Date: Tue, 14 May 2013 10:19:07 +0100 From: George Dunlap <George.Dunlap@eu.citrix.com> To: =?ISO-8859-1?Q?Roger_Pau_Monn=E9?= <roger.pau@citrix.com>, Dario Faggioli <dario.faggioli@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: <CAFLBxZZ1eNf2UoHf1NvWd_cfomSChr0LDYyfFcXpYROg8RNC8Q@mail.gmail.com> In-Reply-To: <519131D8.9010307@citrix.com> References: <519131D8.9010307@citrix.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Mon, May 13, 2013 at 7:32 PM, Roger Pau Monn=E9 <roger.pau@citrix.com> w= rote: > 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. Is this something we should try to put on the Xen.org blog? -George
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?CAFLBxZZ1eNf2UoHf1NvWd_cfomSChr0LDYyfFcXpYROg8RNC8Q>