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| author | Nishanth Aravamudan <nacc@linux.vnet.ibm.com> | 2012-02-27 08:55:15 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-03-07 17:06:10 +1100 |
| commit | e9daf2ad7f603f173d7cd7ee3673b326414f82f4 (patch) | |
| tree | 2aae8013c2948b243c797370bdeef649360a2405 /arch | |
| parent | a2007ce8447c9a71d9d694ddcdf64f9dbbf022ff (diff) | |
| download | op-kernel-dev-e9daf2ad7f603f173d7cd7ee3673b326414f82f4.zip op-kernel-dev-e9daf2ad7f603f173d7cd7ee3673b326414f82f4.tar.gz | |
powerpc/prom: Remove limit on maximum size of properties
On a 16TB system (using AMS/CMO), I get:
WARNING: ignoring large property [/ibm,dynamic-reconfiguration-memory] ibm,dynamic-memory length 0x000000000017ffec
and significantly less memory is thus shown to the partition. As far as
I can tell, the constant used is arbitrary. Ben Herrenschmidt provided
additional background that
> The limit was originally set because of Apple machines carrying ROM
> images in the device-tree, at a time where we were much more memory
> constrained than we are now.
and that it is likely not very useful any longer.
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/kernel/prom_init.c | 15 |
1 files changed, 0 insertions, 15 deletions
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c index eca626e..e2d5990 100644 --- a/arch/powerpc/kernel/prom_init.c +++ b/arch/powerpc/kernel/prom_init.c @@ -48,14 +48,6 @@ #include <linux/linux_logo.h> /* - * Properties whose value is longer than this get excluded from our - * copy of the device tree. This value does need to be big enough to - * ensure that we don't lose things like the interrupt-map property - * on a PCI-PCI bridge. - */ -#define MAX_PROPERTY_LENGTH (1UL * 1024 * 1024) - -/* * Eventually bump that one up */ #define DEVTREE_CHUNK_SIZE 0x100000 @@ -2273,13 +2265,6 @@ static void __init scan_dt_build_struct(phandle node, unsigned long *mem_start, /* sanity checks */ if (l == PROM_ERROR) continue; - if (l > MAX_PROPERTY_LENGTH) { - prom_printf("WARNING: ignoring large property "); - /* It seems OF doesn't null-terminate the path :-( */ - prom_printf("[%s] ", path); - prom_printf("%s length 0x%x\n", RELOC(pname), l); - continue; - } /* push property head */ dt_push_token(OF_DT_PROP, mem_start, mem_end); |
