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b61a40afca
Current cache probe and flush methods have some drawbacks: 1, Assume there are 3 cache levels and only 3 levels; 2, Assume L1 = I + D, L2 = V, L3 = S, V is exclusive, S is inclusive. However, the fact is I + D, I + D + V, I + D + S and I + D + V + S are all valid. So, refactor the cache probe and flush methods to adapt more types of cache hierarchy. Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Linux kernel
============
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