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Re: [Qemu-devel] [PATCH v3 2/5] Add vmchannel command line option.
From: |
Daniel P. Berrange |
Subject: |
Re: [Qemu-devel] [PATCH v3 2/5] Add vmchannel command line option. |
Date: |
Thu, 8 Jan 2009 19:35:45 +0000 |
User-agent: |
Mutt/1.4.1i |
On Thu, Jan 08, 2009 at 01:21:01PM -0600, Anthony Liguori wrote:
> Gleb Natapov wrote:
> >Signed-off-by: Gleb Natapov <address@hidden>
> >---
> >
> > vl.c | 75
> > +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
> > 1 files changed, 74 insertions(+), 1 deletions(-)
> >
> >diff --git a/vl.c b/vl.c
> >index 959be62..c076375 100644
> >--- a/vl.c
> >+++ b/vl.c
> >@@ -207,6 +207,13 @@ static int full_screen = 0;
> > static int no_frame = 0;
> > #endif
> > int no_quit = 0;
> >+#if defined(CONFIG_SLIRP)
> >+#define MAX_VMCHANNEL_DEVICES 4
> >+struct VMChannel {
> >+ CharDriverState *hd;
> >+ int port;
> >+} vmchannel_hds[MAX_VMCHANNEL_DEVICES];
> >+#endif
> > CharDriverState *serial_hds[MAX_SERIAL_PORTS];
> > CharDriverState *parallel_hds[MAX_PARALLEL_PORTS];
> > #ifdef TARGET_I386
> >@@ -3948,6 +3955,9 @@ static void help(int exitcode)
> > "-monitor dev redirect the monitor to char device 'dev'\n"
> > "-serial dev redirect the serial port to char device
> > 'dev'\n"
> > "-parallel dev redirect the parallel port to char device
> > 'dev'\n"
> >+#if defined(CONFIG_SLIRP)
> >+ "-vmchannel di:DI,dev redirect the vmchannel device with device
> >id DI, to char device 'dev'\n"
> >+#endif
> > "-pidfile file Write PID to 'file'\n"
> > "-S freeze CPU at startup (use 'c' to start
> > execution)\n"
> > "-s wait gdb connection to port\n"
> >@@ -4062,6 +4072,9 @@ enum {
> > QEMU_OPTION_monitor,
> > QEMU_OPTION_serial,
> > QEMU_OPTION_parallel,
> >+#if defined(CONFIG_SLIRP)
> >+ QEMU_OPTION_vmchannel,
> >+#endif
> >
>
> I think this would make more sense as an option to -net user. For instance:
>
> -net user,port=1024,chardev=unix:foo.sock
>
> Not the best syntax, but you get the idea. What do you think?
>
> It may be useful to use this functionality for other things too.
If I'm understanding correctly, the VM channel stuff has a hard
requirement for Slirp/user net setup, so could you just go one
step further and use the full char device syntax with -net, thus
eliminating the redundant 'user:' bit ?
-net char:[CHAR-DEV-OPTIONS],port=1024
Or
-net vmchan:[CHAR-DEV-OPTIONS],port=1024
Where 'CHAR-DEV-OPTIONS' is any of the stuff valid for -serial/-parallal
char device options
Daniel
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- [Qemu-devel] [PATCH v3 0/5] Marry slirp and qemu character device., Gleb Natapov, 2009/01/08
- [Qemu-devel] [PATCH v3 3/5] Add slirp_restrict option., Gleb Natapov, 2009/01/08
- [Qemu-devel] [PATCH v3 4/5] Add "restrict" and "ip" option to "user" net option, Gleb Natapov, 2009/01/08
- [Qemu-devel] [PATCH v3 5/5] Add support for vmchannel socket migration., Gleb Natapov, 2009/01/08
- Re: [Qemu-devel] [PATCH v3 0/5] Marry slirp and qemu character device., Anthony Liguori, 2009/01/08