After ACRN devicemodel finishes the emulation of trapped MMIO/IO/PCICFG
access, it needs to inject one interrupt to notify that the guest can be
resumed.
IC_SET_IRQLINE: This is used to inject virtual IOAPIC gsi interrupt
IC_INJECT_MSI: Inject virtual MSI interrupt to guest OS
IC_VM_INTR_MONITOR:
The ioventfd/irqfd based on eventfd is one mechanism that is widely used
to implement virtio kernel backend driver. After the ioreq is trigged from
virtio front driver, the eventfd_signal is called to notify the eventfd so
that the virtio kernel backend driver is waked up to handle the request.
In order to launch the ACRN guest system, it needs to setup the mapping
between GPA (guest physical address) and HPA (host physical address).
This is based on memory virtualization and configured in EPT table.
The ioctl related with memory management is added and then the hypercall
is called so
After ACRN hypervisor captures the io_request(mmio, IO, PCI access) from
guest OS, it will send the IRQ interrupt to SOS system.
The HYPERVISOR_CALLBACK_VECTOR ISR handler will be executed and it
needs to call the driver-specific ISR handler to dispatch emulated
io_request.
After the emulation of
ACRN hypervisor service module is the important middle layer that allows
the Linux kernel to communicate with the ACRN hypervisor. It includes
the management of virtualized CPU/memory/device/interrupt for other ACRN
guest. The user-space applications can use the provided ACRN ioctls to
interact
ACRN is a flexible, lightweight reference hypervisor, built with real-time
and safety-criticality in mind, optimized to streamline embedded development
through an open source platform. It is built for embedded IOT with small
footprint and real-time features. More details can be found
in
In order to assure that the ACRN module can work with the required ACRN
hypervisor, it needs to check whether the required version is consistent
with the queried version from ACRN ypervisor. If it is inconsistent, it
won't coninue the initialization of ACRN_HSM module.
Similarly the user-space
When ACRN hypervisor is detected, the hypercall is needed so that the
ACRN guest can query/config some settings. For example: it can be used
to query the resources in hypervisor and manage the CPU/memory/device/
interrupt for guest operating system.
On x86 it is implemented with the VMCALL
Pass-through device plays an important role for guest OS when it is
accessed exclusively by guest OS. This is critical for the performance
scenario. After one PCI device is assigned to guest OS, it can be
accessed exclusively by guest system. It can avoid the device emulation
and provide the
The px/cx data is critical to support the power transition. DM will get
these data to build DSDT for UOS. With this DSDT, UOS would have the
capability on power control if acpi-cpufreq/idle driver is enabled in
kernel.
Add the PM ioctl that is used to obtain the info of power state
so that the DM
The ACRN-hypervisor works in partition mode. In such case the guest OS
and domain0 kernel will run in the different CPUs. In course of booting
domain0 kernel, it can use all the available CPUs,which can accelerate
the booting. But after the booting is finished, it needs to offline the
other CPUs
After guest UOS is booted, the MMIO/IO access will cause that
it exits from VMX non-root env into ACRN hypervisor. Then the ACRN
hypervisor will inject virtual irq into the Linux guest with ACRN HSM
module. The ACRN_HSM handles this virtual irq (which is based on
HYPERVISOR_CALLBACK_VECTOR),
After the ACRN hypervisor sends the upcall notify interrupt, the upcall ISR
handler will be served. Now almost nothing is handled in upcall ISR handler
except acking EOI.
The driver-specific ISR handler is registered by the driver, which helps to
handle the real notification from ACRN hypervisor.
After the user-space calls the ioctls, the module will then call the
defined hypercall so that the ACRN hypervisor can take the corresponding
action. It includes the management of creating vcpu, guest memory
management and interrupt injection, pass-through device management.
The available
The VM management is one important role of acrn module. It is used to
manage another VM based on the user-space ioctls. It includes the
following VM operation: CREATE/START/PAUSE/DESTROY VM, CREATE_VCPU,
IC_SET_VCPU_REGS.
acrn_ioctl is provided so that the user of /dev/acrn_hsm can manage
the VM
After lapic is switched from xapic to x2apic mode, it can use the APIC
MSR register to access local apic register in ACRN guest. This will
help to remove some traps of lapic access in ACRN guest.
Report the X2APIC so that the ACRN guest can be switched to x2apic mode.
Co-developed-by: Jason Chen
On 8/14/19 4:15 PM, Russell King - ARM Linux admin wrote:
On Wed, Aug 14, 2019 at 04:00:30PM -0700, Steve Longerbeam wrote:
On 8/14/19 3:04 PM, Russell King - ARM Linux admin wrote:
On Wed, Aug 14, 2019 at 12:04:41PM -0700, Steve Longerbeam wrote:
On 8/14/19 3:30 AM, Russell King - ARM
Hi Linus,
On Thu, Aug 15, 2019 at 09:18:12AM -0700, Linus Torvalds wrote:
> On Thu, Aug 15, 2019 at 2:06 AM Greg Kroah-Hartman
> wrote:
> >
> > I know everyone is busy, but given the length this has been in staging,
> > and the constant good progress toward cleaning it all up that has been
> >
On Thu, Aug 08, 2019 at 03:27:25PM -0700, Hridya Valsaraju wrote:
> Currently, since each binderfs instance needs its own
> private binder devices, every time a binderfs instance is
> mounted, all the default binder devices need to be created
> via the BINDER_CTL_ADD IOCTL. This patch aims to
>
On Thu, Aug 08, 2019 at 03:27:25PM -0700, Hridya Valsaraju wrote:
> Currently, since each binderfs instance needs its own
> private binder devices, every time a binderfs instance is
> mounted, all the default binder devices need to be created
> via the BINDER_CTL_ADD IOCTL. This patch aims to
>
Hi Linus,
On Thu, Aug 15, 2019 at 09:13:19AM -0700, Linus Torvalds wrote:
> On Wed, Aug 14, 2019 at 9:42 PM Gao Xiang wrote:
> >
> > +
> > +static const unsigned char erofs_filetype_table[EROFS_FT_MAX] = {
> > + [EROFS_FT_UNKNOWN] = DT_UNKNOWN,
> > + [EROFS_FT_REG_FILE] =
On Thu, Aug 08, 2019 at 03:27:26PM -0700, Hridya Valsaraju wrote:
> Length of a binderfs device name cannot exceed BINDERFS_MAX_NAME.
> This patch adds a check in binderfs_init() to ensure the same
> for the default binder devices that will be created in every
> binderfs instance.
>
>
On Thu, Aug 15, 2019 at 2:06 AM Greg Kroah-Hartman
wrote:
>
> I know everyone is busy, but given the length this has been in staging,
> and the constant good progress toward cleaning it all up that has been
> happening, I want to get this moved out of staging soon.
Since it doesn't touch
On Wed, Aug 14, 2019 at 9:42 PM Gao Xiang wrote:
>
> +
> +static const unsigned char erofs_filetype_table[EROFS_FT_MAX] = {
> + [EROFS_FT_UNKNOWN] = DT_UNKNOWN,
> + [EROFS_FT_REG_FILE] = DT_REG,
> + [EROFS_FT_DIR] = DT_DIR,
> + [EROFS_FT_CHRDEV] =
On Thu, Aug 08, 2019 at 03:27:24PM -0700, Hridya Valsaraju wrote:
> Binderfs was created to help provide private binder devices to
> containers in their own IPC namespace. Currently, every time a new binderfs
> instance is mounted, its private binder devices need to be created via
> IOCTL calls.
On Thu, Aug 15, 2019 at 11:26:40AM -0400, hugoziviani wrote:
> Fix checkpatch error "CHECK: Remove unecessary parenthesis in
> drivers/staging/rtl8712/rtl871x_mlme.c"
>
> Signed-off-by: hugoziviani
> ---
> drivers/staging/rtl8712/rtl871x_mlme.c | 84 +-
> 1 file
Fix checkpatch error "CHECK: Remove unecessary parenthesis in
drivers/staging/rtl8712/rtl871x_mlme.c"
Signed-off-by: hugoziviani
---
drivers/staging/rtl8712/rtl871x_mlme.c | 84 +-
1 file changed, 42 insertions(+), 42 deletions(-)
diff --git
On 15/08/2019 11:53, Colin King wrote:
From: Colin Ian King
Variable fx2delay is being initialized with a value that is never read
and fx2delay is being re-assigned a little later on. The assignment is
redundant and hence can be removed.
Addresses-Coverity: ("Unused value")
Signed-off-by:
There is some "confusing" license text in some of the sm750fb driver
files. After discussing it with the company, it turns out to have been
a mistake and these lines can be safely removed. The files are all to
be licensed under the GPLv2 license.
Cc: Sudip Mukherjee
Cc: Teddy Wang
Cc:
On 8/15/19 12:21 PM, Colin Ian King wrote:
> Hi,
>
> Static analysis with Coverity Scan has detected a potential assignment
> bug in ad5380.c:
>
> 217case IIO_CHAN_INFO_CALIBBIAS:
> 218ret = regmap_read(st->regmap,
> AD5380_REG_OFFSET(chan->address),
> 219
From: Colin Ian King
Variable fx2delay is being initialized with a value that is never read
and fx2delay is being re-assigned a little later on. The assignment is
redundant and hence can be removed.
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King
---
Hi,
Static analysis with Coverity Scan has detected a potential assignment
bug in ad5380.c:
217case IIO_CHAN_INFO_CALIBBIAS:
218ret = regmap_read(st->regmap,
AD5380_REG_OFFSET(chan->address),
219val);
220if (ret)
221
On Thu, Aug 15, 2019 at 12:41:31PM +0800, Gao Xiang wrote:
> [I strip the previous cover letter, the old one can be found in v6:
> https://lore.kernel.org/r/20190802125347.166018-1-gaoxian...@huawei.com/]
>
> We'd like to submit a formal moving patch applied to staging tree
> for 5.4, before
From: Colin Ian King
There is a statement that is indented one level too deeply, remove
the extraneous tab.
Addresses-Coverity: ("Identation does not match nesting level")
Signed-off-by: Colin Ian King
---
drivers/staging/rtl8192u/r8190_rtl8256.c | 4 ++--
1 file changed, 2 insertions(+), 2
Hi Pavel,
On Thu, Aug 15, 2019 at 09:01:32AM +0200, Pavel Machek wrote:
> Hi!
>
> > > > + /*
> > > > +* on-disk error, let's only BUG_ON in the debugging mode.
> > > > +* otherwise, it will return 1 to just skip the invalid name
> > > > +* and go on (in
Hi!
> > > + /*
> > > + * on-disk error, let's only BUG_ON in the debugging mode.
> > > + * otherwise, it will return 1 to just skip the invalid name
> > > + * and go on (in consideration of the lookup performance).
> > > + */
> > > + DBG_BUGON(qd->name > qd->end);
> >
> > I believe you
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