Re: Latest qemu tcg breakage

[Jerone Young <jyoung5@us.ibm.com>]

On Mon, 2008-06-09 at 16:02 -0500, Anthony Liguori wrote:
> Jerone Young wrote:
> > Actually I was mistaken. While upstream qemu does compile, after doing a
> > clean on my local directory of kvm-userspace. I'm finding that after
> > removing cpu-emulation stuff I get a error when building exec.c
> >
> > In file included from /home/jerone/work/kvm-userspace/qemu/tcg/tcg.h:50,
> >                  from /home/jerone/work/kvm-userspace/qemu/exec.c:40:
> > /home/jerone/work/kvm-userspace/qemu/tcg/tcg-opc.h:25:24: dyngen-opc.h:
> > No such file or directory
> >   
> 
> dyngen-opc.h is build from op.o.  If you removed CONFIG_DYNGEN_OP, op.o 
> won't be added to LIBOBJS which would cause this problem.

Yeah did that .. got a lot more errors after that. Something else is in
the mix. I'll try and figure it out tonight.

> 
> > Now removing CONFIG_DYNGEN from configure yields more errors ;-). This
> > is removed for x86 & ia64.
> >   
> 
> Don't do that.  PPC still depends on dyngen.  Nothing is wrong with 
> dyngen on PPC, the problem was that TCG didn't support PPC.  It does now 
> though.
> 
> Regards,
> 
> Anthony Liguori
> 
> > So lets not remove it till can git this sorted out. But here is a patch
> > attached to play with :-L 
> >
> >
> > On Mon, 2008-06-09 at 11:35 -0500, Anthony Liguori wrote:
> >   
> >> Jerone Young wrote:
> >>     
> >>> So upstream qemu is being pervasive about changes with TCG, starting to
> >>> place tcg only functions in exec.c . I've spun a quick patch that fixes
> >>> things for PowerPC when building qemu. But we need to try and isolate
> >>> TCG in upstream qemu as it is starting to leak, and I'm not sure of a
> >>> good way to fix it as there is no CONFIG defined for tcg  currently.
> >>>
> >>> Just something to keep in mind.
> >>>   
> >>>       
> >> Now that TCG supports PPC, shouldn't ya'll be able to drop 
> >> --disable-cpu-emulation.  I believe that will simultaneously fix your 
> >> problem and reduce the difference between upstream QEMU.
> >>
> >> Regards,
> >>
> >> Anthony Liguori
> >>
> >>     
> >>> Signed-off-by: Jerone Young <jyoung5@us.ibm.com>
> >>>
> >>> diff --git a/qemu/Makefile.target b/qemu/Makefile.target
> >>> --- a/qemu/Makefile.target
> >>> +++ b/qemu/Makefile.target
> >>> @@ -196,7 +196,6 @@ LIBOBJS+=fake-exec.o
> >>>  LIBOBJS+=fake-exec.o
> >>>  else
> >>>  LIBOBJS+= translate-all.o translate.o
> >>> -endif
> >>>  ifdef CONFIG_DYNGEN_OP
> >>>  LIBOBJS+=op.o
> >>>  endif
> >>> @@ -205,6 +204,7 @@ CPPFLAGS+=-I$(SRC_PATH)/tcg -I$(SRC_PATH
> >>>  CPPFLAGS+=-I$(SRC_PATH)/tcg -I$(SRC_PATH)/tcg/$(ARCH)
> >>>  ifeq ($(ARCH),sparc64)
> >>>  CPPFLAGS+=-I$(SRC_PATH)/tcg/sparc
> >>> +endif
> >>>  endif
> >>>  
> >>>  ifeq ($(USE_KVM), 1)
> >>> diff --git a/qemu/exec.c b/qemu/exec.c
> >>> --- a/qemu/exec.c
> >>> +++ b/qemu/exec.c
> >>> @@ -37,8 +37,11 @@
> >>>  #include "exec-all.h"
> >>>  #include "qemu-common.h"
> >>>  
> >>> +#ifdef USE_KVM
> >>> +#include "qemu-kvm.h"
> >>> +#else
> >>>  #include "tcg.h"
> >>> -#include "qemu-kvm.h"
> >>> +#endif
> >>>  
> >>>  #if defined(CONFIG_USER_ONLY)
> >>>  #include <qemu.h>
> >>> @@ -3197,7 +3200,9 @@ void dump_exec_info(FILE *f,
> >>>      cpu_fprintf(f, "TB flush count      %d\n", tb_flush_count);
> >>>      cpu_fprintf(f, "TB invalidate count %d\n",
> >>> tb_phys_invalidate_count);
> >>>      cpu_fprintf(f, "TLB flush count     %d\n", tlb_flush_count);
> >>> +#if !defined(USE_KVM)
> >>>      tcg_dump_info(f, cpu_fprintf);
> >>> +#endif
> >>>  }
> >>>  
> >>>  #if !defined(CONFIG_USER_ONLY)
> >>>
> >>>
> >>> --
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> >>>       
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>