public static void UnMap(this IPageTable table, Addr virtAddr, USize length, bool flush = false)
{
if (KConfig.Log.MemoryMapping && length > 4096)
{
KernelMessage.WriteLine("UnMap: virt={0:X8}, length={2:X8}", virtAddr, length);
}
var pages = KMath.DivCeil(length, 4096);
for (var i = 0; i < pages; i++)
{
table.MapVirtualAddressToPhysical(virtAddr, 0, false);
virtAddr += 4096;
}
if (flush)
{
table.Flush();
}
}
/// <summary>
/// Sync specific mappings with another table.
/// </summary>
public static void MapCopy(this IPageTable table, IPageTable fromTable, Addr virtAddr, USize length, bool present = true, bool flush = false)
{
if (KConfig.Log.MemoryMapping && length > 4096)
{
KernelMessage.WriteLine("MapCopy: virt={0:X8}, length={1:X8}", virtAddr, length);
}
var pages = KMath.DivCeil(length, 4096);
for (var i = 0; i < pages; i++)
{
var physAddr = fromTable.GetPhysicalAddressFromVirtual(virtAddr);
table.MapVirtualAddressToPhysical(virtAddr, physAddr, present);
virtAddr += 4096;
}
if (flush)
{
table.Flush();
}
}