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RISC-V: KVM: Add Svade and Svadu Extensions Support for Guest/VM
We extend the KVM ISA extension ONE_REG interface to allow VMM tools to detect and enable Svade and Svadu extensions for Guest/VM. Since the henvcfg.ADUE is read-only zero if the menvcfg.ADUE is zero, the Svadu extension is available for Guest/VM and the Svade extension is allowed to disabledonly when arch_has_hw_pte_young() is true. Signed-off-by: Yong-Xuan Wang <[email protected]> Reviewed-by: Andrew Jones <[email protected]> Reviewed-by: Samuel Holland <[email protected]> Acked-by: Palmer Dabbelt <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Anup Patel <[email protected]>
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