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5b9e41321b
Some SBI extensions have state that needs to be saved / restored when migrating the VM. Provide a get/set-one-reg register type for SBI extension registers. Each SBI extension that uses this type will have its own subtype. There are currently no subtypes defined. The next patch introduces the first one. Reviewed-by: Anup Patel <anup@brainfault.org> Reviewed-by: Atish Patra <atishp@rivosinc.com> Signed-off-by: Andrew Jones <ajones@ventanamicro.com> Signed-off-by: Anup Patel <anup@brainfault.org>