Re: Problems with Zen under Xen and recent Linux kernel improvements

2018-08-05 Thread Adam Novak
OK, I pulled that commit, 74899d92e3dc7671a8017b3146dcd4735f3b, in to the Ubuntu kernel and it seems to solve the problem. Now I just need to get Ubuntu to ship it. Thanks! On Sun, Aug 5, 2018 at 12:27 PM, Adam Novak wrote: > Sorry, I am using Xen version 4.9.2, specifically 4.9.2-0ubuntu1.

Re: Problems with Zen under Xen and recent Linux kernel improvements

2018-08-05 Thread Adam Novak
Sorry, I am using Xen version 4.9.2, specifically 4.9.2-0ubuntu1. I am seeing the bug with *kernel* version 4.15.0, and specifically Ubuntu's tag Ubuntu-4.15.0-23.25. That appears to have the "x86/cpu: Re-apply forced caps every time CPU caps are re-read" patch, but not "x86/xen: Add call of specu

Re: Problems with Zen under Xen and recent Linux kernel improvements

2018-07-31 Thread Juergen Gross
On 31/07/18 03:14, Adam Novak wrote: > Hello, > > I was advised to take this here, and to Boris Ostrovsky and Juergen > Gross, by Thomas Gleixner. > > I am having some trouble with the new speculation control code that > has been added to the Linux kernel, for AMD Zen CPUs. I am running an > AMD