Re: [PATCH 3/6] s390: add options to change branch prediction behaviour for the kernel

2018-01-18 Thread QingFeng Hao
在 2018/1/17 17:48, Martin Schwidefsky 写道: Add the PPA instruction to the system entry and exit path to switch the kernel to a different branch prediction behaviour. The instructions are added via CPU alternatives and can be disabled with the "nospec" or the "nobp=0" kernel parameter. If the

Re: [PATCH 3/6] s390: add options to change branch prediction behaviour for the kernel

2018-01-18 Thread QingFeng Hao
在 2018/1/17 17:48, Martin Schwidefsky 写道: Add the PPA instruction to the system entry and exit path to switch the kernel to a different branch prediction behaviour. The instructions are added via CPU alternatives and can be disabled with the "nospec" or the "nobp=0" kernel parameter. If the

Re: [PATCH 3/6] s390: add options to change branch prediction behaviour for the kernel

2018-01-18 Thread Cornelia Huck
On Wed, 17 Jan 2018 10:48:36 +0100 Martin Schwidefsky wrote: > Add the PPA instruction to the system entry and exit path to switch > the kernel to a different branch prediction behaviour. The instructions > are added via CPU alternatives and can be disabled with the

Re: [PATCH 3/6] s390: add options to change branch prediction behaviour for the kernel

2018-01-18 Thread Cornelia Huck
On Wed, 17 Jan 2018 10:48:36 +0100 Martin Schwidefsky wrote: > Add the PPA instruction to the system entry and exit path to switch > the kernel to a different branch prediction behaviour. The instructions > are added via CPU alternatives and can be disabled with the "nospec" > or the "nobp=0"

[PATCH 3/6] s390: add options to change branch prediction behaviour for the kernel

2018-01-17 Thread Martin Schwidefsky
Add the PPA instruction to the system entry and exit path to switch the kernel to a different branch prediction behaviour. The instructions are added via CPU alternatives and can be disabled with the "nospec" or the "nobp=0" kernel parameter. If the default behaviour selected with

[PATCH 3/6] s390: add options to change branch prediction behaviour for the kernel

2018-01-17 Thread Martin Schwidefsky
Add the PPA instruction to the system entry and exit path to switch the kernel to a different branch prediction behaviour. The instructions are added via CPU alternatives and can be disabled with the "nospec" or the "nobp=0" kernel parameter. If the default behaviour selected with