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Kernel: Slap UNMAP_AFTER_INIT on a whole bunch of functions

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There's no real system here, I just added it to various functions
that I don't believe we ever want to call after initialization
has finished.

With these changes, we're able to unmap 60 KiB of kernel text
after init. :^)
This commit is contained in:
Andreas Kling 2021-02-19 18:41:50 +01:00
parent 32e93c8808
commit fdf03852c9
22 changed files with 69 additions and 68 deletions
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14
Kernel/Interrupts/APIC.cpp
View file

@ -146,7 +146,7 @@ APIC& APIC::the()
return *s_apic;
}
void APIC::initialize()
UNMAP_AFTER_INIT void APIC::initialize()
{
ASSERT(!APIC::initialized());
s_apic.ensure_instance();
@ -234,7 +234,7 @@ u8 APIC::spurious_interrupt_vector()
+ reinterpret_cast<ptrdiff_t>(&varname) \
- reinterpret_cast<ptrdiff_t>(&apic_ap_start))
bool APIC::init_bsp()
UNMAP_AFTER_INIT bool APIC::init_bsp()
{
// FIXME: Use the ACPI MADT table
if (!MSR::have())
@ -300,7 +300,7 @@ bool APIC::init_bsp()
return true;
}
void APIC::do_boot_aps()
UNMAP_AFTER_INIT void APIC::do_boot_aps()
{
ASSERT(m_processor_enabled_cnt > 1);
u32 aps_to_enable = m_processor_enabled_cnt - 1;
@ -400,7 +400,7 @@ void APIC::do_boot_aps()
#endif
}
void APIC::boot_aps()
UNMAP_AFTER_INIT void APIC::boot_aps()
{
if (m_processor_enabled_cnt <= 1)
return;
@ -421,7 +421,7 @@ void APIC::boot_aps()
m_apic_ap_continue.store(1, AK::MemoryOrder::memory_order_release);
}
void APIC::enable(u32 cpu)
UNMAP_AFTER_INIT void APIC::enable(u32 cpu)
{
if (cpu >= 8) {
// TODO: x2apic support?
@ -472,7 +472,7 @@ Thread* APIC::get_idle_thread(u32 cpu) const
return m_ap_idle_threads[cpu - 1];
}
void APIC::init_finished(u32 cpu)
UNMAP_AFTER_INIT void APIC::init_finished(u32 cpu)
{
// This method is called once the boot stack is no longer needed
ASSERT(cpu > 0);
@ -525,7 +525,7 @@ void APIC::send_ipi(u32 cpu)
write_icr(ICRReg(IRQ_APIC_IPI + IRQ_VECTOR_BASE, ICRReg::Fixed, ICRReg::Logical, ICRReg::Assert, ICRReg::TriggerMode::Edge, ICRReg::NoShorthand, cpu));
}
APICTimer* APIC::initialize_timers(HardwareTimerBase& calibration_timer)
UNMAP_AFTER_INIT APICTimer* APIC::initialize_timers(HardwareTimerBase& calibration_timer)
{
if (!m_apic_base)
return nullptr;

12
Kernel/Interrupts/InterruptManagement.cpp
View file

@ -56,7 +56,7 @@ InterruptManagement& InterruptManagement::the()
return *s_interrupt_management;
}
void InterruptManagement::initialize()
UNMAP_AFTER_INIT void InterruptManagement::initialize()
{
ASSERT(!InterruptManagement::initialized());
s_interrupt_management = new InterruptManagement();
@ -125,7 +125,7 @@ RefPtr<IRQController> InterruptManagement::get_responsible_irq_controller(u8 int
ASSERT_NOT_REACHED();
}
PhysicalAddress InterruptManagement::search_for_madt()
UNMAP_AFTER_INIT PhysicalAddress InterruptManagement::search_for_madt()
{
dbgln("Early access to ACPI tables for interrupt setup");
auto rsdp = ACPI::StaticParsing::find_rsdp();
@ -134,13 +134,13 @@ PhysicalAddress InterruptManagement::search_for_madt()
return ACPI::StaticParsing::find_table(rsdp.value(), "APIC");
}
InterruptManagement::InterruptManagement()
UNMAP_AFTER_INIT InterruptManagement::InterruptManagement()
: m_madt(search_for_madt())
{
m_interrupt_controllers.resize(1);
}
void InterruptManagement::switch_to_pic_mode()
UNMAP_AFTER_INIT void InterruptManagement::switch_to_pic_mode()
{
klog() << "Interrupts: Switch to Legacy PIC mode";
InterruptDisabler disabler;
@ -159,7 +159,7 @@ void InterruptManagement::switch_to_pic_mode()
}
}
void InterruptManagement::switch_to_ioapic_mode()
UNMAP_AFTER_INIT void InterruptManagement::switch_to_ioapic_mode()
{
klog() << "Interrupts: Switch to IOAPIC mode";
InterruptDisabler disabler;
@ -196,7 +196,7 @@ void InterruptManagement::switch_to_ioapic_mode()
APIC::the().init_bsp();
}
void InterruptManagement::locate_apic_data()
UNMAP_AFTER_INIT void InterruptManagement::locate_apic_data()
{
ASSERT(!m_madt.is_null());
auto madt = map_typed<ACPI::Structures::MADT>(m_madt);