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Message-Id: <8474D7CA-E5FF-40B1-9428-855854CDDB5F@gmail.com>
Date: Fri, 21 Dec 2018 11:38:16 -0800
From: Nadav Amit <nadav.amit@...il.com>
To: Igor Stoppa <igor.stoppa@...il.com>
Cc: Andy Lutomirski <luto@...capital.net>,
Matthew Wilcox <willy@...radead.org>,
Peter Zijlstra <peterz@...radead.org>,
Dave Hansen <dave.hansen@...ux.intel.com>,
Mimi Zohar <zohar@...ux.vnet.ibm.com>,
igor.stoppa@...wei.com,
Kees Cook <keescook@...omium.org>,
linux-integrity@...r.kernel.org,
kernel-hardening@...ts.openwall.com,
linux-mm@...ck.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH 03/12] __wr_after_init: generic header
> On Dec 19, 2018, at 1:33 PM, Igor Stoppa <igor.stoppa@...il.com> wrote:
>
> +static inline void *wr_memset(void *p, int c, __kernel_size_t len)
> +{
> + return __wr_op((unsigned long)p, (unsigned long)c, len, WR_MEMSET);
> +}
What do you think about doing something like:
#define __wr __attribute__((address_space(5)))
And then make all the pointers to write-rarely memory to use this attribute?
It might require more changes to the code, but can prevent bugs.
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