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| author | Oliver O'Halloran <oohall@gmail.com> | 2018-10-15 01:18:28 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-10-18 15:56:17 +0200 |
| commit | b5beae5e224f1c72c4482b0ab36fc3d89481a6b2 (patch) | |
| tree | 84e8f94b18e4df68f701c866840d86d4e736e60d /arch/powerpc/platforms/pseries/Kconfig | |
| parent | powerpc/pseries: PAPR persistent memory support (diff) | |
| download | linux-b5beae5e224f1c72c4482b0ab36fc3d89481a6b2.tar.xz linux-b5beae5e224f1c72c4482b0ab36fc3d89481a6b2.zip | |
powerpc/pseries: Add driver for PAPR SCM regions
Adds a driver that implements support for enabling and accessing PAPR
SCM regions. Unfortunately due to how the PAPR interface works we can't
use the existing of_pmem driver (yet) because:
a) The guest is required to use the H_SCM_BIND_MEM h-call to add
add the SCM region to it's physical address space, and
b) There is currently no mechanism for relating a bare of_pmem region
to the backing DIMM (or not-a-DIMM for our case).
Both of these are easily handled by rolling the functionality into a
seperate driver so here we are...
Acked-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/platforms/pseries/Kconfig')
| -rw-r--r-- | arch/powerpc/platforms/pseries/Kconfig | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platforms/pseries/Kconfig index 39032d9b316c..2e4bd32154b5 100644 --- a/arch/powerpc/platforms/pseries/Kconfig +++ b/arch/powerpc/platforms/pseries/Kconfig @@ -138,3 +138,10 @@ config IBMEBUS bool "Support for GX bus based adapters" help Bus device driver for GX bus based adapters. + +config PAPR_SCM + depends on PPC_PSERIES && MEMORY_HOTPLUG + select LIBNVDIMM + tristate "Support for the PAPR Storage Class Memory interface" + help + Enable access to hypervisor provided storage class memory. |