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Introduce a set of APIs for retrieving and updating PAPR system parameters. This encapsulates the toil of temporary RTAS work area management, RTAS function call retries, and translation of RTAS call statuses to conventional error values. There are several places in the kernel that already retrieve system parameters by calling the RTAS ibm,get-system-parameter function directly. These will be converted to papr_sysparm_get() in changes to follow. As for updating system parameters, current practice is to use sys_rtas() from user space; there are no in-kernel users of the RTAS ibm,set-system-parameter function. However this will become deprecated in time because it is not compatible with lockdown. The papr_sysparm_* APIs will form the common basis for in-kernel and user space access to system parameters. The code to expose the set/get capabilities to user space will follow. Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20230125-b4-powerpc-rtas-queue-v3-14-26929c8cce78@linux.ibm.com
40 lines
1.4 KiB
Makefile
40 lines
1.4 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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ccflags-$(CONFIG_PPC64) := $(NO_MINIMAL_TOC)
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ccflags-$(CONFIG_PPC_PSERIES_DEBUG) += -DDEBUG
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obj-y := lpar.o hvCall.o nvram.o reconfig.o \
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of_helpers.o rtas-work-area.o papr-sysparm.o \
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setup.o iommu.o event_sources.o ras.o \
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firmware.o power.o dlpar.o mobility.o rng.o \
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pci.o pci_dlpar.o eeh_pseries.o msi.o \
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papr_platform_attributes.o dtl.o
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obj-$(CONFIG_SMP) += smp.o
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obj-$(CONFIG_KEXEC_CORE) += kexec.o
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obj-$(CONFIG_PSERIES_ENERGY) += pseries_energy.o
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obj-$(CONFIG_HOTPLUG_CPU) += hotplug-cpu.o
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obj-$(CONFIG_MEMORY_HOTPLUG) += hotplug-memory.o pmem.o
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obj-$(CONFIG_HVC_CONSOLE) += hvconsole.o
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obj-$(CONFIG_HVCS) += hvcserver.o
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obj-$(CONFIG_HCALL_STATS) += hvCall_inst.o
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obj-$(CONFIG_CMM) += cmm.o
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obj-$(CONFIG_IO_EVENT_IRQ) += io_event_irq.o
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obj-$(CONFIG_LPARCFG) += lparcfg.o
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obj-$(CONFIG_IBMVIO) += vio.o
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obj-$(CONFIG_IBMEBUS) += ibmebus.o
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obj-$(CONFIG_PAPR_SCM) += papr_scm.o
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obj-$(CONFIG_PPC_SPLPAR) += vphn.o
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obj-$(CONFIG_PPC_SVM) += svm.o
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obj-$(CONFIG_FA_DUMP) += rtas-fadump.o
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obj-$(CONFIG_PSERIES_PLPKS) += plpks.o
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obj-$(CONFIG_PPC_SECURE_BOOT) += plpks-secvar.o
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obj-$(CONFIG_SUSPEND) += suspend.o
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obj-$(CONFIG_PPC_VAS) += vas.o vas-sysfs.o
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obj-$(CONFIG_ARCH_HAS_CC_PLATFORM) += cc_platform.o
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# nothing that operates in real mode is safe for KASAN
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KASAN_SANITIZE_ras.o := n
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KASAN_SANITIZE_kexec.o := n
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