linux-kernel - [PATCH v4 1/7] scripts/make

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20251006230205.521341-2-sjg@chromium.org>
Date: Mon,  6 Oct 2025 17:01:52 -0600
From: Simon Glass <sjg@...omium.org>
To: linux-arm-kernel@...ts.infradead.org
Cc: Chen-Yu Tsai <wenst@...omium.org>,
	Ahmad Fatoum <a.fatoum@...gutronix.de>,
	Masahiro Yamada <masahiroy@...nel.org>,
	J . Neuschäfer <j.ne@...teo.net>,
	Nicolas Schier <nicolas@...sle.eu>,
	Tom Rini <trini@...sulko.com>,
	Simon Glass <sjg@...omium.org>,
	linux-kernel@...r.kernel.org
Subject: [PATCH v4 1/7] scripts/make_fit: Speed up operation

The kernel is likely at least 16MB so we may as well use that as a step
size when reallocating space for the FIT in memory. Pack the FIT at the
end, so there is no wasted space.

This reduces the time to pack by an order of magnitude, or so.

Signed-off-by: Simon Glass <sjg@...omium.org>
---

(no changes since v3)

Changes in v3:
- Move the ramdisk chunk into the correct patch

 scripts/make_fit.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/scripts/make_fit.py b/scripts/make_fit.py
index 1683e5ec6e67..0f5e7c4b8aed 100755
--- a/scripts/make_fit.py
+++ b/scripts/make_fit.py
@@ -98,7 +98,7 @@ def setup_fit(fsw, name):
         fsw (libfdt.FdtSw): Object to use for writing
         name (str): Name of kernel image
     """
-    fsw.INC_SIZE = 65536
+    fsw.INC_SIZE = 16 << 20
     fsw.finish_reservemap()
     fsw.begin_node('')
     fsw.property_string('description', f'{name} with devicetree set')
@@ -299,7 +299,9 @@ def build_fit(args):
     finish_fit(fsw, entries)
 
     # Include the kernel itself in the returned file count
-    return fsw.as_fdt().as_bytearray(), seq + 1, size
+    fdt = fsw.as_fdt()
+    fdt.pack()
+    return fdt.as_bytearray(), seq + 1, size
 
 
 def run_make_fit():
-- 
2.43.0