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-rw-r--r--include/linux/ptrace.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h
index dbfa821d5a6e..c5eab89da51e 100644
--- a/include/linux/ptrace.h
+++ b/include/linux/ptrace.h
@@ -30,6 +30,11 @@
/*
* Generic ptrace interface that exports the architecture specific regsets
* using the corresponding NT_* types (which are also used in the core dump).
+ * Please note that the NT_PRSTATUS note type in a core dump contains a full
+ * 'struct elf_prstatus'. But the user_regset for NT_PRSTATUS contains just the
+ * elf_gregset_t that is the pr_reg field of 'struct elf_prstatus'. For all the
+ * other user_regset flavors, the user_regset layout and the ELF core dump note
+ * payload are exactly the same layout.
*
* This interface usage is as follows:
* struct iovec iov = { buf, len};