commit 3b3b0baec7c5bcdfb1763afe4e0022d903b19da7
author Arnav Kansal <rnv@google.com> Wed Jan 22 20:10:13 2025 +0000
committer COS Cherry Picker <cloud-image-release@prod.google.com> Fri Jan 31 19:29:55 2025 -0800
tree a7e8c2e3f51d2e5f5315956126a2fec9c28e3aec
parent d92d6140795a41dc12c5d6312c6a41e150deee79

Enable shared memory buffer support for ARM64 kernel

CONFIG_DMABUF_HEAPS=y // Enables DMA-BUF memory heaps.
CONFIG_DMABUF_HEAPS_SYSTEM=y // Enables the system dmabuf heap
CONFIG_UDMABUF=y // userspace API

BUG=b/373658227
TEST=presubmit+manual verification
RELEASE_NOTE=Enable Grace platform support: Enables DMA-BUF shared
memory support for the ARM64 kernel.

cos-patch: bug
Change-Id: I83ae91d8aa23fab83d3f9991f0d748eb4b592f98
Reviewed-on: https://cos-review.googlesource.com/c/third_party/kernel/+/91523
Reviewed-by: Shuo Yang <gshuoy@google.com>
Reviewed-by: Kevin Berry <kpberry@google.com>
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
(cherry picked from commit cd49b5835ac9687bfc1a641da7303b9fc22ecf41)
Reviewed-on: https://cos-review.googlesource.com/c/third_party/kernel/+/91823
Main-Branch-Verified: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>

arch/arm64/configs/lakitu_defconfig

diff --git a/arch/arm64/configs/lakitu_defconfig b/arch/arm64/configs/lakitu_defconfig
index e45a0124..b8b833a 100644
--- a/arch/arm64/configs/lakitu_defconfig
+++ b/arch/arm64/configs/lakitu_defconfig
@@ -3317,12 +3317,13 @@
 #
 CONFIG_SYNC_FILE=y
 # CONFIG_SW_SYNC is not set
-# CONFIG_UDMABUF is not set
+CONFIG_UDMABUF=y
 # CONFIG_DMABUF_MOVE_NOTIFY is not set
 # CONFIG_DMABUF_DEBUG is not set
 # CONFIG_DMABUF_SELFTESTS is not set
-# CONFIG_DMABUF_HEAPS is not set
+CONFIG_DMABUF_HEAPS=y
 # CONFIG_DMABUF_SYSFS_STATS is not set
+CONFIG_DMABUF_HEAPS_SYSTEM=y
 # end of DMABUF options
 
 CONFIG_UIO=m