| commit | eb887ac7b18e01926b9160eb0fde18913d838227 | [log] [tgz] |
|---|---|---|
| author | Pierre-Clément Tosi <ptosi@google.com> | Tue May 02 13:33:37 2023 +0000 |
| committer | Pierre-Clément Tosi <ptosi@google.com> | Tue May 02 17:38:14 2023 +0000 |
| tree | 91690e0a5a7eab3fa26edf242910c15c205f4862 | |
| parent | a50167bc606a67ba422c0bf02f06c865d0b5bd3e [diff] |
pvmfw: apply_debug_policy: Backup DT before unpacking
As the DT needs to be backed-up before applying the overlay due to
fdt_apply_overlay corrupting its inputs on failure, do so before
unpacking it, reducing the amount of memory needed by the backup Vec
from the maximum size that the DT could occupy (here, 2MiB) to the
actual size that the DT has (here, a few KiB).
Note: This wasn't detected previously due to a bug in Fdt::header()
causing fdt.as_slice() == &[] but will be required once the bug is
fixed as pvmfw's HEAP can't hold a 2MiB slice.
Test: atest MicrodroidHostTests
Change-Id: Ic6e651a73c4fb97e4bf97c32edc0b327b6cd1def
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