On Mon, Jun 19, 2023 at 04:31:19PM +0200, Solene Rapenne wrote: > Hi, I can't get lang/go to compile on my system, which is a Xen VM. > > I can compile almost anything, including qt or webkitgtk, but lang/go > is failing with various errors each time. I'm not sure it's a XEN bug > though, maybe an issue with recent IBT?
Yes, it's the IBT diff in snaps breaking the bootstrapping process. An older go binary or one compiled on a another machine where it compiles works quite well (but not perfectly) with that diff. > FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,HTT,SSE3,PCLMUL,SSSE3,FMA3,CX16,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,AES,XSAVE,AVX,F16C,RDRAND,HV,NXE,MMXX,FFXSR,PAGE1GB,RDTSCP,LONG,LAHF,AMCR8,ABM,SSE4A,MASSE,3DNOWP,DBKP,ITSC,FSGSBASE,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,RDSEED,ADX,SMAP,CLFLUSHOPT,CLWB,SHA,UMIP,PKU,IBPB,IBRS,STIBP,SSBD,XSAVEOPT,XSAVEC,XGETBV1,XSAVES As far as I know machines with XSAVES are affected as long as they don't take the XSAVES disabling path in the ibt diff. If I force my machines with XSAVES to do the eax &= ~XSAVE_XSAVES thing then go compiles and works. That's as far as I got with debugging. I have no idea if this is a bug in the kernel diff or in lang/go or both.
