From: Geert Uytterhoeven <geert@linux-m68k.org>
To: Peter Zijlstra <peterz@infradead.org>
Cc: linux-m68k <linux-m68k@lists.linux-m68k.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Will Deacon <will@kernel.org>,
Michael Schmitz <schmitzmic@gmail.com>,
Greg Ungerer <gerg@linux-m68k.org>
Subject: Re: [PATCH -v2 09/10] m68k,mm: Fully initialize the page-table allocator
Date: Fri, 7 Feb 2020 11:58:42 +0100 [thread overview]
Message-ID: <CAMuHMdUxwz4X+SYCCWCMNAw2nNTMUXWPWrxJ+X9mYC_tirvN=A@mail.gmail.com> (raw)
In-Reply-To: <20200131125403.938797587@infradead.org>
Hoi Peter,
Thanks for your patch!
On Fri, Jan 31, 2020 at 1:56 PM Peter Zijlstra <peterz@infradead.org> wrote:
> Also iterate the PMD tables to populate the PTE table allocator. This
> also fully replaces the previous zero_pgtable hack.
As no code is being removed in this patch, does this mean this case was
broken since "[PATCH 06/10] m68k,mm: Improve kernel_page_table()"?
> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
> ---
> arch/m68k/mm/init.c | 13 ++++++++++++-
> 1 file changed, 12 insertions(+), 1 deletion(-)
>
> --- a/arch/m68k/mm/init.c
> +++ b/arch/m68k/mm/init.c
> @@ -120,7 +120,7 @@ void free_initmem(void)
> static inline void init_pointer_tables(void)
> {
> #if defined(CONFIG_MMU) && !defined(CONFIG_SUN3) && !defined(CONFIG_COLDFIRE)
> - int i;
> + int i, j;
>
> /* insert pointer tables allocated so far into the tablelist */
> init_pointer_table(kernel_pg_dir, TABLE_PGD);
> @@ -133,6 +133,17 @@ static inline void init_pointer_tables(v
>
> pmd_dir = (pmd_t *)pgd_page_vaddr(kernel_pg_dir[i]);
> init_pointer_table(pmd_dir, TABLE_PMD);
> +
> + for (j = 0; j < PTRS_PER_PMD; j++) {
> + pmd_t *pmd = &pmd_dir[j];
> + pte_t *pte_dir;
> +
> + if (!pmd_present(*pmd))
> + continue;
> +
> + pte_dir = (pte_t *)__pmd_page(*pmd);
> + init_pointer_table(pte_dir, TABLE_PTE);
> + }
> }
> #endif
> }
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
next prev parent reply other threads:[~2020-02-07 10:58 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-31 12:45 [PATCH -v2 00/10] Rewrite Motorola MMU page-table layout Peter Zijlstra
2020-01-31 12:45 ` [PATCH -v2 01/10] m68k,mm: Remove stray nocache in ColdFire pgalloc Peter Zijlstra
2020-01-31 12:45 ` [PATCH -v2 02/10] m68k,mm: Fix ColdFire pgd_alloc() Peter Zijlstra
2020-01-31 12:45 ` [PATCH -v2 03/10] m68k,mm: Unify Motorola MMU page setup Peter Zijlstra
2020-01-31 12:45 ` [PATCH -v2 04/10] m68k,mm: Move the pointer table allocator to motorola.c Peter Zijlstra
2020-01-31 12:45 ` [PATCH -v2 05/10] m68k,mm: Restructure Motorola MMU page-table layout Peter Zijlstra
2020-01-31 12:45 ` [PATCH -v2 06/10] m68k,mm: Improve kernel_page_table() Peter Zijlstra
2020-01-31 12:45 ` [PATCH -v2 07/10] m68k,mm: Use table allocator for pgtables Peter Zijlstra
2020-01-31 12:45 ` [PATCH -v2 08/10] m68k,mm: Extend table allocator for multiple sizes Peter Zijlstra
2020-02-07 10:56 ` Geert Uytterhoeven
2020-02-07 11:34 ` Peter Zijlstra
2020-02-07 12:11 ` Geert Uytterhoeven
2020-02-07 12:30 ` Checkpatch being daft, Was: " Peter Zijlstra
2020-02-07 12:33 ` Peter Zijlstra
2020-02-09 18:24 ` Joe Perches
2020-02-10 16:38 ` Peter Zijlstra
2020-02-10 17:12 ` Joe Perches
2020-02-07 12:57 ` Joe Perches
2020-01-31 12:45 ` [PATCH -v2 09/10] m68k,mm: Fully initialize the page-table allocator Peter Zijlstra
2020-02-07 10:58 ` Geert Uytterhoeven [this message]
2020-02-07 11:37 ` Peter Zijlstra
2020-01-31 12:45 ` [PATCH -v2 10/10] m68k,mm: Change ColdFire pgtable_t Peter Zijlstra
2020-01-31 13:19 ` [PATCH -v2 00/10] Rewrite Motorola MMU page-table layout Greg Ungerer
2020-02-03 1:20 ` Greg Ungerer
2020-02-01 8:07 ` Michael Schmitz
2020-02-03 9:50 ` Will Deacon
2020-02-10 11:16 ` Geert Uytterhoeven
2020-03-09 10:15 ` Geert Uytterhoeven
2020-03-09 11:46 ` Peter Zijlstra
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