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powerpc: Ultravisor: Add PPC_UV config option

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CONFIG_PPC_UV adds support for ultravisor.

Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Signed-off-by: Bharata B Rao <bharata@linux.ibm.com>
Signed-off-by: Ram Pai <linuxram@us.ibm.com>
[ Update config help and commit message ]
Signed-off-by: Claudio Carvalho <cclaudio@linux.ibm.com>
Reviewed-by: Sukadev Bhattiprolu <sukadev@linux.ibm.com>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
This commit is contained in:
Anshuman Khandual 2019-11-25 08:36:31 +05:30 committed by Paul Mackerras
parent 22945688ac
commit 013a53f2d2
1 changed files with 17 additions and 0 deletions
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17
arch/powerpc/Kconfig
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@ -451,6 +451,23 @@ config PPC_TRANSACTIONAL_MEM
help help
Support user-mode Transactional Memory on POWERPC. Support user-mode Transactional Memory on POWERPC.
config PPC_UV
bool "Ultravisor support"
depends on KVM_BOOK3S_HV_POSSIBLE
select ZONE_DEVICE
select DEV_PAGEMAP_OPS
select DEVICE_PRIVATE
select MEMORY_HOTPLUG
select MEMORY_HOTREMOVE
default n
help
This option paravirtualizes the kernel to run in POWER platforms that
supports the Protected Execution Facility (PEF). On such platforms,
the ultravisor firmware runs at a privilege level above the
hypervisor.
If unsure, say "N".
config LD_HEAD_STUB_CATCH config LD_HEAD_STUB_CATCH
bool "Reserve 256 bytes to cope with linker stubs in HEAD text" if EXPERT bool "Reserve 256 bytes to cope with linker stubs in HEAD text" if EXPERT
depends on PPC64 depends on PPC64