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>
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@ -47,14 +47,6 @@
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#include <linux/linux_logo.h>
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/*
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* Properties whose value is longer than this get excluded from our
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* copy of the device tree. This value does need to be big enough to
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* ensure that we don't lose things like the interrupt-map property
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* on a PCI-PCI bridge.
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*/
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#define MAX_PROPERTY_LENGTH (1UL * 1024 * 1024)
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/*
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* Eventually bump that one up
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*/
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@ -2273,13 +2265,6 @@ static void __init scan_dt_build_struct(phandle node, unsigned long *mem_start,
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/* sanity checks */
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if (l == PROM_ERROR)
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continue;
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if (l > MAX_PROPERTY_LENGTH) {
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prom_printf("WARNING: ignoring large property ");
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/* It seems OF doesn't null-terminate the path :-( */
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prom_printf("[%s] ", path);
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prom_printf("%s length 0x%x\n", RELOC(pname), l);
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continue;
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}
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/* push property head */
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dt_push_token(OF_DT_PROP, mem_start, mem_end);
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