(2013/12/10 23:49), Vivek Goyal wrote:
On Wed, Dec 04, 2013 at 05:10:58PM +0900, HATAYAMA Daisuke wrote:
This patch set is to allow kdump 2nd kernel to wake up multiple CPUs,
a continueing work from:
[PATCH v3 0/2] x86, apic, kdump: Disable BSP if boot cpu is AP
https://lkml.org/lkml
(2013/12/10 23:49), Vivek Goyal wrote:
On Wed, Dec 04, 2013 at 05:10:58PM +0900, HATAYAMA Daisuke wrote:
This patch set is to allow kdump 2nd kernel to wake up multiple CPUs,
a continueing work from:
[PATCH v3 0/2] x86, apic, kdump: Disable BSP if boot cpu is AP
https://lkml.org/lkml
, disabled_cpu_apicid kernel
parameter doesn't work well for apicids of APs.
Fixing the wrong handling of boot_cpu_physical_apicid requires some
reviews and tests beyond some platforms and it could take some
time. The fix here is a kind of workaround to focus on the main topic
of this patch.
Signed-off-by: HATAYAMA
(2013/12/13 1:42), Vivek Goyal wrote:
On Mon, Dec 09, 2013 at 05:06:06PM +0900, HATAYAMA Daisuke wrote:
This is a patch for fixing mmap failure due to fractional page issue.
This patch might be still a bit too large as a single patch and might need to
split.
If you think patch refactoring
(2013/12/13 1:42), Vivek Goyal wrote:
On Mon, Dec 09, 2013 at 05:06:06PM +0900, HATAYAMA Daisuke wrote:
This is a patch for fixing mmap failure due to fractional page issue.
This patch might be still a bit too large as a single patch and might need to
split.
If you think patch refactoring
t;From fd6b0aca54caf7f0b5fd3841ef9e5ff081121ab8 Mon Sep 17 00:00:00 2001
From: HATAYAMA Daisuke
Date: Mon, 9 Dec 2013 09:12:32 +0900
Subject: [PATCH] vmcore: copy fractional pages into buffers in the kdump 2nd
kernel
As Vivek reported in https://lkml.org/lkml/2013/11/13/439, in real
world there's platform that allocates Syst
fd6b0aca54caf7f0b5fd3841ef9e5ff081121ab8 Mon Sep 17 00:00:00 2001
From: HATAYAMA Daisuke d.hatay...@jp.fujitsu.com
Date: Mon, 9 Dec 2013 09:12:32 +0900
Subject: [PATCH] vmcore: copy fractional pages into buffers in the kdump 2nd
kernel
As Vivek reported in https://lkml.org/lkml/2013/11/13/439, in real
world there's platform
(2013/12/04 0:12), Vivek Goyal wrote:
On Tue, Dec 03, 2013 at 02:16:35PM +0900, HATAYAMA Daisuke wrote:
[..]
Even if copying partial pages into the 2nd kernel, we need to use ioremap()
once on them, and I think the ioremap() is exactly similar to
remap_pfn_range() for a single page
7d323b3ce95481be Mon Sep 17 00:00:00 2001
From: HATAYAMA Daisuke
Date: Tue, 3 Dec 2013 09:21:56 +0900
Subject: [PATCH] x86, apic, kexec, Documentation: Add disable_cpu_apicid
kernel parameter
Add disable_cpu_apicid kernel parameter. To use this kernel parameter,
specify an initial APIC ID of
2001
From: HATAYAMA Daisuke d.hatay...@jp.fujitsu.com
Date: Tue, 3 Dec 2013 09:21:56 +0900
Subject: [PATCH] x86, apic, kexec, Documentation: Add disable_cpu_apicid
kernel parameter
Add disable_cpu_apicid kernel parameter. To use this kernel parameter,
specify an initial APIC ID of the corresponding
(2013/12/04 0:12), Vivek Goyal wrote:
On Tue, Dec 03, 2013 at 02:16:35PM +0900, HATAYAMA Daisuke wrote:
[..]
Even if copying partial pages into the 2nd kernel, we need to use ioremap()
once on them, and I think the ioremap() is exactly similar to
remap_pfn_range() for a single page
(2013/12/04 12:08), HATAYAMA Daisuke wrote:
(2013/12/04 0:25), Vivek Goyal wrote:
On Tue, Dec 03, 2013 at 10:32:26AM +0900, HATAYAMA Daisuke wrote:
[..]
diff --git a/Documentation/kernel-parameters.txt
b/Documentation/kernel-parameters.txt
index 50680a5..dd77bec 100644
--- a/Documentation
(2013/12/04 0:25), Vivek Goyal wrote:
On Tue, Dec 03, 2013 at 10:32:26AM +0900, HATAYAMA Daisuke wrote:
[..]
diff --git a/Documentation/kernel-parameters.txt
b/Documentation/kernel-parameters.txt
index 50680a5..dd77bec 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation
are necessary for sanity check, how will
> you prepare such values ?
> (Get them from kernel source and hard-code them in makedumpfile ?)
>
>> Unlike diskdump, we no longer need to care about kernel/hardware level data
>> integrity
>> outside of user-land, but we still c
to deal with them by carefully handling
dump data against makedumpfile's runtime data structure, e.g., buffer size.
Is it OK to consider this is a policy of makedumpfile for data corruption?
--
Thanks.
HATAYAMA, Daisuke
--
To unsubscribe from this list: send the line unsubscribe linux-kernel
(2013/12/04 0:25), Vivek Goyal wrote:
On Tue, Dec 03, 2013 at 10:32:26AM +0900, HATAYAMA Daisuke wrote:
[..]
diff --git a/Documentation/kernel-parameters.txt
b/Documentation/kernel-parameters.txt
index 50680a5..dd77bec 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation
(2013/12/04 12:08), HATAYAMA Daisuke wrote:
(2013/12/04 0:25), Vivek Goyal wrote:
On Tue, Dec 03, 2013 at 10:32:26AM +0900, HATAYAMA Daisuke wrote:
[..]
diff --git a/Documentation/kernel-parameters.txt
b/Documentation/kernel-parameters.txt
index 50680a5..dd77bec 100644
--- a/Documentation
(2013/12/03 10:18), HATAYAMA Daisuke wrote:
(2013/12/03 0:27), Vivek Goyal wrote:
On Thu, Nov 28, 2013 at 05:48:02PM +0900, HATAYAMA Daisuke wrote:
Hello Vivek,
Here is a patch set for mmap failure for /proc/vmcore.
Could you try to use this on the problematic system?
This patch doesn't copy
n case of acpi and MP table
- tested disable_cpu_apicid= to disable both AP and BSP
>From 2cd100eb618a36a82bae2db98f0f4b7d3c1dfe89 Mon Sep 17 00:00:00 2001
From: HATAYAMA Daisuke
Date: Tue, 3 Dec 2013 09:21:56 +0900
Subject: [PATCH] x86, apic, kexec, Documentation: Add disable_cpu_apic
(2013/12/03 0:27), Vivek Goyal wrote:
On Thu, Nov 28, 2013 at 05:48:02PM +0900, HATAYAMA Daisuke wrote:
Hello Vivek,
Here is a patch set for mmap failure for /proc/vmcore.
Could you try to use this on the problematic system?
This patch doesn't copy partial pages to the 2nd kernel, only
(2013/12/03 0:27), Vivek Goyal wrote:
On Thu, Nov 28, 2013 at 05:48:02PM +0900, HATAYAMA Daisuke wrote:
Hello Vivek,
Here is a patch set for mmap failure for /proc/vmcore.
Could you try to use this on the problematic system?
This patch doesn't copy partial pages to the 2nd kernel, only
- tested disable_cpu_apicid=n to disable both AP and BSP
From 2cd100eb618a36a82bae2db98f0f4b7d3c1dfe89 Mon Sep 17 00:00:00 2001
From: HATAYAMA Daisuke d.hatay...@jp.fujitsu.com
Date: Tue, 3 Dec 2013 09:21:56 +0900
Subject: [PATCH] x86, apic, kexec, Documentation: Add disable_cpu_apicid
kernel
(2013/12/03 10:18), HATAYAMA Daisuke wrote:
(2013/12/03 0:27), Vivek Goyal wrote:
On Thu, Nov 28, 2013 at 05:48:02PM +0900, HATAYAMA Daisuke wrote:
Hello Vivek,
Here is a patch set for mmap failure for /proc/vmcore.
Could you try to use this on the problematic system?
This patch doesn't copy
For example, if the corrupted value were a
huge
number, wide range of pages after buddy page would be filtered falsely.
So, actually we should sanity check data in crash dump before using them for
application
level feature. I've picked up order contained in page descriptor, so there
would be other
data used in makedumpfile that are not checked.
Unlike diskdump, we no longer need to care about kernel/hardware level data
integrity
outside of user-land, but we still care about data its own integrity.
On the other hand, if we do it, we might face some difficulty, for example,
hardness of
maintenance or performance bottleneck; it might be the reason why we don't see
sanity
check in makedumpfile now.
--
Thanks.
HATAYAMA, Daisuke
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
rder of
>> huge page is hard in some way, right?
>
> The maximum order will be gotten from HUGETLB_PAGE_ORDER or HPAGE_PMD_ORDER,
> so I don't say it's hard. However, the carrying over method doesn't depend on
> such kernel symbols, so I think it's robuster.
>
Then, it's better
.
>From c8323be2a2972dcb3f252598c39abfa23078 Mon Sep 17 00:00:00 2001
From: HATAYAMA Daisuke
Date: Thu, 28 Nov 2013 14:51:22 +0900
Subject: [PATCH] vmcore: call remap_pfn_range() separately for respective
partial pages
Acording to the report by Vivek in
https://lkml.org/lkml/2013/11/13/
.
From c8323be2a2972dcb3f252598c39abfa23078 Mon Sep 17 00:00:00 2001
From: HATAYAMA Daisuke d.hatay...@jp.fujitsu.com
Date: Thu, 28 Nov 2013 14:51:22 +0900
Subject: [PATCH] vmcore: call remap_pfn_range() separately for respective
partial pages
Acording to the report by Vivek in
https://lkml.org
say it's hard. However, the carrying over method doesn't depend on
such kernel symbols, so I think it's robuster.
Then, it's better to remove check_cyclic_buffer_overrun() and rewrite part of
free page
filtering in __exclude_unnecessary_pages(). Could you do that too?
--
Thanks.
HATAYAMA
,
hardness of
maintenance or performance bottleneck; it might be the reason why we don't see
sanity
check in makedumpfile now.
--
Thanks.
HATAYAMA, Daisuke
--
To unsubscribe from this list: send the line unsubscribe linux-kernel in
the body of a message to majord...@vger.kernel.org
More majordomo
(2013/11/28 16:08), Atsushi Kumagai wrote:
> On 2013/11/22 16:18:20, kexec wrote:
>> (2013/11/07 9:54), HATAYAMA Daisuke wrote:
>>> (2013/11/06 11:21), Atsushi Kumagai wrote:
>>>> (2013/11/06 5:27), Vivek Goyal wrote:
>>>>> On Tue, Nov 0
nly; I don't have any
x86 processor without local apic.
- Add __init annotation to boot_cpu_is_bsp_init().
Test
- tested x86_64 in case of acpi and MP table
- tested disable_cpu_apicid= to disable both AP and BSP
>From a8bd546408ca06d844eda1af9ed1b34d12519eab Mon Sep 17 00:00:00 2001
From
(2013/11/28 0:10), Vivek Goyal wrote:
On Wed, Nov 27, 2013 at 11:00:48AM +0900, HATAYAMA Daisuke wrote:
Add disable_cpu_apicid kernel parameter. To use this kernel parameter,
specify an initial APIC ID of the corresponding CPU you want to
disable.
This is mostly used for the kdump 2nd kernel
(2013/11/28 0:10), Vivek Goyal wrote:
On Wed, Nov 27, 2013 at 11:00:48AM +0900, HATAYAMA Daisuke wrote:
Add disable_cpu_apicid kernel parameter. To use this kernel parameter,
specify an initial APIC ID of the corresponding CPU you want to
disable.
This is mostly used for the kdump 2nd kernel
processor without local apic.
- Add __init annotation to boot_cpu_is_bsp_init().
Test
- tested x86_64 in case of acpi and MP table
- tested disable_cpu_apicid=n to disable both AP and BSP
From a8bd546408ca06d844eda1af9ed1b34d12519eab Mon Sep 17 00:00:00 2001
From: HATAYAMA Daisuke d.hatay
(2013/11/28 16:08), Atsushi Kumagai wrote:
On 2013/11/22 16:18:20, kexec kexec-boun...@lists.infradead.org wrote:
(2013/11/07 9:54), HATAYAMA Daisuke wrote:
(2013/11/06 11:21), Atsushi Kumagai wrote:
(2013/11/06 5:27), Vivek Goyal wrote:
On Tue, Nov 05, 2013 at 09:45:32PM +0800, Jingbai Ma
local apic-present case only; I don't have any
x86 processor without local apic.
- Add __init annotation to boot_cpu_is_bsp_init().
Test
- built with and without CONFIG_LOCAL_APIC
- tested x86_64 in case of acpi and MP table
- tested disable_cpu_apicid= to disable both AP and BSP
---
H
are required. As a
workaround, we directly update boot_cpu_physical_apicid by
read_apic_id().
Signed-off-by: HATAYAMA Daisuke
---
arch/x86/kernel/apic/apic.c | 49 +++
1 file changed, 49 insertions(+)
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86
Add disable_cpu_apicid kernel parameter to disable the CPU with the
specified number of initial APIC ID, mostly used for the kdump 2nd
kernel to disable BSP to wake up multiple CPUs without causing system
reset or hang due to sending INIT from AP to BSP.
Signed-off-by: HATAYAMA Daisuke
Add disable_cpu_apicid kernel parameter to disable the CPU with the
specified number of initial APIC ID, mostly used for the kdump 2nd
kernel to disable BSP to wake up multiple CPUs without causing system
reset or hang due to sending INIT from AP to BSP.
Signed-off-by: HATAYAMA Daisuke d.hatay
; I don't have any
x86 processor without local apic.
- Add __init annotation to boot_cpu_is_bsp_init().
Test
- built with and without CONFIG_LOCAL_APIC
- tested x86_64 in case of acpi and MP table
- tested disable_cpu_apicid=n to disable both AP and BSP
---
HATAYAMA Daisuke (2):
x86
are required. As a
workaround, we directly update boot_cpu_physical_apicid by
read_apic_id().
Signed-off-by: HATAYAMA Daisuke d.hatay...@jp.fujitsu.com
---
arch/x86/kernel/apic/apic.c | 49 +++
1 file changed, 49 insertions(+)
diff --git a/arch/x86/kernel
(2013/11/25 23:41), Vivek Goyal wrote:
On Mon, Nov 25, 2013 at 06:01:37PM +0900, HATAYAMA Daisuke wrote:
[..]
I agree to avoid this issue by fixing makedumpfile as workaround while to
fix kernel is so tough and risky. However, it sounds strange to me to fix
userspace side elaborately
(2013/11/25 17:10), Atsushi Kumagai wrote:
> On 2013/11/22 1:53:14, kexec wrote:
>> On Thu, Nov 21, 2013 at 05:31:46PM +0900, HATAYAMA Daisuke wrote:
>>
>> [..]
>>>> So I think the patch I sent is enough, the policy will be simpler as
>>>> "Don
(2013/11/25 17:10), Atsushi Kumagai wrote:
On 2013/11/22 1:53:14, kexec kexec-boun...@lists.infradead.org wrote:
On Thu, Nov 21, 2013 at 05:31:46PM +0900, HATAYAMA Daisuke wrote:
[..]
So I think the patch I sent is enough, the policy will be simpler as
Don't use mmap() for buggy kernels
(2013/11/25 23:41), Vivek Goyal wrote:
On Mon, Nov 25, 2013 at 06:01:37PM +0900, HATAYAMA Daisuke wrote:
[..]
I agree to avoid this issue by fixing makedumpfile as workaround while to
fix kernel is so tough and risky. However, it sounds strange to me to fix
userspace side elaborately
(2013/11/07 9:54), HATAYAMA Daisuke wrote:
(2013/11/06 11:21), Atsushi Kumagai wrote:
(2013/11/06 5:27), Vivek Goyal wrote:
On Tue, Nov 05, 2013 at 09:45:32PM +0800, Jingbai Ma wrote:
This patch set intend to exclude unnecessary hugepages from vmcore dump file.
This patch requires the kernel
(2013/11/07 9:54), HATAYAMA Daisuke wrote:
(2013/11/06 11:21), Atsushi Kumagai wrote:
(2013/11/06 5:27), Vivek Goyal wrote:
On Tue, Nov 05, 2013 at 09:45:32PM +0800, Jingbai Ma wrote:
This patch set intend to exclude unnecessary hugepages from vmcore dump file.
This patch requires the kernel
Add disable_cpu_apicid kernel parameter to disable the CPU with the
specified number of initial APIC ID, mostly used for the kdump 2nd
kernel to disable BSP to wake up multiple CPUs without causing system
reset or hang due to sending INIT from AP to BSP.
Signed-off-by: HATAYAMA Daisuke
-off-by: HATAYAMA Daisuke
---
arch/x86/kernel/apic/apic.c | 29 +
1 file changed, 29 insertions(+)
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index cff8d71..77fd68d 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
to disable both AP and BSP
---
HATAYAMA Daisuke (3):
x86, apic: add bios_bsp_physical_apicid
x86, apic: Add disable_cpu_apicid kernel parameter
Documentation, x86, apic, kexec: Add disable_cpu_apicid kernel parameter
Documentation/kernel-parameters.txt|9
arch/
even if it exists on some system, e.g. some
cluster system.
Signed-off-by: HATAYAMA Daisuke
---
arch/x86/include/asm/mpspec.h |1 +
arch/x86/kernel/acpi/boot.c|8
arch/x86/kernel/apic/apic.c|9 +
arch/x86/kernel/mpparse.c
and BSP
---
HATAYAMA Daisuke (3):
x86, apic: add bios_bsp_physical_apicid
x86, apic: Add disable_cpu_apicid kernel parameter
Documentation, x86, apic, kexec: Add disable_cpu_apicid kernel parameter
Documentation/kernel-parameters.txt|9
arch/x86/include/asm
even if it exists on some system, e.g. some
cluster system.
Signed-off-by: HATAYAMA Daisuke d.hatay...@jp.fujitsu.com
---
arch/x86/include/asm/mpspec.h |1 +
arch/x86/kernel/acpi/boot.c|8
arch/x86/kernel/apic/apic.c|9 +
arch/x86/kernel
Add disable_cpu_apicid kernel parameter to disable the CPU with the
specified number of initial APIC ID, mostly used for the kdump 2nd
kernel to disable BSP to wake up multiple CPUs without causing system
reset or hang due to sending INIT from AP to BSP.
Signed-off-by: HATAYAMA Daisuke d.hatay
-off-by: HATAYAMA Daisuke d.hatay...@jp.fujitsu.com
---
arch/x86/kernel/apic/apic.c | 29 +
1 file changed, 29 insertions(+)
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index cff8d71..77fd68d 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch
(2013/11/20 14:27), Atsushi Kumagai wrote:
> On 2013/11/19 18:56:21, kexec wrote:
>> (2013/11/18 9:51), Atsushi Kumagai wrote:
>>> (2013/11/15 23:26), Vivek Goyal wrote:
>>>> On Fri, Nov 15, 2013 at 06:41:52PM +0900, HATAYAMA Daisuke wrote:
>>>>
>
(2013/11/18 9:51), Atsushi Kumagai wrote:
> (2013/11/15 23:26), Vivek Goyal wrote:
>> On Fri, Nov 15, 2013 at 06:41:52PM +0900, HATAYAMA Daisuke wrote:
>>
>> [..]
>>>> Given the fact that hpa does not like fixing it in kernel. We are left
>>>>
00 00 00 00 01 00 00 00 ...@
00A0: 00 00 00 00 00 00 00 00
Signed-off-by: HATAYAMA Daisuke
---
drivers/acpi/sysfs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/acpi/sysfs.c b/drivers/acpi/sysfs.c
index 05306a5
00 00 00 00 01 00 00 00 ...@
00A0: 00 00 00 00 00 00 00 00
Signed-off-by: HATAYAMA Daisuke d.hatay...@jp.fujitsu.com
---
drivers/acpi/sysfs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/acpi/sysfs.c b/drivers/acpi
(2013/11/18 9:51), Atsushi Kumagai wrote:
(2013/11/15 23:26), Vivek Goyal wrote:
On Fri, Nov 15, 2013 at 06:41:52PM +0900, HATAYAMA Daisuke wrote:
[..]
Given the fact that hpa does not like fixing it in kernel. We are left
with option of fixing it in following places.
- Drop partial pages
(2013/11/20 14:27), Atsushi Kumagai wrote:
On 2013/11/19 18:56:21, kexec kexec-boun...@lists.infradead.org wrote:
(2013/11/18 9:51), Atsushi Kumagai wrote:
(2013/11/15 23:26), Vivek Goyal wrote:
On Fri, Nov 15, 2013 at 06:41:52PM +0900, HATAYAMA Daisuke wrote:
[..]
Given the fact that hpa
(2013/11/15 0:13), Vivek Goyal wrote:
On Thu, Nov 14, 2013 at 07:31:37PM +0900, HATAYAMA Daisuke wrote:
[..]
BTW, I previously found a part of makedumpfile that truncates the first and
last pages if they are not aligned in page size. Discussing with Kumagai-san,
the truncation is performed
(2013/11/15 0:13), Vivek Goyal wrote:
On Thu, Nov 14, 2013 at 07:31:37PM +0900, HATAYAMA Daisuke wrote:
[..]
BTW, I previously found a part of makedumpfile that truncates the first and
last pages if they are not aligned in page size. Discussing with Kumagai-san,
the truncation is performed
Hello HPA,
I have another question relevant to http://lkml.org/lkml/2013/11/12/311.
(2013/11/12 18:51), HATAYAMA Daisuke wrote:
@@ -2589,3 +2593,14 @@ static int __init lapic_insert_resource(void)
* that is using request_resource
*/
late_initcall(lapic_insert_resource);
+
+void __init
(2013/11/12 19:44), Borislav Petkov wrote:
On Tue, Nov 12, 2013 at 06:51:58PM +0900, HATAYAMA Daisuke wrote:
Add disable_cpu_apicid kernel parameter. To use this kernel parameter,
specify an initial APIC ID of the corresponding CPU you want to
disable.
This is mostly used for the kdump 2nd
above
commit or not since makedumpfile fails on some kind of system as you reported.
--
Thanks.
HATAYAMA, Daisuke
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.o
or not to revert the above
commit or not since makedumpfile fails on some kind of system as you reported.
--
Thanks.
HATAYAMA, Daisuke
--
To unsubscribe from this list: send the line unsubscribe linux-kernel in
the body of a message to majord...@vger.kernel.org
More majordomo info at http
(2013/11/12 19:44), Borislav Petkov wrote:
On Tue, Nov 12, 2013 at 06:51:58PM +0900, HATAYAMA Daisuke wrote:
Add disable_cpu_apicid kernel parameter. To use this kernel parameter,
specify an initial APIC ID of the corresponding CPU you want to
disable.
This is mostly used for the kdump 2nd
Hello HPA,
I have another question relevant to http://lkml.org/lkml/2013/11/12/311.
(2013/11/12 18:51), HATAYAMA Daisuke wrote:
cut
@@ -2589,3 +2593,14 @@ static int __init lapic_insert_resource(void)
* that is using request_resource
*/
late_initcall(lapic_insert_resource);
+
+void
(2013/11/12 4:54), H. Peter Anvin wrote:
On 10/12/2013 10:42 AM, Ingo Molnar wrote:
* H. Peter Anvin wrote:
On 10/09/2013 04:16 PM, tip-bot for HATAYAMA Daisuke wrote:
Commit-ID: 1d79e607332d67d9132c176d99b5e7fabe1b6b7f
Gitweb: http://git.kernel.org/tip
(2013/11/12 9:40), HATAYAMA Daisuke wrote:
(2013/11/12 1:52), Vivek Goyal wrote:
On Mon, Nov 11, 2013 at 11:52:30AM +0900, HATAYAMA Daisuke wrote:
[..]
Looking at my past investigation, kernel/mpparse.c, mm/amdtopology.c and
platform/visws/visws_quirks.c assumes that boot_cpu_physical_apicid
-off-by: HATAYAMA Daisuke
---
arch/x86/kernel/apic/apic.c | 29 +
1 file changed, 29 insertions(+)
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index b60ad92..075bf23 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
ve any
x86 processor without local apic.
- Add __init annotation to boot_cpu_is_bsp_init().
Test
- built with and without CONFIG_LOCAL_APIC, CONFIG_SMP and CONFIG_X86_UP_APIC.
- tested x86_64 in case of acpi and MP table
- tested disable_cpu_apicid= to disable both AP and BSP
---
HATAYAMA Daisuke (3
Add disable_cpu_apicid kernel parameter to disable the CPU with the
specified number of initial APIC ID, mostly used for the kdump 2nd
kernel to disable BSP to wake up multiple CPUs without causing system
reset or hang due to sending INIT from AP to BSP.
Signed-off-by: HATAYAMA Daisuke
from MP
table or MADT. This covers the above MP table related codes with no
functional change.
Initialize boot_cpu_data.initial_apicid in early_identify_cpu() since
currently it is initialized after logical cpu number assignment is
performed.
Signed-off-by: HATAYAMA Daisuke
---
arch/x86/include
from MP
table or MADT. This covers the above MP table related codes with no
functional change.
Initialize boot_cpu_data.initial_apicid in early_identify_cpu() since
currently it is initialized after logical cpu number assignment is
performed.
Signed-off-by: HATAYAMA Daisuke d.hatay
without local apic.
- Add __init annotation to boot_cpu_is_bsp_init().
Test
- built with and without CONFIG_LOCAL_APIC, CONFIG_SMP and CONFIG_X86_UP_APIC.
- tested x86_64 in case of acpi and MP table
- tested disable_cpu_apicid=n to disable both AP and BSP
---
HATAYAMA Daisuke (3):
x86
Add disable_cpu_apicid kernel parameter to disable the CPU with the
specified number of initial APIC ID, mostly used for the kdump 2nd
kernel to disable BSP to wake up multiple CPUs without causing system
reset or hang due to sending INIT from AP to BSP.
Signed-off-by: HATAYAMA Daisuke d.hatay
-off-by: HATAYAMA Daisuke d.hatay...@jp.fujitsu.com
---
arch/x86/kernel/apic/apic.c | 29 +
1 file changed, 29 insertions(+)
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index b60ad92..075bf23 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch
(2013/11/12 9:40), HATAYAMA Daisuke wrote:
(2013/11/12 1:52), Vivek Goyal wrote:
On Mon, Nov 11, 2013 at 11:52:30AM +0900, HATAYAMA Daisuke wrote:
[..]
Looking at my past investigation, kernel/mpparse.c, mm/amdtopology.c and
platform/visws/visws_quirks.c assumes that boot_cpu_physical_apicid
(2013/11/12 4:54), H. Peter Anvin wrote:
On 10/12/2013 10:42 AM, Ingo Molnar wrote:
* H. Peter Anvin h...@zytor.com wrote:
On 10/09/2013 04:16 PM, tip-bot for HATAYAMA Daisuke wrote:
Commit-ID: 1d79e607332d67d9132c176d99b5e7fabe1b6b7f
Gitweb: http://git.kernel.org/tip
(2013/11/12 1:52), Vivek Goyal wrote:
On Mon, Nov 11, 2013 at 11:52:30AM +0900, HATAYAMA Daisuke wrote:
[..]
Looking at my past investigation, kernel/mpparse.c, mm/amdtopology.c and
platform/visws/visws_quirks.c assumes that boot_cpu_physical_apicid
has initial apicid of the BSP
(2013/11/12 1:52), Vivek Goyal wrote:
On Mon, Nov 11, 2013 at 11:52:30AM +0900, HATAYAMA Daisuke wrote:
[..]
Looking at my past investigation, kernel/mpparse.c, mm/amdtopology.c and
platform/visws/visws_quirks.c assumes that boot_cpu_physical_apicid
has initial apicid of the BSP
(2013/11/07 4:02), jerry.hoem...@hp.com wrote:
On Wed, Oct 23, 2013 at 12:01:18AM +0900, HATAYAMA Daisuke wrote:
This patch set is to allow kdump 2nd kernel to wake up multiple CPUs
even if 1st kernel crashs on some AP, a continueing work from:
[PATCH v3 0/2] x86, apic, kdump: Disable BSP
(2013/11/09 1:08), Vivek Goyal wrote:
On Wed, Oct 23, 2013 at 12:01:24AM +0900, HATAYAMA Daisuke wrote:
If crash occurs on some AP, then kdump 2nd kernel is booted up on the
AP. Therefore, it is not always correct that the CPU that is currently
booting up the kernel is BSP. It's wrong
(2013/11/09 1:08), Vivek Goyal wrote:
On Wed, Oct 23, 2013 at 12:01:24AM +0900, HATAYAMA Daisuke wrote:
If crash occurs on some AP, then kdump 2nd kernel is booted up on the
AP. Therefore, it is not always correct that the CPU that is currently
booting up the kernel is BSP. It's wrong
(2013/11/07 4:02), jerry.hoem...@hp.com wrote:
On Wed, Oct 23, 2013 at 12:01:18AM +0900, HATAYAMA Daisuke wrote:
This patch set is to allow kdump 2nd kernel to wake up multiple CPUs
even if 1st kernel crashs on some AP, a continueing work from:
[PATCH v3 0/2] x86, apic, kdump: Disable BSP
magai-san, please correct me, if I'm wrong.
>
> Yes, my patch treats all allocated hugetlbfs pages as user pages,
> doesn't distinguish whether the pages are actually used or not.
> I made so because I guess it's enough for almost all users.
>
> We can introduce new dump level after it's needed actually,
> but I don't think now is the time. To introduce it without
> demand will make this tool just more complex.
>
Typically, users would allocate huge pages as much as actually they use only,
in order not to waste system memory. So, this design seems reasonable.
--
Thanks.
HATAYAMA, Daisuke
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
rrupts can be broken. The other cpus except for the
crashing cpu are no longer guaranteed to be running sanely. Migrating cpu
from the crashing cpu to cpu0 reduces reliability of kdump.
--
Thanks.
HATAYAMA, Daisuke
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
t
. The other cpus except for the
crashing cpu are no longer guaranteed to be running sanely. Migrating cpu
from the crashing cpu to cpu0 reduces reliability of kdump.
--
Thanks.
HATAYAMA, Daisuke
--
To unsubscribe from this list: send the line unsubscribe linux-kernel in
the body of a message
as actually they use only,
in order not to waste system memory. So, this design seems reasonable.
--
Thanks.
HATAYAMA, Daisuke
--
To unsubscribe from this list: send the line unsubscribe linux-kernel in
the body of a message to majord...@vger.kernel.org
More majordomo info at http
n info->bufsize_cyclic with larger one in
check_cyclic_buffer_overrun().
--
Thanks.
HATAYAMA, Daisuke
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Commit-ID: a477c8594bee3bff639739c48258a8c737ab721e
Gitweb: http://git.kernel.org/tip/a477c8594bee3bff639739c48258a8c737ab721e
Author: HATAYAMA Daisuke
AuthorDate: Tue, 5 Nov 2013 02:15:48 +0900
Committer: Ingo Molnar
CommitDate: Wed, 6 Nov 2013 08:13:56 +0100
x86/cpu: Always print
Commit-ID: a477c8594bee3bff639739c48258a8c737ab721e
Gitweb: http://git.kernel.org/tip/a477c8594bee3bff639739c48258a8c737ab721e
Author: HATAYAMA Daisuke d.hatay...@jp.fujitsu.com
AuthorDate: Tue, 5 Nov 2013 02:15:48 +0900
Committer: Ingo Molnar mi...@kernel.org
CommitDate: Wed, 6 Nov 2013
to the current cyclic range.
If maximum value of compound_order is larger than maximum value of
CONFIG_FORCE_MAX_ZONEORDER, which makedumpfile obtains by
ARRAY_LENGTH(zone.free_area),
it's necessary to align info-bufsize_cyclic with larger one in
check_cyclic_buffer_overrun().
--
Thanks.
HATAYAMA
, on which guest, MP
information is not displayed in /proc/cpuinfo.
I saw this situation on VMWare guest environment, too.
To fix this issue, this patch simply removes the condition because
this information is useful even if there's only 1 thread.
Signed-off-by: HATAYAMA Daisuke
---
arch/x86/kernel/cpu
, on which guest, MP
information is not displayed in /proc/cpuinfo.
I saw this situation on VMWare guest environment, too.
To fix this issue, this patch simply removes the condition because
this information is useful even if there's only 1 thread.
Signed-off-by: HATAYAMA Daisuke d.hatay...@jp.fujitsu.com
only. I'd like anyone to post patches
if necessary...
BTW, what's the status of this patch set? I've redesigned this so as to
be done with kernel parameter in order not to depend on platform specific
BIOS table. Due to the redesign, I think now ACK is needed again.
--
Thanks.
HATAYAMA, Daisuke
only. I'd like anyone to post patches
if necessary...
BTW, what's the status of this patch set? I've redesigned this so as to
be done with kernel parameter in order not to depend on platform specific
BIOS table. Due to the redesign, I think now ACK is needed again.
--
Thanks.
HATAYAMA, Daisuke
(2013/10/31 9:58), jerry.hoem...@hp.com wrote:
On Wed, Oct 23, 2013 at 09:05:06AM +0900, HATAYAMA Daisuke wrote:
- Rebased on top of v3.12-rc6
- Basic design has been changed. Now users need to figure out initial
APIC ID of BSP in the 1st kernel and configures kernel parameter
101 - 200 of 718 matches
Mail list logo
