Re: [PATCH] S/390: Disable prediction of indirect branches

2018-02-08 Thread H.J. Lu
On Thu, Feb 8, 2018 at 11:57 AM, H.J. Lu wrote: > On Thu, Feb 8, 2018 at 4:17 AM, Andreas Krebbel > wrote: >> On 02/08/2018 12:33 PM, Richard Biener wrote: >>> On Wed, Feb 7, 2018 at 1:01 PM, Andreas Krebbel >>> wrote: This patch implements GCC support for mitigating vulnerability CVE-

Re: [PATCH] S/390: Disable prediction of indirect branches

2018-02-08 Thread H.J. Lu
On Thu, Feb 8, 2018 at 4:17 AM, Andreas Krebbel wrote: > On 02/08/2018 12:33 PM, Richard Biener wrote: >> On Wed, Feb 7, 2018 at 1:01 PM, Andreas Krebbel >> wrote: >>> This patch implements GCC support for mitigating vulnerability >>> CVE-2017-5715 known as Spectre #2 on IBM Z. >>> >>> In order t

Re: [PATCH] S/390: Disable prediction of indirect branches

2018-02-08 Thread Andreas Krebbel
On 02/08/2018 12:33 PM, Richard Biener wrote: > On Wed, Feb 7, 2018 at 1:01 PM, Andreas Krebbel > wrote: >> This patch implements GCC support for mitigating vulnerability >> CVE-2017-5715 known as Spectre #2 on IBM Z. >> >> In order to disable prediction of indirect branches the implementation >>

Re: [PATCH] S/390: Disable prediction of indirect branches

2018-02-08 Thread Richard Biener
On Wed, Feb 7, 2018 at 1:01 PM, Andreas Krebbel wrote: > This patch implements GCC support for mitigating vulnerability > CVE-2017-5715 known as Spectre #2 on IBM Z. > > In order to disable prediction of indirect branches the implementation > makes use of an IBM Z specific feature - the execute in