Sinipelto/banan-os
1
0
Fork 0
forked from Bananymous/banan-os
Code Pull Requests Activity

Kernel: rework the whole PageTable structure

Browse Source 
We now have page table structure for kernel memory which is shared
between all processes.
This commit is contained in:
Bananymous
2023-07-05 23:41:35 +03:00
parent 60fe5a656c
commit 4086d7c3be
13 changed files with 215 additions and 165 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
kernel/arch/x86_64/IDT.cpp
View File

@@ -137,21 +137,6 @@ namespace IDT
extern "C" void cpp_isr_handler(uint64_t isr, uint64_t error, const Registers* regs)
{
if (isr == ISR::PageFault)
{
using namespace Kernel;
vaddr_t vaddr = regs->cr2 & PAGE_ADDR_MASK;
if (!PageTable::kernel().is_page_free(vaddr))
{
auto paddr = kmalloc_paddr_of(vaddr);
ASSERT(paddr.has_value());
PageTable::current().map_page_at(paddr.value(), vaddr, PageTable::Flags::ReadWrite | PageTable::Flags::Present);
return;
}
}
pid_t tid = Kernel::Scheduler::current_tid();
pid_t pid = tid ? Kernel::Process::current().pid() : 0;