On 18/07/2022 22:31, ch...@dalessio.org wrote: > I am trying to run Xen-4.16.1-4.fc36 on Fedora 36 on a brand new Lenovo > ThinkStation p620, but I keep getting the following error booting the > Xen kernel. > > Panic on CPU 0: > FATAL TRAP: vec 7, #NM[0000] > > Version info: > Name : xen > Version : 4.16.1 > Release : 4.fc36
So https://koji.fedoraproject.org/koji/buildinfo?buildID=1991182 should be the binary build in use, and looking at the debug syms, it really does have: ffff82d040439c80 <amd_iommu_init>: ... ffff82d04043a00c: 0f 6e c2 movd %edx,%mm0 ffff82d04043a00f: 0f 62 c0 punpckldq %mm0,%mm0 ffff82d04043a012: 49 89 87 c0 00 00 00 mov %rax,0xc0(%r15) ffff82d04043a019: 41 0f 7f 87 d0 00 00 movq %mm0,0xd0(%r15) ffff82d04043a020: 00 So hardware is correct - this build of Xen is nonsense. The binary is also full of .annobin_ stuff which appears to be some kind of GCC plugin for watermarking. Michael: Any idea what's going on here? Something has caused GCC to emit some MMX logic which is ultimately why things exploded, but this probably means that some of the build CFLAGS got dropped. Thanks, ~Andrew
