Re: [RFC PATCH v2 07/19] RISC-V: KVM: Implement KVM_GET_ONE_REG/KVM_SET_ONE_REG ioctls
From: Paolo Bonzini
Date: Mon Aug 05 2019 - 08:01:52 EST
On 05/08/19 13:56, Anup Patel wrote:
> We will certainly explore sync_regs interface. Reducing exits to user-space
> will definitely help.
sync_regs does not reduce exits to userspace, it reduces ioctls from
userspace but there is a real benefit only if userspace actually makes
many syscalls for each vmexit.
Paolo