in unstable (changeset aeaa3c83f6e5). Tested on a dual Opteron x86-64
machine with 4GB of memory and a tg3 modified to only DMA below 2GB.
- swiotlb_dma_supported() checked that the device DMA mask was equal
or bigger than 4GB, when in fact all that's needed is that the device
be able to DMA into the swiotlb aperture (1GB on my AMD x86-64
machine). Some device are actually only 31-bit DMA capable, so this
would've tripped them.
- On some platforms, PCI unmaps and syncs are nops, so there's no need to
keep track of the dma_addr they need after the initial mapping. The
DMA API supports this via the DECLARE_PCI_UNMAP_ADDR macros (see
Documentation/DMA-mapping.txt). Since the swiotlb code does make us of
the dma_addr for swiotlb_unmap_xxx and (more importantly)
swiotlb_dma_sync_xxx, we need to define them to something
meaningful.
Signed-Off-By: Muli Ben-Yehuda <mulix@mulix.org>
The virq triggers a scan for domains which have gone away, and then
removes those domains.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>
vmx_platform.c/inst_copy_from_guest() now uses vmx_copy. Also shored up
vmx_copy to handle copies when paging is enabled and improved its error
handling.
Signed-Off-By: Leendert van Doorn <leendert@watson.ibm.com>
with _PAGE_PRESENT being missing from init_mm's pmd
entry (*pmd_k).
Signed-off-by: Jun Nakajima <jun.nakajima@intel.com>
Signed-off-by: Keir Fraser <keir@xensource.com>
- page is moved next to store/console pages -- these are never put in the
free page pool by the domain
- xen_start_info is now a pointer to the original page instead of the copy
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>
Mostly this makes the tap code work again with all of the changes that
have happened to the block drivers recently. We now use a shared page
per VBD (to the driver), and handle control information through the
store. The taplib interfaces have changed to be based around per-vbd
data structures that you can attach arbitrary handlers for.
There is also initial code for a user-level blockback driver, which
aims to get around the use of loopbacks for file-based vbds. Still
plenty of work to do here -- this is a working incremental checkin and
I'm away from this for the next four weeks.
Signed-off-by: Andrew Warfield <andrew.warfield@cl.cam.ac.uk>
- translate console mfn to pfn
- unbind/bind console evtchn
- recover console mfn on restore
- trigger xenconsoled refresh after mfn is put in store
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>
Also add simple read/write/rm clients for command line access to the
store (using the xenbus_dev store connection).
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>
The driver exports xs_talkv to user-space, allowing programs running in
the domain to use the kernel's xenbus connection. Intended use is driver
domain device configuration where the driver domain is not the domain
running xenstored.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>
