[CentOS-virt] Xen 4.6.6-9 (with XPTI meltdown mitigation) packages making their way to centos-virt-xen-testing

Thu Jan 18 19:36:57 UTC 2018
Peter Peltonen <peter.peltonen at gmail.com>

Hi Nathan,

On Thu, Jan 18, 2018 at 9:31 PM, Nathan March <nathan at gt.net> wrote:
>> -----Original Message-----
>> As there are now quite many options to choose from, what would be the
>> best option performance wise for running 32bit domUs under xen-4.6?
>> Best,
>> Peter
> It's worth taking a look at the table in the latest XSA, it helps clarify a
> fair bit:
> https://xenbits.xen.org/xsa/advisory-254.html

thanks for pointing this out, but there is a disclaimer:

"Everything in this section applies to 64-bit PV x86 guests only."

It also reads in the advisory "32-bit PV guests cannot exploit SP3"

So I am wondering if I just "yum update" will I get some fixes I do
not need that will slow my guests down?