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Message-ID: <f4071ce4-3744-35c9-df22-cb0a9d8db8ba@suse.cz>
Date: Tue, 16 Apr 2019 10:33:32 +0200
From: Vlastimil Babka <vbabka@...e.cz>
To: Andrew Morton <akpm@...ux-foundation.org>,
Alexander Potapenko <glider@...gle.com>
Cc: linux-security-module@...r.kernel.org, linux-mm@...ck.org,
ndesaulniers@...gle.com, kcc@...gle.com, dvyukov@...gle.com,
keescook@...omium.org, sspatil@...roid.com, labbott@...hat.com,
kernel-hardening@...ts.openwall.com
Subject: Re: [PATCH] mm: security: introduce CONFIG_INIT_HEAP_ALL
On 4/16/19 4:02 AM, Andrew Morton wrote:
> Requiring a kernel rebuild is rather user-hostile. A boot option
> (early_param()) would be much more useful and I expect that the loss in
> coverage would be small and acceptable? Could possibly use the
> static_branch infrastructure.
Agreed. There could be a config option to make it default on if no param
given. Then a config option to (not) compile this in at all would be
probably superfluous, although small systems/architectures without
effective static keys might care.
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