From: Yinghai Lu <yinghai@kernel.org>
To: Kees Cook <keescook@chromium.org>
Cc: Ingo Molnar <mingo@kernel.org>, Borislav Petkov <bp@suse.de>,
Baoquan He <bhe@redhat.com>, Ingo Molnar <mingo@redhat.com>,
"H. Peter Anvin" <hpa@zytor.com>, Borislav Petkov <bp@alien8.de>,
Vivek Goyal <vgoyal@redhat.com>,
Andy Lutomirski <luto@kernel.org>,
Lasse Collin <lasse.collin@tukaani.org>,
Andrew Morton <akpm@linux-foundation.org>,
Dave Young <dyoung@redhat.com>,
"kernel-hardening@lists.openwall.com"
<kernel-hardening@lists.openwall.com>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v7 1/9] x86/KASLR: Initialize mapping_info every time
Date: Mon, 9 May 2016 15:28:33 -0700 [thread overview]
Message-ID: <CAE9FiQVMq=Eh9m4BasuthD9-2qXwy32wB8egYsEp1BD6SPrnxw@mail.gmail.com> (raw)
In-Reply-To: <CAGXu5jJk0MMNP1vvS6oDMMVXLmrSybCf5E_F7q45=c1a=PX8kQ@mail.gmail.com>
On Mon, May 9, 2016 at 3:23 PM, Kees Cook <keescook@chromium.org> wrote:
>> The exact reason to have assigning in functions.
>>
>> pgt_data address could be changed during kernel relocation.
>> so can not assigned during compiling time.
>
> Ah-ha, that explains why I had to keep it on the stack. Thanks for the
> clarification!
My fault, I should put that comment in the code at first place.
Thanks
Yinghai
next prev parent reply other threads:[~2016-05-09 22:28 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-09 20:22 [PATCH v7 0/9] x86/KASLR: Randomize virtual address separately Kees Cook
2016-05-09 20:22 ` [PATCH v7 1/9] x86/KASLR: Initialize mapping_info every time Kees Cook
2016-05-09 22:01 ` Yinghai Lu
2016-05-09 22:23 ` Yinghai Lu
2016-05-09 22:27 ` Yinghai Lu
2016-05-09 22:23 ` Kees Cook
2016-05-09 22:28 ` Yinghai Lu [this message]
2016-05-10 5:58 ` Ingo Molnar
2016-05-10 11:21 ` Borislav Petkov
2016-05-10 8:40 ` [tip:x86/boot] " tip-bot for Kees Cook
2016-05-09 20:22 ` [PATCH v7 2/9] x86/boot: Add missing file header comments Kees Cook
2016-05-10 8:41 ` [tip:x86/boot] " tip-bot for Kees Cook
2016-05-09 20:22 ` [PATCH v7 3/9] x86/KASLR: Add slot_area to manage random_addr slots Kees Cook
2016-05-10 8:41 ` [tip:x86/boot] x86/KASLR: Add 'struct slot_area' " tip-bot for Baoquan He
2016-05-09 20:22 ` [PATCH v7 4/9] x86/KASLR: Return earliest overlap when avoiding regions Kees Cook
2016-05-10 8:42 ` [tip:x86/boot] " tip-bot for Kees Cook
2016-05-09 20:22 ` [PATCH v7 5/9] x86/KASLR: Add virtual address choosing function Kees Cook
2016-05-10 8:42 ` [tip:x86/boot] " tip-bot for Baoquan He
2016-05-09 20:22 ` [PATCH v7 6/9] x86/KASLR: Clarify purpose of each get_random_long() Kees Cook
2016-05-10 8:42 ` [tip:x86/boot] " tip-bot for Kees Cook
2016-05-09 20:22 ` [PATCH v7 7/9] x86/KASLR: Randomize virtual address separately Kees Cook
2016-05-09 20:22 ` [PATCH v7 8/9] x86/KASLR: Add physical address randomization >4G Kees Cook
2016-05-09 20:22 ` [PATCH v7 9/9] x86/KASLR: Allow randomization below load address Kees Cook
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