x86/mm: Provide support for multiple frame buffers in HVM guests.

Support is provided for both shadow and hardware assisted paging (HAP)
modes. This code bookkeeps the set of video frame buffers (vram),
detects when the guest has modified any of those buffers and, upon request,
returns a bitmap of the modified pages.
This lets other software components re-paint the portions of the monitor
(or monitors) that have changed.
Each monitor has a frame buffer of some size at some position
in guest physical memory.
The set of frame buffers being tracked can change over time as monitors
are plugged and unplugged.

Signed-off-by: Robert Phillips <robert.phillips@citrix.com>
Acked-by: Tim Deegan <tim@xen.org>

Removed a stray #include and a few hard tabs.

Signed-off-by: Tim Deegan <tim@xen.org>

Committed-by: Tim Deegan <tim@xen.org>

1 files changed, 0 insertions, 6 deletions

diff --git a/xen/include/asm-x86/shadow.h b/xen/include/asm-x86/shadow.h
index 2eb6efc18e..940d7fde18 100644
--- a/xen/include/asm-x86/shadow.h
+++ b/xen/include/asm-x86/shadow.h
@@ -62,12 +62,6 @@ void shadow_vcpu_init(struct vcpu *v);
 /* Enable an arbitrary shadow mode.  Call once at domain creation. */
 int shadow_enable(struct domain *d, u32 mode);
 
-/* Enable VRAM dirty bit tracking. */
-int shadow_track_dirty_vram(struct domain *d,
-                            unsigned long first_pfn,
-                            unsigned long nr,
-                            XEN_GUEST_HANDLE_64(uint8) dirty_bitmap);
-
 /* Handler for shadow control ops: operations from user-space to enable
  * and disable ephemeral shadow modes (test mode and log-dirty mode) and
  * manipulate the log-dirty bitmap. */