Re: [Xen-devel] [PATCH] x86/xen: zero MSR_IA32_SPEC_CTRL before suspend

* Jan Beulich JBeulich@suse.com wrote:

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On 11.04.18 at 13:53, mingo@kernel.org wrote:

• Jan Beulich JBeulich@suse.com wrote:

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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.

Got any specific link or subject line for that submission?

Thanks,

Ingo