[PATCH] tools/testing/nvdimm: fix allocation range for mock flush hint tables

[PATCH] tools/testing/nvdimm: fix allocation range for mock flush hint tables

[Dan Williams]

Commit 480b6837aa57 "nvdimm: fix PHYS_PFN/PFN_PHYS mixup" identified
that we were passing an invalid address to devm_nvdimm_ioremap(). With
that fixed it exposed a bug in the memory reservation size for flush
hint tables.  Since we map a full page we need to mock a full page of
memory to back the flush hint table entries.

Cc: Oliver O'Halloran <oohall@gmail.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---
 tools/testing/nvdimm/test/nfit.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/testing/nvdimm/test/nfit.c b/tools/testing/nvdimm/test/nfit.c
index dd48f421844c..f64c57bf1d4b 100644
--- a/tools/testing/nvdimm/test/nfit.c
+++ b/tools/testing/nvdimm/test/nfit.c
@@ -603,7 +603,8 @@ static int nfit_test0_alloc(struct nfit_test *t)
 			return -ENOMEM;
 		sprintf(t->label[i], "label%d", i);
 
-		t->flush[i] = test_alloc(t, sizeof(u64) * NUM_HINTS,
+		t->flush[i] = test_alloc(t, max(PAGE_SIZE,
+					sizeof(u64) * NUM_HINTS),
 				&t->flush_dma[i]);
 		if (!t->flush[i])
 			return -ENOMEM;

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