Use kmap instead of page_address as it's not always in low memory.
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@xxxxxxxxxx>
---
net/xdp/xdp_umem.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/net/xdp/xdp_umem.c b/net/xdp/xdp_umem.c
index 9c6de4f114f8..d3c1411420fd 100644
--- a/net/xdp/xdp_umem.c
+++ b/net/xdp/xdp_umem.c
@@ -169,6 +169,14 @@ static void xdp_umem_clear_dev(struct xdp_umem *umem)
}
}
+static void xdp_umem_unmap_pages(struct xdp_umem *umem)
+{
+ unsigned int i;
+
+ for (i = 0; i < umem->npgs; i++)
+ kunmap(umem->pgs[i]);
+}
+
static void xdp_umem_unpin_pages(struct xdp_umem *umem)
{
unsigned int i;
@@ -210,6 +218,7 @@ static void xdp_umem_release(struct xdp_umem *umem)
xsk_reuseq_destroy(umem);
+ xdp_umem_unmap_pages(umem);
xdp_umem_unpin_pages(umem);
kfree(umem->pages);
@@ -372,7 +381,7 @@ static int xdp_umem_reg(struct xdp_umem *umem, struct xdp_umem_reg *mr)
}
for (i = 0; i < umem->npgs; i++)
- umem->pages[i].addr = page_address(umem->pgs[i]);
+ umem->pages[i].addr = kmap(umem->pgs[i]);
return 0;
--
2.17.1
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