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analyze-migration.py: Remove trick on parsing ramblocks 

RAM_SAVE_FLAG_MEM_SIZE contains the total length of ramblock idstr to know
whether scanning of ramblocks is complete.  Drop the trick.

Reviewed-by: Fabiano Rosas <farosas@suse.de>
Link: https://lore.kernel.org/r/20240117075848.139045-4-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
This commit is contained in:
Peter Xu 2024-01-17 15:58:48 +08:00
parent b0504edd40
commit 434b8adcf3
1 changed files with 3 additions and 8 deletions
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11
scripts/analyze-migration.py
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@ -151,17 +151,12 @@ class RamSection(object):
addr &= ~(self.TARGET_PAGE_SIZE - 1) addr &= ~(self.TARGET_PAGE_SIZE - 1)
if flags & self.RAM_SAVE_FLAG_MEM_SIZE: if flags & self.RAM_SAVE_FLAG_MEM_SIZE:
while True: total_length = addr
while total_length > 0:
namelen = self.file.read8() namelen = self.file.read8()
# We assume that no RAM chunk is big enough to ever
# hit the first byte of the address, so when we see
# a zero here we know it has to be an address, not the
# length of the next block.
if namelen == 0:
self.file.file.seek(-1, 1)
break
self.name = self.file.readstr(len = namelen) self.name = self.file.readstr(len = namelen)
len = self.file.read64() len = self.file.read64()
total_length -= len
self.sizeinfo[self.name] = '0x%016x' % len self.sizeinfo[self.name] = '0x%016x' % len
if self.write_memory: if self.write_memory:
print(self.name) print(self.name)