Re: [Qemu-devel] [PATCH] PPC: Bump qemu-system-ppc to 64-bit physical address space

[Andreas Färber]

Am 18.10.2011 01:52, schrieb Alexander Graf:
> Some 32-bit PPC CPUs can use up to 36 bit of physicall address space.
> Treat them accordingly in the qemu-system-ppc binary type.

physical

> Signed-off-by: Alexander Graf <address@hidden>
> ---
>  configure        |    2 +-
>  target-ppc/cpu.h |    2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/configure b/configure
> index 9b4fe34..3bdb556 100755
> --- a/configure
> +++ b/configure
> @@ -3276,7 +3276,7 @@ case "$target_arch2" in
>    ;;
>    ppc)
>      gdb_xml_files="power-core.xml power-fpu.xml power-altivec.xml 
> power-spe.xml"
> -    target_phys_bits=32
> +    target_phys_bits=64
>      target_nptl="yes"
>      target_libs_softmmu="$fdt_libs"
>    ;;

I've found this very unintuitive for the new targets I'm preparing.
Could we use the real target_phys_bits=36 here and later on ceil this to
32/64 before using it for libhw${target_phys_bits}?

Andreas

> diff --git a/target-ppc/cpu.h b/target-ppc/cpu.h
> index 8e5c85c..f36f375 100644
> --- a/target-ppc/cpu.h
> +++ b/target-ppc/cpu.h
> @@ -66,7 +66,7 @@
>  #define TARGET_PAGE_BITS 12
>  #endif /* defined(TARGET_PPCEMB) */
>  
> -#define TARGET_PHYS_ADDR_SPACE_BITS 32
> +#define TARGET_PHYS_ADDR_SPACE_BITS 36
>  #define TARGET_VIRT_ADDR_SPACE_BITS 32
>  
>  #endif /* defined (TARGET_PPC64) */


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