On 6/5/23 12:59, Philippe Mathieu-Daudé wrote:
<libkern/OSCacheControl.h> describes sys_icache_invalidate() as "equivalent to sys_cache_control(kCacheFunctionPrepareForExecution)", having kCacheFunctionPrepareForExecution defined as:/* Prepare memory for execution. This should be called * after writing machine instructions to memory, before * executing them. It syncs the dcache and icache. [...] */ Since the dcache is also sync'd, we can avoid the sys_dcache_flush() call when both rx/rw pointers are equal. Suggested-by: Richard Henderson<richard.hender...@linaro.org> Signed-off-by: Philippe Mathieu-Daudé<phi...@linaro.org> --- Based-on:<20230605175647.88395-2-phi...@linaro.org> --- util/cacheflush.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)
Reviewed-by: Richard Henderson <richard.hender...@linaro.org> r~
