From: cyril@ti.com (Cyril Chemparathy)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 RESEND 10/17] ARM: LPAE: use phys_addr_t in switch_mm()
Date: Mon, 24 Sep 2012 10:32:48 -0400 [thread overview]
Message-ID: <50606F10.60204@ti.com> (raw)
In-Reply-To: <20120924140515.GF23298@arm.com>
On 09/24/12 10:05, Catalin Marinas wrote:
> On Fri, Sep 21, 2012 at 04:56:08PM +0100, Cyril Chemparathy wrote:
>> This patch modifies the switch_mm() processor functions to use phys_addr_t.
>> On LPAE systems, we now honor the upper 32-bits of the physical address that
>> is being passed in, and program these into TTBR as expected.
>>
>> Signed-off-by: Cyril Chemparathy <cyril@ti.com>
>> Signed-off-by: Vitaly Andrianov <vitalya@ti.com>
>> ---
[...]
>> diff --git a/arch/arm/mm/proc-v7-3level.S b/arch/arm/mm/proc-v7-3level.S
>> index 8de0f1d..c4f4251 100644
>> --- a/arch/arm/mm/proc-v7-3level.S
>> +++ b/arch/arm/mm/proc-v7-3level.S
[...]
>> ENTRY(cpu_v7_switch_mm)
>> #ifdef CONFIG_MMU
>> - ldr r1, [r1, #MM_CONTEXT_ID] @ get mm->context.id
>> - and r3, r1, #0xff
>> - mov r3, r3, lsl #(48 - 32) @ ASID
>> - mcrr p15, 0, r0, r3, c2 @ set TTB 0
>> + ldr r2, [r2, #MM_CONTEXT_ID] @ get mm->context.id
>> + and r2, r2, #0xff
>> + mov r2, r2, lsl #(48 - 32) @ ASID
>> + orr rpgdh, rpgdh, r2 @ upper 32-bits of pgd phys
>
> Can you do:
>
> orr rpgdh, rpgdh, r2, lsl #(48 - 32)
>
Sure. Thanks.
-- Cyril.
next prev parent reply other threads:[~2012-09-24 14:32 UTC|newest]
Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-21 15:55 [PATCH v3 RESEND 00/17] LPAE fixes and extensions for Keystone Cyril Chemparathy
2012-09-21 15:55 ` [PATCH v3 RESEND 01/17] ARM: add mechanism for late code patching Cyril Chemparathy
2012-09-22 15:10 ` Nicolas Pitre
2012-09-22 21:41 ` Cyril Chemparathy
2012-09-24 12:06 ` Dave Martin
2012-09-24 14:49 ` Cyril Chemparathy
2012-09-24 15:54 ` Dave Martin
2012-09-21 15:56 ` [PATCH v3 RESEND 02/17] ARM: add self test for runtime patch mechanism Cyril Chemparathy
2012-09-21 15:56 ` [PATCH v3 RESEND 03/17] ARM: use late patch framework for phys-virt patching Cyril Chemparathy
2012-09-21 15:56 ` [PATCH v3 RESEND 04/17] ARM: LPAE: use phys_addr_t on virt <--> phys conversion Cyril Chemparathy
2012-09-24 13:09 ` Catalin Marinas
2012-09-24 13:57 ` Cyril Chemparathy
2012-09-21 15:56 ` [PATCH v3 RESEND 05/17] ARM: LPAE: support 64-bit virt_to_phys patching Cyril Chemparathy
2012-09-22 15:24 ` Nicolas Pitre
2012-09-24 15:13 ` Catalin Marinas
2012-09-24 15:56 ` Nicolas Pitre
2012-09-24 20:59 ` Cyril Chemparathy
2012-09-24 21:20 ` Nicolas Pitre
2012-09-24 21:52 ` Catalin Marinas
2012-09-24 22:32 ` Nicolas Pitre
2012-09-24 22:40 ` Russell King - ARM Linux
2012-09-24 22:53 ` Cyril Chemparathy
2012-09-24 23:03 ` Nicolas Pitre
2012-09-24 23:08 ` Russell King - ARM Linux
2012-09-24 22:55 ` Nicolas Pitre
2012-09-25 12:55 ` Dave Martin
2012-09-25 13:53 ` Catalin Marinas
2012-09-24 21:53 ` Cyril Chemparathy
2012-09-24 22:06 ` Russell King - ARM Linux
2012-09-24 16:31 ` Dave Martin
2012-09-24 16:51 ` Nicolas Pitre
2012-09-21 15:56 ` [PATCH v3 RESEND 06/17] ARM: LPAE: use signed arithmetic for mask definitions Cyril Chemparathy
2012-09-24 13:09 ` Catalin Marinas
2012-09-24 13:54 ` Russell King - ARM Linux
2012-09-21 15:56 ` [PATCH v3 RESEND 07/17] ARM: LPAE: use phys_addr_t in alloc_init_pud() Cyril Chemparathy
2012-09-24 13:10 ` Catalin Marinas
2012-09-21 15:56 ` [PATCH v3 RESEND 08/17] ARM: LPAE: use phys_addr_t in free_memmap() Cyril Chemparathy
2012-09-24 13:29 ` Catalin Marinas
2012-09-24 13:41 ` Russell King - ARM Linux
2012-09-24 15:09 ` Cyril Chemparathy
2012-09-24 15:22 ` Russell King - ARM Linux
2012-09-24 16:41 ` Cyril Chemparathy
2012-09-24 16:51 ` Catalin Marinas
2012-09-24 17:06 ` Cyril Chemparathy
2012-09-24 17:14 ` Russell King - ARM Linux
2012-09-25 13:08 ` Catalin Marinas
2012-09-25 13:30 ` Russell King - ARM Linux
2012-09-24 16:55 ` Russell King - ARM Linux
2012-09-24 17:03 ` Catalin Marinas
2012-09-21 15:56 ` [PATCH v3 RESEND 09/17] ARM: LPAE: use phys_addr_t for initrd location and size Cyril Chemparathy
2012-09-24 13:30 ` Catalin Marinas
2012-09-24 13:38 ` Russell King - ARM Linux
2012-09-24 14:00 ` Cyril Chemparathy
2012-09-21 15:56 ` [PATCH v3 RESEND 10/17] ARM: LPAE: use phys_addr_t in switch_mm() Cyril Chemparathy
2012-09-24 14:05 ` Catalin Marinas
2012-09-24 14:32 ` Cyril Chemparathy [this message]
2012-09-21 15:56 ` [PATCH v3 RESEND 11/17] ARM: LPAE: use 64-bit accessors for TTBR registers Cyril Chemparathy
2012-09-24 14:10 ` Catalin Marinas
2012-09-21 15:56 ` [PATCH v3 RESEND 12/17] ARM: LPAE: define ARCH_LOW_ADDRESS_LIMIT for bootmem Cyril Chemparathy
2012-09-24 14:16 ` Catalin Marinas
2012-09-21 15:56 ` [PATCH v3 RESEND 13/17] ARM: LPAE: factor out T1SZ and TTBR1 computations Cyril Chemparathy
2012-09-24 14:45 ` Catalin Marinas
2012-09-24 14:58 ` Cyril Chemparathy
2012-09-21 15:56 ` [PATCH v3 RESEND 14/17] ARM: LPAE: accomodate >32-bit addresses for page table base Cyril Chemparathy
2012-09-24 15:17 ` Catalin Marinas
2012-09-21 15:56 ` [PATCH v3 RESEND 15/17] ARM: mm: use physical addresses in highmem sanity checks Cyril Chemparathy
2012-09-24 15:18 ` Catalin Marinas
2012-09-21 15:56 ` [PATCH v3 RESEND 16/17] ARM: mm: cleanup checks for membank overlap with vmalloc area Cyril Chemparathy
2012-09-21 15:56 ` [PATCH v3 RESEND 17/17] ARM: mm: clean up membank size limit checks Cyril Chemparathy
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