On 2017/8/3 21:35, Hanjun Guo wrote:

On 2017/8/3 0:21, Lorenzo Pieralisi wrote:

quoted

quoted

Patch that I will send upstream below, please check, thanks.

-- >8 --
Subject: [PATCH] ACPI/IORT: numa: Add numa node mapping for smmuv3 devices

ARM IORT specification(rev. C) has added  provision to define proximity
domain in SMMUv3 IORT table. Adding required code to parse Proximity
domain and set numa_node of smmv3 platform devices.

Add code to parse proximity domain in SMMUv3 IORT table to
set numa node mapping for smmuv3 devices.

Link: http://lkml.kernel.org/r/20170706112017.GA16981 at rric.localdomain
Signed-off-by: Ganapatrao Kulkarni <redacted>
[lorenzo.pieralisi at arm.com: updated review comments]
Signed-off-by: Lorenzo Pieralisi <redacted>
---
 drivers/acpi/arm64/iort.c | 29 ++++++++++++++++++++++++++++-
 1 file changed, 28 insertions(+), 1 deletion(-)

diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c
index a3215ee..35dd803 100644
--- a/drivers/acpi/arm64/iort.c
+++ b/drivers/acpi/arm64/iort.c

@@ -908,6 +908,27 @@ static bool __init arm_smmu_v3_is_coherent(struct acpi_iort_node *node)
 	return smmu->flags & ACPI_IORT_SMMU_V3_COHACC_OVERRIDE;
 }
 
+#if defined(CONFIG_ACPI_NUMA) && defined(ACPI_IORT_SMMU_v3_PXM_VALID)

Typo here, s/v3/V3, wit this typo, smmu proximity callback will be set to NULL.

quoted

quoted

+/*
+ * set numa proximity domain for smmuv3 device
+ */
+static void  __init arm_smmu_v3_set_proximity(struct device *dev,
+					      struct acpi_iort_node *node)
+{
+	struct acpi_iort_smmu_v3 *smmu;
+
+	smmu = (struct acpi_iort_smmu_v3 *)node->node_data;
+	if (smmu->flags & ACPI_IORT_SMMU_V3_PXM_VALID) {
+		set_dev_node(dev, acpi_map_pxm_to_node(smmu->pxm));
+		dev_info(dev, "SMMUV3[%llx] Mapped to Proximity domain %d\n",
+			smmu->base_address,
+			smmu->pxm);

Here I got:

[    5.074246]  (null): SMMUV3[a0040000] Mapped to Proximity domain 0
[    5.074296]  (null): SMMUV3[700a0040000] Mapped to Proximity domain 2
[    5.074319]  (null): SMMUV3[c0040000] Mapped to Proximity domain 0
[    5.074344]  (null): SMMUV3[8a0040000] Mapped to Proximity domain 1
[    5.074368]  (null): SMMUV3[600a0040000] Mapped to Proximity domain 2

And SMMU-v3 or SMMUv3 is better I think.

Thanks
Hanjun