|
|
|
|
|
|
by nneonneo
1640 days ago
|
|
|
On x86 you can use self-modifying code without explicitly flushing caches. However, if you execute the modified code soon after writing it, the penalty can be tens to hundreds of cycles (source: Agner Fog’s optimization manual). ARM quite famously requires the explicit cache flush, and will usually fail to work without it. However, some emulators, e.g. QEMU, don’t require the cache flush, which can lead to confusion if you usually test on emulators. |
|
|