From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([209.51.188.92]:42414) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1h2tnn-0000dW-Ln for qemu-devel@nongnu.org; Sun, 10 Mar 2019 04:27:24 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1h2tnl-00014W-0J for qemu-devel@nongnu.org; Sun, 10 Mar 2019 04:27:23 -0400 From: David Gibson Date: Sun, 10 Mar 2019 19:26:08 +1100 Message-Id: <20190310082703.1245-6-david@gibson.dropbear.id.au> In-Reply-To: <20190310082703.1245-1-david@gibson.dropbear.id.au> References: <20190310082703.1245-1-david@gibson.dropbear.id.au> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Subject: [Qemu-devel] [PULL 05/60] target/ppc/spapr: Add SPAPR_CAP_LARGE_DECREMENTER List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: peter.maydell@linaro.org Cc: groug@kaod.org, qemu-ppc@nongnu.org, qemu-devel@nongnu.org, lvivier@redhat.com, Suraj Jitindar Singh , David Gibson From: Suraj Jitindar Singh Add spapr_cap SPAPR_CAP_LARGE_DECREMENTER to be used to control the availability of the large decrementer for a guest. Signed-off-by: Suraj Jitindar Singh Message-Id: <20190301024317.22137-1-sjitindarsingh@gmail.com> Signed-off-by: David Gibson --- hw/ppc/spapr.c | 2 ++ hw/ppc/spapr_caps.c | 17 +++++++++++++++++ include/hw/ppc/spapr.h | 5 ++++- 3 files changed, 23 insertions(+), 1 deletion(-) diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index f7d527464c..e07e5370d3 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -2088,6 +2088,7 @@ static const VMStateDescription vmstate_spapr =3D { &vmstate_spapr_irq_map, &vmstate_spapr_cap_nested_kvm_hv, &vmstate_spapr_dtb, + &vmstate_spapr_cap_large_decr, NULL } }; @@ -4302,6 +4303,7 @@ static void spapr_machine_class_init(ObjectClass *o= c, void *data) smc->default_caps.caps[SPAPR_CAP_IBS] =3D SPAPR_CAP_BROKEN; smc->default_caps.caps[SPAPR_CAP_HPT_MAXPAGESIZE] =3D 16; /* 64kiB *= / smc->default_caps.caps[SPAPR_CAP_NESTED_KVM_HV] =3D SPAPR_CAP_OFF; + smc->default_caps.caps[SPAPR_CAP_LARGE_DECREMENTER] =3D SPAPR_CAP_OF= F; spapr_caps_add_properties(smc, &error_abort); smc->irq =3D &spapr_irq_xics; smc->dr_phb_enabled =3D true; diff --git a/hw/ppc/spapr_caps.c b/hw/ppc/spapr_caps.c index 64f98ae68d..3f90f5823e 100644 --- a/hw/ppc/spapr_caps.c +++ b/hw/ppc/spapr_caps.c @@ -390,6 +390,13 @@ static void cap_nested_kvm_hv_apply(sPAPRMachineStat= e *spapr, } } =20 +static void cap_large_decr_apply(sPAPRMachineState *spapr, + uint8_t val, Error **errp) +{ + if (val) + error_setg(errp, "No large decrementer support, try cap-large-de= cr=3Doff"); +} + sPAPRCapabilityInfo capability_table[SPAPR_CAP_NUM] =3D { [SPAPR_CAP_HTM] =3D { .name =3D "htm", @@ -468,6 +475,15 @@ sPAPRCapabilityInfo capability_table[SPAPR_CAP_NUM] = =3D { .type =3D "bool", .apply =3D cap_nested_kvm_hv_apply, }, + [SPAPR_CAP_LARGE_DECREMENTER] =3D { + .name =3D "large-decr", + .description =3D "Allow Large Decrementer", + .index =3D SPAPR_CAP_LARGE_DECREMENTER, + .get =3D spapr_cap_get_bool, + .set =3D spapr_cap_set_bool, + .type =3D "bool", + .apply =3D cap_large_decr_apply, + }, }; =20 static sPAPRCapabilities default_caps_with_cpu(sPAPRMachineState *spapr, @@ -596,6 +612,7 @@ SPAPR_CAP_MIG_STATE(cfpc, SPAPR_CAP_CFPC); SPAPR_CAP_MIG_STATE(sbbc, SPAPR_CAP_SBBC); SPAPR_CAP_MIG_STATE(ibs, SPAPR_CAP_IBS); SPAPR_CAP_MIG_STATE(nested_kvm_hv, SPAPR_CAP_NESTED_KVM_HV); +SPAPR_CAP_MIG_STATE(large_decr, SPAPR_CAP_LARGE_DECREMENTER); =20 void spapr_caps_init(sPAPRMachineState *spapr) { diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h index 59073a7579..8efc5e0779 100644 --- a/include/hw/ppc/spapr.h +++ b/include/hw/ppc/spapr.h @@ -74,8 +74,10 @@ typedef enum { #define SPAPR_CAP_HPT_MAXPAGESIZE 0x06 /* Nested KVM-HV */ #define SPAPR_CAP_NESTED_KVM_HV 0x07 +/* Large Decrementer */ +#define SPAPR_CAP_LARGE_DECREMENTER 0x08 /* Num Caps */ -#define SPAPR_CAP_NUM (SPAPR_CAP_NESTED_KVM_HV + 1) +#define SPAPR_CAP_NUM (SPAPR_CAP_LARGE_DECREMENTER + 1= ) =20 /* * Capability Values @@ -828,6 +830,7 @@ extern const VMStateDescription vmstate_spapr_cap_cfp= c; extern const VMStateDescription vmstate_spapr_cap_sbbc; extern const VMStateDescription vmstate_spapr_cap_ibs; extern const VMStateDescription vmstate_spapr_cap_nested_kvm_hv; +extern const VMStateDescription vmstate_spapr_cap_large_decr; =20 static inline uint8_t spapr_get_cap(sPAPRMachineState *spapr, int cap) { --=20 2.20.1