* free memory on release
* invalidate p2m entry when unmapping grants
* check for alloc failure of idx_map
* add DONTCOPY vma flag
* hook for clearing ptes when a vma is freed by the kernel
From: Geoffrey Lefebvre <geoffrey@cs.ubc.ca>
Signed-off-by: Keir Fraser <keir@xensource.com>
mappings of the vsyscall page. This matches native behaviour by
setting the U bit on the L2-L4 page table entries and controlling
access using the L1 entries.
Signed-off-by: Ian Campbell <ian.campbell@xensource.com>
This is necessary for kexec/kdump for xen/ia64. kexec-tools needs to know
real machine's memory map.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
This enables the switch to the generic flavor ia64 kernel for the -xen
and -xen0 kernels. -xenU is changed to a CONFIG_IA64_XEN build.
Signed-off-by: Alex Williamson <alex.williamson@hp.com>
This allows us to easily switch between hardware or software iommu and
simple remapping. The Xen machine vector is only intended for domU
guests at this point.
Signed-off-by: Alex Williamson <alex.williamson@hp.com>
This paravirtualizes the iommu driver for HP Integrity systems. This
allows dom0 to use the iommu just as it would on native hardware.
Signed-off-by: Alex Williamson <alex.williamson@hp.com>
Paravirtualize our copy of swiotlb. A lot of the s/virt_to_phys/virt_to_bus
converstions have already been done in upstream, so I won't special case
them here.
Signed-off-by: Alex Williamson <alex.williamson@hp.com>
We get a bad pointer dereference if we don't fill something in
here. -1 will give us a global allocation, which is good enough
until we have better NUMA support.
Signed-off-by: Alex Williamson <alex.williamson@hp.com>
These will be paravirtualized in upcoming commits. We're copying
lib/swiotlb.c into arch/ia64/xen/swiotlb.c simply for convenience.
Changes should be merged back into lib/swiotlb.c once Xen support
merges into Linux.
Signed-off-by: Alex Williamson <alex.williamson@hp.com>
With this patch we can remove linux-2.6-xen-sparse/arch/ia64/dig/setup.c,
linux-2.6-xen-sparse/include/asm-ia64/machvec.h.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
with a multi-page head buffer. The new skbuff will not have a
multi-page head buffer, which is a necessary restriction until this is
supported by the internals of the netback driver.
Signed-off-by: Steven Smith <ssmith@xensource.com>
Signed-off-by: Keir Fraser <keir@xensource.com>
This reverts the preparation for removing the sparse tree, since these
modified scripts are not yet ready:
1. XENGUEST suffix was lost yet depended on still by sparse tree
Makefiles (hacked around by 14883; also reverted).
2. XEN_TARGET_X86_PAE default value seems to be ignored
(out-of-the-box 'make dist' will build non-PAE kernels).
Signed-off-by: Keir Fraser <keir@xensource.com>
Netfront's use of nh.raw and h.raw for storing page+offset is a bit
hinky, and it breaks with upcoming network stack updates which reduce
these fields to sub-pointer sizes. Fortunately, skb offers the "cb"
field specifically for stashing this kind of info, so use it.
Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Chris Wright <chrisw@sous-sol.org>
Cc: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>
1. rx_lock is a normal spinlock, and tx_lock is an irq spinlock. This
means that in normal use, tx_lock may be taken by an interrupt
routine while rx_lock is held. However, netif_disconnect_backend
takes them in the order tx_lock->rx_lock, which could lead to a
deadlock. Reverse them.
2. rx_lock can also be used in softirq context, so it should be
taken/released with spin_(un)lock_bh.
Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
drivers are not present. The feature-foo mechanism does not actually
work after save/restore since the fields do not get rewritten. And it
doesn't work when we actually need the guest to be shutdown through
Xen (e.g., on suspend). Since we can quite reasonably assume that the
only entity to screw with control/shutdown is xend, and since the one
place that does that now explicitly handles unenlightened HVM guests,
we can simply strip all this stuff out.
This has the nice benefit of making HVM save/restore with PV drivers
much more reliable.
Signed-off-by: Keir Fraser <keir@xensource.com>
xen-platform-pci fails to load w/ undefined symbols for some of the
sched_op hypercalls in machine_reboot.c. This adds them to xencomm
mini to allow them to be called from modules.
Signed-off-by: Alex Williamson <alex.williamson@hp.com>
Time interpolator remembers last status. When domain is restored, it
should be forgotten. Otherwise the interpolator causes bad timer value.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
This effectively automates passing the nomca flag to domUs,
preventing them from setting up CMC/CPE interrupts. This saves
3 dynamic IRQs per processor and allows us to get domUs up to 64
vCPUs without increasing the number of dynamic IRQs available.
Signed-off-by: Alex Williamson <alex.williamson@hp.com>
kfraser@localhost.localdomain
Ian Campbell
Jake Wires
Simon Horman
Alex Williamson
Keir Fraser
Steven Hand
Christian Limpach