# SPDX-License-Identifier: GPL-2.0 config PPC_PSERIES depends on PPC64 && PPC_BOOK3S bool "IBM pSeries & new (POWER5-based) iSeries" select HAVE_PCSPKR_PLATFORM select MPIC select OF_DYNAMIC select FORCE_PCI select PCI_MSI select GENERIC_ALLOCATOR select PPC_XICS select PPC_XIVE_SPAPR select PPC_ICP_NATIVE select PPC_ICP_HV select PPC_ICS_RTAS select PPC_I8259 select PPC_RTAS select PPC_RTAS_DAEMON select RTAS_ERROR_LOGGING select PPC_UDBG_16550 select PPC_DOORBELL select HOTPLUG_CPU select FORCE_SMP select SWIOTLB select ARCH_SUPPORTS_PER_VMA_LOCK default y config PARAVIRT bool config PARAVIRT_SPINLOCKS bool config PARAVIRT_TIME_ACCOUNTING select PARAVIRT bool config PPC_SPLPAR bool "Support for shared-processor logical partitions" depends on PPC_PSERIES select PARAVIRT_SPINLOCKS if PPC_QUEUED_SPINLOCKS select PARAVIRT_TIME_ACCOUNTING if VIRT_CPU_ACCOUNTING_GEN default y help Enabling this option will make the kernel run more efficiently on logically-partitioned pSeries systems which use shared processors, that is, which share physical processors between two or more partitions. Say Y if you are unsure. config DTL bool "Dispatch Trace Log" depends on PPC_SPLPAR && DEBUG_FS help SPLPAR machines can log hypervisor preempt & dispatch events to a kernel buffer. Saying Y here will enable logging these events, which are accessible through a debugfs file. Say N if you are unsure. config PSERIES_ENERGY tristate "pSeries energy management capabilities driver" depends on PPC_PSERIES default y help Provides interface to platform energy management capabilities on supported PSERIES platforms. Provides: /sys/devices/system/cpu/pseries_(de)activation_hint_list and /sys/devices/system/cpu/cpuN/pseries_(de)activation_hint config IO_EVENT_IRQ bool "IO Event Interrupt support" depends on PPC_PSERIES default y help Select this option, if you want to enable support for IO Event interrupts. IO event interrupt is a mechanism provided by RTAS to return information about hardware error and non-error events which may need OS attention. RTAS returns events for multiple event types and scopes. Device drivers can register their handlers to receive events. This option will only enable the IO event platform code. You will still need to enable or compile the actual drivers that use this infrastructure to handle IO event interrupts. Say Y if you are unsure. config LPARCFG bool "LPAR Configuration Data" depends on PPC_PSERIES help Provide system capacity information via human readable <key word>=<value> pairs through a /proc/ppc64/lparcfg interface. config PPC_PSERIES_DEBUG depends on PPC_PSERIES && PPC_EARLY_DEBUG bool "Enable extra debug logging in platforms/pseries" default y help Say Y here if you want the pseries core to produce a bunch of debug messages to the system log. Select this if you are having a problem with the pseries core and want to see more of what is going on. This does not enable debugging in lpar.c, which must be manually done due to its verbosity. config PPC_SMLPAR bool "Support for shared-memory logical partitions" depends on PPC_PSERIES select LPARCFG help Select this option to enable shared memory partition support. With this option a system running in an LPAR can be given more memory than physically available and will allow firmware to balance memory across many LPARs. config CMM tristate "Collaborative memory management" depends on PPC_SMLPAR select MEMORY_BALLOON default y help Select this option, if you want to enable the kernel interface to reduce the memory size of the system. This is accomplished by allocating pages of memory and put them "on hold". This only makes sense for a system running in an LPAR where the unused pages will be reused for other LPARs. The interface allows firmware to balance memory across many LPARs. config HV_PERF_CTRS bool "Hypervisor supplied PMU events (24x7 & GPCI)" default y depends on PERF_EVENTS && PPC_PSERIES help Enable access to hypervisor supplied counters in perf. Currently, this enables code that uses the hcall GetPerfCounterInfo and 24x7 interfaces to retrieve counters. GPCI exists on Power 6 and later systems. 24x7 is available on Power 8 and later systems. If unsure, select Y. config IBMVIO depends on PPC_PSERIES bool default y config IBMEBUS depends on PPC_PSERIES && !CPU_LITTLE_ENDIAN bool "Support for GX bus based adapters" help Bus device driver for GX bus based adapters. config PSERIES_PLPKS depends on PPC_PSERIES select NLS bool # PowerVM provides an isolated Platform Keystore (PKS) storage # allocation for each LPAR with individually managed access # controls to store sensitive information securely. It can be # used to store asymmetric public keys or secrets as required # by different usecases. # # This option is selected by in-kernel consumers that require # access to the PKS. config PAPR_SCM depends on PPC_PSERIES && MEMORY_HOTPLUG && LIBNVDIMM tristate "Support for the PAPR Storage Class Memory interface" help Enable access to hypervisor provided storage class memory. config PPC_SVM bool "Secure virtual machine (SVM) support for POWER" depends on PPC_PSERIES select SWIOTLB select ARCH_HAS_MEM_ENCRYPT select ARCH_HAS_FORCE_DMA_UNENCRYPTED select ARCH_HAS_CC_PLATFORM help There are certain POWER platforms which support secure guests using the Protected Execution Facility, with the help of an Ultravisor executing below the hypervisor layer. This enables support for those guests. If unsure, say "N".