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From: geoff@infradead.org (Geoff Levand)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v18 12/13] arm64: kdump: update a kernel doc
Date: Thu, 09 Jun 2016 20:08:45 +0000	[thread overview]
Message-ID: <c43a85cef41f9b81abb1aa96bd158575cdd38d4f.1465502767.git.geoff@infradead.org> (raw)
In-Reply-To: <cover.1465502767.git.geoff@infradead.org>

From: AKASHI Takahiro <takahiro.akashi@linaro.org>

This patch adds arch specific descriptions about kdump usage on arm64
to kdump.txt.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
---
 Documentation/kdump/kdump.txt | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/Documentation/kdump/kdump.txt b/Documentation/kdump/kdump.txt
index 88ff63d..5d6da09 100644
--- a/Documentation/kdump/kdump.txt
+++ b/Documentation/kdump/kdump.txt
@@ -18,7 +18,7 @@ memory image to a dump file on the local disk, or across the network to
 a remote system.
 
 Kdump and kexec are currently supported on the x86, x86_64, ppc64, ia64,
-s390x and arm architectures.
+s390x, arm and arm64 architectures.
 
 When the system kernel boots, it reserves a small section of memory for
 the dump-capture kernel. This ensures that ongoing Direct Memory Access
@@ -249,6 +249,12 @@ Dump-capture kernel config options (Arch Dependent, arm)
 
     AUTO_ZRELADDR=y
 
+Dump-capture kernel config options (Arch Dependent, arm64)
+----------------------------------------------------------
+
+1) Currently, kvm will not be enabled on the dump-capture kernel even
+   if it is configured.
+
 Extended crashkernel syntax
 ===========================
 
@@ -305,6 +311,8 @@ Boot into System Kernel
    kernel will automatically locate the crash kernel image within the
    first 512MB of RAM if X is not given.
 
+   On arm64, use "crashkernel=Y[@X]".  Note that the start address of
+   the kernel, X if explicitly specified, must be aligned to 2MiB (0x200000).
 
 Load the Dump-capture Kernel
 ============================
@@ -327,6 +335,8 @@ For s390x:
 	- Use image or bzImage
 For arm:
 	- Use zImage
+For arm64:
+	- Use vmlinux or Image
 
 If you are using a uncompressed vmlinux image then use following command
 to load dump-capture kernel.
@@ -370,6 +380,9 @@ For s390x:
 For arm:
 	"1 maxcpus=1 reset_devices"
 
+For arm64:
+	"1 maxcpus=1 reset_devices"
+
 Notes on loading the dump-capture kernel:
 
 * By default, the ELF headers are stored in ELF64 format to support
-- 
2.5.0

WARNING: multiple messages have this Message-ID (diff)
From: Geoff Levand <geoff@infradead.org>
To: Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will.deacon@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>,
	marc.zyngier@arm.com, kexec@lists.infradead.org,
	AKASHI Takahiro <takahiro.akashi@linaro.org>,
	James Morse <james.morse@arm.com>,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH v18 12/13] arm64: kdump: update a kernel doc
Date: Thu, 09 Jun 2016 20:08:45 +0000	[thread overview]
Message-ID: <c43a85cef41f9b81abb1aa96bd158575cdd38d4f.1465502767.git.geoff@infradead.org> (raw)
In-Reply-To: <cover.1465502767.git.geoff@infradead.org>

From: AKASHI Takahiro <takahiro.akashi@linaro.org>

This patch adds arch specific descriptions about kdump usage on arm64
to kdump.txt.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
---
 Documentation/kdump/kdump.txt | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/Documentation/kdump/kdump.txt b/Documentation/kdump/kdump.txt
index 88ff63d..5d6da09 100644
--- a/Documentation/kdump/kdump.txt
+++ b/Documentation/kdump/kdump.txt
@@ -18,7 +18,7 @@ memory image to a dump file on the local disk, or across the network to
 a remote system.
 
 Kdump and kexec are currently supported on the x86, x86_64, ppc64, ia64,
-s390x and arm architectures.
+s390x, arm and arm64 architectures.
 
 When the system kernel boots, it reserves a small section of memory for
 the dump-capture kernel. This ensures that ongoing Direct Memory Access
@@ -249,6 +249,12 @@ Dump-capture kernel config options (Arch Dependent, arm)
 
     AUTO_ZRELADDR=y
 
+Dump-capture kernel config options (Arch Dependent, arm64)
+----------------------------------------------------------
+
+1) Currently, kvm will not be enabled on the dump-capture kernel even
+   if it is configured.
+
 Extended crashkernel syntax
 ===========================
 
@@ -305,6 +311,8 @@ Boot into System Kernel
    kernel will automatically locate the crash kernel image within the
    first 512MB of RAM if X is not given.
 
+   On arm64, use "crashkernel=Y[@X]".  Note that the start address of
+   the kernel, X if explicitly specified, must be aligned to 2MiB (0x200000).
 
 Load the Dump-capture Kernel
 ============================
@@ -327,6 +335,8 @@ For s390x:
 	- Use image or bzImage
 For arm:
 	- Use zImage
+For arm64:
+	- Use vmlinux or Image
 
 If you are using a uncompressed vmlinux image then use following command
 to load dump-capture kernel.
@@ -370,6 +380,9 @@ For s390x:
 For arm:
 	"1 maxcpus=1 reset_devices"
 
+For arm64:
+	"1 maxcpus=1 reset_devices"
+
 Notes on loading the dump-capture kernel:
 
 * By default, the ELF headers are stored in ELF64 format to support
-- 
2.5.0



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  parent reply	other threads:[~2016-06-09 20:08 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-06-09 20:08 [PATCH v18 00/13] arm64 kexec kernel patches Geoff Levand
2016-06-09 20:08 ` Geoff Levand
2016-06-09 20:08 ` [PATCH v18 06/13] arm64: kdump: reserve memory for crash dump kernel Geoff Levand
2016-06-09 20:08   ` Geoff Levand
2016-06-09 20:08 ` [PATCH v18 03/13] arm64/kexec: Add core kexec support Geoff Levand
2016-06-09 20:08   ` Geoff Levand
2016-06-15  8:14   ` AKASHI Takahiro
2016-06-15  8:14     ` AKASHI Takahiro
2016-06-15 17:10   ` James Morse
2016-06-15 17:10     ` James Morse
2016-06-16 22:41     ` Geoff Levand
2016-06-16 22:41       ` Geoff Levand
2016-06-09 20:08 ` [PATCH v18 02/13] arm64: Add cpus_are_stuck_in_kernel Geoff Levand
2016-06-09 20:08   ` Geoff Levand
2016-06-09 20:08 ` [PATCH v18 05/13] arm64/kexec: Enable kexec in the arm64 defconfig Geoff Levand
2016-06-09 20:08   ` Geoff Levand
2016-06-09 20:08 ` [PATCH v18 07/13] arm64: limit memory regions based on DT property, usable-memory Geoff Levand
2016-06-09 20:08   ` Geoff Levand
2016-06-09 20:08 ` [PATCH v18 04/13] arm64/kexec: Add pr_debug output Geoff Levand
2016-06-09 20:08   ` Geoff Levand
2016-06-15 17:14   ` James Morse
2016-06-15 17:14     ` James Morse
2016-06-16 22:58     ` Geoff Levand
2016-06-16 22:58       ` Geoff Levand
2016-06-09 20:08 ` [PATCH v18 08/13] arm64: kdump: implement machine_crash_shutdown() Geoff Levand
2016-06-09 20:08   ` Geoff Levand
2016-06-14  7:13   ` AKASHI Takahiro
2016-06-14  7:13     ` AKASHI Takahiro
2016-06-14 21:56     ` Geoff Levand
2016-06-14 21:56       ` Geoff Levand
2016-06-09 20:08 ` [PATCH v18 01/13] arm64: Add back cpu reset routines Geoff Levand
2016-06-09 20:08   ` Geoff Levand
2016-06-09 20:08 ` [PATCH v18 09/13] arm64: kdump: add kdump support Geoff Levand
2016-06-09 20:08   ` Geoff Levand
2016-06-09 20:08 ` Geoff Levand [this message]
2016-06-09 20:08   ` [PATCH v18 12/13] arm64: kdump: update a kernel doc Geoff Levand
2016-06-09 20:08 ` [PATCH v18 10/13] arm64: kdump: add VMCOREINFO for user-space coredump tools Geoff Levand
2016-06-09 20:08   ` Geoff Levand
2016-06-09 20:08 ` [PATCH v18 13/13] Documentation: dt: usable-memory and elfcorehdr nodes for arm64 kexec Geoff Levand
2016-06-09 20:08   ` Geoff Levand
2016-06-09 20:08 ` [PATCH v18 11/13] arm64: kdump: enable kdump in the arm64 defconfig Geoff Levand
2016-06-09 20:08   ` Geoff Levand

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