Subject: [PATCHv2 2/2] arm64: Correct virt_addr_valid

From: [email-masked] (Laura Abbott)
Date: Wed, 18 Dec 2013 10:20:32 -0800

On 12/17/2013 4:00 AM, Catalin Marinas wrote:
> On Mon, Dec 16, 2013 at 07:01:45PM +0000, Laura Abbott wrote:
>> diff --git a/arch/arm64/include/asm/memory.h b/arch/arm64/include/asm/memory.h
>> index 3776217..b8ec776 100644
>> --- a/arch/arm64/include/asm/memory.h
>> +++ b/arch/arm64/include/asm/memory.h
>> @@ -146,8 +146,9 @@ static inline void *phys_to_virt(phys_addr_t x)
>>   #define ARCH_PFN_OFFSET		PHYS_PFN_OFFSET
>>
>>   #define virt_to_page(kaddr)	pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
>> -#define	virt_addr_valid(kaddr)	(((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
>> -				 ((void *)(kaddr) < (void *)high_memory))
>> +#define virt_addr_valid(kaddr)	(pfn_valid(__pa(kaddr) >> PAGE_SHIFT) && \
>> +	((unsigned long)(kaddr) >= PAGE_OFFSET && (unsigned long)(kaddr) < (unsigned long)high_memory))
>> +
>
> I still think the original patch was fine for arm64, no need for
> additional checks since we don't have highmem and __pa() is always
> linear.
>

Okay, do you want to go ahead and just take the previous version then?

Laura

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