We have to use __vmalloc() and __PAGE_KERNEL because vmalloc_exec()
and PAGE_KERNEL_EXEC are not exported to modules.
Signed-off-by: Keir Fraser <keir@xensource.com>
__gnttab_unmap_grant_ref verifies the validity of the handle by
checking it against maptrack_limit and making sure that the flags
field at the given handle is non-zero.
This means that the flags of an unused handle should be zero in
order to prevent unused handles from getting past this check.
However, we don't seem to set it to zero to begin with when we
allocate the maptrack table. This could potentially lead to the
corruption of the other domain's internal state, and/or the hypervisor's
internal state.
This patch makes sure that it is zeroed.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This more neatly matches how the two adjacent fields in
the grant-table entry are accessed by the cmpxchg()
function.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Necessary because the modified word may not be the one directly
addressed by the memory parameter (since the parameter actually
points at an array, not a scalar value).
The change to set_bit/__set_bit is reported to fix an issue
on x460 hardware, as reported (and this fix suggested) by
Ryan Harper <ryanh@us.ibm.com>
Signed-off-by: Keir Fraser <keir@xensource.com>
call to determine the initial reservation separately from the amount of
memory to be freed up by ballooning -- when using QEMU, we lose 8 MiB to video
RAM, which must be accounted for when ballooning, but _not_ accounted for
within the domain's memory allocation.
Tidy this code up using the new architecture-specific interface arrangement.
Signed-off-by: Ewan Mellor <ewan@xensource.com>
local migration since this does not seem to work correctly (see tests in
xm test suite). If no vTPM has been attached, the local migration
proceeds as usual.
Signed-off-by: Stefan Berger <stefanb@us.ibm.com>
This patch supports the hwclock on Domain-0.
It adds the following EFI runtime service emulations for the
hwclock support.
1. SetTime
2. Get/SetWakeupTime
Signed-off-by: Masaki Kanno <kanno.masaki@jp.fujitsu.com>
This fixes the sparse tree buildconfigs to allow xenU to build
automatically. There's no need to force netdev front/back on from
the arch Kconfig file anymore. Based on patch from Akio Takebe &
Yoshiro Fujita.
Signed-off-by: Alex Williamson <alex.williamson@hp.com>
With this patch, a checked build of Windows Server 2003 can be installed
and run on top of a VMX domain.
Signed-off-by: Eddie Dong <eddie.dong@intel.com>
Signed-off-by: Qing He <qing.he@intel.com>
This patch makes frontend drivers being shutdown when devices_shutdown()
is called and walks down the device tree. Most of it is handled by the
xenbus core, which got a new function for the bus->shutdown callback.
Signed-off-by: Gerd Hoffmann <kraxel@suse.de>
Driver changes: Make backend drivers check it when entering Closed
state, only unregister devices when the "online" node is either "0" or
not present. The later maintains backward compatibility.
Tools changes: Update "online" node when creating and hot-unplugging
devices.
Background: When kexec'ing a new kernel, the old kernel's frontend
driver will shutdown, but the backend device should *NOT* disappear
due to that, so the new kernel instance can reconnect.
Signed-off-by: Gerd Hoffmann <kraxel@suse.de>
