[PATCH 11/27] arm_mpam: Switch to kvzmalloc_objs() for allocation of component cfg

[James Morse]

From: Ben Horgan <ben.horgan at arm.com>

Each component cfg is sized by the size of a per-PARTID multiplied by the
number of PARTIDs. On a platform sized to push the limits of the
specification, the allocation using kzalloc_objs() will consistently
fail. Change to use kvzmalloc_objs() so that large allocations fall back to
vmalloc() based allocations.

Fixes: 09b89d2a72f3 ("arm_mpam: Allow configuration to be applied and restored during cpu online")
Signed-off-by: Ben Horgan <ben.horgan at arm.com>
Tested-by: Gavin Shan <gshan at redhat.com>
Reviewed-by: Gavin Shan <gshan at redhat.com>
Reviewed-by: James Morse <james.morse at arm.com>
Signed-off-by: James Morse <james.morse at arm.com>
---
 drivers/resctrl/mpam_devices.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/resctrl/mpam_devices.c b/drivers/resctrl/mpam_devices.c
index 67545df984fa..527867ab5f1b 100644
--- a/drivers/resctrl/mpam_devices.c
+++ b/drivers/resctrl/mpam_devices.c
@@ -157,7 +157,7 @@ static void mpam_free_garbage(void)
 		if (iter->pdev)
 			devm_kfree(&iter->pdev->dev, iter->to_free);
 		else
-			kfree(iter->to_free);
+			kvfree(iter->to_free);
 	}
 }
 
@@ -2698,7 +2698,7 @@ static int __allocate_component_cfg(struct mpam_component *comp)
 	if (comp->cfg)
 		return 0;
 
-	comp->cfg = kzalloc_objs(*comp->cfg, mpam_partid_max + 1);
+	comp->cfg = kvzalloc_objs(*comp->cfg, mpam_partid_max + 1);
 	if (!comp->cfg)
 		return -ENOMEM;
 
-- 
2.53.0