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[PATCH 2/2] spapr.h: increase FDT_MAX_SIZE
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From: |
Daniel Henrique Barboza |
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Subject: |
[PATCH 2/2] spapr.h: increase FDT_MAX_SIZE |
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Date: |
Thu, 8 Apr 2021 17:40:49 -0300 |
Certain SMP topologies stress, e.g. 1 thread/core, 2048 cores and
1 socket, stress the current maximum size of the pSeries FDT:
Calling ibm,client-architecture-support...qemu-system-ppc64: error
creating device tree: (fdt_setprop(fdt, offset,
"ibm,processor-segment-sizes", segs, sizeof(segs))): FDT_ERR_NOSPACE
2048 is the default NR_CPUS value for the pSeries kernel. It's expected
that users will want QEMU to be able to handle this kind of
configuration.
Bumping FDT_MAX_SIZE to 2MB is enough for these setups to be created.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
---
include/hw/ppc/spapr.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h
index bf7cab7a2c..3deb382678 100644
--- a/include/hw/ppc/spapr.h
+++ b/include/hw/ppc/spapr.h
@@ -95,7 +95,7 @@ typedef enum {
#define SPAPR_CAP_FIXED_CCD 0x03
#define SPAPR_CAP_FIXED_NA 0x10 /* Lets leave a bit of a gap... */
-#define FDT_MAX_SIZE 0x100000
+#define FDT_MAX_SIZE 0x200000
/*
* NUMA related macros. MAX_DISTANCE_REF_POINTS was taken
--
2.30.2