[PATCH 1/1] nvme-pci: set virt boundary according to capability

[Max Gurtovoy]

Some controllers advertise DWORD alignment for SGLs, so configure the
virtual boundary correctly for those devices.

Signed-off-by: Max Gurtovoy <mgurtovoy at nvidia.com>
---
 drivers/nvme/host/pci.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index e5ca8301bb8b..eacc89cd25eb 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -3326,7 +3326,9 @@ static unsigned long nvme_pci_get_virt_boundary(struct nvme_ctrl *ctrl,
 {
 	if (!nvme_ctrl_sgl_supported(ctrl) || is_admin)
 		return NVME_CTRL_PAGE_SIZE - 1;
-	return 0;
+	else if (ctrl->sgls & NVME_CTRL_SGLS_BYTE_ALIGNED)
+		return 0;
+	return 3;
 }
 
 static const struct nvme_ctrl_ops nvme_pci_ctrl_ops = {
-- 
2.43.5