diff options
| -rw-r--r-- | hw/ppc/spapr.c | 12 | ||||
| -rw-r--r-- | hw/ppc/spapr_caps.c | 56 | ||||
| -rw-r--r-- | include/hw/ppc/spapr.h | 4 |
3 files changed, 71 insertions, 1 deletions
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index 7818650..70b150b 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -63,6 +63,7 @@ #include "hw/virtio/vhost-scsi-common.h" #include "exec/address-spaces.h" +#include "exec/ram_addr.h" #include "hw/usb.h" #include "qemu/config-file.h" #include "qemu/error-report.h" @@ -4015,6 +4016,7 @@ static void spapr_machine_class_init(ObjectClass *oc, void *data) 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; + smc->default_caps.caps[SPAPR_CAP_HPT_MAXPAGESIZE] = 16; /* 64kiB */ spapr_caps_add_properties(smc, &error_abort); } @@ -4103,8 +4105,18 @@ static void spapr_machine_2_12_instance_options(MachineState *machine) static void spapr_machine_2_12_class_options(MachineClass *mc) { + sPAPRMachineClass *smc = SPAPR_MACHINE_CLASS(mc); + uint8_t mps; + spapr_machine_3_0_class_options(mc); SET_MACHINE_COMPAT(mc, SPAPR_COMPAT_2_12); + + if (kvmppc_hpt_needs_host_contiguous_pages()) { + mps = ctz64(qemu_getrampagesize()); + } else { + mps = 34; /* allow everything up to 16GiB, i.e. everything */ + } + smc->default_caps.caps[SPAPR_CAP_HPT_MAXPAGESIZE] = mps; } DEFINE_SPAPR_MACHINE(2_12, "2.12", false); diff --git a/hw/ppc/spapr_caps.c b/hw/ppc/spapr_caps.c index 68a4243..6cdc0c9 100644 --- a/hw/ppc/spapr_caps.c +++ b/hw/ppc/spapr_caps.c @@ -27,6 +27,7 @@ #include "qapi/visitor.h" #include "sysemu/hw_accel.h" #include "target/ppc/cpu.h" +#include "target/ppc/mmu-hash64.h" #include "cpu-models.h" #include "kvm_ppc.h" @@ -144,6 +145,42 @@ out: g_free(val); } +static void spapr_cap_get_pagesize(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + sPAPRCapabilityInfo *cap = opaque; + sPAPRMachineState *spapr = SPAPR_MACHINE(obj); + uint8_t val = spapr_get_cap(spapr, cap->index); + uint64_t pagesize = (1ULL << val); + + visit_type_size(v, name, &pagesize, errp); +} + +static void spapr_cap_set_pagesize(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + sPAPRCapabilityInfo *cap = opaque; + sPAPRMachineState *spapr = SPAPR_MACHINE(obj); + uint64_t pagesize; + uint8_t val; + Error *local_err = NULL; + + visit_type_size(v, name, &pagesize, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } + + if (!is_power_of_2(pagesize)) { + error_setg(errp, "cap-%s must be a power of 2", cap->name); + return; + } + + val = ctz64(pagesize); + spapr->cmd_line_caps[cap->index] = true; + spapr->eff.caps[cap->index] = val; +} + static void cap_htm_apply(sPAPRMachineState *spapr, uint8_t val, Error **errp) { if (!val) { @@ -267,6 +304,16 @@ static void cap_safe_indirect_branch_apply(sPAPRMachineState *spapr, #define VALUE_DESC_TRISTATE " (broken, workaround, fixed)" +static void cap_hpt_maxpagesize_apply(sPAPRMachineState *spapr, + uint8_t val, Error **errp) +{ + if (val < 12) { + error_setg(errp, "Require at least 4kiB hpt-max-page-size"); + } else if (val < 16) { + warn_report("Many guests require at least 64kiB hpt-max-page-size"); + } +} + sPAPRCapabilityInfo capability_table[SPAPR_CAP_NUM] = { [SPAPR_CAP_HTM] = { .name = "htm", @@ -326,6 +373,15 @@ sPAPRCapabilityInfo capability_table[SPAPR_CAP_NUM] = { .possible = &cap_ibs_possible, .apply = cap_safe_indirect_branch_apply, }, + [SPAPR_CAP_HPT_MAXPAGESIZE] = { + .name = "hpt-max-page-size", + .description = "Maximum page size for Hash Page Table guests", + .index = SPAPR_CAP_HPT_MAXPAGESIZE, + .get = spapr_cap_get_pagesize, + .set = spapr_cap_set_pagesize, + .type = "int", + .apply = cap_hpt_maxpagesize_apply, + }, }; static sPAPRCapabilities default_caps_with_cpu(sPAPRMachineState *spapr, diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h index 8a91422..4bc9dbf 100644 --- a/include/hw/ppc/spapr.h +++ b/include/hw/ppc/spapr.h @@ -66,8 +66,10 @@ typedef enum { #define SPAPR_CAP_SBBC 0x04 /* Indirect Branch Serialisation */ #define SPAPR_CAP_IBS 0x05 +/* HPT Maximum Page Size (encoded as a shift) */ +#define SPAPR_CAP_HPT_MAXPAGESIZE 0x06 /* Num Caps */ -#define SPAPR_CAP_NUM (SPAPR_CAP_IBS + 1) +#define SPAPR_CAP_NUM (SPAPR_CAP_HPT_MAXPAGESIZE + 1) /* * Capability Values |