Re: [Xen-devel] [stable-4.11] Heads-up: c719519 (x86/SMP: don't try to stop already stopped CPUs) causes 100% kexec/kdump failure

2019-10-29 Thread Jan Beulich
On 29.10.2019 12:29, Sergey Dyasli wrote: > On 28/10/2019 17:30, Stonehouse, Robert wrote: >> This is a heads-up as I have observed that the following commit (backported >> onto an Amazon 4.11 tree) causes kexec (and hence kdump) to fail. >> >> commit

Re: [Xen-devel] [stable-4.11] Heads-up: c719519 (x86/SMP: don't try to stop already stopped CPUs) causes 100% kexec/kdump failure

2019-10-29 Thread Sergey Dyasli
On 28/10/2019 17:30, Stonehouse, Robert wrote: > This is a heads-up as I have observed that the following commit (backported > onto an Amazon 4.11 tree) causes kexec (and hence kdump) to fail. > > commit c719519a4183d0630121f6abeba420f49dbc3229 > Author: Jan Beulich > AuthorDate: Fri

Re: [Xen-devel] [stable-4.11] Heads-up: c719519 (x86/SMP: don't try to stop already stopped CPUs) causes 100% kexec/kdump failure

2019-10-29 Thread Dietmar Hahn
Hi, Am Montag, 28. Oktober 2019, 18:30:12 CET schrieb Stonehouse, Robert: > This is a heads-up as I have observed that the following commit (backported > onto an Amazon 4.11 tree) causes kexec (and hence kdump) to fail. > > commit c719519a4183d0630121f6abeba420f49dbc3229 > Author: Jan

Re: [Xen-devel] [stable-4.11] Heads-up: c719519 (x86/SMP: don't try to stop already stopped CPUs) causes 100% kexec/kdump failure

2019-10-29 Thread Jan Beulich
On 28.10.2019 18:30, Stonehouse, Robert wrote: > Reverting one hunk via the following commit fixes things for me (this is an > experiment and not at all a proposed fix) > > --- a/xen/arch/x86/smp.c > +++ b/xen/arch/x86/smp.c > @@ -303,15 +303,15 @@ static void stop_this_cpu(void *dummy)

[Xen-devel] [stable-4.11] Heads-up: c719519 (x86/SMP: don't try to stop already stopped CPUs) causes 100% kexec/kdump failure

2019-10-28 Thread Stonehouse, Robert
This is a heads-up as I have observed that the following commit (backported onto an Amazon 4.11 tree) causes kexec (and hence kdump) to fail. commit c719519a4183d0630121f6abeba420f49dbc3229 Author: Jan Beulich AuthorDate: Fri Jul 5 10:32:41 2019 +0200 Commit: Jan Beulich CommitDate: