cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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core.h (1503B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef _LIVEPATCH_CORE_H
      3#define _LIVEPATCH_CORE_H
      4
      5#include <linux/livepatch.h>
      6
      7extern struct mutex klp_mutex;
      8extern struct list_head klp_patches;
      9
     10#define klp_for_each_patch_safe(patch, tmp_patch)		\
     11	list_for_each_entry_safe(patch, tmp_patch, &klp_patches, list)
     12
     13#define klp_for_each_patch(patch)	\
     14	list_for_each_entry(patch, &klp_patches, list)
     15
     16void klp_free_patch_async(struct klp_patch *patch);
     17void klp_free_replaced_patches_async(struct klp_patch *new_patch);
     18void klp_unpatch_replaced_patches(struct klp_patch *new_patch);
     19void klp_discard_nops(struct klp_patch *new_patch);
     20
     21static inline bool klp_is_object_loaded(struct klp_object *obj)
     22{
     23	return !obj->name || obj->mod;
     24}
     25
     26static inline int klp_pre_patch_callback(struct klp_object *obj)
     27{
     28	int ret = 0;
     29
     30	if (obj->callbacks.pre_patch)
     31		ret = (*obj->callbacks.pre_patch)(obj);
     32
     33	obj->callbacks.post_unpatch_enabled = !ret;
     34
     35	return ret;
     36}
     37
     38static inline void klp_post_patch_callback(struct klp_object *obj)
     39{
     40	if (obj->callbacks.post_patch)
     41		(*obj->callbacks.post_patch)(obj);
     42}
     43
     44static inline void klp_pre_unpatch_callback(struct klp_object *obj)
     45{
     46	if (obj->callbacks.pre_unpatch)
     47		(*obj->callbacks.pre_unpatch)(obj);
     48}
     49
     50static inline void klp_post_unpatch_callback(struct klp_object *obj)
     51{
     52	if (obj->callbacks.post_unpatch_enabled &&
     53	    obj->callbacks.post_unpatch)
     54		(*obj->callbacks.post_unpatch)(obj);
     55
     56	obj->callbacks.post_unpatch_enabled = false;
     57}
     58
     59#endif /* _LIVEPATCH_CORE_H */