel bug (earlier
+ * kernels have no problems).  However since 64 KB pages are also
+ * common on aarch64, treat this like the ppc case above.
+ */
+#ifdef __aarch64__
+#  define DEFAULT_MEMSIZE 768
+#  define MIN_MEMSIZE 256
+#endif
+
 /* Valgrind has a fairly hefty memory overhead.  Using the defaults
  * caused the C API tests to fail.
  */
-- 
1.8.3.1