[PATCH 4.9] arm64: fix the flush_icache_range arguments in machine_kexec

[PATCH 4.9] arm64: fix the flush_icache_range arguments in machine_kexec

[Catalin Marinas]

From: Christoph Hellwig <hch@lst.de>

Commit d51c214541c5154dda3037289ee895ea3ded5ebd upstream.

The second argument is the end "pointer", not the length.

Fixes: d28f6df1305a ("arm64/kexec: Add core kexec support")
Cc: <stable@vger.kernel.org> # 4.8.x-
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
---
 arch/arm64/kernel/machine_kexec.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/kernel/machine_kexec.c b/arch/arm64/kernel/machine_kexec.c
index bc96c8a7fc79..3e4b778f16a5 100644
--- a/arch/arm64/kernel/machine_kexec.c
+++ b/arch/arm64/kernel/machine_kexec.c
@@ -177,7 +177,8 @@ void machine_kexec(struct kimage *kimage)
 	/* Flush the reboot_code_buffer in preparation for its execution. */
 	__flush_dcache_area(reboot_code_buffer, arm64_relocate_new_kernel_size);
 	flush_icache_range((uintptr_t)reboot_code_buffer,
-		arm64_relocate_new_kernel_size);
+			   (uintptr_t)reboot_code_buffer +
+			   arm64_relocate_new_kernel_size);
 
 	/* Flush the kimage list and its buffers. */
 	kexec_list_flush(kimage);