diff options
Diffstat (limited to 'arch/powerpc/platforms/pseries/mobility.c')
| -rw-r--r-- | arch/powerpc/platforms/pseries/mobility.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/arch/powerpc/platforms/pseries/mobility.c b/arch/powerpc/platforms/pseries/mobility.c index 3d36a8955eaf..634fac5db3f9 100644 --- a/arch/powerpc/platforms/pseries/mobility.c +++ b/arch/powerpc/platforms/pseries/mobility.c @@ -216,7 +216,7 @@ static int update_dt_node(struct device_node *dn, s32 scope) nprops = be32_to_cpu(upwa->nprops); /* On the first call to ibm,update-properties for a node the - * the first property value descriptor contains an empty + * first property value descriptor contains an empty * property name, the property value length encoded as u32, * and the property value is the node path being updated. */ @@ -740,11 +740,19 @@ static int pseries_migrate_partition(u64 handle) #ifdef CONFIG_PPC_WATCHDOG factor = nmi_wd_lpm_factor; #endif + /* + * When the migration is initiated, the hypervisor changes VAS + * mappings to prepare before OS gets the notification and + * closes all VAS windows. NX generates continuous faults during + * this time and the user space can not differentiate these + * faults from the migration event. So reduce this time window + * by closing VAS windows at the beginning of this function. + */ + vas_migration_handler(VAS_SUSPEND); + ret = wait_for_vasi_session_suspending(handle); if (ret) - return ret; - - vas_migration_handler(VAS_SUSPEND); + goto out; if (factor) watchdog_nmi_set_timeout_pct(factor); @@ -765,6 +773,7 @@ static int pseries_migrate_partition(u64 handle) if (factor) watchdog_nmi_set_timeout_pct(0); +out: vas_migration_handler(VAS_RESUME); return ret; |