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From: Catalin Marinas <catalin.marinas@arm.com>
To: Russell King - ARM Linux <linux@arm.linux.org.uk>
Cc: linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, Nick Piggin <npiggin@gmail.com>
Subject: Re: [PATCH v4 08/19] ARM: LPAE: Introduce the 3-level page table format definitions
Date: Mon, 21 Mar 2011 13:19:07 +0000	[thread overview]
Message-ID: <AANLkTimZ+b_yNf1-72AGUMcPbFRFuHVPtvf24VigRWK-@mail.gmail.com> (raw)
In-Reply-To: <20110321125606.GC22222@n2100.arm.linux.org.uk>

On 21 March 2011 12:56, Russell King - ARM Linux <linux@arm.linux.org.uk> wrote:
> On Mon, Mar 21, 2011 at 12:36:55PM +0000, Catalin Marinas wrote:
>> Any plans for the nopmd patches? I haven't seen them in -next or on the list.
>
> I dropped them again because of those pesky warnings, so again I'm not
> planning to push them this window as I don't wish to be deluged in
> people reporting the warnings.
>
> They really need fixing once we know how the LPAE stuff interacts with
> the change.  At the moment I've no idea whether the existing section
> support ends up at pgd or pmd level with LPAE.

With LPAE, the section should be at the pmd level (2nd level page
table) as the PGDIR_SHIFT is 30. But if we standardise on using the
pmd in both cases, macros like pmd_val() would expand to the right
level with classic page tables (it goes up to pgd_val).

PMD_SHIFT also gets defined as PGDIR_SHIFT for the classic page
tables. One of my patches in the series converts the existing code to
PMD_SHIFT from PGDIR_SHIFT.

I'm happy to give this a try if you have some existing patches for the
classic page tables (I can even start from scratch but I don't want to
duplicate work).

-- 
Catalin

  reply	other threads:[~2011-03-21 13:19 UTC|newest]

Thread overview: 59+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-01-24 17:55 [PATCH v4 00/19] ARM: Add support for the Large Physical Address Extensions Catalin Marinas
2011-01-24 17:55 ` [PATCH v4 01/19] ARM: Make the argument to virt_to_phys() "const volatile" Catalin Marinas
2011-01-24 19:19   ` Stephen Boyd
2011-01-24 23:38     ` Russell King - ARM Linux
2011-01-25 10:00     ` Arnd Bergmann
2011-01-25 10:29       ` Russell King - ARM Linux
2011-01-25 14:14         ` Arnd Bergmann
2011-01-24 17:55 ` [PATCH v4 02/19] ARM: LPAE: Fix early_pte_alloc() assumption about the Linux PTE Catalin Marinas
2011-02-12  9:56   ` Russell King - ARM Linux
2011-01-24 17:55 ` [PATCH v4 03/19] ARM: LPAE: use long long format when printing physical addresses and ptes Catalin Marinas
2011-02-12  9:59   ` Russell King - ARM Linux
2011-01-24 17:55 ` [PATCH v4 04/19] ARM: LPAE: Use PMD_(SHIFT|SIZE|MASK) instead of PGDIR_* Catalin Marinas
2011-01-24 17:55 ` [PATCH v4 05/19] ARM: LPAE: Factor out 2-level page table definitions into separate files Catalin Marinas
2011-01-24 17:55 ` [PATCH v4 06/19] ARM: LPAE: Add (pte|pmd|pgd|pgprot)val_t type definitions as u32 Catalin Marinas
2011-02-03 17:13   ` Catalin Marinas
2011-01-24 17:55 ` [PATCH v4 07/19] ARM: LPAE: Use a mask for physical addresses in page table entries Catalin Marinas
2011-01-24 17:55 ` [PATCH v4 08/19] ARM: LPAE: Introduce the 3-level page table format definitions Catalin Marinas
2011-01-24 21:26   ` Nick Piggin
2011-01-24 21:42     ` Russell King - ARM Linux
2011-01-25 10:04       ` Catalin Marinas
2011-03-21 12:36       ` Catalin Marinas
2011-03-21 12:56         ` Russell King - ARM Linux
2011-03-21 13:19           ` Catalin Marinas [this message]
2011-02-03 17:11   ` Catalin Marinas
2011-01-24 17:55 ` [PATCH v4 09/19] ARM: LPAE: Page table maintenance for the 3-level format Catalin Marinas
2011-02-03 17:09   ` Catalin Marinas
2011-02-03 17:56   ` Russell King - ARM Linux
2011-02-03 22:00     ` Catalin Marinas
2011-01-24 17:55 ` [PATCH v4 10/19] ARM: LPAE: MMU setup for the 3-level page table format Catalin Marinas
2011-01-24 17:55 ` [PATCH v4 11/19] ARM: LPAE: Add fault handling support Catalin Marinas
2011-01-24 17:55 ` [PATCH v4 12/19] ARM: LPAE: Add context switching support Catalin Marinas
2011-02-12 10:44   ` Russell King - ARM Linux
2011-02-14 13:24     ` Catalin Marinas
2011-02-19 18:30       ` Russell King - ARM Linux
2011-02-19 23:16         ` Catalin Marinas
2011-01-24 17:55 ` [PATCH v4 13/19] ARM: LPAE: Add identity mapping support for the 3-level page table format Catalin Marinas
2011-01-24 17:55 ` [PATCH v4 14/19] ARM: LPAE: Add SMP " Catalin Marinas
2011-01-24 17:55 ` [PATCH v4 15/19] ARM: LPAE: use phys_addr_t instead of unsigned long for physical addresses Catalin Marinas
2011-02-12 10:28   ` Russell King - ARM Linux
2011-02-15 11:52     ` Will Deacon
2011-02-15 12:35       ` Russell King - ARM Linux
2011-02-15 12:39         ` Catalin Marinas
2011-02-15 13:37           ` Will Deacon
2011-02-15 14:23             ` Russell King - ARM Linux
2011-02-15 15:26               ` Will Deacon
2011-02-15 15:48                 ` Russell King - ARM Linux
2011-02-19 18:26   ` Russell King - ARM Linux
2011-02-21 14:36     ` Will Deacon
2011-02-21 14:58       ` Russell King - ARM Linux
2011-02-21 15:01         ` Will Deacon
2011-01-24 17:55 ` [PATCH v4 16/19] ARM: LPAE: Use generic dma_addr_t type definition Catalin Marinas
2011-02-12 10:34   ` Russell King - ARM Linux
2011-02-14 13:01     ` Catalin Marinas
2011-02-15 14:27       ` Russell King - ARM Linux
2011-02-15 15:24         ` Catalin Marinas
2011-01-24 17:55 ` [PATCH v4 17/19] ARM: LPAE: mark memory banks with start > ULONG_MAX as highmem Catalin Marinas
2011-02-12 10:36   ` Russell King - ARM Linux
2011-01-24 17:56 ` [PATCH v4 18/19] ARM: LPAE: add support for ATAG_MEM64 Catalin Marinas
2011-01-24 17:56 ` [PATCH v4 19/19] ARM: LPAE: Add the Kconfig entries Catalin Marinas

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