Calling rte_mem_check_dma_mask when memory has not been initialized
yet is wrong. This patch use rte_mem_set_dma_mask instead.
Once memory initialization is done, the dma mask set will be used
for checking memory mapped is within the specified mask.
Fixes: fe822eb8c565 ("bus/pci: use IOVA DMA mask check when setting IOVA mode")
Signed-off-by: Alejandro Lucero <alejandro.luc...@netronome.com>
---
drivers/bus/pci/linux/pci.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/bus/pci/linux/pci.c b/drivers/bus/pci/linux/pci.c
index 0a81e063b..d87384c72 100644
--- a/drivers/bus/pci/linux/pci.c
+++ b/drivers/bus/pci/linux/pci.c
@@ -590,7 +590,16 @@ pci_one_device_iommu_support_va(struct rte_pci_device *dev)
mgaw = ((vtd_cap_reg & VTD_CAP_MGAW_MASK) >> VTD_CAP_MGAW_SHIFT) + 1;
- return rte_mem_check_dma_mask(mgaw) == 0 ? true : false;
+ /*
+ * Assuming there is no limitation by now. We can not know at this point
+ * because the memory has not been initialized yet. Setting the dma mask
+ * will force a check once memory initialization is done. We can not do
+ * a fallback to IOVA PA now, but if the dma check fails, the error
+ * message should advice for using '--iova-mode pa' if IOVA VA is the
+ * current mode.
+ */
+ rte_mem_set_dma_mask(mgaw);
+ return true;
}
#elif defined(RTE_ARCH_PPC_64)
static bool
--
2.17.1
