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Date: Thu, 7 Dec 2017 09:24:49 +0100
From: Ingo Molnar <mingo@kernel.org>
Subject: Re: [PATCHv4 3/4] x86/boot/compressed/64: Introduce
 place_trampoline()
Message-ID: <20171207082449.a64fr5pmasunygmf@gmail.com>
References: <20171205135942.24634-1-kirill.shutemov@linux.intel.com>
 <20171205135942.24634-4-kirill.shutemov@linux.intel.com>
 <20171207063048.w46rrq2euzhtym3j@gmail.com>
 <20171207081659.GC2739@bombadil.infradead.org>
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To: Matthew Wilcox <willy@infradead.org>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>, Ingo Molnar <mingo@redhat.com>, x86@kernel.org, Thomas Gleixner <tglx@linutronix.de>, "H. Peter Anvin" <hpa@zytor.com>, Linus Torvalds <torvalds@linux-foundation.org>, Andy Lutomirski <luto@amacapital.net>, Cyrill Gorcunov <gorcunov@openvz.org>, Borislav Petkov <bp@suse.de>, Andi Kleen <ak@linux.intel.com>, linux-mm@kvack.org, linux-kernel@vger.kernel.org


* Matthew Wilcox <willy@infradead.org> wrote:

> On Thu, Dec 07, 2017 at 07:30:48AM +0100, Ingo Molnar wrote:
> > > But if the bootloader put the kernel above 4G (not sure if anybody does
> > > this), we would loose control as soon as paging is disabled as code
> > > becomes unreachable.
> > 
> > Yeah, so instead of the double 'as' which is syntactically right but a bit 
> > confusing to read, how about something like:
> > 
> >   But if the bootloader put the kernel above 4G (not sure if anybody does
> >   this), we would loose control as soon as paging is disabled, because the
> >   code becomes unreachable to the CPU.
> 
> btw, it's "lose control".

Indeed!

Thanks,

	Ingo

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