+void arch_check_zapped_pud(struct vm_area_struct *vma, pud_t pud)
+{
+ /* See note in arch_check_zapped_pte() */
+ VM_WARN_ON_ONCE(!(vma->vm_flags & VM_SHADOW_STACK) &&
+ pud_shstk(pud));
Please get rid of the line break. You have 100 characters.
Coding-style
On Thu, Aug 08, 2024 at 12:28:47AM +0200, Thomas Gleixner wrote:
> On Wed, Aug 07 2024 at 15:48, Peter Xu wrote:
>
> > Subject: mm/x86: arch_check_zapped_pud()
>
> Is not a proper subject line. It clearly lacks a verb.
>
> Subject: mm/x86: Implement arch_check_zapped_pud()
>
>
> > Introduce
On Wed, Aug 07 2024 at 15:48, Peter Xu wrote:
> Subject: mm/x86: arch_check_zapped_pud()
Is not a proper subject line. It clearly lacks a verb.
Subject: mm/x86: Implement arch_check_zapped_pud()
> Introduce arch_check_zapped_pud() to sanity check shadow stack on PUD zaps.
> It has the same l
Introduce arch_check_zapped_pud() to sanity check shadow stack on PUD zaps.
It has the same logic of the PMD helper.
One thing to mention is, it might be a good idea to use page_table_check in
the future for trapping wrong setups of shadow stack pgtable entries [1].
That is left for the future as
