Re: [PATCH v2 1/5] target/arm: Honor HCR_EL2.TID2 trapping requirements

[Richard Henderson]

On 12/1/19 12:20 PM, Marc Zyngier wrote:
> HCR_EL2.TID2 mandates that access from EL1 to CTR_EL0, CCSIDR_EL1,
> CCSIDR2_EL1, CLIDR_EL1, CSSELR_EL1 are trapped to EL2, and QEMU
> completely ignores it, making it impossible for hypervisors to
> virtualize the cache hierarchy.
> 
> Do the right thing by trapping to EL2 if HCR_EL2.TID2 is set.
> 
> Signed-off-by: Marc Zyngier <address@hidden>
> ---
>  target/arm/helper.c | 31 +++++++++++++++++++++++++++----
>  1 file changed, 27 insertions(+), 4 deletions(-)

Reviewed-by: Richard Henderson <address@hidden>


r~