tools/testing/nvdimm: advertise a write cache for nfit_test

Commit 546eb0317cfa "libnvdimm, pmem: Do not flush power-fail protected CPU caches"
fixed the write_cache detection to correctly show the lack of a write
cache based on the platform capabilities described in the ACPI NFIT. The
nfit_test unit tests expected a write cache to be present, so change the
nfit test namespaces to only advertise a persistence domain limited to
the memory controller. This allows the kernel to show a write_cache
attribute, and the test behaviour remains unchanged.

Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

diff --git a/tools/testing/nvdimm/test/nfit.c b/tools/testing/nvdimm/test/nfit.c
index a8fb63e..e2926f7 100644 (file)
--- a/tools/testing/nvdimm/test/nfit.c
+++ b/tools/testing/nvdimm/test/nfit.c
@@ -1991,8 +1991,7 @@ static void nfit_test0_setup(struct nfit_test *t)
        pcap->header.type = ACPI_NFIT_TYPE_CAPABILITIES;
        pcap->header.length = sizeof(*pcap);
        pcap->highest_capability = 1;
-       pcap->capabilities = ACPI_NFIT_CAPABILITY_CACHE_FLUSH |
-               ACPI_NFIT_CAPABILITY_MEM_FLUSH;
+       pcap->capabilities = ACPI_NFIT_CAPABILITY_MEM_FLUSH;
        offset += pcap->header.length;
 
        if (t->setup_hotplug) {