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| author | Dan Williams <dan.j.williams@intel.com> | 2018-07-13 21:50:37 -0700 |
|---|---|---|
| committer | Dave Jiang <dave.jiang@intel.com> | 2018-08-20 09:22:45 -0700 |
| commit | c953cc987ab87d180e1d5de2f1c217abe33aac77 (patch) | |
| tree | 29e82381bba655d2141bf39c261312b56d128442 /mm | |
| parent | 284ce4011ba60d6c487b668eea729b6294930806 (diff) | |
| download | linux-c953cc987ab87d180e1d5de2f1c217abe33aac77.tar.bz2 | |
libnvdimm, pmem: Restore page attributes when clearing errors
Use clear_mce_nospec() to restore WB mode for the kernel linear mapping
of a pmem page that was marked 'HWPoison'. A page with 'HWPoison' set
has also been marked UC in PAT (page attribute table) via
set_mce_nospec() to prevent speculative retrievals of poison.
The 'HWPoison' flag is only cleared when overwriting an entire page.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions