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simulation of aarch64 store-exclusive instructions with backoff in QEMU
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From: |
Robert Henry |
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Subject: |
simulation of aarch64 store-exclusive instructions with backoff in QEMU TCG mode |
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Date: |
Tue, 15 Feb 2022 16:10:28 -0800 |
I'm wondering if there is any prior art in changing the implementation of the aarch64 store-exclusive instructions so that they fail with some additional backoff protocol. For example, if the store-exclusive instruction were to succeed, then it will actually fail with a probability of P, and thus forcing the surrounding aarch64 code to (typically) loop back and redo the load-exclusive/store-exclusive sequence.
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Robert Henry <=