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Message-ID: <20170407093648.k2hl6dswzlz5ashh@hirez.programming.kicks-ass.net>
Date: Fri, 7 Apr 2017 11:36:48 +0200
From: Peter Zijlstra <peterz@...radead.org>
To: Kees Cook <keescook@...omium.org>
Cc: kernel-hardening@...ts.openwall.com,
Mark Rutland <mark.rutland@....com>,
Andy Lutomirski <luto@...nel.org>, Hoeun Ryu <hoeun.ryu@...il.com>,
PaX Team <pageexec@...email.hu>, Emese Revfy <re.emese@...il.com>,
Russell King <linux@...linux.org.uk>, x86@...nel.org,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [RFC v2][PATCH 08/11] ARM: Implement
__arch_rare_write_begin/end()
On Wed, Mar 29, 2017 at 11:16:00AM -0700, Kees Cook wrote:
> +static inline unsigned long __arch_rare_write_end(void)
> +{
> + BUG_ON(test_domain(DOMAIN_WR_RARE, DOMAIN_CLIENT));
> + modify_domain(DOMAIN_WR_RARE, DOMAIN_CLIENT);
> + preempt_enable_no_resched();
NAK
> + return 0;
> +}
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