[PATCH 04/15] habanalabs: fix user mappings calculation in case of page fault

From: Oded Gabbay
Date: Thu Oct 27 2022 - 05:10:59 EST


From: Dani Liberman <dliberman@xxxxxxxxx>

As there are 2 types of user mappings, pmmu and hmmu, calculate
only the relevant mappings for the requested type.

Signed-off-by: Dani Liberman <dliberman@xxxxxxxxx>
Reviewed-by: Oded Gabbay <ogabbay@xxxxxxxxxx>
Signed-off-by: Oded Gabbay <ogabbay@xxxxxxxxxx>
---
drivers/misc/habanalabs/common/device.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/misc/habanalabs/common/device.c b/drivers/misc/habanalabs/common/device.c
index 0026fe42b3d2..0e88396744a1 100644
--- a/drivers/misc/habanalabs/common/device.c
+++ b/drivers/misc/habanalabs/common/device.c
@@ -2305,8 +2305,13 @@ static void hl_capture_user_mappings(struct hl_device *hdev, bool is_pmmu)
}

mutex_lock(&ctx->mem_hash_lock);
- hash_for_each(ctx->mem_hash, i, hnode, node)
- pgf_info->num_of_user_mappings++;
+ hash_for_each(ctx->mem_hash, i, hnode, node) {
+ vm_type = hnode->ptr;
+ if (((*vm_type == VM_TYPE_USERPTR) && is_pmmu) ||
+ ((*vm_type == VM_TYPE_PHYS_PACK) && !is_pmmu))
+ pgf_info->num_of_user_mappings++;
+
+ }

if (!pgf_info->num_of_user_mappings)
goto finish;
--
2.25.1