[PATCH v2 2/2] habanalabs: handle large memory on MMU

[Omer Shpigelman]

This patch changes the allocation of the host memory pages array to use
vmalloc if needed. This in order to support mapping of large memory
chunks.

Signed-off-by: Omer Shpigelman <oshpigel...@habana.ai>
---
 drivers/misc/habanalabs/memory.c | 12 +++---------
 1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/drivers/misc/habanalabs/memory.c b/drivers/misc/habanalabs/memory.c
index 552a47126567..ed3976f2198d 100644
--- a/drivers/misc/habanalabs/memory.c
+++ b/drivers/misc/habanalabs/memory.c
@@ -1228,7 +1228,7 @@ static int init_sg_list_for_vmalloc_memory(struct 
hl_device *hdev, u64 addr,
        u64 tmp_addr;
        int i, rc;
 
-       pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
+       pages = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
        if (!pages)
                return -ENOMEM;
 
@@ -1249,17 +1249,11 @@ static int init_sg_list_for_vmalloc_memory(struct 
hl_device *hdev, u64 addr,
 
        rc = sg_alloc_table_from_pages(sgt, pages, npages, offset, size,
                                        GFP_KERNEL);
-       if (rc < 0) {
+       if (rc < 0)
                dev_err(hdev->dev, "failed to create SG table from pages\n");
-               goto free_pages;
-       }
-
-       kfree(pages);
-
-       return 0;
 
 free_pages:
-       kfree(pages);
+       kvfree(pages);
        return rc;
 }
 
-- 
2.17.1