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由 Anton Ivanov 提交于
Changing protection is a very high cost operation in UML because in addition to an extra syscall it also interrupts mmap merge sequences generated by the tlb. While the condition is not particularly common it is worth avoiding. Signed-off-by: NAnton Ivanov <anton.ivanov@cambridgegreys.com> Signed-off-by: NRichard Weinberger <richard@nod.at>
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