From: will.deacon@arm.com (Will Deacon)
To: linux-arm-kernel@lists.infradead.org
Subject: [RESEND PATCH v4 2/2] arm64: Add seccomp support
Date: Thu, 10 Jul 2014 09:48:10 +0100 [thread overview]
Message-ID: <20140710084810.GD2449@arm.com> (raw)
In-Reply-To: <53BE17AE.7080301@linaro.org>
On Thu, Jul 10, 2014 at 05:33:50AM +0100, AKASHI Takahiro wrote:
> Will,
>
> > (1) Updating syscallno based on w8, but this ties us to the current ABI
> > and could get messy if this register changes in the future.
>
> So, is this the conclusion that I should follow?
I think so, with the exception that if the tracer/debugger sets it to -1 to
abort the syscall, then we should restore the original value.
Will
WARNING: multiple messages have this Message-ID (diff)
From: Will Deacon <will.deacon@arm.com>
To: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: "wad@chromium.org" <wad@chromium.org>,
Catalin Marinas <Catalin.Marinas@arm.com>,
"dsaxena@linaro.org" <dsaxena@linaro.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linaro-kernel@lists.linaro.org" <linaro-kernel@lists.linaro.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [RESEND PATCH v4 2/2] arm64: Add seccomp support
Date: Thu, 10 Jul 2014 09:48:10 +0100 [thread overview]
Message-ID: <20140710084810.GD2449@arm.com> (raw)
In-Reply-To: <53BE17AE.7080301@linaro.org>
On Thu, Jul 10, 2014 at 05:33:50AM +0100, AKASHI Takahiro wrote:
> Will,
>
> > (1) Updating syscallno based on w8, but this ties us to the current ABI
> > and could get messy if this register changes in the future.
>
> So, is this the conclusion that I should follow?
I think so, with the exception that if the tracer/debugger sets it to -1 to
abort the syscall, then we should restore the original value.
Will
next prev parent reply other threads:[~2014-07-10 8:48 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-04 7:31 [RESEND PATCH v4 0/2] arm64: Add seccomp support AKASHI Takahiro
2014-07-04 7:31 ` AKASHI Takahiro
2014-07-04 7:31 ` [RESEND PATCH v4 1/2] asm-generic: Add generic seccomp.h for secure computing mode 1 AKASHI Takahiro
2014-07-04 7:31 ` AKASHI Takahiro
2014-07-04 7:31 ` [RESEND PATCH v4 2/2] arm64: Add seccomp support AKASHI Takahiro
2014-07-04 7:31 ` AKASHI Takahiro
2014-07-09 11:12 ` Will Deacon
2014-07-09 11:12 ` Will Deacon
2014-07-10 4:33 ` AKASHI Takahiro
2014-07-10 4:33 ` AKASHI Takahiro
2014-07-10 8:48 ` Will Deacon [this message]
2014-07-10 8:48 ` Will Deacon
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