[PATCH v8 35/43] arm64: RME: Set breakpoint parameters through SET_ONE_REG

[Suzuki K Poulose]

On 16/04/2025 14:41, Steven Price wrote:
> From: Jean-Philippe Brucker <jean-philippe at linaro.org>
> 
> Allow userspace to configure the number of breakpoints and watchpoints
> of a Realm VM through KVM_SET_ONE_REG ID_AA64DFR0_EL1.
> 
> The KVM sys_reg handler checks the user value against the maximum value
> given by RMM (arm64_check_features() gets it from the
> read_sanitised_id_aa64dfr0_el1() reset handler).
> 
> Userspace discovers that it can write these fields by issuing a
> KVM_ARM_GET_REG_WRITABLE_MASKS ioctl.
> 
> Signed-off-by: Jean-Philippe Brucker <jean-philippe at linaro.org>
> Signed-off-by: Steven Price <steven.price at arm.com>
> Reviewed-by: Gavin Shan <gshan at redhat.com>

Reviewed-by: Suzuki K Poulose <suzuki.poulose at arm.com>