lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:   Fri, 8 Feb 2019 16:38:09 -0500
From:   "Michael S. Tsirkin" <>
To:     Nitesh Narayan Lal <>
Cc:     Alexander Duyck <>,
        kvm list <>,
        LKML <>,
        Paolo Bonzini <>,,,,
        Yang Zhang <>,
        Rik van Riel <>,,, Konrad Rzeszutek Wilk <>,, Andrea Arcangeli <>
Subject: Re: [RFC][Patch v8 6/7] KVM: Enables the kernel to isolate and
 report free pages

On Fri, Feb 08, 2019 at 03:41:55PM -0500, Nitesh Narayan Lal wrote:
> >> I am also planning to try Michael's suggestion of using MAX_ORDER - 1.
> >> However I am still thinking about a workload which I can use to test its
> >> effectiveness.
> > You might want to look at doing something like min(MAX_ORDER - 1,
> > HUGETLB_PAGE_ORDER). I know for x86 a 2MB page is the upper limit for
> > THP which is the most likely to be used page size with the guest.
> Sure, thanks for the suggestion.

Given current hinting in balloon is MAX_ORDER I'd say
share code. If you feel a need to adjust down the road,
adjust both of them with actual testing showing gains.


Powered by blists - more mailing lists