On Wed, Feb 10, 2016 at 07:09:11PM +0100, Thomas Huth wrote:
> The H_SET_XDABR hypercall is similar to H_SET_DABR, but also sets
> the extended DABR (DABRX) register.
>
> Signed-off-by: Thomas Huth <th...@redhat.com>
> ---
> hw/ppc/spapr_hcall.c | 22 ++++++++++++++++++++++
> 1 file changed, 22 insertions(+)
>
> diff --git a/hw/ppc/spapr_hcall.c b/hw/ppc/spapr_hcall.c
> index 6b9d512..f14f849 100644
> --- a/hw/ppc/spapr_hcall.c
> +++ b/hw/ppc/spapr_hcall.c
> @@ -366,6 +366,27 @@ static target_ulong h_set_dabr(PowerPCCPU *cpu,
> sPAPRMachineState *spapr,
> return H_SUCCESS;
> }
>
> +static target_ulong h_set_xdabr(PowerPCCPU *cpu, sPAPRMachineState *spapr,
> + target_ulong opcode, target_ulong *args)
> +{
> + CPUState *cs = CPU(cpu);
> + target_ulong dabrx = args[1];
> +
> + if (!has_spr(cpu, SPR_DABR) || !has_spr(cpu, SPR_DABRX)) {
> + return H_HARDWARE;
> + }
> +
> + if ((dabrx & ~0xfULL) != 0 || (dabrx & H_DABRX_HYPERVISOR) != 0
> + || (dabrx & (H_DABRX_KERNEL | H_DABRX_USER)) == 0) {
> + return H_PARAMETER;
> + }
> +
> + set_spr(cs, SPR_DABRX, dabrx, -1L);
> + set_spr(cs, SPR_DABR, args[0], -1L);
Same comments for set_spr().
> +
> + return H_SUCCESS;
> +}
> +
> #define FLAGS_REGISTER_VPA 0x0000200000000000ULL
> #define FLAGS_REGISTER_DTL 0x0000400000000000ULL
> #define FLAGS_REGISTER_SLBSHADOW 0x0000600000000000ULL
> @@ -1024,6 +1045,7 @@ static void hypercall_register_types(void)
> /* processor register resource access h-calls */
> spapr_register_hypercall(H_SET_SPRG0, h_set_sprg0);
> spapr_register_hypercall(H_SET_DABR, h_set_dabr);
> + spapr_register_hypercall(H_SET_XDABR, h_set_xdabr);
> spapr_register_hypercall(H_SET_MODE, h_set_mode);
>
> /* "debugger" hcalls (also used by SLOF). Note: We do -not- differenciate
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
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