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-rw-r--r--init/main.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/init/main.c b/init/main.c
index 052481fbe363..9789ab7fe85e 100644
--- a/init/main.c
+++ b/init/main.c
@@ -488,6 +488,8 @@ void __init __weak thread_stack_cache_init(void)
}
#endif
+void __init __weak mem_encrypt_init(void) { }
+
/*
* Set up kernel memory allocators
*/
@@ -641,6 +643,14 @@ asmlinkage __visible void __init start_kernel(void)
*/
locking_selftest();
+ /*
+ * This needs to be called before any devices perform DMA
+ * operations that might use the SWIOTLB bounce buffers. It will
+ * mark the bounce buffers as decrypted so that their usage will
+ * not cause "plain-text" data to be decrypted when accessed.
+ */
+ mem_encrypt_init();
+
#ifdef CONFIG_BLK_DEV_INITRD
if (initrd_start && !initrd_below_start_ok &&
page_to_pfn(virt_to_page((void *)initrd_start)) < min_low_pfn) {