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SubjectRe: [PATCH 03/22] ARM: LPAE: use phys_addr_t on virt <--> phys conversion
On 8/4/2012 2:24 AM, Nicolas Pitre wrote:
> On Tue, 31 Jul 2012, Cyril Chemparathy wrote:
>
>> This patch fixes up the types used when converting back and forth between
>> physical and virtual addresses.
>>
>> Signed-off-by: Vitaly Andrianov <vitalya@ti.com>
>> Signed-off-by: Cyril Chemparathy <cyril@ti.com>
>
> Did you verify that this didn't introduce any compilation warning when
> compiling for non LPAE? If so and there were no warnings then...
>

Yes. This series has been tested on vanilla ARMv7 Cortex-A8 non-LPAE
hardware as well.

> Acked-by: Nicolas Pitre <nico@linaro.org>
>
>
>> ---
>> arch/arm/include/asm/memory.h | 17 +++++++++++------
>> 1 file changed, 11 insertions(+), 6 deletions(-)
>>
>> diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h
>> index 01c710d..4a0108f 100644
>> --- a/arch/arm/include/asm/memory.h
>> +++ b/arch/arm/include/asm/memory.h
>> @@ -157,22 +157,27 @@ extern unsigned long __pv_phys_offset;
>>
>> extern unsigned long __pv_offset;
>>
>> -static inline unsigned long __virt_to_phys(unsigned long x)
>> +static inline phys_addr_t __virt_to_phys(unsigned long x)
>> {
>> unsigned long t;
>> early_patch_imm8(x, t, "add", __pv_offset);
>> return t;
>> }
>>
>> -static inline unsigned long __phys_to_virt(unsigned long x)
>> +static inline unsigned long __phys_to_virt(phys_addr_t x)
>> {
>> unsigned long t;
>> early_patch_imm8(x, t, "sub", __pv_offset);
>> return t;
>> }
>> #else
>> -#define __virt_to_phys(x) ((x) - PAGE_OFFSET + PHYS_OFFSET)
>> -#define __phys_to_virt(x) ((x) - PHYS_OFFSET + PAGE_OFFSET)
>> +
>> +#define __virt_to_phys(x) \
>> + ((phys_addr_t)(x) - PAGE_OFFSET + PHYS_OFFSET)
>> +
>> +#define __phys_to_virt(x) \
>> + ((unsigned long)((phys_addr_t)(x) - PHYS_OFFSET + PAGE_OFFSET))
>> +
>> #endif
>> #endif
>>
>> @@ -207,14 +212,14 @@ static inline phys_addr_t virt_to_phys(const volatile void *x)
>>
>> static inline void *phys_to_virt(phys_addr_t x)
>> {
>> - return (void *)(__phys_to_virt((unsigned long)(x)));
>> + return (void *)__phys_to_virt(x);
>> }
>>
>> /*
>> * Drivers should NOT use these either.
>> */
>> #define __pa(x) __virt_to_phys((unsigned long)(x))
>> -#define __va(x) ((void *)__phys_to_virt((unsigned long)(x)))
>> +#define __va(x) ((void *)__phys_to_virt((phys_addr_t)(x)))
>> #define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
>>
>> /*
>> --
>> 1.7.9.5
>>

--
Thanks
- Cyril


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