Date: Wed, 06 May 2026 03:03:56 +0000 From: bugzilla-noreply@freebsd.org To: virtualization@FreeBSD.org Subject: [Bug 292895] Reproducible ARM64/bhyve panic on CIX/Cortex-A720 platforms Message-ID: <bug-292895-27103-OPzmiM0f9d@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-292895-27103@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=292895 --- Comment #16 from Michael Dexter <editor@callfortesting.org> --- Giving that fix a try: devmem2 will build on FreeBSD, only throwing a few errors. This dd(1) command should be equivalent to the read operation of devmem2 as called by smmu-evtq-fix.sh: dd if=/dev/mem bs=1 skip=$((0x0b010020)) count=4 | hexdump -C However, the read causes a panic on 16.0-CURRENT on a MS-R1 and the Orange Pi 6+, which share the same CPU: panic: pmap_map_io_transient: TODO: Map out of DMAP data cpuid = 9 time = 1778010919 KDB: stack backtrace: db_trace_self() at db_trace_self db_trace_self_wrapper() at db_trace_self_wrapper+0x38 vpanic() at vpanic+0x1b8 panic() at panic+0x48 pmap_map_io_transient() at pmap_map_io_transient+0x184 uiomove_fromphys() at uiomove_fromphys+0x158 memrw() at memrw+0x1a8 devfs_read_f() at devfs_read_f+0xf8 dofileread() at dofileread+0x74 kern_readv() at kern_readv+0x4c sys_read() at sys_read+0xc0 do_el0_sync() at do_el0_sync+0x600 handle_el0_sync() at handle_el0_sync+0x4c --- exception, esr 0x56000000 KDB: enter: panic This happens with or without vmm.ko loaded. -- You are receiving this mail because: You are the assignee for the bug.home | help
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