After commit fd55edff8a0a ("dma-buf: heaps: system: Turn the heap into a
module") the system dma-buf heaps can be built as a module. The
system_cc_shared heap uses set_memory_encrypted and set_memory_decrypted
but those functions are not exported on powerpc. This can result in a
build error like:

>> ERROR: modpost: "set_memory_decrypted" [drivers/dma-buf/heaps/system_heap.ko] undefined!
>> ERROR: modpost: "set_memory_encrypted" [drivers/dma-buf/heaps/system_heap.ko] undefined!

Export the functions so system_heap.ko can be built.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202605230046.E9uhmQXM-lkp@intel.com/
Fixes: fd55edff8a0a ("dma-buf: heaps: system: Turn the heap into a module")
Signed-off-by: T.J. Mercier <tjmercier@google.com>
---
 arch/powerpc/platforms/pseries/svm.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/powerpc/platforms/pseries/svm.c b/arch/powerpc/platforms/pseries/svm.c
index 384c9dc1899a..59cf32e51ca3 100644
--- a/arch/powerpc/platforms/pseries/svm.c
+++ b/arch/powerpc/platforms/pseries/svm.c
@@ -50,6 +50,7 @@ int set_memory_encrypted(unsigned long addr, int numpages)
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(set_memory_encrypted);
 
 int set_memory_decrypted(unsigned long addr, int numpages)
 {
@@ -63,6 +64,8 @@ int set_memory_decrypted(unsigned long addr, int numpages)
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(set_memory_decrypted);
+
 
 /* There's one dispatch log per CPU. */
 #define NR_DTL_PAGE (DISPATCH_LOG_BYTES * CONFIG_NR_CPUS / PAGE_SIZE)
-- 
2.54.0.746.g67dd491aae-goog