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Kernel: Allow switching to IOAPIC mode even without enabling SMP

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This small change allows to use the IOAPIC by default without to enable
SMP mode, which emulates Uni-Processor setup with IOAPIC instead of
using the PIC.

This opens the opportunity to utilize other types of interrupts like MSI
and MSI-X interrupts.
This commit is contained in:
Liav A 2021-11-28 17:38:10 +02:00 • committed by Andreas Kling
parent f57900a41b
commit ac7953f945
Notes: sideshowbarker 2024-07-17 22:47:30 +09:00
5 changed files with 41 additions and 29 deletions
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10
Kernel/CommandLine.cpp
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@ -111,6 +111,16 @@ UNMAP_AFTER_INIT bool CommandLine::is_smp_enabled() const
return lookup("smp"sv).value_or("off"sv) == "on"sv;
}
UNMAP_AFTER_INIT bool CommandLine::is_ioapic_enabled() const
{
auto value = lookup("enable_ioapic"sv).value_or("on"sv);
if (value == "on"sv)
return true;
if (value == "off"sv)
return false;
PANIC("Unknown enable_ioapic setting: {}", value);
}
UNMAP_AFTER_INIT bool CommandLine::is_vmmouse_enabled() const
{
return lookup("vmmouse"sv).value_or("on"sv) == "on"sv;