Update MemoryFence for virtual_media driver

MemoryFence is used by kernelflinger, however, currently MemoryFence is defined in header file, it leads to link failure due to lack of symbol. Add MemoryFence implementation in virtual_media driver to fix this issue. Tracked-On: OAM-113553 Signed-off-by: Zhong,Fangjian <[email protected]>
projectceladon · Nov 23, 2023 · 06f22b3 · 06f22b3
1 parent 932b139
commit 06f22b3
Showing 1 changed file with 11 additions and 0 deletions.
diff --git a/drivers/virtual_media/VirtioLib.c b/drivers/virtual_media/VirtioLib.c
@@ -30,6 +30,17 @@
 
 #define EFI_PAGES_TO_SIZE(Pages)	((Pages) << EFI_PAGE_SHIFT)
 
+#ifdef MemoryFence
+#undef MemoryFence
+VOID
+EFIAPI
+MemoryFence (
+    VOID
+    )
+{
+    __asm__ __volatile__ ("":::"memory");
+}
+#endif
 
 /**