On 8/10/2015 4:26 PM, Wei Liu wrote:
On Mon, Aug 10, 2015 at 11:33:40AM +0800, Yu Zhang wrote:
Currently in ioreq server, guest write-protected ram pages are
tracked in the same rangeset with device mmio resources. Yet
unlike device mmio, which can be in big chunks, the guest write-
protected pages may be discrete ranges with 4K bytes each.
This patch uses a seperate rangeset for the guest ram pages.
And a new ioreq type, IOREQ_TYPE_MEM, is defined.
Note: Previously, a new hypercall or subop was suggested to map
write-protected pages into ioreq server. However, it turned out
handler of this new hypercall would be almost the same with the
existing pair - HVMOP_[un]map_io_range_to_ioreq_server, and there's
already a type parameter in this hypercall. So no new hypercall
defined, only a new type is introduced.
Signed-off-by: Yu Zhang <yu.c.zh...@linux.intel.com>
---
tools/libxc/include/xenctrl.h | 39 +++++++++++++++++++++++---
tools/libxc/xc_domain.c | 59 ++++++++++++++++++++++++++++++++++++++--
FWIW the hypercall wrappers look correct to me.
diff --git a/xen/include/public/hvm/hvm_op.h b/xen/include/public/hvm/hvm_op.h
index 014546a..9106cb9 100644
--- a/xen/include/public/hvm/hvm_op.h
+++ b/xen/include/public/hvm/hvm_op.h
@@ -329,8 +329,9 @@ struct xen_hvm_io_range {
ioservid_t id; /* IN - server id */
uint32_t type; /* IN - type of range */
# define HVMOP_IO_RANGE_PORT 0 /* I/O port range */
-# define HVMOP_IO_RANGE_MEMORY 1 /* MMIO range */
+# define HVMOP_IO_RANGE_MMIO 1 /* MMIO range */
# define HVMOP_IO_RANGE_PCI 2 /* PCI segment/bus/dev/func range */
+# define HVMOP_IO_RANGE_MEMORY 3 /* MEMORY range */
This looks problematic. Maybe you can get away with this because this is
a toolstack-only interface?
Thanks Wei.
Well, I believe this interface could be used both by the backend device
driver and qemu as well(which I neglected). :-)
Yu
Wei.
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel
