Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
modpost: Allow extended modversions without basic MODVERSIONS
If you know that your kernel modules will only ever be loaded by a newer
kernel, you can disable BASIC_MODVERSIONS to save space. This also
allows easy creation of test modules to see how tooling will respond to
modules that only have the new format.
Signed-off-by: Matthew Maurer <mmaurer@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
authored by
Matthew Maurer
and committed by
Masahiro Yamada
e8639b7e
fc7d5e32
+23
-2
+15
kernel/module/Kconfig
+15
kernel/module/Kconfig
···
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The most likely reason you would enable this is to enable Rust
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support. If unsure, say N.
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config BASIC_MODVERSIONS
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bool "Basic Module Versioning Support"
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depends on MODVERSIONS
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default y
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help
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This enables basic MODVERSIONS support, allowing older tools or
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kernels to potentially load modules.
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Disabling this may cause older `modprobe` or `kmod` to be unable
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to read MODVERSIONS information from built modules. With this
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disabled, older kernels may treat this module as unversioned.
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This is enabled by default when MODVERSIONS are enabled.
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If unsure, say Y.
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config MODULE_SRCVERSION_ALL
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bool "Source checksum for all modules"
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help
+1
scripts/Makefile.modpost
+1
scripts/Makefile.modpost
+7
-2
scripts/mod/modpost.c
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-2
scripts/mod/modpost.c
···
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static bool modversions;
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/* Is CONFIG_MODULE_SRCVERSION_ALL set? */
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static bool all_versions;
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/* Is CONFIG_BASIC_MODVERSIONS set? */
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static bool basic_modversions;
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/* Is CONFIG_EXTENDED_MODVERSIONS set? */
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static bool extended_modversions;
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/* If we are modposting external module set to 1 */
···
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{
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struct symbol *s;
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-
if (!modversions)
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if (!basic_modversions)
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return;
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buf_printf(b, "\n");
···
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LIST_HEAD(dump_lists);
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struct dump_list *dl, *dl2;
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while ((opt = getopt(argc, argv, "ei:MmnT:to:au:WwENd:x")) != -1) {
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while ((opt = getopt(argc, argv, "ei:MmnT:to:au:WwENd:xb")) != -1) {
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switch (opt) {
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case 'e':
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external_module = true;
···
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break;
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case 'd':
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missing_namespace_deps = optarg;
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break;
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case 'b':
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basic_modversions = true;
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break;
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case 'x':
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extended_modversions = true;