Le 14/07/2019 à 13:33, Arnd Bergmann a écrit :
> On Sun, Jul 14, 2019 at 12:41 PM Richard Henderson
> <richard.hender...@linaro.org> wrote:
>>
>> On 7/12/19 3:55 PM, Arnd Bergmann wrote:
>>> glibc will have to create a definition that matches the kernel, which uses
>>>
>>> struct __kernel_timespec {
>>> __s64 tv_sec;
>>> __s64 tv_nsec;
>>> };
>>>
>>> As posix requires tv_nsec to be 'long', you need padding between
>>> tv_sec and tv_nsec to have a libc definition matching the kernel's
>>> binary layout.
>>
>> Yes, but that's glibc's lookout. All qemu cares about emulating is the
>> kernel
>> interface. So I think Laurent is right here, in that two reads handle the
>> above structure just fine.
>
> But that only works if the structure defined by qemu matches the kernel's.
>
> The structure that Laurent proposed
>
> struct target_timeval64 {
> abi_llong tv_sec;
> abi_long tv_usec;
> };
>
> is not compatible with the kernel or the glibc structure.
Yes, you're right. The next patch revision will change this to the
kernel structure one.
Thanks,
Laurent
