On Wed, Jun 19, 2019 at 11:22:23AM +0800, Meiyo Peng wrote:
Toggle quote (19 lines)
> Hi Florian,
>
> Florian Pelz writes:
>
> > @example
> > -qemu-system-x86_64 -m 1024 -smp 1 \
> > +qemu-system-x86_64 -m 1024 -smp 1 -enable-kvm \
> ...
> > -The ordering of the drives matters.
> > +The ordering of the drives matters. @code{-enable-kvm} is optional, but
> > +significantly improves performance, @pxref{Running Guix in a VM}.
>
> "-enable-kvm" is deprecated. Please use "-accel kvm" instead. QEMU
> will probably support "-enable-kvm" option forever but "-accel kvm" is
> recommended.
>
>
>
Thank you Meiyo Peng! I cannot find an official deprecation, but
-accel seems to be recommended in general. But I am unsure. I like
-accel; it seems less KVM-specific, that is better.
However, I cannot find -accel kvm in Debian Jessie’s manpage at
and in a Debian Stretch VM it says: qemu-syems-x86_64: -accel: invalid
option
Maybe it is better to wait three more years until switching to -accel
so instructions work on Debian (LTS)? If Guix wants to switch now
though, see the attached patches.
Regards,
Florian
From 0ffc2d9d31f481cccb5d6a8a5e17a6d836d0e09c Mon Sep 17 00:00:00 2001
for QEMU in manual.
Suggested by Meiyo Peng <meiyo@riseup.net>.
* doc/guix.texi (Running Guix in a Virtual Machine): Change it.
---
doc/guix.texi | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
Toggle diff (24 lines)
diff --git a/doc/guix.texi b/doc/guix.texi
index 65c3b8a7f1..97620eb20c 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -25406,7 +25406,7 @@ vm-image} on x86_64 hardware:
@example
$ qemu-system-x86_64 \
-net user -net nic,model=virtio \
- -enable-kvm -m 512 \
+ -accel kvm -m 512 \
-device virtio-blk,drive=myhd \
-drive if=none,file=/tmp/qemu-image,id=myhd
@end example
@@ -25429,7 +25429,7 @@ create a NIC, the boot will fail. Assuming your hardware platform is
x86_64, you can get a list of available NIC models by running
@command{qemu-system-x86_64 -net nic,model=help}.
-@item -enable-kvm
+@item -accel kvm
If your system has hardware virtualization extensions, enabling the
virtual machine support (KVM) of the Linux kernel will make things run
faster.
--
2.22.0
From c3c6bc15e3052a92acf9bdb3f5156fe939d14c33 Mon Sep 17 00:00:00 2001
well.
* doc (Installing Guix in a VM): Add '-accel kvm' to example.
---
doc/guix.texi | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
Toggle diff (23 lines)
diff --git a/doc/guix.texi b/doc/guix.texi
index 97620eb20c..3fec743d23 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -2430,13 +2430,14 @@ The resulting file will be much smaller than 50 GB (typically less than
Boot the USB installation image in an VM:
@example
-qemu-system-x86_64 -m 1024 -smp 1 \
+qemu-system-x86_64 -m 1024 -smp 1 -accel kvm \
-net user -net nic,model=virtio -boot menu=on \
-drive file=guix-system-install-@value{VERSION}.@var{system}.iso \
-drive file=guixsd.img
@end example
-The ordering of the drives matters.
+The ordering of the drives matters. @code{-accel kvm} is optional, but
+significantly improves performance, @pxref{Running Guix in a VM}.
In the VM console, quickly press the @kbd{F12} key to enter the boot
menu. Then press the @kbd{2} key and the @kbd{RET} key to validate your
--
2.22.0
