From: Andi Kleen <ak@linux.intel.com>
To: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Borislav Petkov <bp@suse.de>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Ingo Molnar <mingo@redhat.com>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andy Lutomirski <luto@amacapital.net>,
Cyrill Gorcunov <gorcunov@openvz.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCHv2 0/4] x86: 5-level related changes into decompression code
Date: Wed, 29 Nov 2017 12:58:15 -0800 [thread overview]
Message-ID: <20171129205815.GE3070@tassilo.jf.intel.com> (raw)
In-Reply-To: <20171129170831.2iqpop2u534mgrbc@node.shutemov.name>
> We're really early in the boot -- startup_64 in decompression code -- and
> I don't know a way print a message there. Is there a way?
>
> no_longmode handled by just hanging the machine. Is it enough for no_la57
> case too?
The way to handle it is to check it early in the real mode boot code when you
can still print messages. That is how missing long mode is handled.
-Andi
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next prev parent reply other threads:[~2017-11-29 20:58 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-10 22:06 Kirill A. Shutemov
2017-11-10 22:06 ` [PATCHv2 1/4] x86/boot/compressed/64: Rename pagetable.c to kaslr_64.c Kirill A. Shutemov
2017-11-10 22:06 ` [PATCHv2 2/4] x86/boot/compressed/64: Detect and handle 5-level paging at boot-time Kirill A. Shutemov
2017-11-10 22:06 ` [PATCHv2 3/4] x86/boot/compressed/64: Introduce place_trampoline() Kirill A. Shutemov
2017-11-10 22:06 ` [PATCHv2 4/4] x86/boot/compressed/64: Handle 5-level paging boot if kernel is above 4G Kirill A. Shutemov
2017-11-22 8:09 ` [PATCHv2 0/4] x86: 5-level related changes into decompression code Kirill A. Shutemov
2017-11-29 15:49 ` Borislav Petkov
2017-11-29 16:13 ` Kirill A. Shutemov
2017-11-29 16:40 ` Thomas Gleixner
2017-11-29 17:08 ` Kirill A. Shutemov
2017-11-29 17:48 ` Borislav Petkov
2017-11-29 19:01 ` H. Peter Anvin
2017-11-29 19:19 ` Borislav Petkov
2017-11-29 21:33 ` H. Peter Anvin
2017-11-29 22:31 ` Borislav Petkov
2017-11-29 23:24 ` H. Peter Anvin
2017-11-30 1:27 ` Konrad Rzeszutek Wilk
2017-11-30 10:12 ` Borislav Petkov
2017-11-30 7:31 ` Kirill A. Shutemov
2017-11-30 10:14 ` Borislav Petkov
2017-11-30 15:45 ` Joe Perches
2017-11-29 20:58 ` Andi Kleen [this message]
2017-11-29 21:03 ` hpa
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