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Re: [Qemu-devel] [PATCH v2] target/s390x/cpu_models: Allow some addition
From: |
Aurelien Jarno |
Subject: |
Re: [Qemu-devel] [PATCH v2] target/s390x/cpu_models: Allow some additional feature bits for the "qemu" CPU |
Date: |
Fri, 26 May 2017 11:36:33 +0200 |
User-agent: |
NeoMutt/20170113 (1.7.2) |
On 2017-05-25 11:22, Thomas Huth wrote:
> Currently we only present the plain z900 feature bits to the guest,
> but QEMU already emulates some additional features (but not all of
> the next CPU generation, so we can not use the next CPU level as
> default yet). Since newer Linux kernels are checking the feature bits
> and refuse to work if a required feature is missing, it would be nice
> to have a way to present more of the supported features when we are
> running with the "qemu" CPU.
> This patch now adds the supported features to the "full_feat" bitmap,
> so that additional features can be enabled on the command line now,
> for example with:
>
> qemu-system-s390x -cpu qemu,stfle=true,ldisp=true,eimm=true,stckf=true
>
> Signed-off-by: Thomas Huth <address@hidden>
> ---
> v2: Mark feats array with "static const"
>
> target/s390x/cpu_models.c | 34 +++++++++++++++++++++++++++++++---
> 1 file changed, 31 insertions(+), 3 deletions(-)
Reviewed-by: Aurelien Jarno <address@hidden>
--
Aurelien Jarno GPG: 4096R/1DDD8C9B
address@hidden http://www.aurel32.net