lists.openwall.net   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  linux-hardening  linux-cve-announce  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: Thu, 14 Mar 2024 19:31:30 +0100
From: Paolo Bonzini <pbonzini@...hat.com>
To: Sean Christopherson <seanjc@...gle.com>
Cc: kvm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [GIT PULL] KVM: x86: MMU changes for 6.9

On Fri, Mar 8, 2024 at 11:37 PM Sean Christopherson <seanjc@...gle.com> wrote:
>
>  - Zap TDP MMU roots at 4KiB granularity to minimize the delay in yielding if
>    a reschedule is needed, e.g. if a high priority task needs to run.  Because
>    KVM doesn't support yielding in the middle of processing a zapped non-leaf
>    SPTE, zapping at 1GiB granularity can result in multi-millisecond lag when
>    attempting to schedule in a high priority.
>

Would 2 MiB provide a nice middle ground?

Paolo


Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ