# \[PATCH\] fbcon: use kvmalloc() for scrollback buffer

- From: Konstantin Khorenko \<hidden\>
- Date: 2018-11-26 10:03:02 
- List: linux-fbdev
- Page: https://ratatoskr.run/linux-fbdev/2018/11/5443614
- Thread: https://ratatoskr.run/linux-fbdev/2018/11/5443614/t.md

```text
Scrollback frame buffer is rather big - 32K,
so it requires 3rd order page, so let's use kvmalloc() instead of
ordinary kmalloc() for it.

Signed-off-by: Konstantin Khorenko <redacted>
---
 drivers/video/fbdev/core/fbcon.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c
index 8958ccc8b1ac..2b1a34d3f5e2 100644
--- a/drivers/video/fbdev/core/fbcon.c
+++ b/drivers/video/fbdev/core/fbcon.c
@@ -992,7 +992,7 @@ static const char *fbcon_startup(void)
 			if (!softback_buf) {
 				softback_buf  				    (unsigned long)
-				    kmalloc(fbcon_softback_size,
+				    kvmalloc(fbcon_softback_size,
 					    GFP_KERNEL);
 				if (!softback_buf) {
 					fbcon_softback_size = 0;
@@ -1001,7 +1001,7 @@ static const char *fbcon_startup(void)
 			}
 		} else {
 			if (softback_buf) {
-				kfree((void *) softback_buf);
+				kvfree((void *) softback_buf);
 				softback_buf = 0;
 				softback_top = 0;
 			}
@@ -3665,7 +3665,7 @@ static void fbcon_exit(void)
 	}
 #endif
 
-	kfree((void *)softback_buf);
+	kvfree((void *)softback_buf);
 	softback_buf = 0UL;
 
 	for_each_registered_fb(i) {
-- 
2.15.1
```