powerpc/mm: Fix missing KUAP disable in flush_coherent_icache()

[linux-2.6-microblaze.git] / arch / powerpc / mm / mem.c

diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index ef7b111..1c07d5a 100644 (file)
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -373,7 +373,9 @@ static inline bool flush_coherent_icache(unsigned long addr)
         */
        if (cpu_has_feature(CPU_FTR_COHERENT_ICACHE)) {
                mb(); /* sync */
+               allow_read_from_user((const void __user *)addr, L1_CACHE_BYTES);
                icbi((void *)addr);
+               prevent_read_from_user((const void __user *)addr, L1_CACHE_BYTES);
                mb(); /* sync */
                isync();
                return true;