From: Catalin Marinas <catalin.marinas@arm.com> To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 08/20] ARM: LPAE: MMU setup for the 3-level page table format Date: Sun, 14 Nov 2010 10:13:38 +0000 [thread overview] Message-ID: <AANLkTinnJZwiiuX4747WSmrjm7j9JhG_CGugqnK1jWEF@mail.gmail.com> (raw) In-Reply-To: <1289584840-18097-9-git-send-email-catalin.marinas@arm.com> On 12 November 2010 18:00, Catalin Marinas <catalin.marinas@arm.com> wrote: > This patch adds the MMU initialisation for the LPAE page table format. > The swapper_pg_dir size with LPAE is 5 rather than 4 pages. The > __v7_setup function configures the TTBRx split based on the PAGE_OFFSET > and sets the corresponding TTB control and MAIRx bits (similar to > PRRR/NMRR for TEX remapping). The 36-bit mappings (supersections) and > a few other memory types in mmu.c are conditionally compiled. [...] > --- a/arch/arm/kernel/head.S > +++ b/arch/arm/kernel/head.S > @@ -45,11 +46,20 @@ > #error KERNEL_RAM_VADDR must start at 0xXXXX8000 > #endif > > +#ifdef CONFIG_ARM_LPAE > + /* LPAE requires an additional page for the PGD */ > +#define PG_DIR_SIZE 0x5000 > +#define PTE_WORDS 3 > +#else > +#define PG_DIR_SIZE 0x4000 > +#define PTE_WORDS 2 > +#endif This should have been called PTE_ORDER, the PTE_WORDS naming is misleading. -- Catalin
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From: catalin.marinas@arm.com (Catalin Marinas) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 08/20] ARM: LPAE: MMU setup for the 3-level page table format Date: Sun, 14 Nov 2010 10:13:38 +0000 [thread overview] Message-ID: <AANLkTinnJZwiiuX4747WSmrjm7j9JhG_CGugqnK1jWEF@mail.gmail.com> (raw) In-Reply-To: <1289584840-18097-9-git-send-email-catalin.marinas@arm.com> On 12 November 2010 18:00, Catalin Marinas <catalin.marinas@arm.com> wrote: > This patch adds the MMU initialisation for the LPAE page table format. > The swapper_pg_dir size with LPAE is 5 rather than 4 pages. The > __v7_setup function configures the TTBRx split based on the PAGE_OFFSET > and sets the corresponding TTB control and MAIRx bits (similar to > PRRR/NMRR for TEX remapping). The 36-bit mappings (supersections) and > a few other memory types in mmu.c are conditionally compiled. [...] > --- a/arch/arm/kernel/head.S > +++ b/arch/arm/kernel/head.S > @@ -45,11 +46,20 @@ > ?#error KERNEL_RAM_VADDR must start at 0xXXXX8000 > ?#endif > > +#ifdef CONFIG_ARM_LPAE > + ? ? ? /* LPAE requires an additional page for the PGD */ > +#define PG_DIR_SIZE ? ?0x5000 > +#define PTE_WORDS ? ? ?3 > +#else > +#define PG_DIR_SIZE ? ?0x4000 > +#define PTE_WORDS ? ? ?2 > +#endif This should have been called PTE_ORDER, the PTE_WORDS naming is misleading. -- Catalin
next prev parent reply other threads:[~2010-11-14 10:13 UTC|newest] Thread overview: 154+ messages / expand[flat|nested] mbox.gz Atom feed top 2010-11-12 18:00 [PATCH v2 00/20] ARM: Add support for the Large Physical Address Extensions Catalin Marinas 2010-11-12 18:00 ` Catalin Marinas 2010-11-12 18:00 ` [PATCH v2 01/20] ARM: LPAE: Use PMD_(SHIFT|SIZE|MASK) instead of PGDIR_* Catalin Marinas 2010-11-12 18:00 ` Catalin Marinas 2010-11-22 12:43 ` Russell King - ARM Linux 2010-11-22 12:43 ` Russell King - ARM Linux 2010-11-22 13:00 ` Catalin Marinas 2010-11-22 13:00 ` Catalin Marinas 2010-11-22 13:28 ` Russell King - ARM Linux 2010-11-22 13:28 ` Russell King - ARM Linux 2010-11-12 18:00 ` [PATCH v2 02/20] ARM: LPAE: Factor out 2-level page table definitions into separate files Catalin Marinas 2010-11-12 18:00 ` Catalin Marinas 2010-11-15 23:31 ` Russell King - ARM Linux 2010-11-15 23:31 ` Russell King - ARM Linux 2010-11-16 9:14 ` Catalin Marinas 2010-11-16 9:14 ` Catalin Marinas 2010-11-16 9:59 ` Russell King - ARM Linux 2010-11-16 9:59 ` Russell King - ARM Linux 2010-11-16 10:02 ` Catalin Marinas 2010-11-16 10:02 ` Catalin Marinas 2010-11-16 10:04 ` Russell King - ARM Linux 2010-11-16 10:04 ` Russell King - ARM Linux 2010-11-16 10:11 ` Catalin Marinas 2010-11-16 10:11 ` Catalin Marinas 2010-11-12 18:00 ` [PATCH v2 03/20] ARM: LPAE: use u32 instead of unsigned long for 32-bit ptes Catalin Marinas 2010-11-12 18:00 ` Catalin Marinas 2010-11-14 13:19 ` Russell King - ARM Linux 2010-11-14 13:19 ` Russell King - ARM Linux 2010-11-14 14:09 ` Catalin Marinas 2010-11-14 14:09 ` Catalin Marinas 2010-11-14 14:13 ` Catalin Marinas 2010-11-14 14:13 ` Catalin Marinas 2010-11-14 15:14 ` Russell King - ARM Linux 2010-11-14 15:14 ` Russell King - ARM Linux 2010-11-15 9:39 ` Catalin Marinas 2010-11-15 9:39 ` Catalin Marinas 2010-11-15 9:47 ` Arnd Bergmann 2010-11-15 9:47 ` Arnd Bergmann 2010-11-15 9:51 ` Catalin Marinas 2010-11-15 9:51 ` Catalin Marinas 2010-11-15 22:11 ` Nicolas Pitre 2010-11-15 22:11 ` Nicolas Pitre 2010-11-15 23:35 ` Russell King - ARM Linux 2010-11-15 23:35 ` Russell King - ARM Linux 2010-11-16 9:19 ` Catalin Marinas 2010-11-16 9:19 ` Catalin Marinas 2010-11-15 22:07 ` Nicolas Pitre 2010-11-15 22:07 ` Nicolas Pitre 2010-11-15 17:36 ` Russell King - ARM Linux 2010-11-15 17:36 ` Russell King - ARM Linux 2010-11-15 17:39 ` Catalin Marinas 2010-11-15 17:39 ` Catalin Marinas 2010-11-16 19:34 ` Catalin Marinas 2010-11-16 19:34 ` Catalin Marinas 2010-11-12 18:00 ` [PATCH v2 04/20] ARM: LPAE: Do not assume Linux PTEs are always at PTRS_PER_PTE offset Catalin Marinas 2010-11-12 18:00 ` Catalin Marinas 2010-11-15 17:42 ` Russell King - ARM Linux 2010-11-15 17:42 ` Russell King - ARM Linux 2010-11-15 21:46 ` Catalin Marinas 2010-11-15 21:46 ` Catalin Marinas 2010-11-12 18:00 ` [PATCH v2 05/20] ARM: LPAE: Introduce L_PTE_NOEXEC and L_PTE_NOWRITE Catalin Marinas 2010-11-12 18:00 ` Catalin Marinas 2010-11-15 18:30 ` Russell King - ARM Linux 2010-11-15 18:30 ` Russell King - ARM Linux 2010-11-16 10:07 ` Catalin Marinas 2010-11-16 10:07 ` Catalin Marinas 2010-11-16 15:18 ` Catalin Marinas 2010-11-16 15:18 ` Catalin Marinas 2010-11-16 15:32 ` Catalin Marinas 2010-11-16 15:32 ` Catalin Marinas 2010-11-16 18:19 ` Russell King - ARM Linux 2010-11-16 18:19 ` Russell King - ARM Linux 2010-11-17 17:02 ` Catalin Marinas 2010-11-17 17:02 ` Catalin Marinas 2010-11-17 17:16 ` Russell King - ARM Linux 2010-11-17 17:16 ` Russell King - ARM Linux 2010-11-17 17:22 ` Catalin Marinas 2010-11-17 17:22 ` Catalin Marinas 2010-11-17 17:24 ` Russell King - ARM Linux 2010-11-17 17:24 ` Russell King - ARM Linux 2010-11-17 17:30 ` Catalin Marinas 2010-11-17 17:30 ` Catalin Marinas 2010-11-17 17:32 ` Russell King - ARM Linux 2010-11-17 17:32 ` Russell King - ARM Linux 2010-11-17 17:34 ` Catalin Marinas 2010-11-17 17:34 ` Catalin Marinas 2010-11-12 18:00 ` [PATCH v2 06/20] ARM: LPAE: Introduce the 3-level page table format definitions Catalin Marinas 2010-11-12 18:00 ` Catalin Marinas 2010-11-15 18:34 ` Russell King - ARM Linux 2010-11-15 18:34 ` Russell King - ARM Linux 2010-11-16 9:57 ` Catalin Marinas 2010-11-16 9:57 ` Catalin Marinas 2010-11-12 18:00 ` [PATCH v2 07/20] ARM: LPAE: Page table maintenance for the 3-level format Catalin Marinas 2010-11-12 18:00 ` Catalin Marinas 2010-11-22 12:58 ` Russell King - ARM Linux 2010-11-22 12:58 ` Russell King - ARM Linux 2010-11-12 18:00 ` [PATCH v2 08/20] ARM: LPAE: MMU setup for the 3-level page table format Catalin Marinas 2010-11-12 18:00 ` Catalin Marinas 2010-11-14 10:13 ` Catalin Marinas [this message] 2010-11-14 10:13 ` Catalin Marinas 2010-11-22 13:10 ` Russell King - ARM Linux 2010-11-22 13:10 ` Russell King - ARM Linux 2010-11-23 11:38 ` Catalin Marinas 2010-11-23 11:38 ` Catalin Marinas 2010-11-23 17:33 ` Russell King - ARM Linux 2010-11-23 17:33 ` Russell King - ARM Linux 2010-11-23 17:35 ` Catalin Marinas 2010-11-23 17:35 ` Catalin Marinas 2010-11-12 18:00 ` [PATCH v2 09/20] ARM: LPAE: Change setup_mm_for_reboot() to work with LPAE Catalin Marinas 2010-11-12 18:00 ` Catalin Marinas 2010-11-22 13:11 ` Russell King - ARM Linux 2010-11-22 13:11 ` Russell King - ARM Linux 2010-11-12 18:00 ` [PATCH v2 10/20] ARM: LPAE: Remove the FIRST_USER_PGD_NR and USER_PTRS_PER_PGD definitions Catalin Marinas 2010-11-12 18:00 ` Catalin Marinas 2010-11-22 13:11 ` Russell King - ARM Linux 2010-11-22 13:11 ` Russell King - ARM Linux 2010-11-12 18:00 ` [PATCH v2 11/20] ARM: LPAE: Add fault handling support Catalin Marinas 2010-11-12 18:00 ` Catalin Marinas 2010-11-22 13:15 ` Russell King - ARM Linux 2010-11-22 13:15 ` Russell King - ARM Linux 2010-11-22 13:19 ` Catalin Marinas 2010-11-22 13:19 ` Catalin Marinas 2010-11-22 13:32 ` Russell King - ARM Linux 2010-11-22 13:32 ` Russell King - ARM Linux 2010-11-22 13:38 ` Catalin Marinas 2010-11-22 13:38 ` Catalin Marinas 2010-11-12 18:00 ` [PATCH v2 12/20] ARM: LPAE: Add context switching support Catalin Marinas 2010-11-12 18:00 ` Catalin Marinas 2010-11-12 18:00 ` [PATCH v2 13/20] ARM: LPAE: Add SMP support for the 3-level page table format Catalin Marinas 2010-11-12 18:00 ` Catalin Marinas 2010-11-22 13:37 ` Russell King - ARM Linux 2010-11-22 13:37 ` Russell King - ARM Linux 2010-11-12 18:00 ` [PATCH v2 14/20] ARM: LPAE: use phys_addr_t instead of unsigned long for physical addresses Catalin Marinas 2010-11-12 18:00 ` Catalin Marinas 2010-11-12 18:00 ` [PATCH v2 15/20] ARM: LPAE: Use generic dma_addr_t type definition Catalin Marinas 2010-11-12 18:00 ` Catalin Marinas 2010-11-12 18:00 ` [PATCH v2 16/20] ARM: LPAE: mark memory banks with start > ULONG_MAX as highmem Catalin Marinas 2010-11-12 18:00 ` Catalin Marinas 2010-11-12 18:00 ` [PATCH v2 17/20] ARM: LPAE: use phys_addr_t for physical start address in early_mem Catalin Marinas 2010-11-12 18:00 ` Catalin Marinas 2010-11-12 18:00 ` [PATCH v2 18/20] ARM: LPAE: add support for ATAG_MEM64 Catalin Marinas 2010-11-12 18:00 ` Catalin Marinas 2010-11-12 18:00 ` [PATCH v2 19/20] ARM: LPAE: define printk format for physical addresses and page table entries Catalin Marinas 2010-11-12 18:00 ` Catalin Marinas 2010-11-22 13:43 ` Russell King - ARM Linux 2010-11-22 13:43 ` Russell King - ARM Linux 2010-11-22 13:49 ` Catalin Marinas 2010-11-22 13:49 ` Catalin Marinas 2010-11-12 18:00 ` [PATCH v2 20/20] ARM: LPAE: Add the Kconfig entries Catalin Marinas 2010-11-12 18:00 ` Catalin Marinas 2010-11-13 12:38 ` Sergei Shtylyov 2010-11-13 12:38 ` Sergei Shtylyov 2010-11-14 10:11 ` Catalin Marinas 2010-11-14 10:11 ` Catalin Marinas
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