Re: [Xen-devel] [PATCH] xen: fix pv domain on amd in 4.9 stable branch

2018-05-30 Thread Woodhouse, David
On Wed, 2018-05-30 at 11:46 +0200, Greg KH wrote: > On Wed, May 30, 2018 at 11:33:22AM +0200, Juergen Gross wrote: > > > > On 30/05/18 10:33, Greg KH wrote: > > > > > > On Tue, May 29, 2018 at 03:11:36PM +0200, Juergen Gross wrote: > > > > > > > > Commit 944e0fc51a89c9827b98813d65dc083274777c7f

Re: [Xen-devel] [PATCH] xen: fix pv domain on amd in 4.9 stable branch

2018-05-30 Thread Greg KH
On Wed, May 30, 2018 at 11:33:22AM +0200, Juergen Gross wrote: > On 30/05/18 10:33, Greg KH wrote: > > On Tue, May 29, 2018 at 03:11:36PM +0200, Juergen Gross wrote: > >> Commit 944e0fc51a89c9827b98813d65dc083274777c7f ("x86/amd: don't set > >> X86_BUG_SYSRET_SS_ATTRS when running under Xen") break

Re: [Xen-devel] [PATCH] xen: fix pv domain on amd in 4.9 stable branch

2018-05-30 Thread Juergen Gross
On 30/05/18 10:33, Greg KH wrote: > On Tue, May 29, 2018 at 03:11:36PM +0200, Juergen Gross wrote: >> Commit 944e0fc51a89c9827b98813d65dc083274777c7f ("x86/amd: don't set >> X86_BUG_SYSRET_SS_ATTRS when running under Xen") breaks Xen pv-domains >> on AMD processors, as a prerequisite patch from ups

Re: [Xen-devel] [PATCH] xen: fix pv domain on amd in 4.9 stable branch

2018-05-30 Thread Greg KH
On Tue, May 29, 2018 at 03:11:36PM +0200, Juergen Gross wrote: > Commit 944e0fc51a89c9827b98813d65dc083274777c7f ("x86/amd: don't set > X86_BUG_SYSRET_SS_ATTRS when running under Xen") breaks Xen pv-domains > on AMD processors, as a prerequisite patch from upstream wasn't added > to 4.9. What is t

[Xen-devel] [PATCH] xen: fix pv domain on amd in 4.9 stable branch

2018-05-29 Thread Juergen Gross
Commit 944e0fc51a89c9827b98813d65dc083274777c7f ("x86/amd: don't set X86_BUG_SYSRET_SS_ATTRS when running under Xen") breaks Xen pv-domains on AMD processors, as a prerequisite patch from upstream wasn't added to 4.9. Fix that by adding the prerequisite setting of X86_FEATURE_XENPV to the Xen pv e