Re: [PATCH v3] arm64: KVM: Optimize __guest_enter/exit() to save a few instructions

On Tue, Aug 30, 2016 at 09:08:32PM -0500, Shanker Donthineni wrote: > We are doing an unnecessary stack push/pop operation when restoring > the guest registers x0-x18 in __guest_enter(). This patch saves the > two instructions by using x18 as a base register. No need to store > the vcpu context poi

[PATCH v3] arm64: KVM: Optimize __guest_enter/exit() to save a few instructions

We are doing an unnecessary stack push/pop operation when restoring the guest registers x0-x18 in __guest_enter(). This patch saves the two instructions by using x18 as a base register. No need to store the vcpu context pointer in stack because it is redundant, the same information is available in