AuxXxilium/linux_dsm_epyc7002
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53e80bd042
linux_dsm_epyc7002/arch/powerpc
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Aneesh Kumar K.V 53e80bd042 powerpc/nvdimm: Add support for multibyte read/write for metadata 
SCM_READ/WRITE_MEATADATA hcall supports multibyte read/write. This patch
updates the metadata read/write to use 1, 2, 4 or 8 byte read/write as
mentioned in PAPR document.

READ/WRITE_METADATA hcall supports the 1, 2, 4, or 8 bytes read/write.
For other values hcall results H_P3.

Hypervisor stores the metadata contents in big-endian format and in-order
to enable read/write in different granularity, we need to switch the contents
to big-endian before calling HCALL.

Based on an patch from Oliver O'Halloran <oohall@gmail.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-07-05 00:37:33 +10:00
..
boot treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 40 2019-05-24 17:27:12 +02:00
configs powerpc: Enable CONFIG_IPV6 in ppc64_defconfig 2019-07-04 21:04:06 +10:00
crypto treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
include powerpc/mm: Remove unused variable declaration 2019-07-05 00:20:42 +10:00
kernel powerpc/pci/of: Parse unassigned resources 2019-07-03 15:19:35 +10:00
kvm powerpc/Kconfig: Clean up formatting 2019-07-04 16:55:10 +10:00
lib powerpc/lib: only build ldstfp.o when CONFIG_PPC_FPU is set 2019-05-28 12:08:11 +10:00
math-emu powerpc: math-emu: remove unneeded header search paths 2019-01-14 20:39:27 +11:00
mm powerpc/mm/nvdimm: Add an informative message if we fail to allocate altmap block 2019-07-05 00:32:57 +10:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 2019-03-16 12:20:08 -07:00
oprofile Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
perf powerpc/perf/24x7: use rb_entry 2019-07-04 17:09:37 +10:00
platforms powerpc/nvdimm: Add support for multibyte read/write for metadata 2019-07-05 00:37:33 +10:00
purgatory powerpc: disable KASAN instrumentation on early/critical files. 2019-05-03 01:20:26 +10:00
sysdev powerpc/Kconfig: Clean up formatting 2019-07-04 16:55:10 +10:00
tools
xmon powerpc/64s/exception: remove bad stack branch 2019-07-02 21:39:49 +10:00
Kbuild
Kconfig powerpc/Kconfig: Clean up formatting 2019-07-04 16:55:10 +10:00
Kconfig.debug powerpc/xmon: add read-only mode 2019-05-03 02:54:57 +10:00
Makefile treewide: prefix header search paths with $(srctree)/ 2019-05-18 11:49:57 +09:00
Makefile.postlink