From: Steven Rostedt (VMware) rostedt@goodmis.org
commit 693713cbdb3a4bda5a8a678c31f06560bbb14657 upstream.
User Mode Linux does not have access to the ip or sp fields of the pt_regs, and accessing them causes UML to fail to build. Hide the int3_emulate_jmp() and int3_emulate_call() instructions from UML, as it doesn't need them anyway.
Reported-by: kbuild test robot lkp@intel.com Signed-off-by: Steven Rostedt (VMware) rostedt@goodmis.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- arch/x86/include/asm/text-patching.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
--- a/arch/x86/include/asm/text-patching.h +++ b/arch/x86/include/asm/text-patching.h @@ -38,6 +38,7 @@ extern void *text_poke(void *addr, const extern int poke_int3_handler(struct pt_regs *regs); extern void *text_poke_bp(void *addr, const void *opcode, size_t len, void *handler);
+#ifndef CONFIG_UML_X86 static inline void int3_emulate_jmp(struct pt_regs *regs, unsigned long ip) { regs->ip = ip; @@ -64,6 +65,7 @@ static inline void int3_emulate_call(str int3_emulate_push(regs, regs->ip - INT3_INSN_SIZE + CALL_INSN_SIZE); int3_emulate_jmp(regs, func); } -#endif +#endif /* CONFIG_X86_64 */ +#endif /* !CONFIG_UML_X86 */
#endif /* _ASM_X86_TEXT_PATCHING_H */