AI代码解释 -kernel arch/riscv64/u-boot-v2023.10-riscv64/u-boot.bin--nographic-d../bin/disk-riscv64.img-m 4G-smp2,cores=2,threads=1,sockets=1-boot order=d-d cpu_reset,guest_errors,trace:virtio*,trace:e1000e_rx*,trace:e1000e_tx*,trace:e1000e_irq*-s-machine virt,memory-backend=d...
memory-backend='id'传统和选项的替代方案。允许使用内存后端作为主 RAM。-mem-pathmem-prealloc例如:-objectmemory-backend-file,id=pc.ram,size=512M,mem-path=/hugetlbfs,prealloc=on,share=on-machinememory-backend=pc.ram-m512M迁移兼容性说明:作为后端id,如果预期迁移到/从旧的QEMU(<5.0)迁移,则应使用...
#虚拟机名称 -machine q35,vmport=off,dump-guest-core=off,mem-merge=off,hmat=on,usb=off,memory-backend=pc.ram #机型,VMWareIO端口仿真,在核心转储中包含来宾内存,内存合并支持,ACPI异构内存属性表,USB设备,内存 -object memory-backend-file,id=pc.ram,size=512M,mem-path=/hugetlbfs,prealloc=on,share...
MemoryRegion *(*get_memory_region)(PCDIMMDevice *dimm); } PCDIMMDeviceClass; 每个PCDIMMDevice对象都与 HostMemoryBackend对象相关联。HostMemoryBackend也是使用QEMU中的面向对象编程模型QOM定义的。HostMemoryBackend定义在include/sysemu/hostmem.h中。HostMemoryBackend对象包含了客户机内存对应的真正的主机内存,这些...
[root@localhost~]#/usr/libexec/qemu-kvm\>-smpcores=2,threads=1,sockets=2\>-m2G\>-objectmemory-backend-ram,id=mem0,size=1G\>-objectmemory-backend-ram,id=mem1,size=1G\>-numanode,memdev=mem0,cpus=0-1,nodeid=0\>-numanode,memdev=mem1,cpus=2-3,nodeid=1\>-bootd\>-cdrom'/media...
首先增加了一个memory-backend对象,这里与初qemu命令行的操作类似;我们主要看下device_add的过程,它增加了一个pc-dimm设备,memdev参数为mem1,也就是之前的memory backend对象: qmp_device_add() -> qdev_device_add() --- dev = qdev_new(driver); // where is "driver" ? see implied_opt_name ......
-object memory-backend-file,id=mem,size=1G,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -vnc :1 --enable-kvm \ -netdev tap,id=tapnet,ifname=vnet0,script=no -device rtl8139,netdev=tapnet,mac=52:54:00:12:34:58 ...
用Qemu模拟一个下面的Numa架构: 启动命令如下: #!/bin/bash QEMU=qemu-system-aarch64 sudo$QEMU\ -M virt,gic-version=3,virtualization=on,type=virt \ -cpu cortex-a57 -nographic -m 4G \ -smp cores=4,threads=1,sockets=2 \ -object memory-backend-ram,id=mem0,size=2G \ ...
pci_memory:给PCI设备分配的内存 rom_memory:主机在自己的虚拟内存上给虚拟机分配的物理内存,但是这块内存只可读不可写入 lowmem:因为一些有传统设备的虚拟机,其设备必须使用一些地址空间在4GB以下的内存,所以设置了这个变量,源代码中关于lowmem的注释如下
Memory inside a "memory-backend" is actually mmapped by RAMBlock through qemu_ram_alloc() (exec.c). Each RAMBlock has a pointer to the mmap memory and also a ram_addr_t offset. This ram_addr_t offset is interesting because it is in a global namespace so the RAMBlock can be looked...