On 12/1/19 12:20 PM, Marc Zyngier wrote:
> HCR_EL2.TID1 mandates that access from EL1 to REVIDR_EL1, AIDR_EL1
> (and their 32bit equivalents) as well as TCMTR, TLBTR are trapped
> to EL2. QEMU ignores it, making it harder for a hypervisor to
> virtualize the HW (though to be fair, no known hypervisor actually
> cares).
> 
> Do the right thing by trapping to EL2 if HCR_EL2.TID1 is set.
> 
> Reviewed-by: Edgar E. Iglesias <edgar.igles...@xilinx.com>
> Signed-off-by: Marc Zyngier <m...@kernel.org>
> ---
>  target/arm/helper.c | 36 ++++++++++++++++++++++++++++++++----
>  1 file changed, 32 insertions(+), 4 deletions(-)

Reviewed-by: Richard Henderson <richard.hender...@linaro.org>


r~

_______________________________________________
kvmarm mailing list
kvmarm@lists.cs.columbia.edu
https://lists.cs.columbia.edu/mailman/listinfo/kvmarm

Reply via email to