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authorPeter Maydell <peter.maydell@linaro.org>2018-06-26 17:50:41 +0100
committerPeter Maydell <peter.maydell@linaro.org>2018-06-26 17:50:41 +0100
commit55df6fcf5476b44bc1b95554e686ab3e91d725c5 (patch)
treefb36681917f253625bae410f6538a7f1a562a4ad /docs/replay.txt
parentd29183d3c0174e248b31bb2ee58b889f7baa3cfe (diff)
tcg: Support MMU protection regions smaller than TARGET_PAGE_SIZE
Add support for MMU protection regions that are smaller than TARGET_PAGE_SIZE. We do this by marking the TLB entry for those pages with a flag TLB_RECHECK. This flag causes us to always take the slow-path for accesses. In the slow path we can then special case them to always call tlb_fill() again, so we have the correct information for the exact address being accessed. This change allows us to handle reading and writing from small regions; we cannot deal with execution from the small region. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180620130619.11362-2-peter.maydell@linaro.org
Diffstat (limited to 'docs/replay.txt')
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