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The klp_object_ext and klp_func_ext data, which are stored in the __klp_objects and __klp_funcs sections, respectively, are not needed after they are used to create the actual klp_object and klp_func instances. This operation is implemented by the init function in scripts/livepatch/init.c. Prefix the two sections with ".init" so they are freed after the module is initializated. Signed-off-by: Petr Pavlu <petr.pavlu@suse.com> Acked-by: Joe Lawrence <joe.lawrence@redhat.com> Acked-by: Miroslav Benes <mbenes@suse.cz> Reviewed-by: Aaron Tomlin <atomlin@atomlin.com> Link: https://patch.msgid.link/20260123102825.3521961-3-petr.pavlu@suse.com Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
36 lines
1.0 KiB
C
36 lines
1.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#ifndef _OBJTOOL_KLP_H
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#define _OBJTOOL_KLP_H
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#define SHF_RELA_LIVEPATCH 0x00100000
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#define SHN_LIVEPATCH 0xff20
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/*
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* .init.klp_objects and .init.klp_funcs are created by klp diff and used by the
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* patch module init code to build the klp_patch, klp_object and klp_func
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* structs needed by the livepatch API.
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*/
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#define KLP_OBJECTS_SEC ".init.klp_objects"
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#define KLP_FUNCS_SEC ".init.klp_funcs"
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/*
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* __klp_relocs is an intermediate section which are created by klp diff and
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* converted into KLP symbols/relas by "objtool klp post-link". This is needed
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* to work around the linker, which doesn't preserve SHN_LIVEPATCH or
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* SHF_RELA_LIVEPATCH, nor does it support having two RELA sections for a
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* single PROGBITS section.
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*/
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#define KLP_RELOCS_SEC "__klp_relocs"
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#define KLP_STRINGS_SEC ".rodata.klp.str1.1"
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struct klp_reloc {
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void *offset;
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void *sym;
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u32 type;
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};
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int cmd_klp_diff(int argc, const char **argv);
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int cmd_klp_post_link(int argc, const char **argv);
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#endif /* _OBJTOOL_KLP_H */
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