From: Matthew Wilcox <willy@infradead.org>
To: Ingo Molnar <mingo@kernel.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
Subject: Re: [PATCHv4 3/4] x86/boot/compressed/64: Introduce place_trampoline()
Date: Thu, 7 Dec 2017 00:17:00 -0800 [thread overview]
Message-ID: <20171207081659.GC2739@bombadil.infradead.org> (raw)
In-Reply-To: <20171207063048.w46rrq2euzhtym3j@gmail.com>
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".
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next prev parent reply other threads:[~2017-12-07 8:17 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-05 13:59 [PATCHv4 0/4] x86: 5-level related changes into decompression code Kirill A. Shutemov
2017-12-05 13:59 ` [PATCHv4 1/4] x86/boot/compressed/64: Fix build with GCC < 5 Kirill A. Shutemov
2017-12-07 6:16 ` Ingo Molnar
2017-12-05 13:59 ` [PATCHv4 2/4] x86/boot/compressed/64: Rename pagetable.c to kaslr_64.c Kirill A. Shutemov
2017-12-07 6:17 ` Ingo Molnar
2017-12-05 13:59 ` [PATCHv4 3/4] x86/boot/compressed/64: Introduce place_trampoline() Kirill A. Shutemov
2017-12-07 6:30 ` Ingo Molnar
2017-12-07 8:17 ` Matthew Wilcox [this message]
2017-12-07 8:24 ` Ingo Molnar
2017-12-08 11:07 ` Kirill A. Shutemov
2017-12-08 11:28 ` Ingo Molnar
2017-12-05 13:59 ` [PATCHv4 4/4] x86/boot/compressed/64: Handle 5-level paging boot if kernel is above 4G Kirill A. Shutemov
2017-12-07 7:03 ` Ingo Molnar
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