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linux/drivers/xen
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David Vrabel a4cdb556ca xen/gntdev: add ioctl for grant copy 
Add IOCTL_GNTDEV_GRANT_COPY to allow applications to copy between user
space buffers and grant references.

This interface is similar to the GNTTABOP_copy hypercall ABI except
the local buffers are provided using a virtual address (instead of a
GFN and offset).  To avoid userspace from having to page align its
buffers the driver will use two or more ops if required.

If the ioctl returns 0, the application must check the status of each
segment with the segments status field.  If the ioctl returns a -ve
error code (EINVAL or EFAULT), the status of individual ops is
undefined.

Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
2016-01-07 13:21:53 +00:00
..
events xen/events/fifo: Consume unprocessed events when a CPU dies 2015-12-02 13:23:25 +00:00
xen-pciback xen-pciback: fix up cleanup path when alloc fails 2015-12-18 11:38:48 -05:00
xenbus xenbus: Support multiple grants ring with 64KB 2015-10-23 14:20:47 +01:00
xenfs xen: rename dom0_op to platform_op 2015-12-21 14:40:55 +00:00
acpi.c xen: rename dom0_op to platform_op 2015-12-21 14:40:55 +00:00
balloon.c xen/balloon: Use the correct sizeof when declaring frame_list 2015-10-23 14:20:44 +01:00
biomerge.c xen/biomerge: Don't allow biovec's to be merged when Linux is not using 4KB pages 2015-10-23 14:20:36 +01:00
cpu_hotplug.c xen, cpu_hotplug: call device_offline instead of cpu_down 2015-10-23 14:20:48 +01:00
dbgp.c xen: Use dev_is_pci() to check whether it is pci device 2014-01-07 09:53:33 -05:00
efi.c xen: rename dom0_op to platform_op 2015-12-21 14:40:55 +00:00
evtchn.c xen/evtchn: dynamically grow pending event channel ring 2015-11-26 18:49:54 +00:00
fallback.c xen-pciback: notify hypervisor about devices intended to be assigned to guests 2013-03-22 10:20:55 -04:00
features.c
gntalloc.c Merge branch 'akpm' (patches from Andrew) 2015-09-10 18:19:42 -07:00
gntdev.c xen/gntdev: add ioctl for grant copy 2016-01-07 13:21:53 +00:00
grant-table.c xen/grant-table: constify gnttab_ops structure 2015-12-21 14:41:01 +00:00
Kconfig xen/PMU: Sysfs interface for setting Xen PMU mode 2015-08-20 12:24:26 +01:00
Makefile xen: move xen_setup_runstate_info and get_runstate_snapshot to drivers/xen/time.c 2015-12-21 14:40:52 +00:00
manage.c xen: Use correctly the Xen memory terminologies 2015-09-08 18:03:49 +01:00
mcelog.c xen/mce: fix up xen_late_init_mcelog() error handling 2015-03-16 14:49:15 +00:00
pci.c xen/pci: Try harder to get PXM information for Xen 2015-04-15 10:57:28 +01:00
pcpu.c xen: rename dom0_op to platform_op 2015-12-21 14:40:55 +00:00
platform-pci.c drivers: xen: Mark function as static in platform-pci.c 2014-02-28 15:26:04 -05:00
preempt.c xen/preempt: use need_resched() instead of should_resched() 2015-08-20 12:24:14 +01:00
privcmd.c xen/privcmd: Add support for Linux 64KB page granularity 2015-10-23 14:20:42 +01:00
privcmd.h
swiotlb-xen.c xen/swiotlb: Add support for 64KB page granularity 2015-10-23 14:20:43 +01:00
sys-hypervisor.c xen/PMU: Sysfs interface for setting Xen PMU mode 2015-08-20 12:24:26 +01:00
time.c xen/time: use READ_ONCE 2015-12-21 14:41:00 +00:00
tmem.c xen/tmem: Use xen_page_to_gfn rather than pfn_to_gfn 2015-09-08 18:03:52 +01:00
xen-acpi-cpuhotplug.c xen: rename dom0_op to platform_op 2015-12-21 14:40:55 +00:00
xen-acpi-memhotplug.c ACPICA: Resources: Provide common part for struct acpi_resource_address structures. 2015-01-26 16:09:56 +01:00
xen-acpi-pad.c xen: rename dom0_op to platform_op 2015-12-21 14:40:55 +00:00
xen-acpi-processor.c xen: rename dom0_op to platform_op 2015-12-21 14:40:55 +00:00
xen-balloon.c xen: balloon: Use static attribute groups for sysfs entries 2015-03-16 14:49:13 +00:00
xen-scsiback.c xen: bug fixes for 4.4-rc5 2015-12-18 12:24:52 -08:00
xen-selfballoon.c drivers:xen-selfballoon:reset 'frontswap_inertia_counter' after frontswap_shrink 2014-02-28 15:26:12 -05:00
xen-stub.c xen/acpi: remove redundant acpi/acpi_drivers.h include 2013-03-11 13:53:02 -04:00
xlate_mmu.c xen/privcmd: Add support for Linux 64KB page granularity 2015-10-23 14:20:42 +01:00