From: "Kirill A. Shutemov" <kirill@shutemov.name>
To: Ingo Molnar <mingo@kernel.org>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Ingo Molnar <mingo@redhat.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
x86@kernel.org, Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>,
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: [PATCH 3/4] x86/boot/compressed/64: Introduce place_trampoline()
Date: Fri, 10 Nov 2017 12:52:56 +0300 [thread overview]
Message-ID: <20171110095256.vmndegdixd5keyqo@node.shutemov.name> (raw)
In-Reply-To: <20171110091453.6pk5lotvom2cf4mv@gmail.com>
On Fri, Nov 10, 2017 at 10:14:53AM +0100, Ingo Molnar wrote:
> I'm wondering, how did you test it if no current bootloader puts the kernel to
> above addresses of 4G?
I didn't test it directly.
I've checked with debugger that there's no memory accesses above 1M
between disabling paging in the trampoline and returning back from
trampoline to the main kernel image code.
--
Kirill A. Shutemov
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next prev parent reply other threads:[~2017-11-10 9:52 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-01 11:54 [PATCH 0/4] x86: 5-level related changes into decompression code Kirill A. Shutemov
2017-11-01 11:55 ` [PATCH 1/4] x86/boot/compressed/64: Compile pagetable.c unconditionally Kirill A. Shutemov
2017-11-10 9:12 ` Ingo Molnar
2017-11-10 9:25 ` Kirill A. Shutemov
2017-11-01 11:55 ` [PATCH 2/4] x86/boot/compressed/64: Detect and handle 5-level paging at boot-time Kirill A. Shutemov
2017-11-10 9:13 ` Ingo Molnar
2017-11-01 11:55 ` [PATCH 3/4] x86/boot/compressed/64: Introduce place_trampoline() Kirill A. Shutemov
2017-11-10 9:14 ` Ingo Molnar
2017-11-10 9:52 ` Kirill A. Shutemov [this message]
2017-11-10 9:17 ` Ingo Molnar
2017-11-10 9:28 ` Ingo Molnar
2017-11-10 9:55 ` Kirill A. Shutemov
2017-11-10 12:46 ` Ingo Molnar
2017-11-10 9:29 ` Ingo Molnar
2017-11-10 9:57 ` Kirill A. Shutemov
2017-11-01 11:55 ` [PATCH 4/4] x86/boot/compressed/64: Handle 5-level paging boot if kernel is above 4G Kirill A. Shutemov
-- strict thread matches above, loose matches on Subject: below --
2017-10-20 19:59 [PATCH 0/4] Boot-time switching between 4- and 5-level paging for 4.15, Part 2 Kirill A. Shutemov
2017-10-20 19:59 ` [PATCH 3/4] x86/boot/compressed/64: Introduce place_trampoline() Kirill A. Shutemov
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