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[Qemu-ppc] [PATCH] migration: fix analyze-migration.py script with radix
From: |
Laurent Vivier |
Subject: |
[Qemu-ppc] [PATCH] migration: fix analyze-migration.py script with radix table |
Date: |
Tue, 5 Dec 2017 13:27:40 +0100 |
Since commit 3a38429748 ("Add a "no HPT" encoding to HTAB migration stream")
the HTAB migration stream contains a header set to "-1", meaning there
is no HPT. Teach analyze-migration.py to ignore the section in this case.
Without this fix, the script fails with a dump from a POWER9 guest:
Traceback (most recent call last):
File "./qemu/scripts/analyze-migration.py", line 602, in <module>
dump.read(dump_memory = args.memory)
File "./qemu/scripts/analyze-migration.py", line 539, in read
section.read()
File "./qemu/scripts/analyze-migration.py", line 250, in read
self.file.readvar(n_valid * self.HASH_PTE_SIZE_64)
File "./qemu/scripts/analyze-migration.py", line 64, in readvar
raise Exception("Unexpected end of %s at 0x%x" % (self.filename,
self.file.tell()))
Exception: Unexpected end of migrate.dump at 0x1d4763ba
Fixes: 3a38429748 ("Add a "no HPT" encoding to HTAB migration stream")
Signed-off-by: Laurent Vivier <address@hidden>
---
scripts/analyze-migration.py | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/scripts/analyze-migration.py b/scripts/analyze-migration.py
index 14553876a2..88ff4adb30 100755
--- a/scripts/analyze-migration.py
+++ b/scripts/analyze-migration.py
@@ -234,6 +234,10 @@ class HTABSection(object):
header = self.file.read32()
+ if (header == -1):
+ # "no HPT" encoding
+ return
+
if (header > 0):
# First section, just the hash shift
return
--
2.14.3
- [Qemu-ppc] [PATCH] migration: fix analyze-migration.py script with radix table,
Laurent Vivier <=