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new: 初步完成了mmio地址空间自动分配（未测试）

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bugfix: mmio虚拟地址分配的bug
This commit is contained in:
fslongjin
2022-08-20 01:05:15 +08:00
parent 05477932de
commit 0223232f3f
14 changed files with 317 additions and 56 deletions
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14
kernel/process/process.c
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@ -22,6 +22,8 @@
#include <ktest/ktest.h>
#include <mm/mmio.h>
// #pragma GCC push_options
// #pragma GCC optimize("O0")
@ -921,7 +923,7 @@ uint64_t process_copy_mm(uint64_t clone_flags, struct process_control_block *pcb
struct vm_area_struct *vma = current_pcb->mm->vmas;
while (vma != NULL)
{
if (vma->vm_end > USER_MAX_LINEAR_ADDR)
if (vma->vm_end > USER_MAX_LINEAR_ADDR || vma->vm_flags & VM_DONTCOPY)
{
vma = vma->vm_next;
continue;
@ -997,19 +999,19 @@ uint64_t process_exit_mm(struct process_control_block *pcb)
struct vm_area_struct *vma = pcb->mm->vmas;
while (vma != NULL)
{
struct vm_area_struct *cur_vma = vma;
vma = cur_vma->vm_next;
uint64_t pa;
mm_umap_vma(pcb->mm, cur_vma, &pa);
// kdebug("vm start=%#018lx, sem=%d", cur_vma->vm_start, cur_vma->anon_vma->sem.counter);
mm_unmap_vma(pcb->mm, cur_vma, &pa);
uint64_t size = (cur_vma->vm_end - cur_vma->vm_start);
// 释放内存
switch (size)
{
case PAGE_2M_SIZE:
free_pages(Phy_to_2M_Page(pa), 1);
break;
case PAGE_4K_SIZE:
kfree(phys_2_virt(pa));
break;
@ -1017,7 +1019,7 @@ uint64_t process_exit_mm(struct process_control_block *pcb)
break;
}
vm_area_del(cur_vma);
kfree(cur_vma);
vm_area_free(cur_vma);
}
// 释放顶层页表