physmem: Factor cpu_physical_memory_dirty_bits_cleared() out

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Tested-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20240219061731.232570-1-npiggin@gmail.com>
[PMD: Split patch in 2: part 1/2]
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Link: https://lore.kernel.org/r/20240312201458.79532-3-philmd@linaro.org
Signed-off-by: Peter Xu <peterx@redhat.com>
2 files changed