Commit Graph

768 Commits

Author SHA1 Message Date
Edwin Zhai 4b4e1e1c59 DM: Add option of no check against ptdev reset
With '--ptdev_no_reset', DM doen not abort but warn when assign PCIe
dev without reset capability.

Signed-off-by: Edwin Zhai <edwin.zhai@intel.com>
Acked-by: Kevin Tian <kevin.tian@intel.com>
2018-05-29 13:44:13 +08:00
Edwin Zhai b19d936356 DM: refuse passthrough PCIe without reset support
Check reset method for PCIe dev according to 'reset' in sysfs, which
indicates reset capability, like FLR and secondary bus reset. PCIe dev
without reset capability is refused for passthrough to avoid failure
after UOS reboot.

Signed-off-by: Edwin Zhai <edwin.zhai@intel.com>
Acked-by: Kevin Tian <kevin.tian@intel.com>
2018-05-29 13:44:13 +08:00
Huang, Yang c3793e19ed DM sample: update uos launch script for virtio rpmb
Added virtio-rpmb for launch android

Signed-off-by: weideng <wei.a.deng@intel.com>
Signed-off-by: yingbinx <yingbinx.zeng@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-05-29 10:35:50 +08:00
Wu, Xiaoguang 9f56364cad DM USB: xHCI: add log level switch
Support log level options, which could change the related log level
without code change.

The new usage:
  -s <n>,xhci,[bus1-port1,bus2-port2]:[tablet]:[log=x]
  eg: -s 8,xhci,1-2,2-2:log=D
  eg: -s 7,xhci,tablet
  eg: -s 7,xhci,1-2,2-2:tablet

Note: please follow the board hardware design, assign the ports
according to the receptacle connection

Change-Id: I44639c7b076d21a40eb8f7b99cea8decc5c13c0c
Signed-off-by: Wu, Xiaoguang <xiaoguang.wu@intel.com>
Reviewed-by: Shuo Liu <shuo.a.liu@intel.com>
Reviewed-by: Yu Wang <yu1.wang@intel.com>
Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-05-29 10:35:05 +08:00
Wu, Xiaoguang be4406c8d9 DM USB: xHCI: modify option parsing function to enable USB virtualiztion
Re-write the xHCI option parse function to support port mapper.

The new usage:
  -s <n>,xhci,[bus1-port1,bus2-port2]:[tablet]
  eg: -s 8,xhci,1-2,2-2
  eg: -s 7,xhci,tablet
  eg: -s 7,xhci,1-2,2-2:tablet

Note: please follow the board hardware design, assign the ports
according to the receptacle connection

Change-Id: I3c8392f7e15580cf768c8c4a619d705411da699d
Signed-off-by: Wu, Xiaoguang <xiaoguang.wu@intel.com>
Reviewed-by: Shuo Liu <shuo.a.liu@intel.com>
Reviewed-by: Yu Wang <yu1.wang@intel.com>
Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-05-29 10:35:05 +08:00
Wu, Xiaoguang 6449950ccc DM USB: xHCI: add xHCI de-initialization support
add support for xHCI de-initialization when the guest
dose shutdown or reboot.

Change-Id: I3dfc1ed1a905b455ef455dff2065e872aa5c1ef8
Signed-off-by: Wu, Xiaoguang <xiaoguang.wu@intel.com>
Reviewed-by: Shuo Liu <shuo.a.liu@intel.com>
Reviewed-by: Yu Wang <yu1.wang@intel.com>
Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-05-29 10:35:05 +08:00
Wu, Xiaoguang 048b2c76a3 DM USB: xHCI: add port sharing feature
add support for xHCI port sharing feature, which enable the ability
to assign different native ports to different multi-UOSes. For
example:
1-2,1-2 assigned to UOS-1.
1-1,2-1 assigned to UOS-2.

Change-Id: I899070f7a8a6eb23179e41e7b1f1da24c52482b2
Signed-off-by: Wu, Xiaoguang <xiaoguang.wu@intel.com>
Reviewed-by: Shuo Liu <shuo.a.liu@intel.com>
Reviewed-by: Yu Wang <yu1.wang@intel.com>
Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-05-29 10:35:05 +08:00
Wu, Xiaoguang 8aef2cb34b DM USB: Add some APIs for check native related configurations.
New USB APIs:
usb_native_is_bus_existed/usb_native_is_port_existed: Check if specific
usb bus or port are valid or not.
usb_native_is_ss_port: Check if the specific port is supper speed usb port.

Change-Id: I9ab54f6e81742321128d6abd5845ef966f0e9f37
Signed-off-by: Wu, Xiaoguang <xiaoguang.wu@intel.com>
Reviewed-by: Shuo Liu <shuo.a.liu@intel.com>
Reviewed-by: Yu Wang <yu1.wang@intel.com>
Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-05-29 10:35:05 +08:00
Wu, Xiaoguang 0181d19a61 DM USB: xHCI: support USB hot plug out.
Implements the disconnect callback of libusb which will be called once
USB device plug out.

Change-Id: Ic5f072f08a92270e6e5836b49e5066da783af243
Signed-off-by: Wu, Xiaoguang <xiaoguang.wu@intel.com>
Reviewed-by: Shuo Liu <shuo.a.liu@intel.com>
Reviewed-by: Yu Wang <yu1.wang@intel.com>
Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-05-29 10:35:05 +08:00
Wu, Xiaoguang 7687a3d0d7 DM USB: xHCI: support bulk and interrupt transfer for port mapper
Support USB mouse, USB keyboard and USB flash drive by enabling the
USB bulk and interrupt transfer for port mapper.

Change-Id: Ia202729e0cfb26fb44a6b278cf4306f2b0b6fa36
Signed-off-by: Wu, Xiaoguang <xiaoguang.wu@intel.com>
Reviewed-by: Shuo Liu <shuo.a.liu@intel.com>
Reviewed-by: Yu Wang <yu1.wang@intel.com>
Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-05-29 10:35:05 +08:00
Wu, Xiaoguang 3b6392740e DM USB: xHCI: DM USB: xHCI: Support port change event for hot connection
This patch implements the port change event related function, it
triggered when USB device be hot plugged in.

Change-Id: I065c1e93779f85f8ee6031960e129b59146e1bb7
Signed-off-by: Wu, Xiaoguang <xiaoguang.wu@intel.com>
Reviewed-by: Shuo Liu <shuo.a.liu@intel.com>
Reviewed-by: Yu Wang <yu1.wang@intel.com>
Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-05-29 10:35:05 +08:00
Wu, Xiaoguang caf4916e99 DM USB: xHCI: Support control transfer for USB port mapper.
This patch implements the control transfer for port mapper. With this
patch, USB2.0 device can be enumerated successfully in user OS.

Change-Id: I567bd00ca310d68375acd94a5cc5bcd287665df1
Signed-off-by: Wu, Xiaoguang <xiaoguang.wu@intel.com>
Reviewed-by: Shuo Liu <shuo.a.liu@intel.com>
Reviewed-by: Yu Wang <yu1.wang@intel.com>
Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-05-29 10:35:05 +08:00
Wu, Xiaoguang b12527f35d DM USB: add libusb error conversion function
Add a function to covert libusb error to the common USB core
error type.

Change-Id: Icb03fae2acdc914b3d32a5942faf7d79793a4bee
Signed-off-by: Wu, Xiaoguang <xiaoguang.wu@intel.com>
Reviewed-by: Shuo Liu <shuo.a.liu@intel.com>
Reviewed-by: Yu Wang <yu1.wang@intel.com>
Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-05-29 10:35:05 +08:00
Wu, Xiaoguang 2d1fb7e480 DM USB: move the UREQ macro into common header
move the UREQ macro from usb_mouse.c to usb.h

Change-Id: I977cf73291610b0448eb031a500788a397b55f88
Signed-off-by: Wu, Xiaoguang <xiaoguang.wu@intel.com>
Reviewed-by: Shuo Liu <shuo.a.liu@intel.com>
Reviewed-by: Yu Wang <yu1.wang@intel.com>
Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-05-29 10:35:05 +08:00
Wu, Xiaoguang 17d4e9a995 DM USB: xHCI: implement connect callbacks for USB port mapper
Allocate an emulated USB instance in connect callback function. This
instance is the entity of virtual USB device which will be enumerated
by the UOS.

Change-Id: I948d2ce9eca7e9d5bbab673f2505efc0a03c03b4
Signed-off-by: Wu, Xiaoguang <xiaoguang.wu@intel.com>
Reviewed-by: Shuo Liu <shuo.a.liu@intel.com>
Reviewed-by: Yu Wang <yu1.wang@intel.com>
Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-05-29 10:35:05 +08:00
Wu, Xiaoguang aa0480f44e DM USB: extend the API for struct usb_devemu
For the purpose of USB port mapper, change struct usb_devemu to
common interface between HCD layer and USB device layer.

Besides, implements ue_init/ue_deinit/ue_info for port mapper.

Change-Id: Id4b7345c7b321b9bdab58139c61169d9229cb6f8
Signed-off-by: Wu, Xiaoguang <xiaoguang.wu@intel.com>
Reviewed-by: Shuo Liu <shuo.a.liu@intel.com>
Reviewed-by: Yu Wang <yu1.wang@intel.com>
Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-05-29 10:35:05 +08:00
Wu, Xiaoguang 1816d3e608 DM USB: introduce data structure and APIs for USB port mapper
Introduce the struct usb_dev which is used to abstract the physical USB
devices. And APIs for external call are also provided.

Change-Id: Ia25d52a6c670040da787f82b3bea34eee9f3d04d
Signed-off-by: Wu, Xiaoguang <xiaoguang.wu@intel.com>
Reviewed-by: Shuo Liu <shuo.a.liu@intel.com>
Reviewed-by: Yu Wang <yu1.wang@intel.com>
Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-05-29 10:35:05 +08:00
Wu, Xiaoguang 51f7633f82 DM USB: involve the libusb
This patch involves the libusb to communicate with the SOS USB kernel
stack, and the README.rst is also updated for this purpose.

The libusb is under GNU Lesser General Public License version 2.1.

Change-Id: Ieecd08f41993162115e8e588980b81b769c89a37
Signed-off-by: Wu, Xiaoguang <xiaoguang.wu@intel.com>
Reviewed-by: Shuo Liu <shuo.a.liu@intel.com>
Reviewed-by: Yu Wang <yu1.wang@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-05-29 10:35:05 +08:00
Wu, Xiaoguang 8f3f66bae5 DM USB: enable log level feature for USB subsystem
Change the DPRINTF macro to UPRINTF for USB subsystem. The
UPRINTF will print log according to certain log level.

Change-Id: I5db8813357c9f684c25f23650e7c914f9063f842
Signed-off-by: Wu, Xiaoguang <xiaoguang.wu@intel.com>
Reviewed-by: Shuo Liu <shuo.a.liu@intel.com>
Reviewed-by: Yu Wang <yu1.wang@intel.com>
Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-05-29 10:35:05 +08:00
Jack Ren 3b616010e0 hv: handle the case of empty hypervisor cmdline
Fix a bug:
When the hypervisor cmdline is empty, the hypervisor will be
unable to boot up.

Signed-off-by: Jack Ren <jack.ren@intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
2018-05-28 17:36:54 +08:00
Miguel Bernal Marin a28c75f5ed doc: fix references from scripts
The sambles scripts where moved to another directory but did not update
all the references in the documentation.

Fixes: 977d48d550 ("hypervisor: install acrn.efi to /usr/lib")
Fixes: 9563e248b7 ("samples: move samples to specifi platform diretory")

Signed-off-by: Miguel Bernal Marin <miguel.bernal.marin@linux.intel.com>
2018-05-25 13:46:11 -07:00
huihuang.shi 784eb6f189 fix "warning:range expression in switch statements are not standard"
Range expression in switch statement is in gcc extension standard(gcc
manual 6.28),not in c99 standard.
GCC manual 6.28 reference link below:
(https://gcc.gnu.org/onlinedocs/gcc-8.1.0/gcc/Case-Ranges.html#Case-Ranges)

Signed-off-by: huihuang.shi <huihuang.shi@intel.com>
2018-05-25 17:18:34 +08:00
Yonghua Huang 71975d63fd DM: using 'strncpy' coding style cleanup
- check buffer boundaries to avoid buffer overflow

Signed-off-by: Yonghua Huang <yonghua.huang@intel.com>
2018-05-25 15:36:25 +08:00
huihuang.shi 2f3953a99a fix "warning:ISO C forbids 'return' with expression,in function returning void"
returning void function must return void.

Signed-off-by: huihuang.shi <huihuang.shi@intel.com>
2018-05-25 15:35:50 +08:00
Liu Yuan 0b7af5b6e1 IOC mediator: Implement state transfer operations
This patch implements INIT, ACTIVE, SUSPENDING and SUSPENDED operations of
IOC mediator lifecycle virtualization.

Signed-off-by: Liu Yuan <yuan1.liu@intel.com>
Reviewed-by: Wang Yu <yu1.wang@intel.com>
Reviewed-by: Liu Shuo <shuo.a.liu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-05-25 15:34:44 +08:00
Liu Yuan 11208dd6d5 IOC mediator: Implement state transfer framework
Implements state transfer framework to support IOC lifecycle virtualization.
Four states will be involved in this framework includes INIT, ACTIVE,SUSPENDING and
SUSPENDED.

Signed-off-by: Liu Yuan <yuan1.liu@intel.com>
Reviewed-by: Wang Yu <yu1.wang@intel.com>
Reviewed-by: Liu Shuo <shuo.a.liu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-05-25 15:34:44 +08:00
Liu Yuan 92da8f4954 IOC mediator: Separate wakeup reason and heartbeat
Separate wakeup reason and hearbeat functions from lifecycle processing since
lifecycle virtualization only contains wakeup reason and heartbeat, the other
functions of lifecycle like boot selector, are not handled by IOC mediator.

Signed-off-by: Liu Yuan <yuan1.liu@intel.com>
Reviewed-by: Wang Yu <yu1.wang@intel.com>
Reviewed-by: Liu Shuo <shuo.a.liu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-05-25 15:34:44 +08:00
Zide Chen 8f16faab04 HV: further cleanup of header inclusions
According to the comments in hypervisor:
 " This file includes config header file "bsp_cfg.h" and other
	hypervisor used header files.
	It should be included in all the source files."

this patch includes all common header files in hypervisor.h
then removes other redundant inclusions

Signed-off-by: Zide Chen <zide.chen@intel.com>
2018-05-25 10:45:56 +08:00
Zide Chen d594878e31 HV: cleanup for header inclusions.
used https://gitlab.com/esr/deheader to detect and remove unnecessary
header file inclusions

Signed-off-by: Zide Chen <zide.chen@intel.com>
2018-05-25 10:45:56 +08:00
Huang, Yang 8db85ecb25 DM: RPMB virtualization
Full logic to supprot vRPMB:
1. Automatic switch between physical or simulated RPMB.
   But hardcode to use simulated one.
2. Parse RPMB cmd to basic APIs to:
   2.1 check request frame HMAC with uos vkey
   2.2 replace RPMB frame with real values.
3. RPMB partitioning for multiple UOS.
   It's hardcoded for coming config file support.

Signed-off-by: Huang Yang <yang.huang@intel.com>
Signed-off-by: Du Min <minx.du@intel.com>
Acked-by: Zhu Bing <bing.zhu@intel.com>
2018-05-25 10:45:24 +08:00
Huang, Yang e6d57f439f DM: Add simulated RPMB support
Create file as simulated RPMB storage for pre-production usage.
Add RPMB APIs to emulate behavior of physical RPMB controllor.

Signed-off-by: Huang Yang <yang.huang@intel.com>
Signed-off-by: Du Min <minx.du@intel.com>
Acked-by: Zhu Bing <bing.zhu@intel.com>
2018-05-25 10:45:24 +08:00
Qi Yadong 76d2441378 DM: Generate vRPMB key when creating UOS
Generate virtual RPMB key and pass it to HV when
creating UOS.

Signed-off-by: Qi Yadong <yadong.qi@intel.com>
Acked-by: Zhu Bing <bing.zhu@intel.com>
2018-05-25 10:45:24 +08:00
yingbinx b6bec540f7 VRPMB-BE: add RPMB protocol
This patch implements RPMB protocol into vRPMB backend
VBS-U. It will handle RPMB request from VRPMB FE.

Signed-off-by: weideng <wei.a.deng@intel.com>
Signed-off-by: yingbinx <yingbinx.zeng@intel.com>
Acked-by: Zhu Bing <bing.zhu@intel.com>
2018-05-25 10:45:24 +08:00
yingbinx 6c4ebe3f26 VRPMB-BE: create virtio rpmb backend VBS-U
This patch implements virtio rpmb backend VBS-U component,
it includes the basic module interface with DM. This
component will work with vRPMB FE driver together to
provide one communication channel between UOS and SOS.

Signed-off-by: weideng <wei.a.deng@intel.com>
Signed-off-by: yingbinx <yingbinx.zeng@intel.com>
Acked-by: Zhu Bing <bing.zhu@intel.com>
2018-05-25 10:45:24 +08:00
David B. Kinder 91f7391ad8 doc: move DM memory setup to GSG
DM memory allocation mechanism is better placed in the Getting Started
material, so move it there from the primer.

Signed-off-by: David B. Kinder <david.b.kinder@intel.com>
2018-05-25 10:04:32 +08:00
Kien Dinh 6e1582452d doc: Getting Started Guide for UP2 board
Signed-off-by: Kien Dinh <kien.t.dinh@intel.com>
2018-05-25 10:04:01 +08:00
Yonghua Huang fc93c649d5 DM: validate port range explicitly in inout.c
- check the port address range explicitly
  to avoid buffer overflow.

Signed-off-by: Yonghua Huang <yonghua.huang@intel.com>
2018-05-25 09:46:15 +08:00
Jason Chen CJ 1b34870824 guest: quick fix for copy_from/to_vm
h_ptr need update from second page walk

Signed-off-by: Jason Chen CJ <jason.cj.chen@intel.com>
2018-05-25 09:43:08 +08:00
Li, Fei1 34445008c2 hv: add non-lock bitmap operation
Add __bitmap_set/clear,
__bitmap_test_and_set/clear.

Signed-off-by: Li, Fei1 <fei1.li@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-05-25 09:42:03 +08:00
Li, Fei1 efb60e2726 hv: refine bit scan API
Rename
bsrl to bsr
bsrq to bsr64
bitmap_ffs to fls64
get_first_zero_bit to ffz64

Remove
ffsl

Signed-off-by: Li, Fei1 <fei1.li@intel.com>
2018-05-25 09:42:03 +08:00
Li, Fei1 57d0bf3b7c hv: refine bitops
Rename bitmap_clr to bitmap_clear
Rename bitmap_isset to bitmap_test
Remove bitmap_setof

Signed-off-by: Li, Fei1 <fei1.li@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-05-25 09:42:03 +08:00
Jiang, Fei 95c289b15f DM: Change boot_args to assign one plane of pipe B and pipe C to SOS
After i915.avail_planes_per_pipe(0x0000F) is added to SOS, it will cause
that the pipe B/C is initialized without plane. In such case this pipe
can't be used by UOS, with error: primary plane disabled.
The bootarg is changed so that the pipe B/C on SOS can be initialized with
at least one plane.

Signed-off-by: Jiang Fei <fei.jiang@intel.com>
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
2018-05-24 21:48:47 +08:00
Miguel Bernal Marin 7811bdd51e Makefile: add a target to build sbl hypervisor
To build with only one command the sbl and efi hypervisor a target was
added which build the SBL hypervisor version.

Now you can call "make all sbl-hypervisor" and
"make install sbl-hypervisor-install"

Signed-off-by: Miguel Bernal Marin <miguel.bernal.marin@linux.intel.com>
2018-05-24 19:35:03 +08:00
Miguel Bernal Marin 364b24224a hypervisor: install acrn.32.out to /usr/lib/acrn/acrn.sbl
Add a target in the make file to install the 32bit ELF acrn binary
and rename to acrn.sbl

Suggested-by: Arzhan Kinzhalin <arzhan.i.kinzhalin@intel.com>
Signed-off-by: Miguel Bernal Marin <miguel.bernal.marin@linux.intel.com>
2018-05-24 19:34:49 +08:00
Miguel Bernal Marin 977d48d550 hypervisor: install acrn.efi to /usr/lib
acrn.efi is a binary and need to be installed to /usr/lib instead of
/usr/share.

Suggested-by: Arzhan Kinzhalin <arzhan.i.kinzhalin@intel.com>
Signed-off-by: Miguel Bernal Marin <miguel.bernal.marin@linux.intel.com>
2018-05-24 19:34:49 +08:00
Miguel Bernal Marin 9563e248b7 samples: move samples to specifi platform diretory
Move the platform apl-mrb samples to devicemodel samples directory.
Add the install target to the missing samples files and re-organize the
samples directory structure to have nuc and apl-mrb samples.

Suggested-by: Arzhan Kinzhalin <arzhan.i.kinzhalin@intel.com>
Signed-off-by: Miguel Bernal Marin <miguel.bernal.marin@linux.intel.com>
2018-05-24 19:34:49 +08:00
huihuang.shi d3ef8ae5cb fix "warning ISO C forbids omitting the middle term of a?:expression"
According to the C99 manual 6.5.15
syntax conditional-expression
  logical-OR-expression
  logical-OR-expression ? expression :conditional-expression

above bnf rules requires expression not be none

Signed-off-by: huihuang.shi <huihuang.shi@intel.com>
2018-05-24 13:43:53 +08:00
huihuang.shi 64d2efcfaf fix "obsolete use of designated initializer without '='"
According in C99 manual 6.7.8,'=' is required.

Signed-off-by: huihuang.shi <huihuang.shi@intel.com>
2018-05-24 13:43:53 +08:00
Jason Chen CJ 67dfec8799 vmexit: refine vmexit loop
- move vmexit handling into vmexit_handler
- add error handling, failure will inject #GP

Signed-off-by: Jason Chen CJ <jason.cj.chen@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-05-24 13:42:19 +08:00
Jason Chen CJ 2ff7bf826e page walk during copy_from_vm/copy_to_vm
there are data transfer between guest(GPA) & hv(HPA), especially for
hypercall from guest.

guest should make sure these GPAs are address continous, but hv cannot
assure HPAs which mapped to these GPAs are address continous, for example,
after enable hugetlb, a contious GPA range could come from two different
2M pages.

this patch is handling such case by doing gpa page walking during
copy_from_vm & copy_to_vm.

Signed-off-by: Jason Chen CJ <jason.cj.chen@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-05-24 13:42:19 +08:00