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Date: Thu, 24 Jul 2014 16:16:28 +0100 From: Catalin Marinas <catalin.marinas@....com> To: Andy Lutomirski <luto@...capital.net> Cc: AKASHI Takahiro <takahiro.akashi@...aro.org>, Deepak Saxena <dsaxena@...aro.org>, Will Drewry <wad@...omium.org>, Kees Cook <keescook@...omium.org>, "linaro-kernel@...ts.linaro.org" <linaro-kernel@...ts.linaro.org>, "linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>, Will Deacon <Will.Deacon@....com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: Re: [PATCH v5 3/3] arm64: Add seccomp support On Thu, Jul 24, 2014 at 04:00:03PM +0100, Andy Lutomirski wrote: > On Jul 23, 2014 10:40 PM, "AKASHI Takahiro" <takahiro.akashi@...aro.org> wrote: > > when I implemented audit for arm64, the assumptions were > > * If userspace is LE, then the kernel is also LE and if BE, then the kernel is BE. > > * the syscall numbers and how arguments are encoded are the same btw BE and LE. > > So syscall_get_arch() always return the same value. > > If arm64 ever adds support for mixed-endian userspace, this could > become awkward. Hmm. I really doubt we would ever support mixed endian user space. Too many problems with translating syscalls, futexes (someone looked into this and gave up eventually). -- Catalin -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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