Hello Aditya,
On 28/05/24 17:03, Aditya Gupta wrote:
Hello sourabh,
On Wed, May 22, 2024 at 06:43:51PM GMT, Sourabh Jain wrote:
Kernel commit 79365026f869 (crash: add a new kexec flag for hotplug
support) has introduced a new kexec flag to generalize hotplug support.
The newly introduced
Update the man page and --help option to make the description of the
--hotplug option easier to understand.
Cc: Aditya Gupta
Cc: Baoquan He
Cc: Coiby Xu
Cc: Hari Bathini
Cc: Mahesh Salgaonkar
Signed-off-by: Sourabh Jain
---
kexec/kexec.8 | 8
kexec/kexec.c | 3 ++-
2 files changed
upta
Cc: Baoquan He
Cc: Coiby Xu
Cc: Hari Bathini
Cc: Mahesh Salgaonkar
Signed-off-by: Sourabh Jain
---
kexec/arch/ppc64/crashdump-ppc64.c | 16 ++-
kexec/arch/ppc64/fdt.c | 200 +++-
kexec/arch/ppc64/include/arch/fdt.h | 2 +-
kexec/arch/ppc64/kexe
with the KEXEC_LIVE_UPDATE update flag, it is removed.
Cc: Aditya Gupta
Cc: Baoquan He
Cc: Coiby Xu
Cc: Hari Bathini
Cc: Mahesh Salgaonkar
Signed-off-by: Sourabh Jain
---
kexec/arch/arm/kexec-arm.c | 5 +
kexec/arch/arm64/kexec-arm64.c | 4
kexec/arch/cris/kexec-cris.c
()` and
`arch_crash_handle_hotplug_event()` to accept the `memory_notify` object
as an argument from crash memory hotplug notifier.
Since no such object is available in the case of CPU hotplug event, the
crash CPU hotplug notifier `crash_cpuhp_online()` passes NULL to the
crash hotplug handler.
Signed-off-by: Sourabh Jain
Acked
Zohar
Cc: Naveen N Rao
Cc: Oscar Salvador
Cc: Stephen Rothwell
Cc: Thomas Gleixner
Cc: Valentin Schneider
Cc: Vivek Goyal
Cc: kexec@lists.infradead.org
Cc: x...@kernel.org
Sourabh Jain (6):
crash: forward memory_notify arg to arch crash hotplug handler
crash: add a new kexec flag for hotplug
odate additional memory ranges and the
elfcorehdr segment is not considered for SHA calculation, making it safe
to update.
The changes related to this feature are kept under the CRASH_HOTPLUG
config, and it is enabled by default.
Signed-off-by: Sourabh Jain
Acked-by: Hari Bathini
Cc: Akhil Raj
C
nabled by default.
Signed-off-by: Sourabh Jain
Acked-by: Hari Bathini
Cc: Akhil Raj
Cc: Andrew Morton
Cc: Aneesh Kumar K.V
Cc: Baoquan He
Cc: Borislav Petkov (AMD)
Cc: Boris Ostrovsky
Cc: Christophe Leroy
Cc: Dave Hansen
Cc: Dave Young
Cc: David Hildenbrand
Cc: Greg Kroah-Hartman
Cc: Laurent
ng the x86 crash hotplug support in line with the above points,
the following changes have been made:
- Introduce the arch_crash_hotplug_support function to process kexec
flags and determine crash hotplug support
- Remove the arch_crash_hotplug_[cpu|memory]_support functions
Signed-off-by: So
lls.
No functional changes are intended.
Signed-off-by: Sourabh Jain
Acked-by: Hari Bathini
Cc: Akhil Raj
Cc: Andrew Morton
Cc: Aneesh Kumar K.V
Cc: Baoquan He
Cc: Borislav Petkov (AMD)
Cc: Boris Ostrovsky
Cc: Christophe Leroy
Cc: Dave Hansen
Cc: Dave Young
Cc: David Hildenbrand
Cc: G
red to be public. Mark them as
static and removed them from kexec_ranges.h header file.
Finally, remove the CONFIG_KEXEC_FILE build dependency for range.c
because it is required for other config, such as CONFIG_CRASH_DUMP.
No functional changes are intended.
Signed-off-by: Sourabh Jain
Acked-by: H
odate additional memory ranges and the
elfcorehdr segment is not considered for SHA calculation, making it safe
to update.
The changes related to this feature are kept under the CRASH_HOTPLUG
config, and it is enabled by default.
Signed-off-by: Sourabh Jain
Acked-by: Hari Bathini
Cc: Akhil Raj
C
ng the x86 crash hotplug support in line with the above points,
the following changes have been made:
- Introduce the arch_crash_hotplug_support function to process kexec
flags and determine crash hotplug support
- Remove the arch_crash_hotplug_[cpu|memory]_support functions
Signed-off-by: So
red to be public. Mark them as
static and removed them from kexec_ranges.h header file.
Finally, remove the CONFIG_KEXEC_FILE build dependency for range.c
because it is required for other config, such as CONFIG_CRASH_DUMP.
No functional changes are intended.
Signed-off-by: Sourabh Jain
Acked-by: H
()` and
`arch_crash_handle_hotplug_event()` to accept the `memory_notify` object
as an argument from crash memory hotplug notifier.
Since no such object is available in the case of CPU hotplug event, the
crash CPU hotplug notifier `crash_cpuhp_online()` passes NULL to the
crash hotplug handler.
Signed-off-by: Sourabh Jain
Acked
thini
Cc: Laurent Dufour
Cc: Mahesh Salgaonkar
Cc: Michael Ellerman
Cc: Mimi Zohar
Cc: Naveen N Rao
Cc: Oscar Salvador
Cc: Thomas Gleixner
Cc: Valentin Schneider
Cc: Vivek Goyal
Cc: kexec@lists.infradead.org
Cc: x...@kernel.org
Sourabh Jain (6):
crash: forward memory_notify arg to arch cra
nabled by default.
Signed-off-by: Sourabh Jain
Acked-by: Hari Bathini
Cc: Akhil Raj
Cc: Andrew Morton
Cc: Aneesh Kumar K.V
Cc: Baoquan He
Cc: Borislav Petkov (AMD)
Cc: Boris Ostrovsky
Cc: Christophe Leroy
Cc: Dave Hansen
Cc: Dave Young
Cc: David Hildenbrand
Cc: Greg Kroah-Hartman
Cc: Laurent
lls.
No functional changes are intended.
Signed-off-by: Sourabh Jain
Acked-by: Hari Bathini
Cc: Akhil Raj
Cc: Andrew Morton
Cc: Aneesh Kumar K.V
Cc: Baoquan He
Cc: Borislav Petkov (AMD)
Cc: Boris Ostrovsky
Cc: Christophe Leroy
Cc: Dave Hansen
Cc: Dave Young
Cc: David Hildenbrand
Cc: G
On 02/03/24 18:49, Hari Bathini wrote:
On 26/02/24 2:11 pm, Sourabh Jain wrote:
Extend the arch crash hotplug handler, as introduced by the patch title
("powerpc: add crash CPU hotplug support"), to also support memory
add/remove events.
Elfcorehdr describes the memory of the cr
Hello Hari,
On 02/03/24 18:47, Hari Bathini wrote:
On 26/02/24 2:11 pm, Sourabh Jain wrote:
Commit a72bbec70da2 ("crash: hotplug support for kexec_load()")
introduced a new kexec flag, `KEXEC_UPDATE_ELFCOREHDR`. Kexec tool uses
this flag to indicate to the kernel that it is safe
Hello Baoquan,
On 29/02/24 19:21, Baoquan He wrote:
Hi Sourabh,
On 02/26/24 at 02:11pm, Sourabh Jain wrote:
Commit 247262756121 ("crash: add generic infrastructure for crash
hotplug support") added a generic infrastructure that allows
architectures to selectively update the k
Hello
On 29/02/24 12:58, Baoquan He wrote:
On 02/26/24 at 02:11pm, Sourabh Jain wrote:
..snip...
diff --git a/kernel/crash_core.c b/kernel/crash_core.c
index 70fa8111a9d6..630c4fd7ea39 100644
--- a/kernel/crash_core.c
+++ b/kernel/crash_core.c
@@ -496,7 +496,7 @@ static DEFINE_MUTEX
On 29/02/24 13:41, Baoquan He wrote:
On 02/26/24 at 02:11pm, Sourabh Jain wrote:
Move the following functions form kexec/{file_load_64.c => ranges.c} and
make them public so that components other KEXEC_FILE can also
Hello Baoquan,
On 29/02/24 12:58, Baoquan He wrote:
On 02/26/24 at 02:11pm, Sourabh Jain wrote:
..snip...
diff --git a/kernel/crash_core.c b/kernel/crash_core.c
index 70fa8111a9d6..630c4fd7ea39 100644
--- a/kernel/crash_core.c
+++ b/kernel/crash_core.c
@@ -496,7 +496,7 @@ static
On 29/02/24 11:26, Baoquan He wrote:
On 02/29/24 at 10:35am, Sourabh Jain wrote:
Hello Baoquan,
Do you have any comments or suggestions for this patch series, especially
for this patch?
Have applied this series and reviewing, will ack or add comment if any
concern. Thanks.
Thanks
Hello Baoquan,
Do you have any comments or suggestions for this patch series,
especially for this patch?
Thanks,
Sourabh
On 26/02/24 14:11, Sourabh Jain wrote:
Commit a72bbec70da2 ("crash: hotplug support for kexec_load()")
introduced a new kexec flag, `KEXEC_UPDATE_ELFCOREHDR`.
odate additional memory ranges and the
elfcorehdr segment is not considered for SHA calculation, making it safe
to update.
The changes related to this feature are kept under the CRASH_HOTPLUG
config, and it is enabled by default.
Signed-off-by: Sourabh Jain
Cc: Akhil Raj
Cc: Andrew Morton
Cc:
nabled by default.
Signed-off-by: Sourabh Jain
Cc: Akhil Raj
Cc: Andrew Morton
Cc: Aneesh Kumar K.V
Cc: Baoquan He
Cc: Borislav Petkov (AMD)
Cc: Boris Ostrovsky
Cc: Christophe Leroy
Cc: Dave Hansen
Cc: Dave Young
Cc: David Hildenbrand
Cc: Greg Kroah-Hartman
Cc: Hari Bathini
Cc: Laurent Duf
red to be public. Mark them as
static and removed them from kexec_ranges.h header file.
Finally, remove the CONFIG_KEXEC_FILE build dependency for range.c
because it is required for other config, such as CONFIG_CRASH_DUMP.
No functional changes are intended.
Signed-off-by: Sourabh Jain
Cc: Akhil Raj
lls.
No functional changes are intended.
Signed-off-by: Sourabh Jain
Cc: Akhil Raj
Cc: Andrew Morton
Cc: Aneesh Kumar K.V
Cc: Baoquan He
Cc: Borislav Petkov (AMD)
Cc: Boris Ostrovsky
Cc: Christophe Leroy
Cc: Dave Hansen
Cc: Dave Young
Cc: David Hildenbrand
Cc: Greg Kroah-Hartman
Cc: H
_file_load system calls. This
simplifies kernel checks to identify hotplug support for the currently
loaded kdump image by just examining the value of @hotplug_support.
Signed-off-by: Sourabh Jain
Cc: Akhil Raj
Cc: Andrew Morton
Cc: Aneesh Kumar K.V
Cc: Baoquan He
Cc: Borislav Petkov (AMD)
MD)
Cc: Boris Ostrovsky
Cc: Christophe Leroy
Cc: Dave Hansen
Cc: Dave Young
Cc: David Hildenbrand
Cc: Greg Kroah-Hartman
Cc: Hari Bathini
Cc: Laurent Dufour
Cc: Mahesh Salgaonkar
Cc: Michael Ellerman
Cc: Mimi Zohar
Cc: Naveen N Rao
Cc: Oscar Salvador
Cc: Thomas Gleixner
Cc: Valentin Schn
()` and
`arch_crash_handle_hotplug_event()` to accept the `memory_notify` object
as an argument from crash memory hotplug notifier.
Since no such object is available in the case of CPU hotplug event, the
crash CPU hotplug notifier `crash_cpuhp_online()` passes NULL to the
crash hotplug handler.
Signed-off-by: Sourabh Jain
Acked
Hello Hari,
Build failure detected.
On 13/02/24 17:01, Hari Bathini wrote:
Remove CONFIG_CRASH_DUMP dependency on CONFIG_KEXEC. CONFIG_KEXEC_CORE
was used at places where CONFIG_CRASH_DUMP or CONFIG_CRASH_RESERVE was
appropriate. Replace with appropriate #ifdefs to support CONFIG_KEXEC
and
On 22/02/24 09:28, Baoquan He wrote:
On 02/22/24 at 09:01am, Sourabh Jain wrote:
Hello Baoquan,
There are a lot of code movements introduced by your patch series, 'Split
crash out from kexec and clean up related config items.'
https://lore.kernel.org/all
of the above patch series?
Thanks,
Sourabh Jain
On 17/02/24 13:44, Sourabh Jain wrote:
Commit a72bbec70da2 ("crash: hotplug support for kexec_load()")
introduced a new kexec flag, `KEXEC_UPDATE_ELFCOREHDR`. Kexec tool uses
this flag to indicate to the kernel that it is safe to modify the
Hello Baoquan,
On 19/01/24 20:22, Baoquan He wrote:
Now move the relevant codes into separate files:
kernel/crash_reserve.c, include/linux/crash_reserve.h.
And add config item CRASH_RESERVE to control its enabling.
Feels like this patch is more about vmcore_info.[c|h] and CONFIG_VMCORE_INFO
Hello Baoquan,
Thank you for reorganizing the kexec and kdump code with a well-defined
configuration structure.
While reviewing the patch series, I noticed a few typos.
On 19/01/24 20:22, Baoquan He wrote:
Both kdump and fa_dump of ppc rely on crashkernel reservation. Move the
relevant codes
odate additional memory ranges and the
elfcorehdr segment is not considered for SHA calculation, making it safe
to update.
The changes related to this feature are kept under the CRASH_HOTPLUG
config, and it is enabled by default.
Signed-off-by: Sourabh Jain
Cc: Akhil Raj
Cc: Andrew Morton
Cc:
nabled by default.
Signed-off-by: Sourabh Jain
Cc: Akhil Raj
Cc: Andrew Morton
Cc: Aneesh Kumar K.V
Cc: Baoquan He
Cc: Borislav Petkov (AMD)
Cc: Boris Ostrovsky
Cc: Christophe Leroy
Cc: Dave Hansen
Cc: Dave Young
Cc: David Hildenbrand
Cc: Greg Kroah-Hartman
Cc: Hari Bathini
Cc: Laurent Duf
, these functions are utilized for in-kernel updates
to kdump image during CPU/Memory hotplug or online/offline events for
both kexec_load and kexec_file_load syscalls.
There is no intended functional change.
Signed-off-by: Sourabh Jain
Reviewed-by: Laurent Dufour
Cc: Akhil Raj
Cc: Andrew Morton
Cc
_file_load system calls. This
simplifies kernel checks to identify hotplug support for the currently
loaded kdump image by just examining the value of @hotplug_support.
Signed-off-by: Sourabh Jain
Cc: Akhil Raj
Cc: Andrew Morton
Cc: Aneesh Kumar K.V
Cc: Baoquan He
Cc: Borislav Petkov (AMD)
ichael Ellerman
Cc: Mimi Zohar
Cc: Naveen N Rao
Cc: Oscar Salvador
Cc: Thomas Gleixner
Cc: Valentin Schneider
Cc: Vivek Goyal
Cc: kexec@lists.infradead.org
Cc: x...@kernel.org
Sourabh Jain (5):
crash: forward memory_notify arg to arch crash hotplug handler
crash: add a new kexec flag fo
()` and
`arch_crash_handle_hotplug_event()` to accept the `memory_notify` object
as an argument from crash memory hotplug notifier.
Since no such object is available in the case of CPU hotplug event, the
crash CPU hotplug notifier `crash_cpuhp_online()` passes NULL to the
crash hotplug handler.
Signed-off-by: Sourabh Jain
Acked
On 13/02/24 08:51, Baoquan He wrote:
On 02/12/24 at 07:27pm, Sourabh Jain wrote:
Hello Baoquan,
On 05/02/24 08:40, Baoquan He wrote:
Hi Sourabh,
..
diff --git a/include/linux/kexec.h b/include/linux/kexec.h
index 802052d9c64b..7880d74dc5c4 100644
--- a/include/linux/kexec.h
+++ b
Hello Baoquan,
On 05/02/24 08:40, Baoquan He wrote:
Hi Sourabh,
Thanks for the great work. There are some concerns, please see inline
comments.
Thank you :)
On 01/11/24 at 04:21pm, Sourabh Jain wrote:
..
Now, if the kexec tool sends KEXEC_CRASH_HOTPLUG_SUPPORT kexec flag
On 05/02/24 08:41, Baoquan He wrote:
On 01/11/24 at 04:21pm, Sourabh Jain wrote:
In the event of memory hotplug or online/offline events, the crash
memory hotplug notifier `crash_memhp_notifier()` receives a
`memory_notify` object but doesn't forward that object to the
generic
On 23/01/24 15:52, Hari Bathini wrote:
On 11/01/24 4:21 pm, Sourabh Jain wrote:
Extend the arch crash hotplug handler, as introduced by the patch title
("powerpc: add crash CPU hotplug support"), to also support memory
add/remove events.
Elfcorehdr describes the memory of the cr
()` and
`arch_crash_handle_hotplug_event()` to accept the `memory_notify` object
as an argument from crash memory hotplug notifier.
Since no such object is available in the case of CPU hotplug event, the
crash CPU hotplug notifier `crash_cpuhp_online()` passes NULL to the
crash hotplug handler.
Signed-off-by: Sourabh Jain
Cc: Akhil
Thomas Gleixner
Cc: Valentin Schneider
Cc: Vivek Goyal
Cc: kexec@lists.infradead.org
Cc: x...@kernel.org
Sourabh Jain (5):
crash: forward memory_notify arg to arch crash hotplug handler
crash: add a new kexec flag for hotplug support
powerpc/kexec: turn some static helper functions public
odate additional memory ranges and the
elfcorehdr segment is not considered for SHA calculation, making it safe
to update.
The changes related to this feature are kept under the CRASH_HOTPLUG
config, and it is enabled by default.
Signed-off-by: Sourabh Jain
Cc: Akhil Raj
Cc: Andrew Morton
Cc:
, these functions are utilized for in-kernel updates
to kdump image during CPU/Memory hotplug or online/offline events for
both kexec_load and kexec_file_load syscalls.
There is no intended functional change.
Signed-off-by: Sourabh Jain
Reviewed-by: Laurent Dufour
Cc: Akhil Raj
Cc: Andrew Morton
Cc
nabled by default.
Signed-off-by: Sourabh Jain
Cc: Akhil Raj
Cc: Andrew Morton
Cc: Aneesh Kumar K.V
Cc: Baoquan He
Cc: Borislav Petkov (AMD)
Cc: Boris Ostrovsky
Cc: Christophe Leroy
Cc: Dave Hansen
Cc: Dave Young
Cc: David Hildenbrand
Cc: Greg Kroah-Hartman
Cc: Hari Bathini
Cc: Laurent Duf
_file_load system calls. This
simplifies kernel checks to identify hotplug support for the currently
loaded kdump image by just examining the value of @hotplug_support.
Signed-off-by: Sourabh Jain
Cc: Akhil Raj
Cc: Andrew Morton
Cc: Aneesh Kumar K.V
Cc: Baoquan He
Cc: Borislav Petkov (AMD)
Hello Baoquan,
While replying to this email earlier, I mistakenly pressed "Reply to List"
instead of "Reply to All." Consequently, my response was sent only to
powerpc
mailing list.
On 17/12/23 06:29, Baoquan He wrote:
On 12/17/23 at 12:27am, Sourabh Jain wrote:
On 16/
On 16/12/23 15:11, Baoquan He wrote:
On 12/15/23 at 12:17pm, Sourabh Jain wrote:
..
diff --git a/include/linux/kexec.h b/include/linux/kexec.h
index 0f6ea35879ee..bcedb7625b1f 100644
--- a/include/linux/kexec.h
+++ b/include/linux/kexec.h
@@ -319,6 +319,7 @@ struct kimage {
#ifdef
Hello Baoquan,
On 15/12/23 07:58, Baoquan He wrote:
On 12/11/23 at 02:00pm, Sourabh Jain wrote:
The commit a72bbec70da2 ("crash: hotplug support for kexec_load()")
introduced a new kexec flag, `KEXEC_UPDATE_ELFCOREHDR`. Kexec tool uses
this flag to indicate kernel that it is safe
On 15/12/23 06:53, Baoquan He wrote:
On 12/11/23 at 02:00pm, Sourabh Jain wrote:
..
diff --git a/arch/powerpc/include/asm/kexec_ranges.h
b/arch/powerpc/include/asm/kexec_ranges.h
index f83866a19e87..802abf580cf0 100644
--- a/arch/powerpc/include/asm/kexec_ranges.h
+++ b/arch/powerpc
Hello Baoquan,
On 14/12/23 19:43, Baoquan He wrote:
On 12/11/23 at 02:00pm, Sourabh Jain wrote:
Architectures' specific functions `arch_crash_hotplug_cpu_support()` and
`arch_crash_hotplug_memory_support()` advertise the kernel's capability
to update the kdump image on CPU and Memory hotplug
nabled by default.
Signed-off-by: Sourabh Jain
Cc: Akhil Raj
Cc: Andrew Morton
Cc: Aneesh Kumar K.V
Cc: Baoquan He
Cc: Borislav Petkov (AMD)
Cc: Boris Ostrovsky
Cc: Christophe Leroy
Cc: Dave Hansen
Cc: Dave Young
Cc: David Hildenbrand
Cc: Eric DeVolder
Cc: Greg Kroah-Hartman
Cc: Hari B
s related to this feature are kept under the CRASH_HOTPLUG
config, and it is enabled by default.
Signed-off-by: Sourabh Jain
Cc: Akhil Raj
Cc: Andrew Morton
Cc: Aneesh Kumar K.V
Cc: Baoquan He
Cc: Borislav Petkov (AMD)
Cc: Boris Ostrovsky
Cc: Christophe Leroy
Cc: Dave Hansen
Cc: Dave Young
Cc: David
Signed-off-by: Sourabh Jain
Cc: Akhil Raj
Cc: Andrew Morton
Cc: Aneesh Kumar K.V
Cc: Baoquan He
Cc: Borislav Petkov (AMD)
Cc: Boris Ostrovsky
Cc: Christophe Leroy
Cc: Dave Hansen
Cc: Dave Young
Cc: David Hildenbrand
Cc: Eric DeVolder
Cc: Greg Kroah-Hartman
Cc: Hari Bathini
Cc: Laurent Dufour
()` and
`arch_crash_handle_hotplug_event()` to accept the `memory_notify` object
as an argument from crash memory hotplug notifier.
Since no such object is available in the case of CPU hotplug event, the
crash CPU hotplug notifier `crash_cpuhp_online()` passes NULL to the
crash hotplug handler.
Signed-off-by: Sourabh Jain
Cc: Akhil
Dufour
Cc: Mahesh Salgaonkar
Cc: Michael Ellerman
Cc: Mimi Zohar
Cc: Naveen N Rao
Cc: Oscar Salvador
Cc: Thomas Gleixner
Cc: Valentin Schneider
Cc: Vivek Goyal
Cc: kexec@lists.infradead.org
Cc: x...@kernel.org
Sourabh Jain (6):
crash: forward memory_notify arg to arch crash hotplug
, these functions are utilized for in-kernel updates
to kdump image during CPU/Memory hotplug or online/offline events for
both kexec_load and kexec_file_load syscalls.
There is no intended functional change.
Signed-off-by: Sourabh Jain
Reviewed-by: Laurent Dufour
Cc: Akhil Raj
Cc: Andrew Morton
Cc
.
Signed-off-by: Sourabh Jain
Cc: Akhil Raj
Cc: Andrew Morton
Cc: Aneesh Kumar K.V
Cc: Baoquan He
Cc: Borislav Petkov (AMD)
Cc: Boris Ostrovsky
Cc: Christophe Leroy
Cc: Dave Hansen
Cc: Dave Young
Cc: David Hildenbrand
Cc: Eric DeVolder
Cc: Greg Kroah-Hartman
Cc: Hari Bathini
Cc: Laurent
, these functions are utilized for in-kernel updates
to kdump image during CPU/Memory hotplug or online/offline events for
both kexec_load and kexec_file_load syscalls.
There is no intended functional change.
Signed-off-by: Sourabh Jain
Reviewed-by: Laurent Dufour
Cc: Akhil Raj
Cc: Andrew Morton
Cc
.
Signed-off-by: Sourabh Jain
Cc: Akhil Raj
Cc: Andrew Morton
Cc: Baoquan He
Cc: Borislav Petkov (AMD)
Cc: Boris Ostrovsky
Cc: Christophe Leroy
Cc: Dave Hansen
Cc: Dave Young
Cc: David Hildenbrand
Cc: Eric DeVolder
Cc: Greg Kroah-Hartman
Cc: Hari Bathini
Cc: Laurent Dufour
Cc: Mahesh
nabled by default.
Signed-off-by: Sourabh Jain
Cc: Akhil Raj
Cc: Andrew Morton
Cc: Baoquan He
Cc: Borislav Petkov (AMD)
Cc: Boris Ostrovsky
Cc: Christophe Leroy
Cc: Dave Hansen
Cc: Dave Young
Cc: David Hildenbrand
Cc: Eric DeVolder
Cc: Greg Kroah-Hartman
Cc: Hari Bathini
Cc: Laurent Duf
s related to this feature are kept under the CRASH_HOTPLUG
config, and it is enabled by default.
Signed-off-by: Sourabh Jain
Cc: Akhil Raj
Cc: Andrew Morton
Cc: Baoquan He
Cc: Borislav Petkov (AMD)
Cc: Boris Ostrovsky
Cc: Christophe Leroy
Cc: Dave Hansen
Cc: Dave Young
Cc: David Hildenbrand
Cc: E
()` and
`arch_crash_handle_hotplug_event()` to accept the `memory_notify` object
as an argument from crash memory hotplug notifier.
Since no such object is available in the case of CPU hotplug event, the
crash CPU hotplug notifier `crash_cpuhp_online()` passes NULL to the
crash hotplug handler.
Signed-off-by: Sourabh Jain
Cc: Akhil
Cc: Valentin Schneider
Cc: Vivek Goyal
Cc: kexec@lists.infradead.org
Cc: x...@kernel.org
Sourabh Jain (6):
crash: forward memory_notify arg to arch crash hotplug handler
crash: make CPU and Memory hotplug support reporting flexible
crash: add a new kexec flag for FDT update
powerpc/kexec: t
Signed-off-by: Sourabh Jain
Cc: Akhil Raj
Cc: Andrew Morton
Cc: Baoquan He
Cc: Borislav Petkov (AMD)
Cc: Boris Ostrovsky
Cc: Christophe Leroy
Cc: Dave Hansen
Cc: Dave Young
Cc: David Hildenbrand
Cc: Eric DeVolder
Cc: Greg Kroah-Hartman
Cc: Hari Bathini
Cc: Laurent Dufour
Cc: Mahesh Salgaonkar
C
]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url:
https://github.com/intel-lab-lkp/linux/commits/Sourabh-Jain/crash-forward-memory_notify
s related to this feature are kept under the CRASH_HOTPLUG
config, and it is enabled by default.
Signed-off-by: Sourabh Jain
Cc: Akhil Raj
Cc: Andrew Morton
Cc: Baoquan He
Cc: Borislav Petkov (AMD)
Cc: Boris Ostrovsky
Cc: Christophe Leroy
Cc: Dave Hansen
Cc: Dave Young
Cc: David Hildenbrand
Cc: E
Signed-off-by: Sourabh Jain
Cc: Akhil Raj
Cc: Andrew Morton
Cc: Baoquan He
Cc: Borislav Petkov (AMD)
Cc: Boris Ostrovsky
Cc: Christophe Leroy
Cc: Dave Hansen
Cc: Dave Young
Cc: David Hildenbrand
Cc: Eric DeVolder
Cc: Greg Kroah-Hartman
Cc: Hari Bathini
Cc: Laurent Dufour
Cc: Mahesh Salgaonkar
C
events for
both kexec_load and kexec_file_load syscalls.
There is no intended functional change.
Signed-off-by: Sourabh Jain
Reviewed-by: Laurent Dufour
Cc: Akhil Raj
Cc: Andrew Morton
Cc: Baoquan He
Cc: Borislav Petkov (AMD)
Cc: Boris Ostrovsky
Cc: Christophe Leroy
Cc: Dave Hansen
Cc
.
Signed-off-by: Sourabh Jain
Cc: Akhil Raj
Cc: Andrew Morton
Cc: Baoquan He
Cc: Borislav Petkov (AMD)
Cc: Boris Ostrovsky
Cc: Christophe Leroy
Cc: Dave Hansen
Cc: Dave Young
Cc: David Hildenbrand
Cc: Eric DeVolder
Cc: Greg Kroah-Hartman
Cc: Hari Bathini
Cc: Laurent Dufour
Cc: Mahesh
ng
Cc: David Hildenbrand
Cc: Eric DeVolder
Cc: Greg Kroah-Hartman
Cc: Hari Bathini
Cc: Laurent Dufour
Cc: Mahesh Salgaonkar
Cc: Michael Ellerman
Cc: Mimi Zohar
Cc: Oscar Salvador
Cc: Thomas Gleixner
Cc: Valentin Schneider
Cc: Vivek Goyal
Cc: kexec@lists.infradead.org
Cc: x...@kernel.org
()` and
`arch_crash_handle_hotplug_event()` to accept the `memory_notify` object
as an argument from crash memory hotplug notifier.
Since no such object is available in the case of CPU hotplug event, the
crash CPU hotplug notifier `crash_cpuhp_online()` passes NULL to the
crash hotplug handler.
Signed-off-by: Sourabh Jain
Cc: Akhil
nabled by default.
Signed-off-by: Sourabh Jain
Cc: Akhil Raj
Cc: Andrew Morton
Cc: Baoquan He
Cc: Borislav Petkov (AMD)
Cc: Boris Ostrovsky
Cc: Christophe Leroy
Cc: Dave Hansen
Cc: Dave Young
Cc: David Hildenbrand
Cc: Eric DeVolder
Cc: Greg Kroah-Hartman
Cc: Hari Bathini
Cc: Laurent Duf
With this patch series applied first and kdump kernel boots fine
with nr_cpus=1 on both PowerNV and PowerVM platforms.
For both patches:
Tested-by: Sourabh Jain
- Sourabh Jain
On 17/10/23 07:58, Pingfan Liu wrote:
*** Idea ***
For kexec -p, the boot cpu can be not the cpu0, this causes
: 1,3-7
Model name: POWER10
kdump:/#
kdump:/# cat /proc/meminfo | grep Percpu
Percpu: 7168 kB
Thanks,
Sourabh Jain
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http://lists.infradead.org/mailman/listinfo/kexec
Hello Christophe,
On 13/10/23 18:59, Christophe Leroy wrote:
Le 19/06/2023 à 04:49, Sourabh Jain a écrit :
Move update_cpus_node and get_crash_memory_ranges functions from
kexec/file_load_64.c to kexec/core_64.c to make these functions usable
by other kexec components.
Later in the series
Hello Pingfan,
With this patch series applied, the kdump kernel fails to boot on
powerpc with nr_cpus=1.
Console logs:
---
[root]# echo c > /proc/sysrq-trigger
[ 74.783235] sysrq: Trigger a crash
[ 74.783244] Kernel panic - not syncing: sysrq triggered crash
[ 74.783252]
rv[bt_thread]);
...
}
Hope it helps.
Thanks,
Sourabh Jain
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http://lists.infradead.org/mailman/listinfo/kexec
Hello Pingfan,
With this patch series applied, the kdump kernel fails to boot on
powerpc with nr_cpus=1.
Console logs:
---
[root]# echo c > /proc/sysrq-trigger
[ 74.783235] sysrq: Trigger a crash
[ 74.783244] Kernel panic - not syncing: sysrq triggered crash
[
7e99a378 4b3c
[ 0.00] ---[ end trace ]---
[ 0.00]
[ 0.00] Kernel panic - not syncing: Fatal exception
[ 0.00] Rebooting in 180 seconds..
However, the kdump kernel boots fine if the kernel crashes on CPU 0.
Thanks,
Sourabh Jain
On 09/10/23 17:00, Pi
Hello Coiby,
On 14/08/23 08:49, Coiby Xu wrote:
Hi Sourabh,
On Mon, Aug 14, 2023 at 08:17:34AM +0530, Sourabh Jain wrote:
Hello Simon,
Can we include below fix?
https://lists.fedoraproject.org/archives/list/ke...@lists.fedoraproject.org/thread/O3W4SLVVFT6J25U5YSXNZ3URZ4QY6SRU/
I'll
Hello Simon,
Can we include below fix?
https://lists.fedoraproject.org/archives/list/ke...@lists.fedoraproject.org/thread/O3W4SLVVFT6J25U5YSXNZ3URZ4QY6SRU/
Thanks,
Sourabh
On 11/08/23 13:00, Simon Horman wrote:
Hi all,
I am planning to release kexec-tools v2.0.27 in the next two weeks
to
Reviewed-by: Sourabh Jain
Acked-by: Hari Bathini
Acked-by: Baoquan He
---
include/linux/crash_core.h | 9 +++
include/linux/kexec.h | 11 +++
kernel/Kconfig.kexec | 31
kernel/crash_core.c| 142 +
kernel/kexec_core.c
kernel kexec segments
on CPU/Memory hotplug and online/offline events are kept under
CRASH_HOTPLUG config and it is enabled by default on PowerPC platform.
Signed-off-by: Sourabh Jain
---
arch/powerpc/Kconfig | 3 ++
arch/powerpc/include/asm/kexec.h | 10 +
arch/powerpc/kexec
)
and the number of pages in the hot removed memory. By utilizing this
information, the base address and size of the hot removed memory is
calculated and used to avoid adding the hot removed memory region to
the elfcorehdr.
Signed-off-by: Sourabh Jain
---
arch/powerpc/include/asm/kexec.h | 2 +-
arch/powerpc
/offline events
for both kexec_load and kexec_file_load syscalls.
No functional change intended.
Signed-off-by: Sourabh Jain
Reviewed-by: Laurent Dufour
---
arch/powerpc/include/asm/kexec.h | 6 ++
arch/powerpc/kexec/core_64.c | 166 ++
arch/powerpc/kexec
l/20220303162725.49640-1-eric.devol...@oracle.com/
- Fixed warning reported by checpatch script
v2:
- Use generic hotplug handler introduced by
https://lore.kernel.org/lkml/20220209195706.51522-1-eric.devol...@oracle.com/
a significant change from v1.
Sourabh Jain (4):
powerpc/kexe
space.
The changes done here will also work for the kexec_load system call given
that the kexec tool builds the elfcoredhr with additional space to
accommodate future memory regions as it is done for kexec_file_load
system call in the kernel.
Signed-off-by: Sourabh Jain
---
arch/powerpc/include
gned int sz;
sz = 2 + CONFIG_NR_CPUS_DEFAULT;
if (IS_ENABLED(CONFIG_MEMORY_HOTPLUG))
sz += CRASH_MAX_MEMORY_RANGES
Thanks,
Sourabh Jain
+ sz *= sizeof(Elf64_Phdr);
+ return sz;
+}
+
/**
* arch_crash_handle_hotplug_event() - Handle hotplug elfcorehdr changes
* @image: the activ
On 04/05/23 04:11, Eric DeVolder wrote:
The hotplug support for kexec_load() requires coordination with
userspace, and therefore a little extra help from the kernel to
facilitate the coordination.
In the absence of the solution contained within this particular
patch, if a kdump capture kernel
On 24/04/23 15:27, Laurent Dufour wrote:
On 23/04/2023 12:52:10, Sourabh Jain wrote:
Due to CPU/Memory hot plug/unplug or online/offline events the system
resources changes. A similar change should reflect in the loaded kdump
kernel kexec segments that describes the state of the CPU
On 24/04/23 19:35, Eric DeVolder wrote:
On 4/23/23 05:52, Sourabh Jain wrote:
The Problem:
Post CPU/Memory hot plug/unplug and online/offline events the kernel
holds stale information about the system. Dump collection with stale
kdump kernel might end up in dump capture failure
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