[PATCH v2] powerpc/nvdimm: Add support for multibyte read/write for metadata

[Michael Ellerman]

On Fri, 2019-06-07 at 06:45:11 UTC, "Aneesh Kumar K.V" wrote:
> 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 at gmail.com>
> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar at linux.ibm.com>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/53e80bd042773c8ddeed856bd1b68ca74c3b8b46

cheers