diff options
| author | Suraj Jitindar Singh <sjitindarsingh@gmail.com> | 2018-01-19 16:00:04 +1100 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2018-01-29 14:24:55 +1100 |
| commit | 4be8d4e7d935fc8919d61f53a0f0fb7230052bb3 (patch) | |
| tree | 9f2fcd8392522ea52a20b7e2392e5bf8f244cd47 | |
| parent | 09114fd8179977e4157b36aab2e3d68eaf08adca (diff) | |
target/ppc/spapr_caps: Add new tristate cap safe_indirect_branch
Add new tristate cap cap-ibs to represent the indirect branch
serialisation capability.
Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
| -rw-r--r-- | hw/ppc/spapr.c | 2 | ||||
| -rw-r--r-- | hw/ppc/spapr_caps.c | 21 | ||||
| -rw-r--r-- | include/hw/ppc/spapr.h | 5 |
3 files changed, 27 insertions, 1 deletions
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index 57433e7a6e..32a876be56 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -1793,6 +1793,7 @@ static const VMStateDescription vmstate_spapr = { &vmstate_spapr_cap_dfp, &vmstate_spapr_cap_cfpc, &vmstate_spapr_cap_sbbc, + &vmstate_spapr_cap_ibs, NULL } }; @@ -3885,6 +3886,7 @@ static void spapr_machine_class_init(ObjectClass *oc, void *data) smc->default_caps.caps[SPAPR_CAP_DFP] = SPAPR_CAP_ON; smc->default_caps.caps[SPAPR_CAP_CFPC] = SPAPR_CAP_BROKEN; smc->default_caps.caps[SPAPR_CAP_SBBC] = SPAPR_CAP_BROKEN; + smc->default_caps.caps[SPAPR_CAP_IBS] = SPAPR_CAP_BROKEN; spapr_caps_add_properties(smc, &error_abort); } diff --git a/hw/ppc/spapr_caps.c b/hw/ppc/spapr_caps.c index ce1f74f26d..62efdaee38 100644 --- a/hw/ppc/spapr_caps.c +++ b/hw/ppc/spapr_caps.c @@ -202,6 +202,17 @@ static void cap_safe_bounds_check_apply(sPAPRMachineState *spapr, uint8_t val, } } +static void cap_safe_indirect_branch_apply(sPAPRMachineState *spapr, + uint8_t val, Error **errp) +{ + if (tcg_enabled() && val) { + /* TODO - for now only allow broken for TCG */ + error_setg(errp, "Requested safe indirect branch capability level not supported by tcg, try a different value for cap-ibs"); + } else if (kvm_enabled() && (val > kvmppc_get_cap_safe_indirect_branch())) { + error_setg(errp, "Requested safe indirect branch capability level not supported by kvm, try a different value for cap-ibs"); + } +} + #define VALUE_DESC_TRISTATE " (broken, workaround, fixed)" sPAPRCapabilityInfo capability_table[SPAPR_CAP_NUM] = { @@ -250,6 +261,15 @@ sPAPRCapabilityInfo capability_table[SPAPR_CAP_NUM] = { .type = "string", .apply = cap_safe_bounds_check_apply, }, + [SPAPR_CAP_IBS] = { + .name = "ibs", + .description = "Indirect Branch Serialisation" VALUE_DESC_TRISTATE, + .index = SPAPR_CAP_IBS, + .get = spapr_cap_get_tristate, + .set = spapr_cap_set_tristate, + .type = "string", + .apply = cap_safe_indirect_branch_apply, + }, }; static sPAPRCapabilities default_caps_with_cpu(sPAPRMachineState *spapr, @@ -357,6 +377,7 @@ SPAPR_CAP_MIG_STATE(vsx, VSX); SPAPR_CAP_MIG_STATE(dfp, DFP); SPAPR_CAP_MIG_STATE(cfpc, CFPC); SPAPR_CAP_MIG_STATE(sbbc, SBBC); +SPAPR_CAP_MIG_STATE(ibs, IBS); void spapr_caps_reset(sPAPRMachineState *spapr) { diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h index c65be62e92..549d7a4134 100644 --- a/include/hw/ppc/spapr.h +++ b/include/hw/ppc/spapr.h @@ -64,8 +64,10 @@ typedef enum { #define SPAPR_CAP_CFPC 0x03 /* Speculation Barrier Bounds Checking */ #define SPAPR_CAP_SBBC 0x04 +/* Indirect Branch Serialisation */ +#define SPAPR_CAP_IBS 0x05 /* Num Caps */ -#define SPAPR_CAP_NUM (SPAPR_CAP_SBBC + 1) +#define SPAPR_CAP_NUM (SPAPR_CAP_IBS + 1) /* * Capability Values @@ -785,6 +787,7 @@ extern const VMStateDescription vmstate_spapr_cap_vsx; extern const VMStateDescription vmstate_spapr_cap_dfp; extern const VMStateDescription vmstate_spapr_cap_cfpc; extern const VMStateDescription vmstate_spapr_cap_sbbc; +extern const VMStateDescription vmstate_spapr_cap_ibs; static inline uint8_t spapr_get_cap(sPAPRMachineState *spapr, int cap) { |