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Re: [Xen-devel] Ongoing/future speculative mitigation work
- To: "Andrew Cooper" <andrew.cooper3@xxxxxxxxxx>
- From: "Jan Beulich" <JBeulich@xxxxxxxx>
- Date: Fri, 26 Oct 2018 03:16:15 -0600
- Cc: Martin Pohlack <mpohlack@xxxxxxxxx>, Julien Grall <julien.grall@xxxxxxx>, Joao Martins <joao.m.martins@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Mihai Dontu <mdontu@xxxxxxxxxxxxxxx>, Marek Marczykowski <marmarek@xxxxxxxxxxxxxxxxxxxxxx>, Anthony Liguori <aliguori@xxxxxxxxxx>, uwed@xxxxxxxxx, Lars Kurth <lars.kurth@xxxxxxxxxx>, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>, Ross Philipson <ross.philipson@xxxxxxxxxx>, george.dunlap@xxxxxxxxxx, Dario Faggioli <dfaggioli@xxxxxxxx>, Matt Wilson <msw@xxxxxxxxxx>, Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>, Juergen Gross <jgross@xxxxxxxx>, Sergey Dyasli <sergey.dyasli@xxxxxxxxxx>, Wei Liu <wei.liu2@xxxxxxxxxx>, George Dunlap <George.Dunlap@xxxxxxxxxxxxx>, Xen-devel List <xen-devel@xxxxxxxxxxxxx>, Daniel Kiper <daniel.kiper@xxxxxxxxxx>, David Woodhouse <dwmw@xxxxxxxxxxxx>, Roger Pau Monne <roger.pau@xxxxxxxxxx>
- Delivery-date: Fri, 26 Oct 2018 09:17:23 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
>>> On 25.10.18 at 18:29, <andrew.cooper3@xxxxxxxxxx> wrote:
> A split xenheap model means that data pertaining to other guests isn't
> mapped in the context of this vcpu, so cannot be brought into the cache.
It was not clear to me from Wei's original mail that talk here is
about "split" in a sense of "per-domain"; I was assuming the
CONFIG_SEPARATE_XENHEAP mode instead.
Jan
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