linux-kernel - Re: [PATCH 0/4] MPX and Protection Keys Updates

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Date:   Tue, 21 Nov 2017 09:34:37 +0100
From:   Ingo Molnar <mingo@...nel.org>
To:     Dave Hansen <dave.hansen@...ux.intel.com>
Cc:     linux-kernel@...r.kernel.org, x86@...nel.org
Subject: Re: [PATCH 0/4] MPX and Protection Keys Updates


* Dave Hansen <dave.hansen@...ux.intel.com> wrote:

> Hi Ingo,
> 
> Here are some small updates to Protection Keys documentation, and
> some small fixes to the selftests that we discussed.

Note that even with all the patches applied, a build warning remains:

gcc -m32 -o /home/mingo/tip/tools/testing/selftests/x86/protection_keys_32 -O2 -g -std=gnu99 -pthread -Wall -no-pie  protection_keys.c -lrt -ldl -lm
protection_keys.c: In function ‘dumpit’:
protection_keys.c:419:3: warning: ignoring return value of ‘write’, declared with 
attribute warn_unused_result [-Wunused-result]
   write(1, buf, nr_read);
   ^~~~~~~~~~~~~~~~~~~~~~

Thanks,

	Ingo