From: Arnd Bergmann <arnd@kernel•org>
To: Madhavan Srinivasan <maddy@linux•ibm.com>,
Michael Ellerman <mpe@ellerman•id.au>,
"T.J. Mercier" <tjmercier@google•com>,
Maxime Ripard <mripard@kernel•org>,
Sumit Semwal <sumit.semwal@linaro•org>, Andrew Davis <afd@ti•com>
Cc: Arnd Bergmann <arnd@arndb•de>,
Nicholas Piggin <npiggin@gmail•com>,
"Christophe Leroy (CS GROUP)" <chleroy@kernel•org>,
linuxppc-dev@lists•ozlabs.org, linux-kernel@vger•kernel.org
Subject: [PATCH 2/2] powerpc: export memory encryption helper functions
Date: Tue, 26 May 2026 12:20:38 +0200 [thread overview]
Message-ID: <20260526102113.2594501-2-arnd@kernel.org> (raw)
In-Reply-To: <20260526102113.2594501-1-arnd@kernel.org>
From: Arnd Bergmann <arnd@arndb•de>
The set_memory_encrypted/set_memory_decrypted functions are exported
on x86 and arm64 but not on powerpc, which leads to a new build failure
because they are now used in a loadable module:
ERROR: modpost: "set_memory_encrypted" [drivers/dma-buf/heaps/system_heap.ko] undefined!
ERROR: modpost: "set_memory_decrypted" [drivers/dma-buf/heaps/system_heap.ko] undefined!
Export these the same way we do on the other architectures.
Fixes: fd55edff8a0a ("dma-buf: heaps: system: Turn the heap into a module")
Signed-off-by: Arnd Bergmann <arnd@arndb•de>
---
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..ab8f8c722741 100644
--- a/arch/powerpc/platforms/pseries/svm.c
+++ b/arch/powerpc/platforms/pseries/svm.c
@@ -6,6 +6,7 @@
* Author: Anshuman Khandual <khandual@linux•vnet.ibm.com>
*/
+#include <linux/export.h>
#include <linux/mm.h>
#include <linux/memblock.h>
#include <linux/mem_encrypt.h>
@@ -50,6 +51,7 @@ 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 +65,7 @@ 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)
--
2.39.5
next parent reply other threads:[~2026-05-26 10:21 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20260526102113.2594501-1-arnd@kernel.org>
2026-05-26 10:20 ` Arnd Bergmann [this message]
2026-05-26 11:53 ` [PATCH 2/2] powerpc: export memory encryption helper functions Christophe Leroy (CS GROUP)
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