From mboxrd@z Thu Jan  1 00:00:00 1970
From: catalin.marinas@arm.com (Catalin Marinas)
Date: Fri, 29 Apr 2016 17:01:55 +0100
Subject: [PATCH 24/25] arm64:ilp32: add vdso-ilp32 and use for signal
 return
In-Reply-To: <1459894127-17698-25-git-send-email-ynorov@caviumnetworks.com>
References: <1459894127-17698-1-git-send-email-ynorov@caviumnetworks.com>
 <1459894127-17698-25-git-send-email-ynorov@caviumnetworks.com>
Message-ID: <20160429160154.GC30316@e104818-lin.cambridge.arm.com>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On Wed, Apr 06, 2016 at 01:08:46AM +0300, Yury Norov wrote:
> ILP32 VDSO exports next symbols:
>  __kernel_rt_sigreturn;
>  __kernel_gettimeofday;
>  __kernel_clock_gettime;
>  __kernel_clock_getres;

[...]

> +$(obj)/gettimeofday-ilp32.o: $(src)/../vdso/gettimeofday.S
> +	$(call if_changed_dep,vdso-ilp32as)

Are struct timeval and timespec the same between ILP32 and LP64? For
example, __kernel_gettimeofday() assumes TVAL_TV_SEC offset defined in
asm-offsets.c based on the LP64 timeval.

> +$(obj)/sigreturn-ilp32.o: $(src)/../vdso/sigreturn.S
> +	$(call if_changed_dep,vdso-ilp32as)

This one should be fine because ILP32 uses the same generic
__NR_rt_sigreturn syscall number.

-- 
Catalin