>>> On 11.04.18 at 13:53, <mingo@xxxxxxxxxx> wrote: > * Jan Beulich <JBeulich@xxxxxxxx> wrote: > >> Additionally, x86 maintainers: is there a particular reason this (or >> any functionally equivalent patch) isn't upstream yet? As indicated >> before, I had not been able to find any discussion, and hence I >> see no reason why this is a patch we effectively carry privately in >> our distro branches (and likely other distros do so too). > > The patch was merged 6 weeks ago and is now upstream: > > 71c208dd54ab: x86/xen: Zero MSR_IA32_SPEC_CTRL before suspend I'm sorry, but no, this isn't the patch I was inquiring about. Instead I'm wondering of the disposition of the patch disabling IBRS around a CPU going idle. Jan