The patch below does not apply to the 4.14-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From d51c214541c5154dda3037289ee895ea3ded5ebd Mon Sep 17 00:00:00 2001
From: Christoph Hellwig hch@lst.de Date: Sun, 10 May 2020 09:54:41 +0200 Subject: [PATCH] arm64: fix the flush_icache_range arguments in machine_kexec
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
diff --git a/arch/arm64/kernel/machine_kexec.c b/arch/arm64/kernel/machine_kexec.c index 8e9c924423b4..a0b144cfaea7 100644 --- a/arch/arm64/kernel/machine_kexec.c +++ b/arch/arm64/kernel/machine_kexec.c @@ -177,6 +177,7 @@ void machine_kexec(struct kimage *kimage) * the offline CPUs. Therefore, we must use the __* variant here. */ __flush_icache_range((uintptr_t)reboot_code_buffer, + (uintptr_t)reboot_code_buffer + arm64_relocate_new_kernel_size);
/* Flush the kimage list and its buffers. */