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Re: [Qemu-devel] [5627] Add KVM support to QEMU


From: andrzej zaborowski
Subject: Re: [Qemu-devel] [5627] Add KVM support to QEMU
Date: Wed, 5 Nov 2008 17:19:23 +0100

2008/11/5 Anthony Liguori <address@hidden>:
> Revision: 5627
>          http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=5627
> Author:   aliguori
> Date:     2008-11-05 16:04:33 +0000 (Wed, 05 Nov 2008)
>
> Log Message:
> -----------
> Add KVM support to QEMU
>
> This patch adds very basic KVM support.  KVM is a kernel module for Linux that
> allows userspace programs to make use of hardware virtualization support.  It
> current supports x86 hardware virtualization using Intel VT-x or AMD-V.  It
> also supports IA64 VT-i, PPC 440, and S390.
>
> This patch only implements the bare minimum support to get a guest booting.  
> It
> has very little impact the rest of QEMU and attempts to integrate nicely with
> the rest of QEMU.
>
> Even though this implementation is basic, it is significantly faster than TCG.
> Booting and shutting down a Linux guest:
>
> w/TCG:  1:32.36 elapsed  84% CPU
>
> w/KVM:  0:31.14 elapsed  59% CPU
>
> Right now, KVM is disabled by default and must be explicitly enabled with
>  -enable-kvm.  We can enable it by default later when we have had better
> testing.
>
> Signed-off-by: Anthony Liguori <address@hidden>
>
> Modified Paths:
> --------------
>    trunk/Makefile.target
>    trunk/configure
>    trunk/cpu-defs.h
>    trunk/cpu-exec.c
>    trunk/exec.c
>    trunk/hw/acpi.c
>    trunk/monitor.c
>    trunk/target-i386/cpu.h
>    trunk/target-i386/helper.c
>    trunk/vl.c
>
> Modified: trunk/Makefile.target
> ===================================================================
> --- trunk/Makefile.target       2008-11-05 15:34:06 UTC (rev 5626)
> +++ trunk/Makefile.target       2008-11-05 16:04:33 UTC (rev 5627)
> @@ -183,6 +183,9 @@
>  endif
>  endif
>
> +kvm.o: CFLAGS+=$(KVM_CFLAGS)
> +kvm-all.o: CFLAGS+=$(KVM_CFLAGS)

The source seems to be missing, probably forgotten?

Cheers




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