acpi: nfit: Add support for detect platform CPU cache flush on power loss

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In ACPI 6.2a the platform capability structure has been added to the NFIT
tables. That provides software the ability to determine whether a system
supports the auto flushing of CPU caches on power loss. If the capability
is supported, we do not need to do dax_flush(). Plumbing the path to set the
property on per region from the NFIT tables.

This patch depends on the ACPI NFIT 6.2a platform capabilities support code
in include/acpi/actbl1.h.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>

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Dave Jiang 2018-01-31 12:45:38 -07:00 • committed by Ross Zwisler

parent a7f2766ac7

commit 06e8ccdab1

4 changed files with 29 additions and 1 deletions

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include/linux/libnvdimm.h

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