Arnd Bergmann f7606400f1 dma-buf: move system_cc_shared heap under separate Kconfig ...

While system heap and system_cc_shared heap share a lot of code
and hence the same source file, their users have different needs.

system heap users need it to be a loadable module, while
system_cc_shared heap users don't.

Building as a loadable module breaks system_cc_shared heap on
powerpc and s390 due to un-exported set_memory_encrypted /
set_memory_decrypted functions.

Fix these by reorganising code to put the system_cc_shared heap
under a new Kconfig symbol, which allows either building both
into the kernel, or leave encryption up to the consumers of the
system heap.

Fixes: fd55edff8a ("dma-buf: heaps: system: Turn the heap into a module")
Signed-off-by: Arnd Bergmann <[email protected]>
Signed-off-by: Sumit Semwal <[email protected]>
  [sumits: updated DMABUF_HEAPS_CC_SYSTEM to DMABUF_HEAPS_SYSTEM_CC_SHARED]
Reviewed-by: T.J. Mercier <[email protected]>
Acked-by: Maxime Ripard <[email protected]>
Reviewed-by: Jiri Pirko <[email protected]>
Link: https://patch.msgid.link/[email protected]

2026-06-11 20:21:44 +05:30

..

cma_heap.c

dma-buf: heaps: cma: Turn the heap into a module

2026-05-21 20:57:15 +05:30

Kconfig

dma-buf: move system_cc_shared heap under separate Kconfig

2026-06-11 20:21:44 +05:30

Makefile

…

system_heap.c

dma-buf: move system_cc_shared heap under separate Kconfig

2026-06-11 20:21:44 +05:30