411 REFERENCE · Wikibooks
QEMU/Invocation
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
QEMU options
QEMU is called with the following commands on host systems with x86 processor architecture.
http://qemu-buch.de/de/index.php?title=QEMU-KVM-Buch/_Anhang/_Startoptionen_von_QEMU_und_KVM
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. http://www.linux-kvm.org/images/c/c5/2011-forum-native-linux-kvm-tool.pdf
Some distributions call with qemu-system-x86_64 or qemu-kvm.
Help
-h shows the help
Debugging
-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
Configure like this :
./configure --enable-trace-backends=simple
Run like this :
qemu -trace events=/tmp/events ... # your normal QEMU invocation
http://wiki.qemu.org/Features/Tracing
http://git.qemu-project.org/?p=qemu.git;a=blob_plain;f=docs/tracing.txt;hb=HEAD