static void get_flags(struct flags *f)
{
char * tmp;
int n;
f->vcpus = xenstore_get("platform/vcpu/number");
f->vcpu_affinity = malloc(sizeof(char*) * f->vcpus);
for (n = 0; n < f->vcpus; n++) {
f->vcpu_affinity[n] = xenstore_gets("platform/vcpu/%d/affinity", n);
}
f->vcpus_current = xenstore_get("platform/vcpu/current");
f->vcpu_weight = xenstore_get("platform/vcpu/weight");
f->vcpu_cap = xenstore_get("platform/vcpu/cap");
f->nx = xenstore_get("platform/nx");
f->viridian = xenstore_get("platform/viridian");
f->viridian_time_ref_count = xenstore_get("platform/viridian_time_ref_count");
f->viridian_reference_tsc = xenstore_get("platform/viridian_reference_tsc");
f->apic = xenstore_get("platform/apic");
f->pae = xenstore_get("platform/pae");
f->tsc_mode = xenstore_get("platform/tsc_mode");
f->nested_hvm = xenstore_get("platform/exp-nested-hvm");
f->cores_per_socket = xenstore_get("platform/cores-per-socket");
/* Params going to hvmloader - need to convert "true" -> '1' as Xapi gets
* this wrong when migrating from older hosts. */
f->acpi = hvmloader_flag("platform/acpi");
f->acpi_s4 = hvmloader_flag("platform/acpi_s4");
f->acpi_s3 = hvmloader_flag("platform/acpi_s3");
/*
* HACK - Migrated VMs wont have this xs key set, so the naive action
* would result in the HPET mysteriously disappearing. If the key is not
* present then enable the hpet to match its default.
*/
tmp = xenstore_gets("platform/hpet");
if ( tmp && strlen(tmp) )
f->hpet = xenstore_get("platform/hpet");
else
f->hpet = 1;
free(tmp);
xg_info("Determined the following parameters from xenstore:\n");
xg_info("vcpu/number:%d vcpu/weight:%d vcpu/cap:%d\n",
f->vcpus, f->vcpu_weight, f->vcpu_cap);
xg_info("nx: %d, pae %d, cores-per-socket %u\n",
f->nx, f->pae, f->cores_per_socket);
xg_info("apic: %d acpi: %d acpi_s4: %d acpi_s3: %d tsc_mode: %d hpet: %d\n",
f->apic, f->acpi, f->acpi_s4, f->acpi_s3, f->tsc_mode, f->hpet);
xg_info("viridian: %d, time_ref_count: %d, reference_tsc: %d\n",
f->viridian, f->viridian_time_ref_count, f->viridian_reference_tsc);
for (n = 0; n < f->vcpus; n++){
xg_info("vcpu/%d/affinity:%s\n", n, (f->vcpu_affinity[n])?f->vcpu_affinity[n]:"unset");
}
}
static void
get_flags(struct flags *f, int domid)
{
int n;
f->vcpus = xenstore_get(domid, "platform/vcpu/number");
f->vcpu_affinity = (const char**)(malloc(sizeof(char*) * f->vcpus));
for (n = 0; n < f->vcpus; n++) {
f->vcpu_affinity[n] = xenstore_gets(domid, "platform/vcpu/%d/affinity", n);
}
f->vcpus_current = xenstore_get(domid, "platform/vcpu/current");
f->vcpu_weight = xenstore_get(domid, "platform/vcpu/weight");
f->vcpu_cap = xenstore_get(domid, "platform/vcpu/cap");
f->nx = xenstore_get(domid, "platform/nx");
f->viridian = xenstore_get(domid, "platform/viridian");
f->apic = xenstore_get(domid, "platform/apic");
f->acpi = xenstore_get(domid, "platform/acpi");
f->pae = xenstore_get(domid, "platform/pae");
f->acpi_s4 = xenstore_get(domid, "platform/acpi_s4");
f->acpi_s3 = xenstore_get(domid, "platform/acpi_s3");
f->mmio_size_mib = xenstore_get(domid, "platform/mmio_size_mib");
f->tsc_mode = xenstore_get(domid, "platform/tsc_mode");
openlog("xenguest",LOG_NDELAY,LOG_DAEMON);
syslog(LOG_INFO|LOG_DAEMON,"Determined the following parameters from xenstore:");
syslog(LOG_INFO|LOG_DAEMON,"vcpu/number:%d vcpu/weight:%d vcpu/cap:%d nx: %d viridian: %d apic: %d acpi: %d pae: %d acpi_s4: %d acpi_s3: %d mmio_size_mib: %ld tsc_mode %d",
f->vcpus,f->vcpu_weight,f->vcpu_cap,f->nx,f->viridian,f->apic,f->acpi,f->pae,f->acpi_s4,f->acpi_s3,f->mmio_size_mib,f->tsc_mode);
for (n = 0; n < f->vcpus; n++){
syslog(LOG_INFO|LOG_DAEMON,"vcpu/%d/affinity:%s", n, (f->vcpu_affinity[n])?f->vcpu_affinity[n]:"unset");
}
closelog();
}
static int set_genid(void)
{
uint64_t paddr = 0;
void *vaddr;
char *genid_val_str;
char *end;
uint64_t genid[2];
int rc = -1;
xc_get_hvm_param(xch, domid, HVM_PARAM_VM_GENERATION_ID_ADDR, &paddr);
if (paddr == 0)
return 0;
genid_val_str = xenstore_gets("platform/generation-id");
if ( !genid_val_str )
return 0;
errno = 0;
genid[0] = strtoull(genid_val_str, &end, 0);
genid[1] = 0;
if ( end && end[0] == ':' )
genid[1] = strtoull(end+1, NULL, 0);
if ( errno )
{
xg_err("strtoull of '%s' failed: %s\n", genid_val_str, strerror(errno));
goto out;
}
else if ( genid[0] == 0 || genid[1] == 0 )
{
xg_err("'%s' is not a valid generation id\n", genid_val_str);
goto out;
}
vaddr = xc_map_foreign_range(xch, domid, XC_PAGE_SIZE,
PROT_READ | PROT_WRITE,
paddr >> XC_PAGE_SHIFT);
if (vaddr == NULL) {
xg_err("Failed to map VM generation ID page: %s\n", strerror(errno));
goto out;
}
memcpy(vaddr + (paddr & ~XC_PAGE_MASK), genid, 2 * sizeof(*genid));
munmap(vaddr, XC_PAGE_SIZE);
/*
* FIXME: Inject ACPI Notify event.
*/
xg_info("Wrote generation ID %"PRId64":%"PRId64" at 0x%"PRIx64"\n",
genid[0], genid[1], paddr);
rc = 0;
out:
free(genid_val_str);
return rc;
}
static void
get_flags(struct flags *f, int domid)
{
int n;
size_t host_pv_kernel_max_size;
size_t host_pv_ramdisk_max_size;
size_t vm_pv_kernel_max_size;
size_t vm_pv_ramdisk_max_size;
f->vcpus = xenstore_get(domid, "platform/vcpu/number");
f->vcpu_affinity = (const char**)(malloc(sizeof(char*) * f->vcpus));
for (n = 0; n < f->vcpus; n++) {
f->vcpu_affinity[n] = xenstore_gets(domid, "platform/vcpu/%d/affinity", n);
}
f->vcpus_current = xenstore_get(domid, "platform/vcpu/current");
f->vcpu_weight = xenstore_get(domid, "platform/vcpu/weight");
f->vcpu_cap = xenstore_get(domid, "platform/vcpu/cap");
f->nx = xenstore_get(domid, "platform/nx");
f->viridian = xenstore_get(domid, "platform/viridian");
f->apic = xenstore_get(domid, "platform/apic");
f->acpi = xenstore_get(domid, "platform/acpi");
f->pae = xenstore_get(domid, "platform/pae");
f->acpi_s4 = xenstore_get(domid, "platform/acpi_s4");
f->acpi_s3 = xenstore_get(domid, "platform/acpi_s3");
f->mmio_size_mib = xenstore_get(domid, "platform/mmio_size_mib");
f->tsc_mode = xenstore_get(domid, "platform/tsc_mode");
xenstore_get_host_limits(&host_pv_kernel_max_size, &host_pv_ramdisk_max_size);
vm_pv_kernel_max_size = xenstore_get(domid, "pv-kernel-max-size");
vm_pv_ramdisk_max_size = xenstore_get(domid, "pv-ramdisk-max-size");
f->kernel_max_size = vm_pv_kernel_max_size ? vm_pv_kernel_max_size : host_pv_kernel_max_size;
f->ramdisk_max_size = vm_pv_ramdisk_max_size ? vm_pv_ramdisk_max_size : host_pv_ramdisk_max_size;
syslog(LOG_INFO|LOG_DAEMON,"Determined the following parameters from xenstore:");
syslog(LOG_INFO|LOG_DAEMON,"vcpu/number:%d vcpu/weight:%d vcpu/cap:%d nx: %d viridian: %d apic: %d acpi: %d pae: %d acpi_s4: %d acpi_s3: %d mmio_size_mib: %ld tsc_mode %d",
f->vcpus,f->vcpu_weight,f->vcpu_cap,f->nx,f->viridian,f->apic,f->acpi,f->pae,f->acpi_s4,f->acpi_s3,f->mmio_size_mib,f->tsc_mode);
for (n = 0; n < f->vcpus; n++){
syslog(LOG_INFO|LOG_DAEMON,"vcpu/%d/affinity:%s", n, (f->vcpu_affinity[n])?f->vcpu_affinity[n]:"unset");
}
syslog(LOG_INFO|LOG_DAEMON,"kernel/ramdisk host limits: (%zu,%zu), VM overrides: (%zu,%zu)",
host_pv_kernel_max_size, host_pv_ramdisk_max_size,
vm_pv_kernel_max_size, vm_pv_ramdisk_max_size);
}
static int hvmloader_flag(const char *key)
{
/* Params going to hvmloader need to convert "true" -> '1' as Xapi gets
* this wrong when migrating from older hosts. */
char *val = xenstore_gets("%s",key);
int ret = -1;
if ( val )
{
if ( !strcmp(val, "1") )
{
ret = 1;
goto out;
}
else if ( !strcmp(val, "0") )
{
ret = 0;
goto out;
}
if ( !strcasecmp(val, "true") )
ret = 1;
else
{
errno = 0;
ret = strtol(val, NULL, 0);
if ( errno )
ret = 0;
}
xg_info("HVMLoader error: Fixing up key '%s' from '%s' to '%d'\n", key, val, ret);
xenstore_putsv(key, "%d", !!ret);
}
else
xenstore_puts(key, "0");
out:
free(val);
return ret;
}
