[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Qemu-devel] [PATCH 0/5] ppc: Improve sPAPR CPU compatibility mode s

From: David Gibson
Subject: Re: [Qemu-devel] [PATCH 0/5] ppc: Improve sPAPR CPU compatibility mode settings
Date: Wed, 8 Jun 2016 11:11:18 +1000
User-agent: Mutt/1.6.1 (2016-04-27)

On Tue, Jun 07, 2016 at 05:39:35PM +0200, Thomas Huth wrote:
> If a guest currently only requests PowerISA 2.07 compatiblity mode with
> the "ibm,client-architecture-support" firmware call, but does not
> specify a matching real PVR for the host CPU on a POWER8 host,
> it ends up in POWER7 / PowerISA 2.06 compatibility mode since QEMU
> does not support 2.07 compatibility mode yet. This currently happens
> when running a Linux guest on a POWER8NVL host, since Linux guests
> do not use the PVR for these CPUs for the "ibm,client-architecture-
> support" call yet (but I submitted a patch for the kernel to fix this
> issue there last week, so the support should soon be there, too).
> Anyway, QEMU should also support a proper 2.07 compatibility mode
> if the host CPU can do it. So this patch series introduces such a
> mode and does some clean-ups and other fixes along the way (e.g.
> it splits the ambiguous pcr_mask setting into two variables, one
> for defining the valid bits in the PCR register, and one for
> storing the valid ISA levels).
> Thomas Huth (5):
>   ppc/spapr: Refactor h_client_architecture_support() CPU parsing code
>   ppc: Split pcr_mask settings into supported bits and the register mask
>   ppc: Provide function to get CPU class of the host CPU
>   ppc: Improve PCR bit selection in ppc_set_compat()
>   ppc: Add PowerISA 2.07 compatibility mode
>  hw/ppc/spapr_hcall.c        | 63 
> +++++++++++++++++++++++++++------------------
>  target-ppc/cpu-qom.h        |  3 ++-
>  target-ppc/cpu.h            |  1 +
>  target-ppc/kvm.c            | 19 ++++++++++----
>  target-ppc/kvm_ppc.h        |  7 +++++
>  target-ppc/translate_init.c | 22 +++++++++++-----
>  6 files changed, 78 insertions(+), 37 deletions(-)

Applied to ppc-for-2.7, thanks.

David Gibson                    | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au  | minimalist, thank you.  NOT _the_ _other_
                                | _way_ _around_!

Attachment: signature.asc
Description: PGP signature

reply via email to

[Prev in Thread] Current Thread [Next in Thread]