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target/arm: Add VHE system register redirection and aliasing
Several of the EL1/0 registers are redirected to the EL2 version when in EL2 and HCR_EL2.E2H is set. Many of these registers have side effects. Link together the two ARMCPRegInfo structures after they have been properly instantiated. Install common dispatch routines to all of the relevant registers. The same set of registers that are redirected also have additional EL12/EL02 aliases created to access the original register that was redirected. Omit the generic timer registers from redirection here, because we'll need multiple kinds of redirection from both EL0 and EL2. Tested-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20200206105448.4726-29-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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