x86_64: Add a comment explaining the TASK_SIZE_MAX guard page
authorAndy Lutomirski <luto@amacapital.net>
Tue, 4 Nov 2014 23:46:21 +0000 (15:46 -0800)
committerIngo Molnar <mingo@kernel.org>
Mon, 10 Nov 2014 09:43:13 +0000 (10:43 +0100)
commit07114f0f1cda8b2ef6e884d0c7b268a32cce7903
treed5a4cdabfea6290b9b2f77515c4dc4c3b50d301a
parent1ad83c858c7d4ea210429142c99a1548e6715a35
x86_64: Add a comment explaining the TASK_SIZE_MAX guard page

That guard page is absolutely necessary; explain why for
posterity.

Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Link: http://lkml.kernel.org/r/23320cb5017c2da8475ec20fcde8089d82aa2699.1415144745.git.luto@amacapital.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/x86/include/asm/processor.h