Commit Graph

83 Commits

Author SHA1 Message Date
Victor Sun
78139b955c HV: kconfig: add range check for memory setting
When user use make menuconfig to configure memory related kconfig items,
we need add range check to avoid compile error or other potential issues:

CONFIG_LOW_RAM_SIZE:(0 ~ 0x10000)
		the value should be less than 64KB;

CONFIG_HV_RAM_SIZE: (0x1000000 ~ 0x10000000)
		the hypervisor RAM size should be supposed between
		16MB to 256MB;

CONFIG_PLATFORM_RAM_SIZE: (0x100000000 ~ 0x4000000000)
		the platform RAM size should be larger than 4GB
		and less than 256GB;

CONFIG_SOS_RAM_SIZE: (0x100000000 ~ 0x4000000000)
		the SOS RAM size should be larger than 4GB
		and less than 256GB;

CONFIG_UOS_RAM_SIZE: (0 ~ 0x2000000000)
		the UOS RAM size should be less than 128GB;

Tracked-On: #4229

Signed-off-by: Victor Sun <victor.sun@intel.com>
2019-12-16 15:14:55 +08:00
Victor Sun
249947030b HV: Kconfig: set default Kata num to 1 in SDC
Set default CONFIG_KATA_VM_NUM to 1 in SDC scenario so that user could
have a try on Kata container without rebuilding hypervisor.

Please be aware that vcpu affinity of VM1 in CPU partition mode
would be impacted by this patch.

Tracked-On: #4232

Signed-off-by: Victor Sun <victor.sun@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2019-12-16 15:14:42 +08:00
Victor Sun
a44c1c900c HV: Kconfig: remove MAX_VCPUS_PER_VM in Kconfig
In current architecutre, the maximum vCPUs number per VM could not
exceed the pCPUs number. Given the MAX_PCPU_NUM macro is provided
in board configurations, so remove the MAX_VCPUS_PER_VM from Kconfig
and add a macro of MAX_VCPUS_PER_VM to reference MAX_PCPU_NUM directly.

Tracked-On: #4230

Signed-off-by: Victor Sun <victor.sun@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2019-12-12 13:49:28 +08:00
Shuo A Liu
b32ae229fb hv: sched: use hypervisor configuration to choose scheduler
For now, we set NOOP scheduler as default. User can choose IORR scheduler as needed.

Tracked-On: #4178
Signed-off-by: Shuo A Liu <shuo.a.liu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2019-12-11 09:31:39 +08:00
Vijay Dhanraj
ed65ae61c6 HV: Kconfig changes to support server platform.
This patch updates kconfig to support server platforms
for increased number of VCPUs per VM and PT IRQ number.

Signed-off-by: Vijay Dhanraj <vijay.dhanraj@intel.com>
Tracked-On: #4196
2019-12-09 11:29:34 +08:00
Binbin Wu
0570993b40 hv: config: add an option to disable mce on psc workaround
Add a option MCE_ON_PSC_WORKAROUND_DISABLED to disable the software
workaround for the issue Machine Check Error on Page Size Change.

Tracked-On: #4101
Signed-off-by: Binbin Wu <binbin.wu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2019-12-03 09:17:04 +08:00
Geoffroy Van Cutsem
51a43dab79 hv: add Kconfig parameter to define the Service VM EFI bootloader
Add a Kconfig parameter called UEFI_OS_LOADER_NAME to hold the Service VM EFI
bootloader to be run by the ACRN hypervisor. A new string manipulation function
to convert from (char *) to (CHAR16 *) has been added to facilitate the
implementation.

The default value is set to systemd-boot (bootloaderx64.efi)

Tracked-On: #2793
Signed-off-by: Geoffroy Van Cutsem <geoffroy.vancutsem@intel.com>
2019-11-27 10:38:49 +08:00
Victor Sun
589be88cf6 HV: link CONFIG_MAX_IOMMU_NUM and MAX_DRHDS to DRHD_COUNT
The value of CONFIG_MAX_IOMMU and MAX_DRHDS are identical to DRHD_COUNT
which defined in platform ACPI table, so remove CONFIG_MAX_IOMMU_NUM
from Kconfig and link these three MACROs together.

Tracked-On: #3977

Signed-off-by: Victor Sun <victor.sun@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2019-11-08 16:40:14 +08:00
wenwumax
048155d3d6 hv: support minimum set of TLFS
This patch implements the minimum set of TLFS functionality. It
includes 6 vCPUID leaves and 3 vMSRs.

- 0x40000001 Hypervisor Vendor-Neutral Interface Identification
- 0x40000002 Hypervisor System Identity
- 0x40000003 Hypervisor Feature Identification
- 0x40000004 Implementation Recommendations
- 0x40000005 Hypervisor Implementation Limits
- 0x40000006 Implementation Hardware Features

- HV_X64_MSR_GUEST_OS_ID Reporting the guest OS identity
- HV_X64_MSR_HYPERCALL Establishing the hypercall interface
- HV_X64_MSR_VP_INDEX Retrieve the vCPU ID from hypervisor

Tracked-On: #3832
Signed-off-by: wenwumax <wenwux.ma@intel.com>
Signed-off-by: Jian Jun Chen <jian.jun.chen@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2019-10-22 10:09:16 +08:00
Shuo A Liu
59e39c5fbb hv: move MAX_PCPU_NUM from Kconfig to header file
MAX_PCPU_NUM is different on various BOARDs. So we move the generic
definition from Kconfig to each board's config header file.

Tracked-On: #3663
Signed-off-by: Shuo A Liu <shuo.a.liu@intel.com>
2019-09-24 11:58:45 +08:00
Victor Sun
c8cdc7e807 HV: move vCOM setting from Kconfig to board configs
The settings of SOS VM COM1 which is used for console is board specific,
and this result in SOS VM COM2 which used for VM communication is also
board specific, so move the configure method from Kconfig to board configs
folder. The MACRO definition will be handled by acrn-config tool in future.

Tracked-On: #3602

Signed-off-by: Victor Sun <victor.sun@intel.com>
Reviewed-by: Eddie Dong <eddie.dong@intel.com>
2019-08-22 13:12:54 +08:00
fuzhongl
a90a6a1059 HV: add SDC2 config in hypervisor/arch/x86/Kconfig
Per community requirement;up to three post-launched VM might be
needed for some automotive SDC system, so add SDC2 scenario to
satisfy this requirement.

Tracked-On: #3429
Signed-off-by: fuzhongl <fuzhong.liu@intel.com>
Reviewed-by: Victor Sun <victor.sun@intel.com>
2019-07-18 15:03:14 +08:00
Victor Sun
5b1852e482 HV: add kata support on sdc scenario
In current design, devicemodel passes VM UUID to create VMs and hypervisor
would check the UUID whether it is matched with the one in VM configurations.

Kata container would maintain few UUIDs to let ACRN launch the VM, so
hypervisor need to add these UUIDs in VM configurations for Kata running.
In the hypercall of hcall_get_platform_info(), hypervisor will report the
maximum Kata container number it will support. The patch will add a Kconfig
to indicate the maximum Kata container number that SOS could support.

In current stage, only one Kata container is supported by SOS on SDC scenario
so add one UUID for Kata container in SDC VM configuration. If we want to
support Kata on other scenarios in the future, we could follow the example
of this patch;

Tracked-On: #3402

Signed-off-by: Victor Sun <victor.sun@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2019-07-12 16:34:31 +08:00
Sainath Grandhi
0a8bf6cee4 hv: Avoid run-time buffer overflows with IOAPIC data structures
Remove couple of run-time ASSERTs in ioapic module by checking for the
number of interrupt pins per IO-APICs against the configured MAX_IOAPIC_LINES
in the initialization flow.
Also remove the need for two MACROs specifying the max. number of
interrupt lines per IO-APIC and add a config item MAX_IOAPIC_LINES for the
same.

Tracked-On: #3299
Signed-off-by: Sainath Grandhi <sainath.grandhi@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2019-06-24 11:41:10 +08:00
Victor Sun
0a748fedac HV: add hybrid scenario
Hybrid scenario will run 3 VMs: one pre-launched VM, one pre-launched SOS VM
and one post-launched Standard VM.

Tracked-On: #3214

Signed-off-by: Victor Sun <victor.sun@intel.com>
Reviewed-by: Jason Chen CJ <jason.cj.chen@intel.com>
2019-06-06 15:22:10 +08:00
Victor Sun
8afbdb7505 HV: enable Kconfig of ACPI_PARSE_ENABLED
Previously we use Kconfig of DMAR_PARSE_ENABLED to choose pre-defined DMAR info
or parse it at runtime, at the same time we use MACRO of CONFIG_CONSTANT_ACPI
to decide whether parse PM related ACPI info at runtime. This looks redundant
so use a unified ACPI_PARSE_ENABLED Kconfig to replace them.

Tracked-On: #3107

Signed-off-by: Victor Sun <victor.sun@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2019-05-14 11:53:02 +08:00
Shiqing Gao
dbb41575e7 hv: remove dynamic memory allocation APIs
This patch removes dynamic memory allocation APIs, including:
- calloc
- malloc
- free

The corresponding data structures, MACROs, and Kconfig items
are also removed.

v1 -> v2: no change

Tracked-On: #861
Signed-off-by: Shiqing Gao <shiqing.gao@intel.com>
2019-05-10 11:33:37 +08:00
Victor Sun
ad3658ee17 HV: remove CONFIG_CONSTANT_ACPI from Kconfig
The MACRO of CONFIG_CONSTANT_ACPI will be defined per scenario usage,
so move it from Kconfig to vm_configurations.h;

Tracked-On: #2291

Signed-off-by: Victor Sun <victor.sun@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2019-05-07 11:39:51 +08:00
Yan, Like
31efa2b522 hv: add one more guest VM to the industry scenario
This commmit added one more guest VM to the industry scenario, to
be aligned with the HLD for the industry usage.
With this commit, 4 VMs could be launched at maximum: 1 SOS VM and 3 post-launced VM.

Tracked-On: #3039
Signed-off-by: Yan, Like <like.yan@intel.com>
2019-05-05 16:38:57 +08:00
Yan, Like
624185c3ca hv: add scenario for the industry use case
This scenario is typical for industry usage with 3 VMs: 1 pre-launched SOS VM,
1 post-launched user VM for HMI and 1 post-launched  RT VM for real-time control.

Tracked-On: #3039
Signed-off-by: Yan, Like <like.yan@intel.com>
2019-04-29 17:03:19 +08:00
Sainath Grandhi
9214c84600 hv: Rename NORMAL_VM to POST_LAUNCHED_VM
The name NORMAL_VM does not clearly reflect the attribute that these VMs
are launched "later". POST_LAUNCHED_VM is closer to the fact
that these VMs are launched "later" by one of the VMs launched by ACRN.

Tracked-On: #3034
Signed-off-by: Sainath Grandhi <sainath.grandhi@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2019-04-29 09:19:51 +08:00
Conghui Chen
a3922797af HV: cleanup SHARING_MODE and PARTITION_MODE
As SHARING_MODE and PARTITION_MODE are not used anymore, cleanup the
code.

Tracked-On: #2291
Signed-off-by: Conghui Chen <conghui.chen@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2019-04-26 17:06:39 +08:00
Conghui Chen
3c92d7bbc7 HV: vuart: refine vuart config
Add vuart config in acrn_vm_config struct, support configuring 2 vuarts for
each VM. The first vuart is used to work as VM's console. The second vuart
is used to connect to other VM's vuart. When the port base for a vuart
is set to 0, hypervisor will not create this vuart.

Tracked-On: #2987
Signed-off-by: Victor Sun <victor.sun@intel.com>
Signed-off-by: Conghui Chen <conghui.chen@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2019-04-25 11:21:54 +08:00
Kaige Fu
cfe8637cc1 HV: Kconfig: Remove CPU_UP_TIMEOUT
This patch remove the over design CPU_UP_TIMEOUT and
use CPU_UP_TIMEOUT and CPU_DOWN_TIMEOUT instead.

Tracked-On: #2991
Signed-off-by: Kaige Fu <kaige.fu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2019-04-22 19:58:20 +08:00
Victor Sun
16de23d0d5 HV: move CONFIG_MAX_VM_NUM to vm configurations
Now the MAX supported VM number is defined explicitly for each scenario,
so move this config from Kconfig to VM configuration.

Tracked-On: #2291

Signed-off-by: Victor Sun <victor.sun@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2019-04-08 13:08:55 +08:00
Victor Sun
7580cddf9f HV: add scenario for logical partition
In this scenario, hypervisor will run two logical partition VMs.

Please note that the Kconfig of Hypervisor mode will be removed
gradually. In current Kconfig setting, the CONFIG_PARTITION_MODE
is still kept for now for back-compatibility.

Tracked-On: #2291

Signed-off-by: Victor Sun <victor.sun@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2019-04-02 16:00:27 +08:00
Victor Sun
56c193851a HV: introduce scenario Kconfig for sharing mode
Previously the vm_configs[] is defined separately for sharing mode and
partition mode, but the concept of hypervisor mode will be removed. Instead
we will introduce scenario Kconfig for hypervisor to load different vm
configurations.

SDC(Software Defined Cockpit) is a typical scenario that ACRN supported
so we introduce this scenario for previously sharing mode and move its
configurations to scenarios/sdc folder. The configuration could be used
for all boards reference.

Tracked-On: #2291

Signed-off-by: Victor Sun <victor.sun@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2019-04-02 16:00:27 +08:00
Li, Fei1
c018b853e9 hv: vmtrr: hide mtrr if hide_mtrr is true
Now we only configure "hide MTRR" explicitly to false for SOS. For other VMs,
we don't configure it which means hide_mtrr is false by default.
And remove global config MTRR_ENABLED

Tracked-On: #1842
Signed-off-by: Li, Fei1 <fei1.li@intel.com>
2019-03-16 17:14:12 +08:00
Tw
ce387084ed hv: remove CONFIG_PLATFORM_[SBL|UEFI] and UEFI_STUB
ACRN now has unified the way to handle SBL and UEFI.
so just remove corresponding macros in Kconfig.
BTW, default configuration in Kconfig is for UEFI boards.

Tracked-On: #2708
Signed-off-by: Tw <wei.tan@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2019-03-13 10:26:55 +08:00
Tw
334382f9ef efi-stub: minor change for uefi refactor
Include these changes:
- substitute efi_context with uefi_context
- remove EFI_STUB from Kconfig
- remove EFI_

Signed-off-by: Tw <wei.tan@intel.com>
2019-03-13 10:26:55 +08:00
Minggui Cao
9922c3a7f5 HV: correct COM_IRQ default config type
change the config type of COM_IRQ from "hex" to "int"; make
it consistent with its default value.

Tracked-On: #2689
Signed-off-by: Minggui Cao <minggui.cao@intel.com>
Reviewed-by: Geoffroy Van Cutsem <geoffroy.vancutsem@intel.com>
2019-03-07 17:52:56 +08:00
Jian Jun Chen
c69dab0a11 hv: add support of EPT mapping of high MMIO
Enlarge hypervisor BSS section to support EPT mapping of additional
1G address space. This is used to support 64bit PCI bar whose address
is strictly above 4G.

Tracked-On: #2577
Signed-off-by: Jian Jun Chen <jian.jun.chen@intel.com>
Reviewed-by: Yu Wang <yu1.wang@intel.com>
Reviewed-by: Li, Fei1 <fei1.li@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2019-02-28 18:33:11 +08:00
Grandhi, Sainath
7104f0a512 hv: Add support to add IR tables
Interrupt Remapping hardware in x86 can hold 64K entries with each entry
of size 16 bytes. So 256 entries occupy 4K. Adding a configuration for
developer to choose number of IR entries, in multiples of 256. ACRN does
not boot on platforms that does not support Interrupt Remapping and
Extended Interrupt Mode

Tracked-On: #2426
Signed-off-by: Sainath Grandhi <sainath.grandhi@intel.com>
Reviewed-by: Binbin Wu <binbin.wu@intel.com>
2019-02-01 15:54:55 +08:00
Grandhi, Sainath
4ff9f5dfb2 hv: Enumerate IOAPIC info from MADT
IOAPIC info, specifically ID, is needed to map the IOAPIC to
corresponding DMAR. DMAR table in ACPI has a field that has IOAPIC
ID, that matches the info provided in MADT. Both (IOAPIC info from
MADT and from DMAR) is needed for remapping IOAPIC interrupts.

Tracked-On: #2426
Signed-off-by: Sainath Grandhi <sainath.grandhi@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2019-02-01 15:54:55 +08:00
Tw
61552458f0 Kconfig: enlarge range of maximum number of IOMMU
Some arches have more than two IOMMUs, so change this limitation.

Tracked-On: #2435
Signed-off-by: Tw <wei.tan@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2019-01-29 11:01:34 +08:00
Victor Sun
d0eb83aa0c HV: move Kconfig IOREQ_POLLING to acrn vm config
Previously I/O emulation completion mode mode was configured in Kconfig:

	config IOREQ_NOTIFICATION
	       bool "Notification mode"
	       help
	         When I/O request is completed, SOS will mark the completion status and
	         notify hypervisor via hypercall. Hypervisor will finish the post work
	         when notification is received.

	config IOREQ_POLLING
	       bool "Polling mode"
	       help
	         When I/O request is completed, SOS will only mark completion status
	         without notifying hypervisor. Hypervisor will poll the completion
	         status and finish the post work.

Now move this configuration to guest_flags of acrn_vm_config struct.

	if ((vm_config->guest_flags & IO_COMPLETION_POLLING) != 0U) {
		I/O with polling;
	} else {
		I/O with notification;
	}

Tracked-On: #2291

Signed-off-by: Victor Sun <victor.sun@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2019-01-25 10:24:18 +08:00
Chaohong guo
5c5f43523a HV: modify RELOC kconfig option default to "enable"
re-enable RELOC kconfig as default to "y".

Tracked-On: #2349
Signed-off-by: Chaohong guo <chaohong.guo@intel.com>
2019-01-24 11:59:21 +08:00
Chaohong guo
9feab4cf29 HV: adjust the starting addr of HV to be 2M-aligned
In init_paging(), when modify page table, it does a round up to 2M on
the starting address of HV memory. If the address is not 2M aligned,
memory overwrite occurs, or memory attribute(cache, u/s) may be not
right. Besides, trusty memory (uos_sworld_memory) in .bss section is 2M
aligned during compiling,  after enabling HV memroy 2M alignment, when
relocation is enabled, EFI stub or other loaders just needs to find a
2M-aligned starting addr for HV memory.

Tracked-On: #2349
Signed-off-by: Chaohong guo <chaohong.guo@intel.com>
Reviewed-by: Zide Chen <zide.chen@intel.com>
2019-01-24 11:59:21 +08:00
Victor Sun
49e6deaf26 HV: rename the term of vm0 to sos vm
Under sharing mode, VM0 is identical with SOS VM. But the coupling of
SOS VM and VM 0 is not friendly for partition mode.

This patch is a pure term change of vm0 to sos VM, it does not change
any code logic or senmantic.

Tracked-On: #2291

Signed-off-by: Victor Sun <victor.sun@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2019-01-21 18:03:31 +08:00
Minggui Cao
23c2166aa9 HV: change serial PCI cfg to bus:dev.func format
before PCI_BDF uses its hex value like "0xC2" for "0:18.2" to
configure, now use "0:18.2" directly to make it more readable
and easier to configure.

Tracked-On: #2031
Signed-off-by: Minggui Cao <minggui.cao@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2018-12-20 10:11:02 +08:00
Minggui Cao
8d08ec30b7 HV: replace serial PCI MMIO base with BDF config
replace serial PCI MMIO base address configure with its BDF configure.

Tracked-On: #1923
Signed-off-by: Minggui Cao <minggui.cao@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-12-03 13:20:35 +08:00
Geoffroy Van Cutsem
512dbb61e3 Kconfig: remove PLATFORM configuration option
The PLATFORM configuration option is not used in any unique way. With simple
changes, we can directly use CONFIG_PLATFORM_UEFI and CONFIG_PLATFORM_SBL to
compile the ACRN hypervisor. This patch removes this config option and adjusts
the hypervisor Makefile accordingly.

The "old" way of specifying the platform from the command-line is not affected
by these changes, e.g.: "make PLATFORM=sbl"

Tracked-On: #1588
Signed-off-by: Geoffroy Van Cutsem <geoffroy.vancutsem@intel.com>
2018-11-30 23:40:41 +08:00
Geoffroy Van Cutsem
7eeeccdfad Documentation: add more Kconfig options documentation
* Add more Kconfig options documentation for the hypervisor
* Reword some existing one to improve readibility
* Break some help text to not go beyond 80 characters

Tracked-On: #1588
Signed-off-by: Geoffroy Van Cutsem <geoffroy.vancutsem@intel.com>
Co-Authored-By: David B. Kinder <david.b.kinder@intel.com>
2018-11-30 23:40:41 +08:00
Li, Fei1
bd1c0838d1 hv: trusty: reserve memory for trusty
The previous would reserve memory for trusty in SOS kernel. Howerer,
there would no available 16 MB continue memory any more after a long time.
This result in allocating memory for trusty failed. This patch will reserve
memory for trusty in ACRN hypervisor in which case the memory allocation
for trusty will never fail.

Tracked-On: #1942
Signed-off-by: Li, Fei1 <fei1.li@intel.com>
2018-11-30 16:49:27 +08:00
Geoffroy Van Cutsem
26dc54ce37 HV: allow disabling serial port via Kconfig
This patch allows to disable the serial port directly from Kconfig. This used
to only be possible from the command-line (by passing "uart=disabled"). To
disable the serial port via Kconfig, simply unselect the "Serial IO type"
option.

The default options do not seem to have any effect anymore (and were confusing
anyway) so they are removed and the serial port is enabled for various platforms
in their corresponding *.config file.

Tracked-On: #1481
Signed-off-by: Geoffroy Van Cutsem <geoffroy.vancutsem@intel.com>
2018-11-30 15:00:05 +08:00
Mingqiang Chi
b7bbf81287 hv:Replace dynamic memory with static for ptdev
-- Config MAX_PT_IRQ_ENTRIES 64 in Kconfig
-- Remove ptdev list
-- Add alloc_ptdev_entry_id api

v3-->v4:
  -- move is_entry_active from assign.c to ptdev.h
  -- Add clear active flag in release_entry
v2-->v3:
  -- Remove redundancy active check for ptdev entry
     in release_all_entries and get_ptdev_info
v1-->v2:
  -- split to small patches

Tracked-On: #861
Signed-off-by: Mingqiang Chi <mingqiang.chi@intel.com>
Reviewed-by: Jason Chen CJ <jason.cj.chen@intel.com>
Reviewed-by: Binbin Wu <binbin.wu@intel.com>
Reviewed-by: Eddie Dong <eddie.dong@intel.com>
2018-11-22 11:26:04 +08:00
dongshen
b0e1657b4f HV: Adding partition mode support for cb2_dnv
Adding partition mode support for cb2_dnv.

Tracked-On: #1853
Signed-off-by: dongshen <dongsheng.x.zhang@intel.com>
2018-11-21 15:21:37 +08:00
Shuo Liu
e8296dce05 hv: Add IO request completion polling feature
This patch introduce a new mode of IO request completion, polling mode.

Now, the sketch of ioreq process can be,
  A. UOS vcpu0 generate PIO/MMIO ->
   B. pcpu1(vcpu0 of UOS) trap into HV ->
    C. pcpu1 build ioreq, send IPI and enter idle ->
     D.1 pcpu0(vcpu0 of SOS) response IPI,
     D.2 pcpu0 handle the ioreq in HV, kernel, DM,
     D.3 pcpu0 mark ioreq as complete,
     D.4 pcpu0 hypercall to enter HV ->
       E.1 pcpu0 send IPI to wake pcpu1 up
       E.2 UOS vcpu0 continue running

With this change, it skips D.4, E.1 steps. In step C, pcpu1 will enter a
polling ioreq state idle after send out the IPI.
It can save about ~5000 cpu cycles.

In polling mode, we do the polling in idle instead of pause cpu all the
time. It will consume more power. A better way is to use monitor/mwait
instructions which can put cpu into a sleep state with monitoring a
memory address. Unfortunately, APL has bug with monitor. We can gather
all ioreqs state into one monitorable memory and take advantage of
monitor/mwait for future platform.

The way polling or notification is per VM. We can config VMs in
different mode. By default, IO request completion will use notification
mode for all VMs. We can switch it by Kconfig.

Tracked-On: #1821
Signed-off-by: Shuo Liu <shuo.a.liu@intel.com>
Reviewed-by: Eddie Dong <eddie.dong@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2018-11-21 14:35:12 +08:00
dongshen
3b87e7c67f HV: Add vuart port base address/IRQ Kconfig options
Adding Kconfig option to define the vuart port base address/IRQ.
By default, use 0x3F8/IRQ4. For MRB, use 0x3E8/IRQ6.
We are experiencing problems on NUC after changing from 0x3F8/IRQ4
to 0x3E8/IRQ6.

Tracked-On: #1817
Change-Id: Ie407e51a7bc25ac0bb4c61453c969f1466fa33ca
Signed-off-by: dongshen <dongsheng.x.zhang@intel.com>
2018-11-16 10:24:48 +08:00
Binbin Wu
2c7c909e38 hv: vtd: fix the pre-allocated context table number
In current code, there is an out of range access to the array buses defined in struct struct context_table.
This patch defines CONFIG_IOMMU_BUS_NUM to replace CONFIG_IOMMU_INIT_BUS_LIMIT, which is clearer.
CONFIG_IOMMU_BUS_NUM equals to (CONFIG_IOMMU_INIT_BUS_LIMIT + 1).

Tracked-On: #1807
Signed-off-by: Binbin Wu <binbin.wu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-11-14 09:18:18 +08:00