From: "Arnd Bergmann" <arnd@arndb.de>
To: "Yeoreum Yun" <yeoreum.yun@arm.com>,
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Subject: Re: [RFC PATCH 02/34] ARM: mm: make 2-level pgd_t a scalar
Date: Wed, 15 Jul 2026 08:15:42 +0200 [thread overview]
Message-ID: <4a0f9161-961e-47f9-8672-9a06e52fefea@app.fastmail.com> (raw)
In-Reply-To: <20260713135614.1618183-3-yeoreum.yun@arm.com>
On Mon, Jul 13, 2026, at 15:55, Yeoreum Yun wrote:
> typedef pteval_t pte_t;
> typedef pmdval_t pmd_t;
> -typedef pmdval_t pgd_t[2];
> +typedef pgdval_t pgd_t;
> typedef pteval_t pgprot_t;
>
Just noticed one more issue here, I think this will break these
two macros that now access four entries instead of two:
#define copy_pmd(pmdpd,pmdps) \
do { \
pmdpd[0] = pmdps[0]; \
pmdpd[1] = pmdps[1]; \
flush_pmd_entry(pmdpd); \
} while (0)
#define pmd_clear(pmdp) \
do { \
pmdp[0] = __pmd(0); \
pmdp[1] = __pmd(0); \
clean_pmd_entry(pmdp); \
} while (0)
Arnd
next prev parent reply other threads:[~2026-07-15 6:17 UTC|newest]
Thread overview: 84+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-13 13:55 [RFC PATCH 00/34] mm: optimize unnecessary loads due to ptep_get() and friends out Yeoreum Yun
2026-07-13 13:55 ` [RFC PATCH 01/34] ARM: mm: make nommu pgd_t a scalar Yeoreum Yun
2026-07-13 13:55 ` [RFC PATCH 02/34] ARM: mm: make 2-level " Yeoreum Yun
2026-07-13 15:38 ` Arnd Bergmann
2026-07-13 16:04 ` David Hildenbrand (Arm)
2026-07-13 16:26 ` David Hildenbrand (Arm)
2026-07-14 10:26 ` Pedro Falcato
2026-07-14 10:54 ` David Hildenbrand (Arm)
2026-07-14 11:55 ` Arnd Bergmann
2026-07-14 13:34 ` David Laight
2026-07-14 15:06 ` Arnd Bergmann
2026-07-14 21:45 ` David Laight
2026-07-15 6:11 ` Arnd Bergmann
2026-07-16 19:04 ` Yeoreum Yun
2026-07-17 6:16 ` Arnd Bergmann
2026-07-17 7:55 ` Yeoreum Yun
2026-07-14 12:34 ` David Laight
2026-07-14 13:03 ` David Hildenbrand (Arm)
2026-07-15 6:15 ` Arnd Bergmann [this message]
2026-07-15 9:41 ` David Hildenbrand (Arm)
2026-07-16 10:56 ` Yeoreum Yun
2026-07-13 13:55 ` [RFC PATCH 03/34] ARM: mm: remove custom pgdp_get() Yeoreum Yun
2026-07-13 13:55 ` [RFC PATCH 04/34] LoongArch: mm: define pud_leaf() only when PUD exists Yeoreum Yun
2026-07-13 13:55 ` [RFC PATCH 05/34] MIPS: " Yeoreum Yun
2026-07-13 13:55 ` [RFC PATCH 06/34] mm/pgtable: define (pgd|p4d|pud)_leaf() for folded page tables Yeoreum Yun
2026-07-13 13:55 ` [RFC PATCH 07/34] mm/pgtable: define (pgd|p4d|pud)_offset_lockless() " Yeoreum Yun
2026-07-13 13:55 ` [RFC PATCH 08/34] loongarch: kvm: remove stack copy address of pXd in pXd_offset() Yeoreum Yun
2026-07-13 13:55 ` [RFC PATCH 09/34] riscv: " Yeoreum Yun
2026-07-13 13:55 ` [RFC PATCH 10/34] x86: mm: carve out the generic compile-time folded pgtable case in effective_prot() Yeoreum Yun
2026-07-13 14:19 ` Dave Hansen
2026-07-13 14:41 ` David Hildenbrand (Arm)
2026-07-13 14:55 ` Dave Hansen
2026-07-13 15:02 ` David Hildenbrand (Arm)
2026-07-13 17:57 ` Dave Hansen
2026-07-13 19:49 ` David Hildenbrand (Arm)
2026-07-13 20:27 ` Dave Hansen
2026-07-13 21:17 ` David Hildenbrand (Arm)
2026-07-13 21:40 ` Dave Hansen
2026-07-14 10:50 ` David Hildenbrand (Arm)
2026-07-14 11:40 ` Yeoreum Yun
2026-07-14 14:35 ` Dave Hansen
2026-07-14 16:08 ` Yeoreum Yun
2026-07-14 16:31 ` David Hildenbrand (Arm)
2026-07-14 18:28 ` Yeoreum Yun
2026-07-15 9:43 ` David Hildenbrand (Arm)
2026-07-14 16:51 ` Yeoreum Yun
2026-07-14 17:29 ` David Hildenbrand (Arm)
2026-07-14 17:58 ` Yeoreum Yun
2026-07-15 9:44 ` David Hildenbrand (Arm)
2026-07-16 8:47 ` Yeoreum Yun
2026-07-15 7:45 ` Geert Uytterhoeven
2026-07-15 9:41 ` Yeoreum Yun
2026-07-15 10:34 ` Geert Uytterhoeven
2026-07-16 7:49 ` Yeoreum Yun
2026-07-13 14:48 ` Yeoreum Yun
2026-07-13 13:55 ` [RFC PATCH 11/34] mm: vmscan: remove stack copy address of pud pass in wallk_pud_range() Yeoreum Yun
2026-07-15 13:44 ` Usama Anjum
2026-07-13 13:55 ` [RFC PATCH 12/34] arm64: mm: use proper set_pXd() for generic compile-time folded patable in kasan_early_init() Yeoreum Yun
2026-07-13 13:55 ` [RFC PATCH 13/34] arm64: mm: define pud_set_huge() when __PGTABLE_PMD_FOLDED not defined Yeoreum Yun
2026-07-13 13:55 ` [RFC PATCH 14/34] csky: mm: use proper set_pXd() for generic compile-time folded patable in vmalloc_fault() Yeoreum Yun
2026-07-13 13:55 ` [RFC PATCH 15/34] mips: mm: use proper set_pXd() for generic compile-time folded patable in vmalloc_fault path Yeoreum Yun
2026-07-13 13:55 ` [RFC PATCH 16/34] nios2: " Yeoreum Yun
2026-07-13 13:55 ` [RFC PATCH 17/34] riscv: mm: use proper set_pXd() for generic compile-time folded patable in vmalloc_fault() Yeoreum Yun
2026-07-13 13:55 ` [RFC PATCH 18/34] riscv: mm: use proper set_pXd() for generic compile-time folded patable in setup_vm_final() Yeoreum Yun
2026-07-13 13:55 ` [RFC PATCH 19/34] x86: power: use proper set_pXd() for generic compile-time folded patable in resume_one_md_table_init() Yeoreum Yun
2026-07-13 14:38 ` Dave Hansen
2026-07-13 14:59 ` David Hildenbrand (Arm)
2026-07-13 15:01 ` Yeoreum Yun
2026-07-13 13:55 ` [RFC PATCH 20/34] x86: kexec: use proper set_pXd() for generic compile-time folded patable in machine_kexec_page_table_set_one() Yeoreum Yun
2026-07-13 13:56 ` [RFC PATCH 21/34] x86: platform: use proper set_pXd() for generic compile-time folded patable in setup_olpc_ofw_pgd() Yeoreum Yun
2026-07-13 13:56 ` [RFC PATCH 22/34] x86: mm: use proper set_pXd() for generic compile-time folded patable in one_md_table_init() Yeoreum Yun
2026-07-13 13:56 ` [RFC PATCH 23/34] x86: mm: skip pud setup when using generic compile-time folded pagetable Yeoreum Yun
2026-07-13 13:56 ` [RFC PATCH 24/34] x86: mm: call try_to_free_pmd_page() when CONFIG_PGTABLE_LEVELS > 2 Yeoreum Yun
2026-07-13 13:56 ` [RFC PATCH 25/34] x86: mm: remove usage of pgd_page_vaddr() for CONFIG_x86_PAE Yeoreum Yun
2026-07-13 13:56 ` [RFC PATCH 26/34] x86: mm: define pudp_set_access_flags() when CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD is enabled only Yeoreum Yun
2026-07-13 13:56 ` [RFC PATCH 27/34] m68k: mm: remove usage of pgd_page_vaddr() for CONFIG_PGTABLE_LEVELS=3 Yeoreum Yun
2026-07-13 13:56 ` [RFC PATCH 28/34] arm: mm: use proper pgtable APIs for generic compile-time folded patable in kasan_init() Yeoreum Yun
2026-07-13 13:56 ` [RFC PATCH 29/34] mm/pgtable: disallow calling folded set_pgd/set_p4d/set_pud Yeoreum Yun
2026-07-13 13:56 ` [RFC PATCH 30/34] mm/pgtable: disallow calling folded (pgd|p4d|pud)_page, pgd_page_vaddr() and (p4d|pud)_pgtable Yeoreum Yun
2026-07-13 13:56 ` [RFC PATCH 31/34] mm/pgtable: optimize pmdp_get() and friends for folded pagetable levels Yeoreum Yun
2026-07-13 13:56 ` [RFC PATCH 32/34] openrisc/pgtable: drop __pmd_offset() Yeoreum Yun
2026-07-13 13:56 ` [RFC PATCH 33/34] mm/pgtable: catch abuse of folded dummy pgd_t/p4d_t/pud_t Yeoreum Yun
2026-07-13 13:56 ` [RFC PATCH 34/34] arm64: pgtable: convert pte_present() from macro to static inline Yeoreum Yun
2026-07-13 14:08 ` [RFC PATCH 00/34] mm: optimize unnecessary loads due to ptep_get() and friends out David Hildenbrand (Arm)
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