alison.schofield@ wrote:
> From: Alison Schofield <[email protected]>
>
> Changes since v9:
> - Replace the multi-use 'name' var, with multiple descriptive
> flavors: memdev_name, region_name, decoder_name (DaveJ)
> - Use a static string table for poison source lookup (DaveJ)
> - Rebased on latest pending
> Link to v9:
> https://lore.kernel.org/r/[email protected]/
>
>
> Add the option to add a memory devices poison list to the cxl-list
> json output. Offer the option by memdev and by region. Sample usage:
>
> # cxl list -m mem1 --media-errors
> [
> {
> "memdev":"mem1",
> "pmem_size":1073741824,
> "ram_size":1073741824,
> "serial":1,
> "numa_node":1,
> "host":"cxl_mem.1",
> "media_errors":[
> {
> "dpa":0,
> "length":64,
> "source":"Internal"
> },
> {
> "decoder":"decoder10.0",
> "hpa":1035355557888,
> "dpa":1073741824,
> "length":64,
> "source":"External"
> },
> {
> "decoder":"decoder10.0",
> "hpa":1035355566080,
> "dpa":1073745920,
> "length":64,
> "source":"Injected"
> }
> ]
> }
> ]
>
> # cxl list -r region5 --media-errors
> [
> {
> "region":"region5",
> "resource":1035355553792,
> "size":2147483648,
> "type":"pmem",
> "interleave_ways":2,
> "interleave_granularity":4096,
> "decode_state":"commit",
> "media_errors":[
> {
> "decoder":"decoder10.0",
> "hpa":1035355557888,
> "dpa":1073741824,
> "length":64,
I notice that the ndctl --media-errors records are:
{ offset, length }
...it is not clear to me that "dpa" and "hpa" have much meaning to
userspace by default. Physical address information is privileged, so if
these records were { offset, length } tuples there is the possibility
that they can be provided to non-root.
"Offset" is region relative "hpa" when listing region media errors, and
"offset" is memdev relative "dpa" while listing memdev relative media
errors.
