[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Xen-devel] Reducing or removing direct map from xen (was Re: Ongoing/future speculative mitigation work)
- To: "Wei Liu" <wei.liu2@xxxxxxxxxx>
- From: "Jan Beulich" <JBeulich@xxxxxxxx>
- Date: Fri, 22 Feb 2019 06:27:30 -0700
- 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>, xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>, uwed@xxxxxxxxx, Lars Kurth <lars.kurth@xxxxxxxxxx>, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>, Ross Philipson <ross.philipson@xxxxxxxxxx>, Dario Faggioli <dfaggioli@xxxxxxxx>, Matt Wilson <msw@xxxxxxxxxx>, Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>, Juergen Gross <jgross@xxxxxxxx>, Sergey Dyasli <sergey.dyasli@xxxxxxxxxx>, George Dunlap <George.Dunlap@xxxxxxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Daniel Kiper <daniel.kiper@xxxxxxxxxx>, David Woodhouse <dwmw@xxxxxxxxxxxx>, Roger Pau Monne <roger.pau@xxxxxxxxxx>
- Delivery-date: Fri, 22 Feb 2019 13:27:37 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
>>> On 22.02.19 at 14:24, wrote:
>>>> On 22.02.19 at 14:19, <wei.liu2@xxxxxxxxxx> wrote:
> > I have only realised this today: essentially we will end up implementing
> > xmalloc with vmalloc, which at the moment depends on xmalloc to allocate
> > the array of mfns.
>
> Which (potential locking issues aside) is not a problem, as the size of
> the MFN array will reduce logarithmically, until it eventually is no larger
> than a page anymore.
Err, not logarithmically, but you get the point.
Jan
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/xen-devel
|
