On Mon, Mar 14, 2016 at 05:56:32PM +0100, Cédric Le Goater wrote: > From: Benjamin Herrenschmidt <b...@kernel.crashing.org> > > Those are HV writeable, so we provide a dummy write. We eventually need > to provide a better emulation but for now this will get us going. > > We also make them non-user readable as per the architecture. > > Signed-off-by: Benjamin Herrenschmidt <b...@kernel.crashing.org>
Reviewed-by: David Gibson <da...@gibson.dropbear.id.au>
But expecting it for 2.7, not 2.6.
> ---
> target-ppc/translate_init.c | 25 +++++++++++++++++--------
> 1 file changed, 17 insertions(+), 8 deletions(-)
>
> diff --git a/target-ppc/translate_init.c b/target-ppc/translate_init.c
> index 7a399b97bc6f..10f67136b609 100644
> --- a/target-ppc/translate_init.c
> +++ b/target-ppc/translate_init.c
> @@ -293,6 +293,13 @@ static void spr_read_purr (DisasContext *ctx, int gprn,
> int sprn)
> {
> gen_helper_load_purr(cpu_gpr[gprn], cpu_env);
> }
> +
> +__attribute__ ((unused))
> +static void spr_write_purr(DisasContext *ctx, int gprn, int sprn)
> +{
> + /* Temporary placeholder */
> +}
> +
> #endif
> #endif
>
> @@ -7828,14 +7835,16 @@ static void gen_spr_book3s_purr(CPUPPCState *env)
> {
> #if !defined(CONFIG_USER_ONLY)
> /* PURR & SPURR: Hack - treat these as aliases for the TB for now */
> - spr_register_kvm(env, SPR_PURR, "PURR",
> - &spr_read_purr, SPR_NOACCESS,
> - &spr_read_purr, SPR_NOACCESS,
> - KVM_REG_PPC_PURR, 0x00000000);
> - spr_register_kvm(env, SPR_SPURR, "SPURR",
> - &spr_read_purr, SPR_NOACCESS,
> - &spr_read_purr, SPR_NOACCESS,
> - KVM_REG_PPC_SPURR, 0x00000000);
> + spr_register_kvm_hv(env, SPR_PURR, "PURR",
> + SPR_NOACCESS, SPR_NOACCESS,
> + &spr_read_purr, SPR_NOACCESS,
> + &spr_read_purr, &spr_write_purr,
> + KVM_REG_PPC_PURR, 0x00000000);
> + spr_register_kvm_hv(env, SPR_SPURR, "SPURR",
> + SPR_NOACCESS, SPR_NOACCESS,
> + &spr_read_purr, SPR_NOACCESS,
> + &spr_read_purr, &spr_write_purr,
> + KVM_REG_PPC_SPURR, 0x00000000);
> #endif
> }
>
--
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
signature.asc
Description: PGP signature
