DavidSpickett wrote: So if you have code that wants to use SVE2 and may run on an SME only device with this older kernel, I think you could make it check for HWCAP_SVE and HWCAP2_SVE2. As the Architecture manual says: ``` FEAT_SVE2, Scalable Vector Extension version 2 <...> If FEAT_SVE2 is implemented, then FEAT_SVE is implemented. ``` Meaning that from userspace: * HWCAP_SVE = sve only * HWCAP2_SVE2 + HWCAP_SVE = sve and sve2 (and if you have SME, in streaming mode too) * HWCAP2_SVE2 = sve only in streaming mode (because you can't have SVE2 only, unless you have SME and this buggy kernel version)
If you are making changes like this, I can double check with Arm's kernel team that your approach is what they expect software to do. I think what I've suggested would work, but not sure that the kernel authors want us doing it that way. https://github.com/llvm/llvm-project/pull/135563 _______________________________________________ lldb-commits mailing list lldb-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-commits
