[PATCH 1/1] arm: mm: Export __sync_icache_dcache() for xen-privcmd

[Heinrich Schuchardt]

This patch avoids
ERROR: "__sync_icache_dcache" [drivers/xen/xen-privcmd.ko] undefined!
observed when compiling v4.19.34.

The xen-privcmd driver, which can be modular, calls set_pte_at()
which in turn may call __sync_icache_dcache().

Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Heinrich Schuchardt <xypron.glpk@xxxxxx>
---
 arch/arm/mm/flush.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/mm/flush.c b/arch/arm/mm/flush.c
index 58469623b015..5345f86c56d2 100644
--- a/arch/arm/mm/flush.c
+++ b/arch/arm/mm/flush.c
@@ -295,6 +295,7 @@ void __sync_icache_dcache(pte_t pteval)
 	if (pte_exec(pteval))
 		__flush_icache_all();
 }
+EXPORT_SYMBOL_GPL(__sync_icache_dcache);
 #endif

 /*
--
2.20.1