riscv: Handle SBI DBCN calls from Guest/VM

The new SBI DBCN functions are forwarded by in-kernel KVM RISC-V module
to user-space so let us handle these calls in kvm_cpu_riscv_sbi() function.

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Link: https://lore.kernel.org/r/20231128145628.413414-11-apatel@ventanamicro.com
Signed-off-by: Will Deacon <will@kernel.org>
3 files changed