diff options
Diffstat (limited to 'Base')
| -rw-r--r-- | Base/usr/share/man/man7/boot_parameters.md | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/Base/usr/share/man/man7/boot_parameters.md b/Base/usr/share/man/man7/boot_parameters.md index d9c2e6d342..f38a06038d 100644 --- a/Base/usr/share/man/man7/boot_parameters.md +++ b/Base/usr/share/man/man7/boot_parameters.md @@ -35,6 +35,12 @@ List of options: * **`disable_virtio`** - If present on the command line, virtio devices will not be detected, and initialized on boot. +* **`enable_ioapic`** - This parameter expects **`on`** or **`off`** and is by default set to **`on`**. + When set to **`off`**, the kernel will initialize the two i8259 PICs. + When set to **`on`**, the kernel will try to initialize the IOAPIC (or IOAPICs if there's more than one), + but only if **`acpi`** is set to **`limited`** or **`on`**, and a `MADT` (APIC) table is available. + Otherwise, the kernel will fallback to use the i8259 PICs. + * **`fbdev`** - This parameter expects **`on`** or **`off`**. * **`force_pio`** - If present on the command line, the IDE controllers will be force into PIO mode when initialized IDE Channels on boot. @@ -53,11 +59,12 @@ List of options: * **`pci_ecam`** - This parameter expects **`on`** or **`off`**. * **`root`** - This parameter configures the device to use as the root file system. It defaults to **`/dev/hda`** if unspecified. - + * **`smp`** - This parameter expects a binary value of **`on`** or **`off`**. If enabled kernel will - use [APIC](https://en.wikipedia.org/wiki/Advanced_Programmable_Interrupt_Controller) mode - for handling interrupts instead of [PIC](https://en.wikipedia.org/wiki/Programmable_interrupt_controller) mode. - This parameter defaults to **`off`**. + enable available APs (application processors) and use them with the BSP (Bootstrap processor) to + schedule and run threads. + This parameter defaults to **`off`**. This parameter requires **`enable_ioapic`** to be enabled + and and a `MADT` (APIC) table to be available. * **`system_mode`** - This parameter is not interpreted by the Kernel, and is made available at `/proc/system_mode`. SystemServer uses it to select the set of services that should be started. Common values are: - **`graphical`** (default) - Boots the system in the normal graphical mode. |