Re: [Qemu-devel] [PULL 57/60] target/ppc: add HV support for POWER9

[Cleber Rosa]

On Sun, Mar 10, 2019 at 07:27:00PM +1100, David Gibson wrote:
> From: Cédric Le Goater <address@hidden>
> 
> We now have enough support to boot a PowerNV machine with a POWER9
> processor. Allow HV mode on POWER9.
> 
> Signed-off-by: Cédric Le Goater <address@hidden>
> Message-Id: <address@hidden>
> Signed-off-by: David Gibson <address@hidden>
> ---
>  target/ppc/translate_init.inc.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/target/ppc/translate_init.inc.c b/target/ppc/translate_init.inc.c
> index af70a3b78c..0bd555eb19 100644
> --- a/target/ppc/translate_init.inc.c
> +++ b/target/ppc/translate_init.inc.c
> @@ -8895,7 +8895,7 @@ POWERPC_FAMILY(POWER9)(ObjectClass *oc, void *data)
>                         PPC_CACHE | PPC_CACHE_ICBI | PPC_CACHE_DCBZ |
>                         PPC_MEM_SYNC | PPC_MEM_EIEIO |
>                         PPC_MEM_TLBSYNC |
> -                       PPC_64B | PPC_64BX | PPC_ALTIVEC |
> +                       PPC_64B | PPC_64H | PPC_64BX | PPC_ALTIVEC |
>                         PPC_SEGMENT_64B | PPC_SLBI |
>                         PPC_POPCNTB | PPC_POPCNTWD |
>                         PPC_CILDST;
> @@ -8907,6 +8907,7 @@ POWERPC_FAMILY(POWER9)(ObjectClass *oc, void *data)
>                          PPC2_ISA205 | PPC2_ISA207S | PPC2_FP_CVT_S64 |
>                          PPC2_TM | PPC2_ISA300 | PPC2_PRCNTL;
>      pcc->msr_mask = (1ull << MSR_SF) |
> +                    (1ull << MSR_SHV) |
>                      (1ull << MSR_TM) |
>                      (1ull << MSR_VR) |
>                      (1ull << MSR_VSX) |
> -- 
> 2.20.1
> 
> 

This change prevents a Fedora 29 kernel[1] from booting... is this
intended or a known limitation of the Fedora 29 kernel?

FIY, by using a "power8" CPU the Fedora 29 kernel boots successfully.
For a reproducer, please refer to [2].

Thanks,
- Cleber.

[1] - 
https://download.fedoraproject.org/pub/fedora-secondary/releases/29/Everything/ppc64le/os/ppc/ppc64/vmlinuz

[2] - 
https://github.com/clebergnu/qemu/blob/sent/target_arch_v4/tests/acceptance/boot_linux_console.py#L138