diff options
Diffstat (limited to 'arch/powerpc/platforms/pseries/hvCall.S')
| -rw-r--r-- | arch/powerpc/platforms/pseries/hvCall.S | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/pseries/hvCall.S b/arch/powerpc/platforms/pseries/hvCall.S index 1501b0a9e749..c1427b3634ec 100644 --- a/arch/powerpc/platforms/pseries/hvCall.S +++ b/arch/powerpc/platforms/pseries/hvCall.S @@ -30,9 +30,14 @@ END_FTR_SECTION_IFSET(CPU_FTR_PURR); /* * postcall is performed immediately before function return which - * allows liberal use of volatile registers. + * allows liberal use of volatile registers. We branch around this + * in early init (eg when populating the MMU hashtable) by using an + * unconditional cpu feature. */ #define HCALL_INST_POSTCALL \ +BEGIN_FTR_SECTION; \ + b 1f; \ +END_FTR_SECTION(0, 1); \ ld r4,STK_PARM(r3)(r1); /* validate opcode */ \ cmpldi cr7,r4,MAX_HCALL_OPCODE; \ bgt- cr7,1f; \ |