diff options
Diffstat (limited to 'arch/s390/kernel/entry.S')
| -rw-r--r-- | arch/s390/kernel/entry.S | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S index 2d47f9cfcb36..c51650a1ed16 100644 --- a/arch/s390/kernel/entry.S +++ b/arch/s390/kernel/entry.S @@ -163,6 +163,16 @@ _PIF_WORK = (_PIF_PER_TRAP) .endm .section .kprobes.text, "ax" +.Ldummy: + /* + * This nop exists only in order to avoid that __switch_to starts at + * the beginning of the kprobes text section. In that case we would + * have several symbols at the same address. E.g. objdump would take + * an arbitrary symbol name when disassembling this code. + * With the added nop in between the __switch_to symbol is unique + * again. + */ + nop 0 /* * Scheduler resume function, called by switch_to @@ -175,7 +185,6 @@ ENTRY(__switch_to) stmg %r6,%r15,__SF_GPRS(%r15) # store gprs of prev task lgr %r1,%r2 aghi %r1,__TASK_thread # thread_struct of prev task - lg %r4,__TASK_thread_info(%r2) # get thread_info of prev lg %r5,__TASK_thread_info(%r3) # get thread_info of next stg %r15,__THREAD_ksp(%r1) # store kernel stack of prev lgr %r1,%r3 |