141cb99b41
This is an automatically generated commit which aids following Kernel patch history, as git will see the move and copy as a rename thus defeating the purpose. For the original discussion see: https://lists.openwrt.org/pipermail/openwrt-devel/2023-October/041673.html Signed-off-by: Mieczyslaw Nalewaj <namiltd@yahoo.com> Link: https://github.com/openwrt/openwrt/pull/21078 Signed-off-by: Robert Marko <robimarko@gmail.com>
63 lines
1.8 KiB
Diff
63 lines
1.8 KiB
Diff
From: Christian Marangi <ansuelsmth@gmail.com>
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Date: Mon, 14 Apr 2025 18:04:25 +0200
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Subject: [PATCH 1/2] mm: permit to declare custom execmem alloc/free function
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Permit to declare custom execmem alloc/free function that bypass the
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execmem API. This works by making the alloc/free function weak
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permitting an arch to declare a replacement for them.
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Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
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Co-authored-by: Shiji Yang <yangshiji66@outlook.com>
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---
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include/linux/moduleloader.h | 4 ++++
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mm/execmem.c | 14 ++++++++++++--
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2 files changed, 16 insertions(+), 2 deletions(-)
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--- a/include/linux/moduleloader.h
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+++ b/include/linux/moduleloader.h
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@@ -122,4 +122,8 @@ void module_arch_cleanup(struct module *
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/* Any cleanup before freeing mod->module_init */
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void module_arch_freeing_init(struct module *mod);
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+enum execmem_type;
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+void *arch_execmem_alloc(enum execmem_type type, size_t size);
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+void arch_execmem_free(void *ptr);
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+
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#endif
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--- a/mm/execmem.c
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+++ b/mm/execmem.c
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@@ -52,14 +52,19 @@ static void *__execmem_alloc(struct exec
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return kasan_reset_tag(p);
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}
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-void *execmem_alloc(enum execmem_type type, size_t size)
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+void *__weak arch_execmem_alloc(enum execmem_type type, size_t size)
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{
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struct execmem_range *range = &execmem_info->ranges[type];
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return __execmem_alloc(range, size);
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}
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-void execmem_free(void *ptr)
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+void *execmem_alloc(enum execmem_type type, size_t size)
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+{
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+ return arch_execmem_alloc(type, size);
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+}
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+
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+void __weak arch_execmem_free(void *ptr)
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{
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/*
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* This memory may be RO, and freeing RO memory in an interrupt is not
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@@ -69,6 +74,11 @@ void execmem_free(void *ptr)
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vfree(ptr);
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}
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+void execmem_free(void *ptr)
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+{
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+ arch_execmem_free(ptr);
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+}
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+
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static bool execmem_validate(struct execmem_info *info)
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{
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struct execmem_range *r = &info->ranges[EXECMEM_DEFAULT];
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