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From: Geert Uytterhoeven <geert+renesas@glider.be>
To: Peter Crosthwaite <crosthwaite.peter@gmail.com>,
	Alexander Graf <agraf@suse.de>
Cc: Peter Maydell <peter.maydell@linaro.org>,
	qemu-devel@nongnu.org, linux-renesas-soc@vger.kernel.org,
	Geert Uytterhoeven <geert+renesas@glider.be>
Subject: [PATCH qemu v3] device_tree: Increase FDT_MAX_SIZE to 1 MiB
Date: Thu, 12 Apr 2018 15:55:37 +0200	[thread overview]
Message-ID: <1523541337-23919-1-git-send-email-geert+renesas@glider.be> (raw)

It is not uncommon for a contemporary FDT to be larger than 64 KiB,
leading to failures loading the device tree from sysfs:

    qemu-system-aarch64: qemu_fdt_setprop: Couldn't set ...: FDT_ERR_NOSPACE

Hence increase the limit to 1 MiB, like on PPC.

For reference, the largest arm64 DTB created from the Linux sources is
ca. 75 KiB large (100 KiB when built with symbols/fixup support).

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
v3:
  - Update example size figures,

v2:
  - Enlarge from 128 KiB to 1 MiB, as suggested by Peter Maydell.
---
 device_tree.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/device_tree.c b/device_tree.c
index 19458b32bf81e55e..52c3358a55838d33 100644
--- a/device_tree.c
+++ b/device_tree.c
@@ -29,7 +29,7 @@
 
 #include <libfdt.h>
 
-#define FDT_MAX_SIZE  0x10000
+#define FDT_MAX_SIZE  0x100000
 
 void *create_device_tree(int *sizep)
 {
-- 
2.7.4

WARNING: multiple messages have this Message-ID (diff)
From: Geert Uytterhoeven <geert+renesas@glider.be>
To: Peter Crosthwaite <crosthwaite.peter@gmail.com>,
	Alexander Graf <agraf@suse.de>
Cc: Peter Maydell <peter.maydell@linaro.org>,
	qemu-devel@nongnu.org, linux-renesas-soc@vger.kernel.org,
	Geert Uytterhoeven <geert+renesas@glider.be>
Subject: [Qemu-devel] [PATCH qemu v3] device_tree: Increase FDT_MAX_SIZE to 1 MiB
Date: Thu, 12 Apr 2018 15:55:37 +0200	[thread overview]
Message-ID: <1523541337-23919-1-git-send-email-geert+renesas@glider.be> (raw)

It is not uncommon for a contemporary FDT to be larger than 64 KiB,
leading to failures loading the device tree from sysfs:

    qemu-system-aarch64: qemu_fdt_setprop: Couldn't set ...: FDT_ERR_NOSPACE

Hence increase the limit to 1 MiB, like on PPC.

For reference, the largest arm64 DTB created from the Linux sources is
ca. 75 KiB large (100 KiB when built with symbols/fixup support).

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
v3:
  - Update example size figures,

v2:
  - Enlarge from 128 KiB to 1 MiB, as suggested by Peter Maydell.
---
 device_tree.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/device_tree.c b/device_tree.c
index 19458b32bf81e55e..52c3358a55838d33 100644
--- a/device_tree.c
+++ b/device_tree.c
@@ -29,7 +29,7 @@
 
 #include <libfdt.h>
 
-#define FDT_MAX_SIZE  0x10000
+#define FDT_MAX_SIZE  0x100000
 
 void *create_device_tree(int *sizep)
 {
-- 
2.7.4

             reply	other threads:[~2018-04-12 13:55 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-12 13:55 Geert Uytterhoeven [this message]
2018-04-12 13:55 ` [Qemu-devel] [PATCH qemu v3] device_tree: Increase FDT_MAX_SIZE to 1 MiB Geert Uytterhoeven
2018-04-16 12:20 ` Peter Maydell
2018-04-16 12:20   ` [Qemu-devel] " Peter Maydell

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