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Cache attribute write back/write allocate for Cortex-M4

nothing

What is different between write back with write allocate and write with non write allocate on Cortex-M4.

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  • +1 in reply to nothing

    I konw your meaning, your precondition is write-miss policy in write back and CM4.

    first, both write-through and write-back policy can use write allocate and write no allocate when write-miss.

    second, write-back policy use write allocate usually.

    so i think it should be the write allocate even though it has write no allocate attribute, maybe it has a parameter that can be configured or has the priority.

    you can look up it in ARM architecture Manual. I will tell you if I find out the correct answer.

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  • +1 in reply to nothing

    I konw your meaning, your precondition is write-miss policy in write back and CM4.

    first, both write-through and write-back policy can use write allocate and write no allocate when write-miss.

    second, write-back policy use write allocate usually.

    so i think it should be the write allocate even though it has write no allocate attribute, maybe it has a parameter that can be configured or has the priority.

    you can look up it in ARM architecture Manual. I will tell you if I find out the correct answer.

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