On Mon, 2016-06-20 at 15:51 +0530, Aneesh Kumar K.V wrote: > Michael Ellerman <m...@ellerman.id.au> writes: > > diff --git a/arch/powerpc/kernel/exceptions-64s.S > > b/arch/powerpc/kernel/exceptions-64s.S > > index 4c9440629128..8bcc1b457115 100644 > > --- a/arch/powerpc/kernel/exceptions-64s.S > > +++ b/arch/powerpc/kernel/exceptions-64s.S > > @@ -1399,11 +1399,12 @@ END_MMU_FTR_SECTION_IFCLR(MMU_FTR_RADIX) > > lwz r9,PACA_EXSLB+EX_CCR(r13) /* get saved CR */ > > > > mtlr r10 > > -BEGIN_MMU_FTR_SECTION > > - b 2f > > -END_MMU_FTR_SECTION_IFSET(MMU_FTR_RADIX) > > andi. r10,r12,MSR_RI /* check for unrecoverable exception */ > > +BEGIN_MMU_FTR_SECTION > > beq- 2f > > +FTR_SECTION_ELSE > > + b 2f > > +ALT_MMU_FTR_SECTION_END_IFCLR(MMU_FTR_RADIX) > > > > .machine push > > .machine "power4" > > I sent a patch which should get this problem fixed. > > http://mid.gmane.org/1466274479-5650-1-git-send-email-aneesh.ku...@linux.vnet.ibm.com
Well s/fixed/avoided/. I'd rather we fixed the root cause, which is that the SLB miss handler is broken until code patching happens. When possible we should write feature sections so that the unpatched code is functional, to avoid problems like this. cheers _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
