Re: [PATCH v6 13/17] arm64:ilp32: add sys_ilp32.c and a separate table (in entry.S) to use it

From: Andreas Schwab
Date: Thu Nov 12 2015 - 08:47:27 EST


Arnd Bergmann <arnd@xxxxxxxx> writes:

> On Thursday 12 November 2015 10:44:55 Andreas Schwab wrote:
>> Arnd Bergmann <arnd@xxxxxxxx> writes:
>>
>> > What do you mean with 32-bit off_t?
>>
>> An ABI with 32-bit off_t, ie. all currently implemented 32-bit ABIs.
>>
>> > Do you mean that glibc emulates a 32-bit off_t on top of the 64-bit
>> > __kernel_loff_t?
>>
>> Glibc is bridging the user-space ABI to the kernel ABI.
>
> Ok, but why?

That's how the ABI is defined right now. I didn't make that up.

Andreas.

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