Date: Tue, 21 May 2013 13:40:09 -0400 From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> To: Roger Pau =?iso-8859-1?Q?Monn=E9?= <roger.pau@citrix.com> Cc: "freebsd-xen@freebsd.org" <freebsd-xen@freebsd.org>, xen-devel <xen-devel@lists.xen.org>, "freebsd-virtualization@freebsd.org" <freebsd-virtualization@freebsd.org>, "xen-users@lists.xen.org" <xen-users@lists.xen.org> Subject: Re: [Xen-devel] FreeBSD PVHVM call for testing Message-ID: <20130521174009.GA5011@phenom.dumpdata.com> In-Reply-To: <519131D8.9010307@citrix.com> References: <519131D8.9010307@citrix.com>
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On Mon, May 13, 2013 at 08:32:56PM +0200, Roger Pau Monné wrote: > Hello, > > Recently Justin T Gibbs, Will Andrews and myself have been working on > improving the Xen support in FreeBSD. The main goal of this was to bring > full PVHVM support to FreeBSD, right now FreeBSD is only using PV > interfaces for disk and network interfaces when running as a HVM guest. > The main benefits of this changes are that Xen virtual interrupts (event > channels) are now delivered to the guest using a vector callback > injection, that is a per-cpu mechanism that allows each vCPU to have > different interrupts assigned, so for example network and disk > interrupts are delivered to different vCPUs in order to improve > performance. With this changes FreeBSD also uses PV timers when running > as an HVM guest, which should provide better time keeping and reduce the > virtualization overhead, since emulated timers are no longer used. PV > IPIs can also be used inside a HVM guest, but this will be implemented > later. > > Right now the code is in a state where it can be tested by users, so we > would like to encourage FreeBSD and Xen users to test it and provide > feedback. > > The code is available in the following git repository, under the branch > pvhvm_v5: > > http://xenbits.xen.org/gitweb/?p=people/royger/freebsd.git;a=summary > > Also, I've created a wiki page that explains how to set up a FreeBSD > PVHVM for testing: > > http://wiki.xen.org/wiki/Testing_FreeBSD_PVHVM I tried on my Linux box to do this: HEAD is now at 9b25356... xen-netfront: fix detach of network interfaces konrad@phenom:~/git/freebsd$ make kernel-toolchain && make buildkernel KERNCONF=XENHVM && make installkernel KERNCONF=XENHVM Makefile:123: *** missing separator. Stop. As I thought it would compile the same way you can compile NetBSD - that is even on non-BSD distros. Is that not the case? Should I only do this under a FreeBSD guest?help
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