Re: [PATCH v4 2/4] RISC-V: Add riscv_isa reprensenting ISA features common across CPUs

[Christoph Hellwig]

On Fri, Aug 02, 2019 at 09:27:21PM -0700, Atish Patra wrote:
> From: Anup Patel <anup.patel@xxxxxxx>
> 
> This patch adds riscv_isa integer to represent ISA features common
> across all CPUs. The riscv_isa is not same as elf_hwcap because
> elf_hwcap will only have ISA features relevant for user-space apps
> whereas riscv_isa will have ISA features relevant to both kernel
> and user-space apps.
> 
> One of the use case is KVM hypervisor where riscv_isa will be used
> to do following operations:

Please add this to the kvm series.  Right now this is just dead code.