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https://github.com/yuzu-emu/unicorn.git
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f02b6492a5
The memory region reference is increased when insert a range into flatview range array, then decreased by destroy flatview. If some flat range merged by flatview_simplify, the memory region reference can not be decreased by destroy flatview any more. In this case, start virtual machine by the command line: qemu-system-x86_64 -name guest=ubuntu,debug-threads=on -machine pc,accel=kvm,usb=off,dump-guest-core=off -cpu host -m 16384 -realtime mlock=off -smp 8,sockets=2,cores=4,threads=1 -object memory-backend-file,id=ram-node0,prealloc=yes,mem-path=/dev/hugepages,share=yes,size=8589934592 -numa node,nodeid=0,cpus=0-3,memdev=ram-node0 -object memory-backend-file,id=ram-node1,prealloc=yes,mem-path=/dev/hugepages,share=yes,size=8589934592 -numa node,nodeid=1,cpus=4-7,memdev=ram-node1 -no-user-config -nodefaults -rtc base=utc -no-shutdown -boot strict=on -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -device virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x2 -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x3 -drive file=ubuntu.qcow2,format=qcow2,if=none,id=drive-virtio-disk0,cache=none,aio=native -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -device usb-tablet,id=input0,bus=usb.0,port=1 -vnc 0.0.0.0:0 -device VGA,id=video0,vgamem_mb=16,bus=pci.0,addr=0x5 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6 -msg timestamp=on And run the script in guest OS: while true do setpci -s 00:06.0 04.b=03 setpci -s 00:06.0 04.b=07 done I found the reference of node0 HostMemoryBackendFile is a big one. (gdb) p numa_info[0]->node_memdev->parent.ref $6 = 1636278 (gdb) Backports commit 838ec1177c45812ff177a35ff93990e9eb7f70c3 from qemu |
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| .. | ||
| accel | ||
| crypto | ||
| default-configs | ||
| docs | ||
| fpu | ||
| hw | ||
| include | ||
| qapi | ||
| qobject | ||
| qom | ||
| scripts | ||
| target | ||
| tcg | ||
| util | ||
| aarch64.h | ||
| aarch64eb.h | ||
| accel.c | ||
| arm.h | ||
| armeb.h | ||
| CODING_STYLE | ||
| configure | ||
| COPYING | ||
| COPYING.LIB | ||
| cpus.c | ||
| exec.c | ||
| gen_all_header.sh | ||
| glib_compat.c | ||
| HACKING | ||
| header_gen.py | ||
| ioport.c | ||
| LICENSE | ||
| m68k.h | ||
| Makefile | ||
| Makefile.objs | ||
| Makefile.target | ||
| memory.c | ||
| memory_ldst.inc.c | ||
| memory_mapping.c | ||
| mips.h | ||
| mips64.h | ||
| mips64el.h | ||
| mipsel.h | ||
| powerpc.h | ||
| qemu-timer.c | ||
| riscv32.h | ||
| riscv64.h | ||
| rules.mak | ||
| sparc.h | ||
| sparc64.h | ||
| unicorn_common.h | ||
| VERSION | ||
| vl.c | ||
| vl.h | ||
| x86_64.h | ||