Since 8dfa3a5e "target-ppc: Add "compat" CPU option" (which was a part of
client-architecture-support patchset) there is a "compat" option
of "-cpu". However it was not documented at all and this is what this
patch is trying to do.
Signed-off-by: Alexey Kardashevskiy <a...@ozlabs.ru>
---
After the patch:
[aik@vpl2 ~]$ ./qemu-system-ppc64 --help | grep -a2 -- "-cpu cpu"
-cpu cpu[,compat=power6|power7|power8]
select CPU ('-cpu help' for list)
compat= processor compatibility mode
ka1:/scratch/alexey/p/qemu-build/x86_x86_64$
./x86_64-softmmu/qemu-system-x86_64 -help | grep -a2 -- "-cpu cpu"
-cpu cpu select CPU ('-cpu help' for list)
-smp [cpus=]n[,maxcpus=cpus][,cores=cores][,threads=threads][,sockets=sockets]
set the number of CPUs to 'n' [default=1]
qemu-doc.html:
-cpu model[,compat=mode]
Select CPU model (-cpu help for list and additional feature selection)
compat=power6|power7|power8
Enables POWER architecture compatibility mode. ‘power6’ enables
PowerISA 2.05-compatibility mode, ‘power7’ - 2.06, ‘power8’ - 2.07. ‘mode’ is
only supported by a PPC64-pseries machine.
---
Changes:
v2:
* only show new option for PPC
---
qemu-options.hx | 15 +++++++++++++--
1 file changed, 13 insertions(+), 2 deletions(-)
diff --git a/qemu-options.hx b/qemu-options.hx
index c513352..5214798 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -84,11 +84,22 @@ HXCOMM Deprecated by -machine
DEF("M", HAS_ARG, QEMU_OPTION_M, "", QEMU_ARCH_ALL)
DEF("cpu", HAS_ARG, QEMU_OPTION_cpu,
- "-cpu cpu select CPU ('-cpu help' for list)\n", QEMU_ARCH_ALL)
+ "-cpu cpu select CPU ('-cpu help' for list)\n", QEMU_ARCH_ALL &
~QEMU_ARCH_PPC)
+DEF("cpu", HAS_ARG, QEMU_OPTION_cpu_ppc,
+ "-cpu cpu[,compat=power6|power7|power8]\n"
+ " select CPU ('-cpu help' for list)\n"
+ " compat= processor compatibility mode\n", QEMU_ARCH_PPC)
STEXI
-@item -cpu @var{model}
+@item -cpu @var{model}[,compat=@var{mode}]
@findex -cpu
Select CPU model (@code{-cpu help} for list and additional feature selection)
+@table @option
+@item compat=power6|power7|power8
+Enables POWER architecture compatibility mode.
+@samp{power6} enables PowerISA 2.05-compatibility mode,
+@samp{power7} - 2.06, @samp{power8} - 2.07. @samp{mode} is only supported by
+a PPC64-pseries machine.
+@end table
ETEXI
DEF("smp", HAS_ARG, QEMU_OPTION_smp,
--
2.0.0
