Re: [Qemu-devel] [RFC PATCH] target/s390x/cpu_models: Set some additional feature bits for the "qemu" CPU

2017-05-18 Thread Thomas Huth
On 18.05.2017 11:14, David Hildenbrand wrote: > On 18.05.2017 11:05, Thomas Huth wrote: >> On 18.05.2017 11:00, Christian Borntraeger wrote: >>> On 05/18/2017 10:48 AM, David Hildenbrand wrote: On 18.05.2017 03:55, Thomas Huth wrote: > On 17.05.2017 18:49, David Hildenbrand wrote: >> O

Re: [Qemu-devel] [RFC PATCH] target/s390x/cpu_models: Set some additional feature bits for the "qemu" CPU

2017-05-18 Thread David Hildenbrand
On 18.05.2017 11:05, Thomas Huth wrote: > On 18.05.2017 11:00, Christian Borntraeger wrote: >> On 05/18/2017 10:48 AM, David Hildenbrand wrote: >>> On 18.05.2017 03:55, Thomas Huth wrote: On 17.05.2017 18:49, David Hildenbrand wrote: > On 17.05.2017 17:35, Thomas Huth wrote: >> Current

Re: [Qemu-devel] [RFC PATCH] target/s390x/cpu_models: Set some additional feature bits for the "qemu" CPU

2017-05-18 Thread Thomas Huth
On 18.05.2017 11:00, Christian Borntraeger wrote: > On 05/18/2017 10:48 AM, David Hildenbrand wrote: >> On 18.05.2017 03:55, Thomas Huth wrote: >>> On 17.05.2017 18:49, David Hildenbrand wrote: On 17.05.2017 17:35, Thomas Huth wrote: > Currently we only present the plain z900 feature bits

Re: [Qemu-devel] [RFC PATCH] target/s390x/cpu_models: Set some additional feature bits for the "qemu" CPU

2017-05-18 Thread Christian Borntraeger
On 05/18/2017 10:48 AM, David Hildenbrand wrote: > On 18.05.2017 03:55, Thomas Huth wrote: >> On 17.05.2017 18:49, David Hildenbrand wrote: >>> On 17.05.2017 17:35, Thomas Huth wrote: Currently we only present the plain z900 feature bits to the guest, but QEMU already emulates some additi

Re: [Qemu-devel] [RFC PATCH] target/s390x/cpu_models: Set some additional feature bits for the "qemu" CPU

2017-05-18 Thread David Hildenbrand
On 17.05.2017 18:26, Aurelien Jarno wrote: > On 2017-05-17 17:35, 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 >> de

Re: [Qemu-devel] [RFC PATCH] target/s390x/cpu_models: Set some additional feature bits for the "qemu" CPU

2017-05-18 Thread David Hildenbrand
On 18.05.2017 03:55, Thomas Huth wrote: > On 17.05.2017 18:49, David Hildenbrand wrote: >> On 17.05.2017 17:35, 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 generati

Re: [Qemu-devel] [RFC PATCH] target/s390x/cpu_models: Set some additional feature bits for the "qemu" CPU

2017-05-18 Thread Aurelien Jarno
On 2017-05-18 03:55, Thomas Huth wrote: > On 17.05.2017 18:49, David Hildenbrand wrote: > > On 17.05.2017 17:35, Thomas Huth wrote: > > 2. I would recommend to not enable STFLE for now. Why? > > > > It is/was an indication that the system is running on a z9 (and > > implicitly has the basic featur

Re: [Qemu-devel] [RFC PATCH] target/s390x/cpu_models: Set some additional feature bits for the "qemu" CPU

2017-05-17 Thread Thomas Huth
On 17.05.2017 18:26, Aurelien Jarno wrote: > On 2017-05-17 17:35, 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 >> de

Re: [Qemu-devel] [RFC PATCH] target/s390x/cpu_models: Set some additional feature bits for the "qemu" CPU

2017-05-17 Thread Thomas Huth
On 17.05.2017 18:49, David Hildenbrand wrote: > On 17.05.2017 17:35, 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 >>

Re: [Qemu-devel] [RFC PATCH] target/s390x/cpu_models: Set some additional feature bits for the "qemu" CPU

2017-05-17 Thread David Hildenbrand
On 17.05.2017 17:35, 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 checkin

Re: [Qemu-devel] [RFC PATCH] target/s390x/cpu_models: Set some additional feature bits for the "qemu" CPU

2017-05-17 Thread Aurelien Jarno
On 2017-05-17 17:35, 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 checkin

[Qemu-devel] [RFC PATCH] target/s390x/cpu_models: Set some additional feature bits for the "qemu" CPU

2017-05-17 Thread Thomas Huth
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 requi