Re: [PATCH V2 0/8] arm64/mm: Drop PXD_TABLE_BIT

From: Catalin Marinas
Date: Wed Mar 12 2025 - 14:09:30 EST


On Fri, 21 Feb 2025 10:12:19 +0530, Anshuman Khandual wrote:
> Remove the PXX_TABLE_BIT definitions and instead rely on PXX_TYPE_MASK,
> PXX_TYPE_SECT and PXX_TYPE_TABLE. The latter versions are more abstract
> and also include the PTE_VALID bit.
>
> This abstraction is valuable for the impending D128 page table support,
> which doesn't have a single page table bit to determine table vs block.
> Instead it has the skip level (SKL) field, where it will consider 0 to
> mean table and any other value to mean a block entry. So PXX_TABLE_BIT
> therefore doesn't fit into the D128 model well, but the type fields do.
>
> [...]

Applied to arm64 (for-next/drop-pxd_table_bit), thanks!

[1/8] KVM: arm64: ptdump: Test PMD_TYPE_MASK for block mapping
https://git.kernel.org/arm64/c/0b626b245c57
[2/8] arm64/ptdump: Test PMD_TYPE_MASK for block mapping
https://git.kernel.org/arm64/c/f5e93819e2cc
[3/8] arm64/mm: Clear PXX_TYPE_MASK in mk_[pmd|pud]_sect_prot()
https://git.kernel.org/arm64/c/dba954801004
[4/8] arm64/mm: Clear PXX_TYPE_MASK and set PXD_TYPE_SECT in [pmd|pud]_mkhuge()
https://git.kernel.org/arm64/c/1601df9e366e
[5/8] arm64/mm: Check PXD_TYPE_TABLE in [p4d|pgd]_bad()
https://git.kernel.org/arm64/c/4fa8a9c0fc99
[6/8] arm64/mm: Check PUD_TYPE_TABLE in pud_bad()
https://git.kernel.org/arm64/c/bfb1d2b9021c
[7/8] arm64/mm: Check pmd_table() in pmd_trans_huge()
https://git.kernel.org/arm64/c/d1770e909898
[8/8] arm64/mm: Drop PXD_TABLE_BIT
https://git.kernel.org/arm64/c/50c2726654bb

--
Catalin