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    Subject[PATCH 1/1] arm64: kexec: machine_kexec should call __flush_icache_range
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    machine_kexec flushes the reboot_code_buffer from the icache
    after stopping the other cpus.

    Commit 3b8c9f1cdfc5 ("arm64: IPI each CPU after invalidating the I-cache
    for kernel mappings") added an IPI call to flush_icache_range, which
    causes a hang here, so replace the call with __flush_icache_range

    Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
    Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
    Cc: Catalin Marinas <catalin.marinas@arm.com>
    Cc: Will Deacon <will.deacon@arm.com>
    ---
    arch/arm64/kernel/machine_kexec.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/arch/arm64/kernel/machine_kexec.c b/arch/arm64/kernel/machine_kexec.c
    index f62effc..e8c0283 100644
    --- a/arch/arm64/kernel/machine_kexec.c
    +++ b/arch/arm64/kernel/machine_kexec.c
    @@ -184,7 +184,7 @@ 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,
    + __flush_icache_range((uintptr_t)reboot_code_buffer,
    arm64_relocate_new_kernel_size);

    /* Flush the kimage list and its buffers. */
    --
    1.8.3.1
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