From: tip-bot for Konrad Rzeszutek Wilk <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@kernel.org,
konrad.wilk@oracle.com, stable@vger.kernel.org,
tglx@linutronix.de, hpa@linux.intel.com
Subject: [tip:x86/urgent] doc, xen: Mention 'earlyprintk=xen' in the documentation.
Date: Mon, 25 Feb 2013 14:13:01 -0800 [thread overview]
Message-ID: <tip-2482a92e7d17187301d7313cfe5021b13393a0b4@git.kernel.org> (raw)
In-Reply-To: <1361825650-14031-2-git-send-email-konrad.wilk@oracle.com>
Commit-ID: 2482a92e7d17187301d7313cfe5021b13393a0b4
Gitweb: http://git.kernel.org/tip/2482a92e7d17187301d7313cfe5021b13393a0b4
Author: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
AuthorDate: Mon, 25 Feb 2013 15:54:08 -0500
Committer: H. Peter Anvin <hpa@linux.intel.com>
CommitDate: Mon, 25 Feb 2013 13:41:18 -0800
doc, xen: Mention 'earlyprintk=xen' in the documentation.
The earlyprintk for Xen PV guests utilizes a simple hypercall
(console_io) to provide output to Xen emergency console.
Note that the Xen hypervisor should be booted with 'loglevel=all'
to output said information.
Reported-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Link: http://lkml.kernel.org/r/1361825650-14031-2-git-send-email-konrad.wilk@oracle.com
Cc: <stable@vger.kernel.org>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
---
Documentation/kernel-parameters.txt | 3 +++
1 file changed, 3 insertions(+)
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 6c72381..c4cc199 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -754,6 +754,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
earlyprintk= [X86,SH,BLACKFIN]
earlyprintk=vga
+ earlyprintk=xen
earlyprintk=serial[,ttySn[,baudrate]]
earlyprintk=ttySn[,baudrate]
earlyprintk=dbgp[debugController#]
@@ -771,6 +772,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
The VGA output is eventually overwritten by the real
console.
+ The xen output can only be used by Xen PV guests.
+
ekgdboc= [X86,KGDB] Allow early kernel console debugging
ekgdboc=kbd
next prev parent reply other threads:[~2013-02-25 22:14 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-25 20:54 [PATCH] Documentation and source code comments updates (v1) Konrad Rzeszutek Wilk
2013-02-25 20:54 ` [PATCH 1/3] xen/documentation: Mention 'earlyprintk=xen' in the documentation Konrad Rzeszutek Wilk
2013-02-25 22:13 ` tip-bot for Konrad Rzeszutek Wilk [this message]
2013-02-25 20:54 ` [PATCH 2/3] kernel-parameters: Document 'console=hvc<n>' Konrad Rzeszutek Wilk
2013-02-25 22:14 ` [tip:x86/urgent] doc, kernel-parameters: Document 'console=hvc<n> ' tip-bot for Konrad Rzeszutek Wilk
2013-02-25 20:54 ` [PATCH 3/3] docs: Fix incorrect comment about 64-bit code segment descriptors Konrad Rzeszutek Wilk
2013-02-25 22:15 ` [tip:x86/urgent] x86, doc: " tip-bot for Konrad Rzeszutek Wilk
2013-02-26 5:08 ` [PATCH] Documentation and source code comments updates (v1) Rob Landley
2013-02-26 16:40 ` Konrad Rzeszutek Wilk
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