Background: We are running PMDK on Arm64 for persistent memory operation. Now we meet an issue for running test suites. PMDK needs to check if Arm64 supports CPU feature: DCPOP, to decide to execute which CPU flushing command. But with the commit: https://bugs.kde.org/show_bug.cgi?id=381556, the CPU features have been masked, so we can not detect the real CPU features such as DCPOP. That will induce that we can not use cpu flushing cmd: "dc cvap" to flushing the CPU, which break the persistent memory working flow. Is there any potential fix for this? Since Permsist memory is more and more important now, and memcheck for persist memory will be an important user scenario for valgrind. ENV: Arm v8.2 Qemu Guest: processor : 7 BogoMIPS : 200.00 Features : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm jscvt fcma dcpop asimddp asimdfhm CPU implementer : 0x48 CPU architecture: 8 CPU variant : 0x1 CPU part : 0xd01 CPU revision : 0