Date: Tue, 02 Dec 2014 15:31:23 +0000 From: Julien Grall <julien.grall@linaro.org> To: Andrew Turner <andrew@fubar.geek.nz> Cc: Ian Campbell <Ian.Campbell@citrix.com>, Stefano Stabellini <Stefano.Stabellini@eu.citrix.com>, "xen-devel@lists.xen.org" <xen-devel@lists.xen.org>, freebsd-xen@freebsd.org, freebsd-arm@freebsd.org, Denis Schneider <v1ne2go@gmail.com>, gibbs@freebsd.org Subject: Re: [RFC v2] Add support for Xen ARM guest on FreeBSD Message-ID: <547DDB4B.6060506@linaro.org> In-Reply-To: <20141128135737.23a71643@bender.lan> References: <54726138.3090003@linaro.org> <20141128135737.23a71643@bender.lan>
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Hello Andrew, On 28/11/2014 13:57, Andrew Turner wrote: > On Sun, 23 Nov 2014 22:35:36 +0000 > Julien Grall <julien.grall@linaro.org> wrote: >> Major changes in this new version: >> * Add Device Tree support via Linux Boot ABI >> * Add zImage support >> * Netfront support >> * Blkfront fixes >> * DOM0 support (separate branch see below) >> >> The former item is very hackish. I was wondering if there is another >> way to do it? Or maybe we should support FreeBSD Bootloader in ARM >> guest? > > I think using the loader is the correct way to handle booting in Xen. It > allows us to relocate the dtb as required. It look like a zImage then > use the Xen console to interact with the user. Thanks, I will give a look to this solution. >> >> The patch series is divided in X parts: >> * #1 - #14: Clean up and bug fixes for Xen. They can be >> applied without the rest of the series >> * #15 - #19: Update Xen interface to 4.4 and fix >> compilation. It's required for ARM. >> * #20 - #26: Update Xen code to support ARM >> * #27 - #33: Rework the event channel code for supporting >> ARM. I will work with Royger to come with a common interface with x86 >> * #34 - #36: Add support for ARM in Xen code >> * #37 - #46: ARM bug fixes and new features. Some of thoses >> patches (#37 - #40) could be applied without the rest of the series >> * #47 - #48: Add Xen ARM platform > > I have committed patches 30 and 40 as they look good. Thanks! > I'm not familiar > with the code to review 37 or 38, however from my quick look at 38 I > appears _bus_dmamap_load_buffer does take in to account buflen and > dmat->maxsegsz when setting sgsize just not dmat->alignment. Right, I guess I could just keep the roundup2. > > ... >> >> TODO: >> * Add SMP/PSCI support in FreeBSD. Could be useful other >> platform too > > Adding PSCI support is on my TODO lost for arm64, however I don't > expect to get on ti in until early next year. BTW, what is the actual status of the ARM64 port? I plan to give a look for adding Xen support too. Regards, -- Julien Grall
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