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 4.9.2-0ubun

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

2018-08-05 Thread Adam Novak
x86/xen: Add call of speculative_store_bypass_ht_init() to PV paths". I can try cherry-picking that commit. Are there other commits in particular that might need to be pulled into the Ubuntu kernel to get it to work? On Tue, Jul 31, 2018 at 4:58 AM, Juergen Gross wrote: > On 31/07/18 03:14

Problems with Zen under Xen and recent Linux kernel improvements

2018-07-30 Thread Adam Novak
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 Ryzen 7 1700, and I am running Linux as a Xen dom0 (w