Re: [PATCH v10 10/18] KVM: arm64: Optimise FPSIMD handling to reduce guest/host thrashing

On Thu, May 24, 2018 at 11:09:02AM +0100, Alex Bennée wrote: > > Dave Martin writes: > > > This patch refactors KVM to align the host and guest FPSIMD > > save/restore logic with each other for arm64. This reduces the > > number of redundant save/restore operations that must occur, and > > redu

Re: [PATCH v10 10/18] KVM: arm64: Optimise FPSIMD handling to reduce guest/host thrashing

Dave Martin writes: > This patch refactors KVM to align the host and guest FPSIMD > save/restore logic with each other for arm64. This reduces the > number of redundant save/restore operations that must occur, and > reduces the common-case IRQ blackout time during guest exit storms > by saving

[PATCH v10 10/18] KVM: arm64: Optimise FPSIMD handling to reduce guest/host thrashing

This patch refactors KVM to align the host and guest FPSIMD save/restore logic with each other for arm64. This reduces the number of redundant save/restore operations that must occur, and reduces the common-case IRQ blackout time during guest exit storms by saving the host state lazily and optimis