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2011-07-17xen_console: support the new extended xenstore protocolStefano Stabellini1-0/+12
Since CS 21994 on xen-unstable.hg and CS 466608f3a32e1f9808acdf832a5843af37e5fcec on qemu-xen-unstable.git, few changes have been introduced to the PV console xenstore protocol, as described by the document docs/misc/console.txt under xen-unstable.hg. From the Qemu point of view, very few modifications are needed to correctly support the protocol: read from xenstore the "output" node that tell us what the output of the PV console is going to be. In case the output is a tty, write to xenstore the device name. Changes in v2: - fix error paths: free malloc'ed strings and close the xenstore connection before returning; - remove useless snprintf in xenstore_store_pv_console_info if i == 0. Changes in v3: - replace xs_daemon_open/xs_daemon_close with xs_open/xs_close. Changes in v4: - add a compatibility implementation of xs_open/xs_close. Changes in v5: - fix code style. [agraf] fix build error due to missing stub Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2011-06-19xen: Add xc_domain_add_to_physmap to xen_interface.Anthony PERARD1-0/+14
This function will be used to support sync dirty bitmap. This come with a check against every Xen release, and special implementation for Xen version that doesn't have this specific call. This function will not be usable with Xen 3.3 because the behavior is different. Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2011-05-08xen: Initialize event channels and io ringsArun Sharma1-0/+2
Open and bind event channels; map ioreq and buffered ioreq rings. Signed-off-by: Arun Sharma <arun.sharma@intel.com> Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Acked-by: Alexander Graf <agraf@suse.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2011-05-08xen: Introduce the Xen mapcacheJun Nakajima1-0/+9
On IA32 host or IA32 PAE host, at present, generally, we can't create an HVM guest with more than 2G memory, because generally it's almost impossible for Qemu to find a large enough and consecutive virtual address space to map an HVM guest's whole physical address space. The attached patch fixes this issue using dynamic mapping based on little blocks of memory. Each call to qemu_get_ram_ptr makes a call to qemu_map_cache with the lock option, so mapcache will not unmap these ram_ptr. Blocks that do not belong to the RAM, but usually to a device ROM or to a framebuffer, are handled in a separate function. So the whole RAMBlock can be map. Signed-off-by: Jun Nakajima <jun.nakajima@intel.com> Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2011-05-08xen: Support new libxc calls from xen unstable.Anthony PERARD1-14/+81
This patch updates the libxenctrl calls in Qemu to use the new interface, otherwise Qemu wouldn't be able to build against new versions of the library. We check libxenctrl version in configure, from Xen 3.3.0 to Xen unstable. Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Acked-by: Alexander Graf <agraf@suse.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2009-09-12Fix xen build after sys-queue renamingJan Kiszka1-1/+1
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-04-22xen: backend driver core (Gerd Hoffmann)aliguori1-0/+34
This patch adds infrastructure for xen backend drivers living in qemu, so drivers don't need to implement common stuff on their own. It's mostly xenbus management stuff: some functions to access xentore, setting up xenstore watches, callbacks on device discovery and state changes, handle event channel, ... Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7220 c046a42c-6fe2-441c-8c8c-71466251a162