Re: [PATCH v2] KVM: arm64: Remove host_cpu_context member from vcpu structure

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi Andrew,

On 2020-06-08 15:51, Andrew Scull wrote:
On Mon, Jun 08, 2020 at 09:56:57AM +0100, Marc Zyngier wrote:
For very long, we have kept this pointer back to the per-cpu
host state, despite having working per-cpu accessors at EL2
for some time now.

Recent investigations have shown that this pointer is easy
to abuse in preemptible context, which is a sure sign that
it would better be gone. Not to mention that a per-cpu
pointer is faster to access at all times.

Helps to make the references to `kvm_host_data` clearer with there now
being just one way to get to it and shows that it is scoped to the
current CPU. A good change IMO!

Thanks! Can I take this as a Reviewed-by or Acked-by tag? Just let me know.

Cheers,

         M.
--
Jazz is not dead. It just smells funny...



[Index of Archives]     [KVM ARM]     [KVM ia64]     [KVM ppc]     [Virtualization Tools]     [Spice Development]     [Libvirt]     [Libvirt Users]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite Questions]     [Linux Kernel]     [Linux SCSI]     [XFree86]

  Powered by Linux