mirror of
https://github.com/dynup/kpatch
synced 2024-12-23 05:32:13 +00:00
926e4e0c7d
Upstream 4.15 kernels provide support for pre and post (un)patch callbacks, inspired by the kpatch load hooks. Add support for them in the livepatch-patch-hook. At the same time, convert the kpatch hooks to use the same API. Signed-off-by: Joe Lawrence <joe.lawrence@redhat.com>
51 lines
1.5 KiB
ArmAsm
51 lines
1.5 KiB
ArmAsm
__kpatch_funcs = ADDR(.kpatch.funcs);
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__kpatch_funcs_end = ADDR(.kpatch.funcs) + SIZEOF(.kpatch.funcs);
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#ifdef __KPATCH_MODULE__
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__kpatch_dynrelas = ADDR(.kpatch.dynrelas);
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__kpatch_dynrelas_end = ADDR(.kpatch.dynrelas) + SIZEOF(.kpatch.dynrelas);
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__kpatch_checksum = ADDR(.kpatch.checksum);
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#endif
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SECTIONS
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{
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.kpatch.callbacks.pre_patch : {
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__kpatch_callbacks_pre_patch = . ;
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*(.kpatch.callbacks.pre_patch)
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__kpatch_callbacks_pre_patch_end = . ;
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/*
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* Pad the end of the section with zeros in case the section is empty.
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* This prevents the kernel from discarding the section at module
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* load time. __kpatch_callbacks_pre_patch_end will still point to the
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* end of the section before the padding. If the
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* .kpatch.callbacks.pre_patch section is empty,
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* __kpatch_callbacks_pre_patch equals __kpatch_callbacks_pre_patch_end.
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*/
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QUAD(0);
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}
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.kpatch.callbacks.post_patch : {
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__kpatch_callbacks_post_patch = . ;
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*(.kpatch.callbacks.post_patch)
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__kpatch_callbacks_post_patch_end = . ;
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QUAD(0);
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}
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.kpatch.callbacks.pre_unpatch : {
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__kpatch_callbacks_pre_unpatch = . ;
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*(.kpatch.callbacks.pre_unpatch)
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__kpatch_callbacks_pre_unpatch_end = . ;
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QUAD(0);
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}
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.kpatch.callbacks.post_unpatch : {
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__kpatch_callbacks_post_unpatch = . ;
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*(.kpatch.callbacks.post_unpatch)
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__kpatch_callbacks_post_unpatch_end = . ;
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QUAD(0);
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}
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.kpatch.force : {
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__kpatch_force_funcs = . ;
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*(.kpatch.force)
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__kpatch_force_funcs_end = . ;
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QUAD(0);
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}
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}
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