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Kernel: Add a quickmap region for each processor

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Threads need to be able to concurrently quickmap things.
This commit is contained in:
Tom 2020-06-28 16:04:35 -06:00 • committed by Andreas Kling
parent d249b5df8f
commit 2a38cc9a12
5 changed files with 56 additions and 22 deletions
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5
Kernel/Arch/i386/CPU.cpp
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@ -215,7 +215,7 @@ void page_fault_handler(TrapFrame* trap)
#ifdef PAGE_FAULT_DEBUG
u32 fault_page_directory = read_cr3();
dbg() << "Ring " << (regs.cs & 3)
dbg() << "CPU #" << (Processor::is_initialized() ? Processor::current().id() : 0) << " ring " << (regs.cs & 3)
<< " " << (regs.exception_code & 1 ? "PV" : "NP")
<< " page fault in PD=" << String::format("%x", fault_page_directory) << ", "
<< (regs.exception_code & 8 ? "reserved-bit " : "")
@ -831,6 +831,7 @@ void Processor::initialize(u32 cpu)
m_idle_thread = nullptr;
m_current_thread = nullptr;
m_mm_data = nullptr;
gdt_init();
if (cpu == 0)
@ -859,7 +860,7 @@ void Processor::initialize(u32 cpu)
(*s_processors)[cpu] = this;
}
klog() << "CPU #" << cpu << " using Processor at " << VirtualAddress(FlatPtr(this));
klog() << "CPU[" << cpu << "]: initialized Processor at " << VirtualAddress(FlatPtr(this));
}
void Processor::write_raw_gdt_entry(u16 selector, u32 low, u32 high)

12
Kernel/Arch/i386/CPU.h
View file

@ -611,6 +611,7 @@ struct TrapFrame;
#define GDT_SELECTOR_TSS 0x38
class ProcessorInfo;
struct MemoryManagerData;
class Processor {
Processor* m_self; // must be first field (%fs offset 0x0)
@ -626,6 +627,7 @@ class Processor {
static FPUState s_clean_fpu_state;
ProcessorInfo* m_info;
MemoryManagerData* m_mm_data;
Thread* m_current_thread;
Thread* m_idle_thread;
@ -668,6 +670,16 @@ public:
return get_fs() == GDT_SELECTOR_PROC && read_fs_u32(0) != 0;
}
ALWAYS_INLINE void set_mm_data(MemoryManagerData& mm_data)
{
m_mm_data = &mm_data;
}
ALWAYS_INLINE MemoryManagerData& get_mm_data() const
{
return *m_mm_data;
}
ALWAYS_INLINE Thread* idle_thread() const
{
return m_idle_thread;