QEMU/Invocation
QEMU options[edit | edit source]
QEMU is called with the following commands on host systems with x86 processor architecture. [1] The parameter Disk_image refers to the image of the first IDE hard disk (disk 0).
x86 architecture (32-bit):
Host ~ $ qemu-system-i386 [options] [disk_image]
x86 architecture (64 bit):
Host ~ $ qemu-system-x86_64 [options] [disk_image]
QEMU was called with 'qemu' before version 1.0.
Host ~ $ qemu [options] [disk_image]
The kernel-based virtual machine is often called with kvm instead of qemu. This is confusing, because the Native Linux KVM Tool is also invoked like that as well. [2] Some distributions call with qemu-system-x86_64 or qemu-kvm.
Help[edit | edit source]
-h shows the help
Debugging[edit | edit source]
-d item1,...
Writes the log file to stderr. The following options are passed with commas to the command like : qemu -d int,cpu use -d help to get a full list.
-d out_asm
Show generated host assembly code for each compiled Translation-Block (TB)
-d in_asm
Show input assembly code for each compiled TB
-d op
Shows micro operations for each compiled TB
-d op_opt
show micro ops after optimization
-d op_ind
Show micro ops before indirect lowering
-d int
Show interrupts/exceptions in short format
-d exec
Show trace before each executed TB (lots of logs)
-d cpu
Show CPU registers before entering a TB (lots of logs)
-d mmu
Log MMU-related activities
-d pcall
x86 only: show protected mode far calls/returns/exceptions
-d cpu_reset
show CPU state before CPU resets
-d unimp
Log unimplemented functionality
-d guest_errors
Log when the guest OS does something invalid (eg accessing a non-existent register)
-d page
Dump pages at beginning of user mode emulation
-d nochain
Do not chain compiled TBs so that "exec" and "cpu" show complete traces
Tracing[edit | edit source]
Configure like this :
./configure --enable-trace-backends=simple
Run like this :
qemu -trace events=/tmp/events ... # your normal QEMU invocation