1// SPDX-License-Identifier: GPL-3.0-or-later
2
3#include "mos/mm/paging/dump.hpp"
4
5#include "mos/mm/paging/iterator.hpp"
6#include "mos/syslog/printk.hpp"
7#include "mos/tasks/task_types.hpp"
8
9static void pagetable_do_dump(ptr_t vaddr, ptr_t vaddr_end, VMFlags flags, pfn_t pfn, pfn_t pfn_end, ptr_t *prev_end_vaddr)
10{
11 if (vaddr - *prev_end_vaddr > MOS_PAGE_SIZE)
12 pr_info(" VGROUP: " PTR_FMT, vaddr);
13
14 pr_info2(" " PTR_RANGE " -> " PFN_RANGE ", %5zd pages, %pvf, %c%c, %s", //
15 vaddr, //
16 vaddr_end, //
17 pfn, //
18 pfn_end, //
19 (ALIGN_UP_TO_PAGE(vaddr_end) - vaddr) / MOS_PAGE_SIZE, //
20 (void *) &flags, //
21 flags & VM_CACHE_DISABLED ? 'C' : '-', //
22 flags & VM_GLOBAL ? 'G' : '-', //
23 flags & VM_USER ? "user" : "kernel" //
24 );
25
26 *prev_end_vaddr = vaddr_end;
27}
28
29void mm_dump_pagetable(MMContext *mmctx)
30{
31 pr_info("Page Table:");
32 ptr_t tmp = 0;
33 spinlock_acquire(&mmctx->mm_lock);
34
35 pagetable_iter_t iter = { .pgd.max.next.table: 0 };
36 pagetable_iter_init(it: &iter, pgd: mmctx->pgd, vaddr: 0, MOS_USER_END_VADDR);
37
38 pagetable_iter_range_t *range;
39 while ((range = pagetable_iter_next(it: &iter)))
40 if (range->present)
41 pagetable_do_dump(vaddr: range->vaddr, vaddr_end: range->vaddr_end, flags: range->flags, pfn: range->pfn, pfn_end: range->pfn_end, prev_end_vaddr: &tmp);
42
43 pagetable_iter_init(it: &iter, pgd: mmctx->pgd, MOS_KERNEL_START_VADDR, end: 0xffffffffffffffff);
44 while ((range = pagetable_iter_next(it: &iter)))
45 if (range->present)
46 pagetable_do_dump(vaddr: range->vaddr, vaddr_end: range->vaddr_end, flags: range->flags, pfn: range->pfn, pfn_end: range->pfn_end, prev_end_vaddr: &tmp);
47
48 spinlock_release(&mmctx->mm_lock);
49}
50
51void mm_dump_current_pagetable()
52{
53 const char *cpu_pagetable_source = current_cpu->mm_context == platform_info->kernel_mm ? "Kernel" : NULL;
54
55 if (current_thread)
56 {
57 pr_emph("Current task: thread %pt, process %pp", current_thread, current_process);
58 pr_emph("Task Page Table:");
59 mm_dump_pagetable(current_process->mm);
60 if (current_cpu->mm_context == current_process->mm)
61 cpu_pagetable_source = "Current Process";
62 }
63 else
64 {
65 pr_emph("Kernel Page Table:");
66 mm_dump_pagetable(mmctx: platform_info->kernel_mm);
67 }
68
69 if (cpu_pagetable_source)
70 {
71 pr_emph("CPU Page Table: %s", cpu_pagetable_source);
72 }
73 else
74 {
75 pr_emph("CPU Page Table:");
76 mm_dump_pagetable(current_cpu->mm_context);
77 }
78}
79
80MOS_PANIC_HOOK_FEAT(vmm, mm_dump_current_pagetable, "dump current pagetable");
81