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spapr: add uuid/host details to device tree

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Useful for identifying the guest/host uniquely within the
guest. Adding following properties to the guest root node.

vm,uuid - uuid of the guest
host-model - Host model number
host-serial - Host machine serial number
hypervisor type - Tells its "kvm"

Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Nikunj A Dadhania 2014-07-09 16:08:37 +05:30 • committed by Alexander Graf
parent 7d0cd464a7
commit ef9514431d
3 changed files with 52 additions and 1 deletions
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28
hw/ppc/spapr.c
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@ -319,6 +319,7 @@ static void *spapr_create_fdt_skel(hwaddr initrd_base,
QemuOpts *opts = qemu_opts_find(qemu_find_opts("smp-opts"), NULL);
unsigned sockets = opts ? qemu_opt_get_number(opts, "sockets", 0) : 0;
uint32_t cpus_per_socket = sockets ? (smp_cpus / sockets) : 1;
char *buf;
add_str(hypertas, "hcall-pft");
add_str(hypertas, "hcall-term");
@ -348,6 +349,33 @@ static void *spapr_create_fdt_skel(hwaddr initrd_base,
_FDT((fdt_property_string(fdt, "model", "IBM pSeries (emulated by qemu)")));
_FDT((fdt_property_string(fdt, "compatible", "qemu,pseries")));
if (kvm_enabled()) {
_FDT((fdt_property_string(fdt, "hypervisor", "kvm")));
}
/*
* Add info to guest to indentify which host is it being run on
* and what is the uuid of the guest
*/
if (kvmppc_get_host_model(&buf)) {
_FDT((fdt_property_string(fdt, "host-model", buf)));
g_free(buf);
}
if (kvmppc_get_host_serial(&buf)) {
_FDT((fdt_property_string(fdt, "host-serial", buf)));
g_free(buf);
}
buf = g_strdup_printf(UUID_FMT, qemu_uuid[0], qemu_uuid[1],
qemu_uuid[2], qemu_uuid[3], qemu_uuid[4],
qemu_uuid[5], qemu_uuid[6], qemu_uuid[7],
qemu_uuid[8], qemu_uuid[9], qemu_uuid[10],
qemu_uuid[11], qemu_uuid[12], qemu_uuid[13],
qemu_uuid[14], qemu_uuid[15]);
_FDT((fdt_property_string(fdt, "vm,uuid", buf)));
g_free(buf);
_FDT((fdt_property_cell(fdt, "#address-cells", 0x2)));
_FDT((fdt_property_cell(fdt, "#size-cells", 0x2)));