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From: Jiri Kosina <jkosina@suse.cz>
To: Borislav Petkov <bp@suse.de>
Cc: Ingo Molnar <mingo@kernel.org>, Yinghai Lu <yinghai@kernel.org>,
	Matt Fleming <matt.fleming@intel.com>,
	"H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@redhat.com>,
	Kees Cook <keescook@chromium.org>, Baoquan He <bhe@redhat.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	"linux-efi@vger.kernel.org" <linux-efi@vger.kernel.org>,
	Josh Triplett <josh@joshtriplett.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Ard Biesheuvel <ard.biesheuvel@linaro.org>,
	Junjie Mao <eternal.n08@gmail.com>
Subject: Re: [PATCH] Revert "x86/mm/ASLR: Propagate base load address calculation"
Date: Mon, 16 Mar 2015 14:56:11 +0100 (CET)	[thread overview]
Message-ID: <alpine.LNX.2.00.1503161441280.25438@pobox.suse.cz> (raw)
In-Reply-To: <20150316100628.GD22995@pd.tnic>

On Mon, 16 Mar 2015, Borislav Petkov wrote:

> On Sat, Mar 14, 2015 at 10:59:23AM +0100, Borislav Petkov wrote:
> > In addition to what you've said, I have only one proposal: we revert
> > the whole crap and do it again, this time nice and clean in tip. It'll
> > stay there as long as it has to. No half-arsed commit messages, no
> > misunderstood crap, no lala code f*ckery. Whatever it takes, as long as
> > it takes.
> 
> And here it is:
> 
> ---
> From: Borislav Petkov <bp@suse.de>
> Date: Mon, 16 Mar 2015 10:57:56 +0100
> Subject: [PATCH] Revert "x86/mm/ASLR: Propagate base load address calculation"
> 
> This reverts commit f47233c2d34f243ecdaac179c3408a39ff9216a7.
> 
> The main reason for the revert is that in order to make this work, we
> need non-trivial changes to the x86 boot code which we didn't manage to
> get done in time for merging.
> 
> And even if we did, they would've been too risky so instead of rushing
> things and break booting 4.1 on boxes left and right, we will be very
> strict and conservative and will take our time with this to fix and test
> it properly.
> 
> Signed-off-by: Borislav Petkov <bp@suse.de>
> Cc: Jiri Kosina <jkosina@suse.cz>

Agreed. Let's work on a better refresh for 4.1+. The fix attempts were 
quite chaotic.

Acked-by: Jiri Kosina <jkosina@suse.cz>

-- 
Jiri Kosina
SUSE Labs

  parent reply	other threads:[~2015-03-16 13:56 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-07 22:07 [PATCH v3 0/7] x86, boot: clean up kasl Yinghai Lu
2015-03-07 22:07 ` [PATCH v3 1/7] x86, kaslr: Use init_size instead of run_size Yinghai Lu
2015-03-09 12:49   ` Borislav Petkov
2015-03-09 15:58     ` Ingo Molnar
2015-03-09 15:58       ` Borislav Petkov
2015-03-09 19:35     ` Yinghai Lu
2015-03-09 20:00       ` Borislav Petkov
2015-03-09 20:06         ` Yinghai Lu
2015-03-09 20:18           ` Borislav Petkov
2015-03-09 21:28             ` Yinghai Lu
2015-03-10  0:42   ` Kees Cook
2015-03-13 12:27   ` Ingo Molnar
2015-03-14  2:47     ` Yinghai Lu
2015-03-14  7:53       ` Ingo Molnar
2015-03-14  9:59         ` Borislav Petkov
2015-03-16 10:06           ` [PATCH] Revert "x86/mm/ASLR: Propagate base load address calculation" Borislav Petkov
2015-03-16 12:11             ` [tip:x86/urgent] " tip-bot for Borislav Petkov
2015-03-16 19:32               ` Yinghai Lu
2015-03-16 13:56             ` Jiri Kosina [this message]
2015-03-16 19:15               ` [PATCH] " Yinghai Lu
2015-03-17  8:14                 ` Ingo Molnar
2015-03-07 22:07 ` [PATCH v3 2/7] x86, boot: Move ZO to end of buffer Yinghai Lu
2015-03-10  0:54   ` Kees Cook
2015-03-10  1:04     ` Yinghai Lu
2015-03-10  5:59     ` Borislav Petkov
2015-03-10  8:00   ` Borislav Petkov
2015-03-10  9:34     ` Jiri Kosina
2015-03-10  9:35       ` Borislav Petkov
2015-03-10 15:11     ` Yinghai Lu
2015-03-10 15:13       ` Borislav Petkov
2015-03-10 16:59     ` Kees Cook
2015-03-07 22:07 ` [PATCH v3 3/7] x86, boot: Don't overlap VO with ZO data Yinghai Lu
2015-03-10  9:34   ` Borislav Petkov
2015-03-10 15:05     ` Yinghai Lu
2015-03-10 15:10       ` Borislav Petkov
2015-03-10 15:17         ` Yinghai Lu
2015-03-10 15:21           ` Borislav Petkov
2015-03-10 15:42             ` Yinghai Lu
2015-03-10 15:48               ` Borislav Petkov
2015-03-10 19:29                 ` Yinghai Lu
2015-03-07 22:07 ` [PATCH v3 4/7] x86, kaslr: Access the correct kaslr_enabled variable Yinghai Lu
2015-03-10  0:55   ` Kees Cook
2015-03-07 22:07 ` [PATCH v3 5/7] x86, kaslr: Consolidate mem_avoid array filling Yinghai Lu
2015-03-10  1:00   ` Kees Cook
2015-03-10  1:10     ` Yinghai Lu
2015-03-10  1:26       ` Kees Cook
2015-03-07 22:07 ` [PATCH v3 6/7] x86, boot: Split kernel_ident_mapping_init to another file Yinghai Lu
2015-03-10  1:03   ` Kees Cook
2015-03-07 22:07 ` [PATCH v3 7/7] x86, kaslr, 64bit: Set new or extra ident_mapping Yinghai Lu
2015-03-10  1:09   ` Kees Cook
2015-03-10  1:14     ` Yinghai Lu
2015-03-10  6:54       ` Yinghai Lu
2015-03-10  0:39 ` [PATCH v3 0/7] x86, boot: clean up kasl Kees Cook
2015-03-10  0:54   ` Yinghai Lu

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