[PATCH] KVM: arm64: remove all traces of the ThumbEE registers

[Peter Maydell]

On 15 September 2015 at 17:15, Will Deacon <will.deacon at arm.com> wrote:
> Although the ThumbEE registers and traps were present in earlier
> versions of the v8 architecture, it was retrospectively removed and so
> we can do the same.
>
> Cc: Marc Zyngier <marc.zyngier at arm.com>
> Signed-off-by: Will Deacon <will.deacon at arm.com>

> diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
> index b41607d270ac..6c35e49757d8 100644
> --- a/arch/arm64/kvm/sys_regs.c
> +++ b/arch/arm64/kvm/sys_regs.c
> @@ -539,13 +539,6 @@ static const struct sys_reg_desc sys_reg_descs[] = {
>         { Op0(0b10), Op1(0b000), CRn(0b0111), CRm(0b1110), Op2(0b110),
>           trap_dbgauthstatus_el1 },
>
> -       /* TEECR32_EL1 */
> -       { Op0(0b10), Op1(0b010), CRn(0b0000), CRm(0b0000), Op2(0b000),
> -         NULL, reset_val, TEECR32_EL1, 0 },
> -       /* TEEHBR32_EL1 */
> -       { Op0(0b10), Op1(0b010), CRn(0b0001), CRm(0b0000), Op2(0b000),
> -         NULL, reset_val, TEEHBR32_EL1, 0 },
> -

I guess this is a VM migration compatibility break between kernels
without this patch and kernels with it? I think that's OK at this
point, but it would be nice to mention it in the commit message.

thanks
-- PMM