protected override MemoryRegion AllocRawMemory(uint size)
{
var kmap = PhysicalPageManager.AllocateRegion(size);
KernelMemoryMapManager.Header->Used.Add(new KernelMemoryMap(kmap.Start, kmap.Size, BootInfoMemoryType.PageFrameAllocator, AddressSpaceKind.Virtual));
PageTable.KernelTable.Map(kmap.Start, kmap.Start, PhysicalPageManager.GetAllocatorByAddr(kmap.Start), flush: true);
PageTable.KernelTable.SetWritable(kmap.Start, kmap.Size);
kmap.Clear();
return(kmap);
}
private static uint Cmd_RequestMemory(SysCallContext *context, SystemMessage *args)
{
var size = args->Arg1;
size = KMath.AlignValueCeil(size, 4096);
var proc = Scheduler.GetCurrentThread().Process;
var map = PhysicalPageManager.AllocateRegion(size);
var virtAddr = proc.UserPageAllocator.AllocatePagesAddr(size / 4096);
Scheduler.GetCurrentThread().Process.PageTable.Map(virtAddr, map.Start, PhysicalPageManager.GetAllocatorByAddr(map.Start));
return(virtAddr);
}
