[PATCH v4 04/15] mm: pgtable: add statistics for P4D level page table

[Kevin Brodsky]

On 30/12/2024 10:07, Qi Zheng wrote:
> diff --git a/arch/riscv/include/asm/pgalloc.h b/arch/riscv/include/asm/pgalloc.h
> index 551d614d3369c..3466fbe2e508d 100644
> --- a/arch/riscv/include/asm/pgalloc.h
> +++ b/arch/riscv/include/asm/pgalloc.h
> @@ -108,8 +108,12 @@ static inline void __pud_free_tlb(struct mmu_gather *tlb, pud_t *pud,
>  static inline void __p4d_free_tlb(struct mmu_gather *tlb, p4d_t *p4d,
>  				  unsigned long addr)
>  {
> -	if (pgtable_l5_enabled)
> +	if (pgtable_l5_enabled) {
> +		struct ptdesc *ptdesc = virt_to_ptdesc(p4d);
> +
> +		pagetable_p4d_dtor(ptdesc);
>  		riscv_tlb_remove_ptdesc(tlb, virt_to_ptdesc(p4d));

Nit: could use the new ptdesc variable here instead of calling
virt_to_ptdesc().

- Kevin