mirror of
https://github.com/projectacrn/acrn-hypervisor.git
synced 2025-08-09 03:58:34 +00:00
doc: terminology cleanup in kernel params
- Replace SOS or Service OS with Service VM - Clean up some of the grammar Signed-off-by: Amy Reyes <amy.reyes@intel.com>
This commit is contained in:
Amy Reyes
David Kinder
parent
cf619333aa
commit
60f9d0bc9a
@ -20,7 +20,7 @@ relevant for configuring or debugging ACRN-based systems.
|
||||
* - Parameter
|
||||
- Used in Service VM or User VM
|
||||
- Description
|
||||
- Usage example
|
||||
- Usage Example
|
||||
|
||||
* - ``module_blacklist``
|
||||
- Service VM
|
||||
@ -32,14 +32,14 @@ relevant for configuring or debugging ACRN-based systems.
|
||||
module_blacklist=dwc3_pci
|
||||
|
||||
* - ``no_timer_check``
|
||||
- Service VM,User VM
|
||||
- Disables the code which tests for broken timer IRQ sources.
|
||||
- Service VM, User VM
|
||||
- Disables the code that tests for broken timer IRQ sources.
|
||||
- ::
|
||||
|
||||
no_timer_check
|
||||
|
||||
* - ``console``
|
||||
- Service VM,User VM
|
||||
- Service VM, User VM
|
||||
- Output console device and options.
|
||||
|
||||
``tty<n>``
|
||||
@ -50,9 +50,9 @@ relevant for configuring or debugging ACRN-based systems.
|
||||
``9600n8`` meaning 9600 baud, no parity, 8 bits. Options are of the form *bbbbpnf*,
|
||||
where:
|
||||
|
||||
| *bbbb* is baud rate, for example 9600;
|
||||
| *p* is parity, one of ``n``, ``o``, or ``e`` (for none, odd, or even),
|
||||
| *n* is number of bits (typically 8),
|
||||
| *bbbb* is baud rate, for example, 9600
|
||||
| *p* is parity, one of ``n``, ``o``, or ``e`` (for none, odd, or even)
|
||||
| *n* is number of bits (typically 8)
|
||||
| *f* is flow control (``r`` for RTS, or left blank)
|
||||
|
||||
``hvc<n>``
|
||||
@ -66,31 +66,31 @@ relevant for configuring or debugging ACRN-based systems.
|
||||
|
||||
* - ``loglevel``
|
||||
- Service VM
|
||||
- All Kernel messages with a loglevel less than the console loglevel will
|
||||
- All kernel messages with a loglevel less than the console loglevel will
|
||||
be printed to the console. The loglevel can also be changed with
|
||||
``klogd`` or other programs. The loglevels are defined as follows:
|
||||
|
||||
.. list-table::
|
||||
:header-rows: 1
|
||||
|
||||
* - loglevel value
|
||||
* - Loglevel Value
|
||||
- Definition
|
||||
* - 0 (KERN_EMERG)
|
||||
- system is unusable
|
||||
- System is unusable
|
||||
* - 1 (KERN_ALERT)
|
||||
- action must be taken immediately
|
||||
- Action must be taken immediately
|
||||
* - 2 (KERN_CRIT)
|
||||
- critical conditions
|
||||
- Critical conditions
|
||||
* - 3 (KERN_ERR)
|
||||
- error conditions
|
||||
- Error conditions
|
||||
* - 4 (KERN_WARNING)
|
||||
- warning conditions
|
||||
- Warning conditions
|
||||
* - 5 (KERN_NOTICE)
|
||||
- normal but significant condition
|
||||
- Normal but significant condition
|
||||
* - 6 (KERN_INFO)
|
||||
- informational
|
||||
- Informational
|
||||
* - 7 (KERN_DEBUG)
|
||||
- debug-level messages
|
||||
- Debug-level messages
|
||||
- ::
|
||||
|
||||
loglevel=7
|
||||
@ -99,8 +99,8 @@ relevant for configuring or debugging ACRN-based systems.
|
||||
- User VM
|
||||
- Ignoring loglevel setting will print **all**
|
||||
kernel messages to the console. Useful for debugging.
|
||||
We also add it as printk module parameter, so users
|
||||
could change it dynamically, usually by changing
|
||||
We also add it as the ``printk`` module parameter, so users
|
||||
can change it dynamically, usually by changing
|
||||
``/sys/module/printk/parameters/ignore_loglevel``.
|
||||
- ::
|
||||
|
||||
@ -109,19 +109,19 @@ relevant for configuring or debugging ACRN-based systems.
|
||||
|
||||
* - ``log_buf_len``
|
||||
- User VM
|
||||
- Sets the size of the printk ring buffer,
|
||||
- Sets the size of the ``printk`` ring buffer,
|
||||
in bytes. n must be a power of two and greater
|
||||
than the minimal size. The minimal size is defined
|
||||
by LOG_BUF_SHIFT kernel config parameter. There is
|
||||
also CONFIG_LOG_CPU_MAX_BUF_SHIFT config parameter
|
||||
by the ``LOG_BUF_SHIFT`` kernel config parameter. There is
|
||||
also the ``CONFIG_LOG_CPU_MAX_BUF_SHIFT`` config parameter
|
||||
that allows to increase the default size depending on
|
||||
the number of CPUs. See init/Kconfig for more details."
|
||||
the number of CPUs. See ``init/Kconfig`` for more details.
|
||||
- ::
|
||||
|
||||
log_buf_len=16M
|
||||
|
||||
* - ``consoleblank``
|
||||
- Service VM,User VM
|
||||
- Service VM, User VM
|
||||
- The console blank (screen saver) timeout in
|
||||
seconds. Defaults to 600 (10 minutes). A value of 0
|
||||
disables the blank timer.
|
||||
@ -130,34 +130,34 @@ relevant for configuring or debugging ACRN-based systems.
|
||||
consoleblank=0
|
||||
|
||||
* - ``rootwait``
|
||||
- Service VM,User VM
|
||||
- Service VM, User VM
|
||||
- Wait (indefinitely) for root device to show up.
|
||||
Useful for devices that are detected asynchronously
|
||||
(e.g. USB and MMC devices).
|
||||
(e.g., USB and MMC devices).
|
||||
- ::
|
||||
|
||||
rootwait
|
||||
|
||||
* - ``root``
|
||||
- Service VM,User VM
|
||||
- Define the root filesystem
|
||||
- Service VM, User VM
|
||||
- Define the root filesystem.
|
||||
|
||||
``/dev/<disk_name><decimal>``
|
||||
represents the device number of the partition - device
|
||||
number of disk plus the partition number
|
||||
number of disk plus the partition number.
|
||||
|
||||
``/dev/<disk_name>p<decimal>``
|
||||
same as above, this form is used when disk name of
|
||||
the partitioned disk ends with a digit. To separate
|
||||
disk name and partition slot, a 'p' is inserted.
|
||||
same as above, this form is used when the disk name of
|
||||
the partitioned disk ends with a digit. To separate the
|
||||
disk name and partition slot, a ``p`` is inserted.
|
||||
|
||||
``PARTUUID=00112233-4455-6677-8899-AABBCCDDEEFF``
|
||||
representing the unique id of a partition if the
|
||||
represents the unique ID of a partition if the
|
||||
partition table provides it. The UUID may be either
|
||||
an EFI/GPT UUID, or refer to an MSDOS
|
||||
partition using the format SSSSSSSS-PP, where SSSSSSSS is a
|
||||
zero-filled hexadecimal representation of the 32-bit
|
||||
"NT disk signature", and PP is a zero-filled hexadecimal
|
||||
NT disk signature, and PP is a zero-filled hexadecimal
|
||||
representation of the 1-based partition number.
|
||||
- ::
|
||||
|
||||
@ -166,8 +166,8 @@ relevant for configuring or debugging ACRN-based systems.
|
||||
root=PARTUUID=00112233-4455-6677-8899-AABBCCDDEEFF
|
||||
|
||||
* - ``rw``
|
||||
- Service VM,User VM
|
||||
- Mount root device read/write on boot
|
||||
- Service VM, User VM
|
||||
- Mount the root device read/write on boot.
|
||||
- ::
|
||||
|
||||
rw
|
||||
@ -179,7 +179,7 @@ relevant for configuring or debugging ACRN-based systems.
|
||||
Format: <string>, where the only supported value is:
|
||||
|
||||
``reliable``:
|
||||
Mark TSC clocksource as reliable, and disables clocksource
|
||||
Mark TSC clocksource as reliable, and disable clocksource
|
||||
verification at runtime, and the stability checks done at boot.
|
||||
Used to enable high-resolution timer mode on older hardware, and in
|
||||
virtualized environments.
|
||||
@ -207,15 +207,17 @@ relevant for configuring or debugging ACRN-based systems.
|
||||
from the guest VM.
|
||||
|
||||
If hypervisor relocation is disabled, verify that
|
||||
:option:`hv.MEMORY.HV_RAM_START` and the hypervisor RAM size computed by the linker
|
||||
:option:`hv.MEMORY.HV_RAM_START` and the hypervisor RAM size computed by
|
||||
the linker
|
||||
do not overlap with the hypervisor's reserved buffer space allocated
|
||||
in the Service VM. Service VM GPA and HPA are a 1:1 mapping.
|
||||
|
||||
If hypervisor relocation is enabled, reserve the memory below 256MB,
|
||||
since hypervisor could be relocated anywhere between 256MB and 4GB.
|
||||
since the hypervisor could be relocated anywhere between 256MB and 4GB.
|
||||
|
||||
You should enable ASLR on SOS. This ensures that when guest Linux is
|
||||
relocating kernel image, it will avoid this buffer address.
|
||||
Enable address space layout randomization (ASLR) on the Service VM.
|
||||
This ensures that when the guest Linux is relocating the kernel image,
|
||||
it will avoid this buffer address.
|
||||
|
||||
- ::
|
||||
|
||||
@ -254,7 +256,7 @@ relevant for configuring or debugging ACRN-based systems.
|
||||
|
||||
* - ``reboot_panic``
|
||||
- Service VM
|
||||
- Reboot in case of panic
|
||||
- Reboot in case of panic.
|
||||
|
||||
The comma-delimited parameters are:
|
||||
|
||||
@ -281,7 +283,7 @@ relevant for configuring or debugging ACRN-based systems.
|
||||
|
||||
``maxcpus=n`` where n >= 0 limits
|
||||
the kernel to bring up ``n`` processors during system boot.
|
||||
Giving n=0 is a special case, equivalent to ``nosmp``,which
|
||||
Giving n=0 is a special case, equivalent to ``nosmp``, which
|
||||
also disables the I/O APIC.
|
||||
|
||||
After booting, you can bring up additional plugged CPUs by executing
|
||||
@ -291,9 +293,9 @@ relevant for configuring or debugging ACRN-based systems.
|
||||
|
||||
maxcpus=1
|
||||
|
||||
* - nohpet
|
||||
* - ``nohpet``
|
||||
- User VM
|
||||
- Don't use the HPET timer
|
||||
- Don't use the HPET timer.
|
||||
- ::
|
||||
|
||||
nohpet
|
||||
@ -303,23 +305,23 @@ relevant for configuring or debugging ACRN-based systems.
|
||||
- Intel IOMMU driver (DMAR) option
|
||||
|
||||
``on``:
|
||||
Enable intel iommu driver.
|
||||
Enable Intel IOMMU driver.
|
||||
|
||||
``off``:
|
||||
Disable intel iommu driver.
|
||||
Disable Intel IOMMU driver.
|
||||
|
||||
``igfx_off``:
|
||||
By default, gfx is mapped as normal device. If a gfx
|
||||
By default, gfx is mapped as a normal device. If a gfx
|
||||
device has a dedicated DMAR unit, the DMAR unit is
|
||||
bypassed by not enabling DMAR with this option. In
|
||||
this case, gfx device will use physical address for DMA.
|
||||
this case, the gfx device will use the physical address for DMA.
|
||||
- ::
|
||||
|
||||
intel_iommu=off
|
||||
|
||||
* - ``hugepages``
|
||||
``hugepagesz``
|
||||
- Service VM,User VM
|
||||
- Service VM, User VM
|
||||
- ``hugepages``:
|
||||
HugeTLB pages to allocate at boot.
|
||||
|
||||
@ -335,7 +337,7 @@ relevant for configuring or debugging ACRN-based systems.
|
||||
hugepagesz=1G
|
||||
|
||||
.. note:: The ``hugepages`` and ``hugepagesz`` parameters are automatically
|
||||
taken care of by ACRN config tool. In case user have customized hugepage
|
||||
settings to satisfy their particular workloads in Service VM, the ``hugepages``
|
||||
and ``hugepagesz`` parameters could be redefined in GRUB menu to override
|
||||
the settings from ACRN config tool.
|
||||
taken care of by the ACRN Configurator tool. If users have customized
|
||||
hugepage settings to satisfy their particular workloads in the Service VM,
|
||||
the ``hugepages`` and ``hugepagesz`` parameters can be redefined in the GRUB
|
||||
menu to override the settings from the ACRN Configurator tool.
|
||||
|
||||
Loading…
Reference in New Issue
Block a user