Add a sys interface to allow querying the memory reserved by
fadump for saving the crash dump.
Add an ABI doc entry for new sysfs interface.
- /sys/kernel/fadump_mem_reserved
Signed-off-by: Sourabh Jain
---
Changelog:
v1 -> v2:
- Added ABI doc for new sysfs interface.
v2 -&
On 8/26/19 3:46 PM, Sourabh Jain wrote:
>
>
> On 8/26/19 3:29 PM, Hari Bathini wrote:
>>
>>
>> On 10/08/19 11:29 PM, Sourabh Jain wrote:
>>> Add a sys interface to allow querying the memory reserved by
>>> fadump for saving the crash dump.
>>
On 8/26/19 3:29 PM, Hari Bathini wrote:
>
>
> On 10/08/19 11:29 PM, Sourabh Jain wrote:
>> Add a sys interface to allow querying the memory reserved by
>> fadump for saving the crash dump.
>>
>> Add an ABI doc entry for new sysfs interface.
>>- /sys/
are replicated inside /sys/kernel/fadump/ and eventually get removed
in future.
Added ABI documentation for all the replicated FADump sysfs file in
Documentation/ABI/testing/sysfs-kernel-fadump.
Signed-off-by: Sourabh Jain
---
Documentation/ABI/testing/sysfs-kernel-fadump | 41
Add a sys interface to allow querying the memory reserved by FADump for
saving the crash dump.
Also added Documentation/ABI for the new sysfs file.
Signed-off-by: Sourabh Jain
---
Documentation/ABI/testing/sysfs-kernel-fadump| 7 +++
Documentation/powerpc/firmware-assisted-dump.rst
Add the missing ABI documentation for the already available fadump
sysfs files.
Signed-off-by: Sourabh Jain
---
Documentation/ABI/testing/sysfs-kernel-fadump_enabled | 7 +++
Documentation/ABI/testing/sysfs-kernel-fadump_registered | 8
Documentation/ABI/testing/sysfs-kernel
The /sys/kernel/fadump_* sysfs files are replicated under
/sys/kernel/fadump/ directory. But we need to keep the old
sysfs files to maintain the backward compatibility.
The sysfs files are scheduled to remove by 2021.
Signed-off-by: Sourabh Jain
---
.../{testing => obsolete}/sysfs-ker
to this a new FADump sys interface is added
to get the amount of memory reserved by FADump for saving the crash dump.
The series applies on top of:
https://lists.ozlabs.org/pipermail/linuxppc-dev/2019-September/196871.html
Sourabh Jain (4):
powerpc/fadump: replicate /sys/kernel/fadump_* sysfs
On 8/27/19 11:32 AM, Hari Bathini wrote:
>
>
> On 27/08/19 8:49 AM, Michael Ellerman wrote:
>> Hari Bathini writes:
>>> On 26/08/19 4:14 PM, Sourabh Jain wrote:
>>>> On 8/26/19 3:46 PM, Sourabh Jain wrote:
>>>>> On 8/26/19 3:29 PM, Hari
On 8/7/19 8:40 AM, Michael Ellerman wrote:
> Sourabh Jain writes:
>> Add a sys interface to allow querying the memory reserved by fadump
>> for saving the crash dump.
>>
>> Signed-off-by: Sourabh Jain
>> ---
>> Documentation/powerpc/firmware-assist
Add a sys interface to allow querying the memory reserved by fadump
for saving the crash dump.
Signed-off-by: Sourabh Jain
---
Documentation/powerpc/firmware-assisted-dump.rst | 5 +
arch/powerpc/kernel/fadump.c | 14 ++
2 files changed, 19 insertions
Add a sys interface to allow querying the memory reserved by
fadump for saving the crash dump.
Add an ABI doc entry for new sysfs interface.
- /sys/kernel/fadump_mem_reserved
Signed-off-by: Sourabh Jain
---
v1 -> v2:
- Added ABI doc for new sysfs interface.
---
Documentation/ABI/test
.
Also consolidate ABI documentation for all the FADump sysfs files in a
single file Documentation/ABI/testing/sysfs-kernel-fadump.
Signed-off-by: Sourabh Jain
---
Documentation/ABI/testing/sysfs-kernel-fadump | 41 +++
arch/powerpc/kernel/fadump.c | 38
Add the missing ABI documentation for the already available FADump
sysfs files.
Signed-off-by: Sourabh Jain
---
Documentation/ABI/testing/sysfs-kernel-fadump_enabled | 7 +++
Documentation/ABI/testing/sysfs-kernel-fadump_registered | 8
Documentation/ABI/testing/sysfs-kernel
The /sys/kernel/fadump_* sysfs files are replicated under
/sys/kernel/fadump/ directory. But we need to keep the old
sysfs files to maintain the backward compatibility.
The sysfs files are scheduled to remove by 2021.
Signed-off-by: Sourabh Jain
---
.../sysfs-kernel-fadump_enabled
Add a sys interface to allow querying the memory reserved by FADump for
saving the crash dump.
Also added Documentation/ABI for the new sysfs file.
Signed-off-by: Sourabh Jain
---
Documentation/ABI/testing/sysfs-kernel-fadump| 7 +++
Documentation/powerpc/firmware-assisted-dump.rst
BI doc for
exisiting sysfs file then replicate them under FADump kobject).
v2->v3:
- Remove the fadump_ prefix from replicated FADump sysfs file names.
Sourabh Jain (4):
Documentation/ABI: add ABI documentation for /sys/kernel/fadump_*
powerpc/fadump: reorganize /sys/kernel/fadump_* sy
On 11/5/19 10:31 PM, Hari Bathini wrote:
>
>
> On 05/11/19 2:24 PM, Sourabh Jain wrote:
>>
>>
>> On 10/21/19 1:11 PM, Hari Bathini wrote:
>>>
>>>
>>> On 18/10/19 6:35 PM, Sourabh Jain wrote:
>>>> The /sys/kernel/fadu
On 11/9/19 6:29 PM, Michal Suchánek wrote:
> On Sat, Nov 09, 2019 at 05:53:37PM +0530, Sourabh Jain wrote:
>> As the number of FADump sysfs files increases it is hard to manage all of
>> them inside /sys/kernel directory. It's better to have all the FADump
>> related sysfs
On 10/21/19 1:11 PM, Hari Bathini wrote:
>
>
> On 18/10/19 6:35 PM, Sourabh Jain wrote:
>> The /sys/kernel/fadump_* sysfs files are replicated under
>
> [...]
>
>> +Note: The following FADump sysfs files are deprecated.
>> +
>> +De
s_link_entry_to_kobj) that adds a symlink
to a kobject.
But the problem is __compat_only_sysfs_link_entry_to_kobj function keeps the
symlink file name similar to sysfs file and has no option to change it.
We can't use the __compat_only_sysfs_link_entry_to_kobj function directly
because
our symlink file name must be different from the target file name.
fadump_enabled -> fadump/enabled
But the good thing is we can tweak the __compat_only_sysfs_link_entry_to_kobj
function and allow the caller to change the sysmlink file name.
So I am writing a separate patch that adds a wrapper function around the
__compat_only_sysfs_link_entry_to_kobj function which will allow to have a
custom symlink file name.
Thanks,
Sourabh Jain
Add missing ABI documentation for existing FADump sysfs files.
Signed-off-by: Sourabh Jain
---
Documentation/ABI/testing/sysfs-kernel-fadump_enabled | 7 +++
Documentation/ABI/testing/sysfs-kernel-fadump_registered | 8
Documentation/ABI/testing/sysfs-kernel-fadump_release_mem
Add a sys interface to allow querying the memory reserved by FADump for
saving the crash dump.
Also added Documentation/ABI for the new sysfs file.
Signed-off-by: Sourabh Jain
---
Documentation/ABI/testing/sysfs-kernel-fadump| 7 +++
Documentation/powerpc/firmware-assisted-dump.rst | 5
the FADump sysfs files in a
single file Documentation/ABI/testing/sysfs-kernel-fadump.
Signed-off-by: Sourabh Jain
---
Documentation/ABI/testing/sysfs-kernel-fadump | 33 +++
arch/powerpc/kernel/fadump.c | 95 ---
2 files changed, 94 insertions(+), 34
allows function caller to customize the symlink name.
Signed-off-by: Sourabh Jain
---
fs/sysfs/group.c | 28 +---
include/linux/sysfs.h | 12
2 files changed, 37 insertions(+), 3 deletions(-)
diff --git a/fs/sysfs/group.c b/fs/sysfs/group.c
index
Add a deprecation note in FADump sysfs ABI documentation files and move
them from ABI/testing to ABI/obsolete directory.
Signed-off-by: Sourabh Jain
---
.../ABI/{testing => obsolete}/sysfs-kernel-fadump_enabled | 2 ++
.../{testing => obsolete}/sysfs-kernel-fadump_registere
/firmware/opal/core sysfs file.
Signed-off-by: Sourabh Jain
---
.../sysfs-kernel-fadump_release_opalcore | 2 +
.../powerpc/firmware-assisted-dump.rst| 15 +++--
arch/powerpc/platforms/powernv/opal-core.c| 55 ++-
3 files changed, 51 insertions(+), 21 deletions
v5:
- Changed the wrapper function name in 2/6.
- Defined FADump kobject attributes using __ATTR_* macros.
- Replace individual FADump sysfs file creation with group.
- Added a macro to create symlink.
Sourabh Jain (6):
Documentation/ABI: add ABI documentation for /sys/kernel/fadump_
On 12/7/19 12:44 AM, Greg KH wrote:
> On Fri, Dec 06, 2019 at 11:57:53PM +0530, Sourabh Jain wrote:
>>
>>
>> On 12/6/19 6:16 PM, Greg KH wrote:
>>> On Fri, Dec 06, 2019 at 05:54:30PM +0530, Sourabh Jain wrote:
>>>> The __compat_only_sysfs_lin
the FADump sysfs files in a
single file Documentation/ABI/testing/sysfs-kernel-fadump.
Signed-off-by: Sourabh Jain
---
Documentation/ABI/testing/sysfs-kernel-fadump | 33 +
arch/powerpc/kernel/fadump.c | 118 +-
2 files changed, 117 insertions(+), 34
allows function caller to customize the symlink name.
Signed-off-by: Sourabh Jain
---
fs/sysfs/group.c | 28 +---
include/linux/sysfs.h | 12
2 files changed, 37 insertions(+), 3 deletions(-)
diff --git a/fs/sysfs/group.c b/fs/sysfs/group.c
index
/firmware/opal/core sysfs file.
Signed-off-by: Sourabh Jain
---
.../sysfs-kernel-fadump_release_opalcore | 2 +
.../powerpc/firmware-assisted-dump.rst| 15 +++--
arch/powerpc/platforms/powernv/opal-core.c| 55 ++-
3 files changed, 51 insertions(+), 21 deletions
Add missing ABI documentation for existing FADump sysfs files.
Signed-off-by: Sourabh Jain
---
Documentation/ABI/testing/sysfs-kernel-fadump_enabled | 7 +++
Documentation/ABI/testing/sysfs-kernel-fadump_registered | 8
Documentation/ABI/testing/sysfs-kernel-fadump_release_mem
eation fails.
- Removed CREATE_SYMLINK macro.
Sourabh Jain (6):
Documentation/ABI: add ABI documentation for /sys/kernel/fadump_*
sysfs: wrap __compat_only_sysfs_link_entry_to_kobj function to change
the symlink name
powerpc/fadump: reorganize /sys/kernel/fadump_* sysfs files
powerpc/p
Add a deprecation note in FADump sysfs ABI documentation files and move
them from ABI/testing to ABI/obsolete directory.
Signed-off-by: Sourabh Jain
---
.../ABI/{testing => obsolete}/sysfs-kernel-fadump_enabled | 2 ++
.../{testing => obsolete}/sysfs-kernel-fadump_registere
Add a sys interface to allow querying the memory reserved by FADump for
saving the crash dump.
Also added Documentation/ABI for the new sysfs file.
Signed-off-by: Sourabh Jain
---
Documentation/ABI/testing/sysfs-kernel-fadump| 7 +++
Documentation/powerpc/firmware-assisted-dump.rst | 5
FADump kobject).
v2 -> v3:
- Remove the fadump_ prefix from replicated FADump sysfs file names.
v3 -> v4:
- New patch that adds a wrapper function to create symlink with
custom symlink file name.
- Add symlink instead of replicating the FADump sysfs files.
- Move the OPAL core rel
Sou
Add missing ABI documentation for existing FADump sysfs files.
Signed-off-by: Sourabh Jain
---
Documentation/ABI/testing/sysfs-kernel-fadump_enabled | 7 +++
Documentation/ABI/testing/sysfs-kernel-fadump_registered | 8
Documentation/ABI/testing/sysfs-kernel-fadump_release_mem
allows function caller to customize the symlink name.
Signed-off-by: Sourabh Jain
---
fs/sysfs/group.c | 28 +---
include/linux/sysfs.h | 12
2 files changed, 37 insertions(+), 3 deletions(-)
diff --git a/fs/sysfs/group.c b/fs/sysfs/group.c
index d41c21fef138
the FADump sysfs files in a
single file Documentation/ABI/testing/sysfs-kernel-fadump.
Signed-off-by: Sourabh Jain
---
Documentation/ABI/testing/sysfs-kernel-fadump | 33 ++
arch/powerpc/kernel/fadump.c | 66 ++-
2 files changed, 83 insertions(+), 16
/firmware/opal/core sysfs file.
Signed-off-by: Sourabh Jain
---
.../sysfs-kernel-fadump_release_opalcore | 2 ++
.../powerpc/firmware-assisted-dump.rst| 15 +
arch/powerpc/platforms/powernv/opal-core.c| 31 ++-
3 files changed, 34 insertions(+), 14
Add a deprecation note in FADump sysfs ABI documentation files and move
them from ABI/testing to ABI/obsolete directory.
Signed-off-by: Sourabh Jain
---
.../ABI/{testing => obsolete}/sysfs-kernel-fadump_enabled | 2 ++
.../{testing => obsolete}/sysfs-kernel-fadump_registere
Add a sys interface to allow querying the memory reserved by FADump for
saving the crash dump.
Also added Documentation/ABI for the new sysfs file.
Signed-off-by: Sourabh Jain
---
Documentation/ABI/testing/sysfs-kernel-fadump| 7 +++
Documentation/powerpc/firmware-assisted-dump.rst
On 12/6/19 6:16 PM, Greg KH wrote:
> On Fri, Dec 06, 2019 at 05:54:30PM +0530, Sourabh Jain wrote:
>> The __compat_only_sysfs_link_entry_to_kobj function creates a symlink to a
>> kobject but doesn't provide an option to change the symlink file name.
>>
>> This pa
On 12/6/19 6:15 PM, Greg KH wrote:
> On Fri, Dec 06, 2019 at 05:54:31PM +0530, Sourabh Jain wrote:
>> +static struct kobj_attribute release_attr = __ATTR(release_mem,
>>
On 12/6/19 6:18 PM, Greg KH wrote:
> On Fri, Dec 06, 2019 at 05:54:32PM +0530, Sourabh Jain wrote:
>> The /sys/firmware/opal/core and /sys/kernel/fadump_release_opalcore sysfs
>> files are used to export and release the OPAL memory on PowerNV platform.
>> let's organize th
On 12/6/19 6:18 PM, Greg KH wrote:
> On Fri, Dec 06, 2019 at 05:54:34PM +0530, Sourabh Jain wrote:
>> Add a sys interface to allow querying the memory reserved by FADump for
>> saving the crash dump.
>>
>> Also added Documentation/ABI for the new sysfs file.
>&g
On 12/9/19 1:40 PM, Greg KH wrote:
> On Mon, Dec 09, 2019 at 10:28:23AM +0530, Sourabh Jain wrote:
>> +#define CREATE_SYMLINK(target, symlink_name) do {\
>> +rc = compat_only_sysfs_link_entry_to_kobj(kernel_kobj, fadump_kobj, \
>> +
Add the missing ABI documentation for the already available FADump
sysfs files.
Signed-off-by: Sourabh Jain
---
Documentation/ABI/testing/sysfs-kernel-fadump_enabled | 7 +++
Documentation/ABI/testing/sysfs-kernel-fadump_registered | 8
Documentation/ABI/testing/sysfs-kernel
are replicated inside /sys/kernel/fadump/ and eventually get
removed in future.
Consolidate ABI documentation for all the FADump sysfs file in a single
file Documentation/ABI/testing/sysfs-kernel-fadump.
Signed-off-by: Sourabh Jain
---
Documentation/ABI/testing/sysfs-kernel-fadump | 41
BI doc for
exisiting sysfs file then replicate them under FADump kobject).
Sourabh Jain (4):
Documentation/ABI: add ABI documentation for /sys/kernel/fadump_*
powerpc/fadump: reorganize /sys/kernel/fadump_* sysfs files
Documentation/ABI: mark /sys/kernel/fadump_* sysfs files deprecated
powerpc/
Add a sys interface to allow querying the memory reserved by FADump for
saving the crash dump.
Also added Documentation/ABI for the new sysfs file.
Signed-off-by: Sourabh Jain
---
Documentation/ABI/testing/sysfs-kernel-fadump| 7 +++
Documentation/powerpc/firmware-assisted-dump.rst
The /sys/kernel/fadump_* sysfs files are replicated under
/sys/kernel/fadump/ directory. But we need to keep the old
sysfs files to maintain the backward compatibility.
The sysfs files are scheduled to remove by 2021.
Signed-off-by: Sourabh Jain
---
.../sysfs-kernel-fadump_enabled
On 11/25/19 12:10 AM, Michal Suchánek wrote:
> On Sat, Nov 16, 2019 at 08:07:29PM +0530, Sourabh Jain wrote:
>>
>>
>> On 11/9/19 6:29 PM, Michal Suchánek wrote:
>>> On Sat, Nov 09, 2019 at 05:53:37PM +0530, Sourabh Jain wrote:
>>>> As the number
update completes
To avoid the race between the CPU who proceeds with the pstore and the CPU
who triggers the crash, a delay of 500 milliseconds is added on fadump
crash path to allow pstore update to complete before we trigger the crash.
Signed-off-by: Sourabh Jain
---
arch/powerpc/
update completes
To avoid the race between the CPU who proceeds with the pstore and the CPU
who triggers the crash, a delay of 500 milliseconds is added on fadump
crash path to allow pstore update to complete before we trigger the crash.
Signed-off-by: Sourabh Jain
---
arch/powerpc/k
update completes
In order to avoid the race between the CPU who proceeds with the pstore
and the CPU who triggers the crash, a delay of 100 milliseconds is added
on fadump crash path to allow pstore update to complete before we trigger
the crash.
Signed-off-by: Sourabh Jain
---
arch
rash. A timeout is kept to
ensure the primary CPU (one who initiates the crash) do not wait for
secondary CPUs indefinitely.
Signed-off-by: Sourabh Jain
---
arch/powerpc/kernel/fadump.c | 24
1 file changed, 24 insertions(+)
---
Chanagelog:
v1 -> v3:
- https://
rash. A timeout is kept to
ensure the primary CPU (one who initiates the crash) do not wait for
secondary CPUs indefinitely.
Signed-off-by: Sourabh Jain
---
arch/powerpc/kernel/fadump.c | 25 +
1 file changed, 25 insertions(+)
---
Chanagelog:
v1 -> v3:
- https://
c function).
Signed-off-by: Sourabh Jain
---
arch/powerpc/include/asm/bug.h | 2 ++
arch/powerpc/kernel/setup-common.c | 1 +
arch/powerpc/kernel/traps.c| 12 +++-
arch/powerpc/platforms/ps3/setup.c | 2 +-
arch/powerpc/platforms/pseries/setup.c | 2 +-
5 fil
rash. A timeout is kept to
ensure the primary CPU (one who initiates the crash) do not wait for
secondary CPUs indefinitely.
Signed-off-by: Sourabh Jain
---
arch/powerpc/kernel/fadump.c | 24
1 file changed, 24 insertions(+)
---
Chanagelog:
v1 -> v3:
- https://
("powerpc/kexec_file: Add appropriate regions for memory
reserve map")
Signed-off-by: Sourabh Jain
Reviewed-by: Hari Bathini
Cc:
---
arch/powerpc/kexec/file_load_64.c | 88 +++
1 file changed, 88 insertions(+)
---
Changelog:
v1 -> v5
- https://lis
("powerpc/kexec_file: Add appropriate regions for memory
reserve map")
Signed-off-by: Sourabh Jain
Reviewed-by: Hari Bathini
Cc:
---
arch/powerpc/kexec/file_load_64.c | 92 +++
1 file changed, 92 insertions(+)
---
Changelog:
v1 -> v5
- https://lis
On 28/04/21 6:02 am, Tyrel Datwyler wrote:
On 4/26/21 9:51 PM, Sourabh Jain wrote:
kexec_file_load uses initial_boot_params in setting up the device-tree
for the kernel to be loaded. Though initial_boot_params holds info
about CPUs at the time of boot, it doesn't account for hot added CPUs
("powerpc/kexec_file: Add appropriate regions for memory
reserve map")
Signed-off-by: Sourabh Jain
Reviewed-by: Hari Bathini
Cc:
---
arch/powerpc/kexec/file_load_64.c | 98 +++
1 file changed, 98 insertions(+)
---
Changelog:
v1 -> v3
- https://lis
("powerpc/kexec_file: Add appropriate regions for memory
reserve map")
Signed-off-by: Sourabh Jain
Reviewed-by: Hari Bathini
Cc:
---
arch/powerpc/kexec/file_load_64.c | 97 +++
1 file changed, 97 insertions(+)
---
Changelog:
v1 -> v3
- https://lis
On 19/04/21 5:51 pm, Michael Ellerman wrote:
Hari Bathini writes:
On 19/04/21 2:06 pm, Sourabh Jain wrote:
kexec_file_load uses initial_boot_params in setting up the device-tree
for the kernel to be loaded. Though initial_boot_params holds info
about CPUs at the time of boot, it doesn't
On 16/04/21 3:03 pm, Hari Bathini wrote:
On 16/04/21 12:17 pm, Sourabh Jain wrote:
With the kexec_file_load system call when system crashes on the hot add
CPU the capture kernel hangs and failed to collect the vmcore.
Kernel panic - not syncing: sysrq triggered crash
CPU: 24 PID: 6065
("powerpc/kexec_file: Add appropriate regions for memory
reserve map")
Signed-off-by: Sourabh Jain
---
arch/powerpc/kexec/file_load_64.c | 98 +++
1 file changed, 98 insertions(+)
---
Changelog:
v1 -> v2
- fdt should be updated regardless of kexec typ
("powerpc/kexec_file: Add appropriate regions for memory
reserve map")
Signed-off-by: Sourabh Jain
Cc:
---
arch/powerpc/kexec/file_load_64.c | 98 +++
1 file changed, 98 insertions(+)
---
Changelog:
v1 -> v2
- fdt should be updated regardless of kexec typ
;)
Signed-off-by: Sourabh Jain
---
arch/powerpc/kexec/file_load_64.c | 100 ++
1 file changed, 100 insertions(+)
diff --git a/arch/powerpc/kexec/file_load_64.c
b/arch/powerpc/kexec/file_load_64.c
index 02b9e4d0dc40..63a30f1ddc2c 100644
--- a/arch/powerpc/kexec/file
Salgaonkar (2):
fixup mmu_features immediately after getting cpu pa features.
Remove 256MB limit restriction for boot cpu paca allocation
Sourabh Jain (1):
powerpc: Set crashkernel offset to mid of RMA region
arch/powerpc/include/asm/book3s/64/mmu.h | 2 ++
arch/powerpc/include/asm/mmu.h
ported segment
size in HPT mode.
Signed-off-by: Mahesh Salgaonkar
Signed-off-by: Sourabh Jain
Reported-and-tested-by: Abdul haleem
---
arch/powerpc/include/asm/book3s/64/mmu.h | 1 +
arch/powerpc/include/asm/mmu.h | 1 +
arch/powerpc/kernel/prom.c | 2 ++
arch/powerpc/
. The rest of LPAR specific initialization will still
be done during pseries_probe_fw_features as usual.
Signed-off-by: Sourabh Jain
Reported-and-tested-by: Abdul haleem
---
arch/powerpc/kernel/rtas.c | 4
arch/powerpc/kexec/core.c | 15 +++
2 files changed, 15 insertions(+), 4
allocation for boot
cpu removes this restriction of 256MB limit. This allows kdump kernel to
successfully boot and capture vmcore.
Signed-off-by: Mahesh Salgaonkar
Signed-off-by: Sourabh Jain
Reported-and-tested-by: Abdul haleem
---
arch/powerpc/include/asm/book3s/64/mmu.h | 1 +
arch/powerpc
allocation for boot
cpu removes this restriction of 256MB limit. This allows kdump kernel to
successfully boot and capture vmcore.
Signed-off-by: Mahesh Salgaonkar
Signed-off-by: Sourabh Jain
Reported-and-tested-by: Abdul haleem
---
arch/powerpc/include/asm/book3s/64/mmu.h | 1 +
arch/powerpc
. The rest of LPAR specific initialization will still
be done during pseries_probe_fw_features as usual.
Signed-off-by: Sourabh Jain
Reported-and-tested-by: Abdul haleem
---
arch/powerpc/kernel/rtas.c | 4
arch/powerpc/kexec/core.c | 15 +++
2 files changed, 15 insertions(+), 4
:
forgot to add version tag last time
forgot to CCed PowerPC maintainer
Mahesh Salgaonkar (2):
fixup mmu_features immediately after getting cpu pa features.
Remove 256MB limit restriction for boot cpu paca allocation
Sourabh Jain (1):
powerpc: Set crashkernel offset to mid
ported segment
size in HPT mode.
Signed-off-by: Mahesh Salgaonkar
Signed-off-by: Sourabh Jain
Reported-and-tested-by: Abdul haleem
---
arch/powerpc/include/asm/book3s/64/mmu.h | 1 +
arch/powerpc/include/asm/mmu.h | 1 +
arch/powerpc/kernel/prom.c | 2 ++
arch/powerpc/
that by fixing the radix bit in mmu_feature.
Mahesh Salgaonkar (2):
fixup mmu_features immediately after getting cpu pa features.
Remove 256MB limit restriction for boot cpu paca allocation
Sourabh Jain (1):
powerpc: Set crashkernel offset to mid of RMA region
arch/powerpc/include/asm/book3s
ported segment
size in HPT mode.
Signed-off-by: Mahesh Salgaonkar
Signed-off-by: Sourabh Jain
Reported-and-tested-by: Abdul haleem
---
arch/powerpc/include/asm/book3s/64/mmu.h | 1 +
arch/powerpc/include/asm/mmu.h | 1 +
arch/powerpc/kernel/prom.c | 1 +
arch/powerpc/mm/ini
allocation for boot
cpu removes this restriction of 256MB limit. This allows kdump kernel to
successfully boot and capture vmcore.
Signed-off-by: Mahesh Salgaonkar
Signed-off-by: Sourabh Jain
Reported-and-tested-by: Abdul haleem
---
arch/powerpc/include/asm/book3s/64/mmu.h | 1 +
arch/powerpc
essential system resources.
Given that the RMA region size can be 512MB or more, setting the
crashkernel offset to mid of RMA size will leave enough space to
kernel to allocate memory for other system resources in the first
memory block.
Signed-off-by: Sourabh Jain
Reported-and-tested-by: Abdul
plitting the probe_fw_features
functions into two functions, one to detect FW_FEATURE_LPAR and another
function to do the rest?
also do we expect other firmware features to be set along with
FW_FEATURE_LPAR?
No only FW_FEATURE_LPAR feature so that kernel can decide the
crashkernel offset accordingly.
Thanks for the review.
- Sourabh Jain
On 04/10/21 21:36, Aneesh Kumar K.V wrote:
On 10/4/21 20:41, Sourabh Jain wrote:
On large config LPARs (having 192 and more cores), Linux fails to boot
due to insufficient memory in the first memory block. It is due to the
reserve crashkernel area starts at 128MB offset by default and which
Hi MPE,
Any comments or suggestion on list patch series?
Thanks,
Sourabh Jain
On 18/10/21 14:14, Sourabh Jain wrote:
From: Mahesh Salgaonkar
On system with radix support available, early_radix_enabled() starts
returning true for a small window (until mmu_early_init_devtree() is
called) even
segment is present.
The only change was done to enabled crash hotplug support for kexec_load is
updated the crash hotplug handler to identify the FDT segment from kexec
segment array.
Signed-off-by: Sourabh Jain
---
arch/powerpc/kexec/core_64.c | 21 -
1 file changed, 20
memory crash hotplug support is not there yet the crash hotplug
handler simply warn the user and return.
Signed-off-by: Sourabh Jain
---
arch/powerpc/kexec/core_64.c | 46
arch/powerpc/kexec/elf_64.c | 39 ++
2 files changed, 85
The option CRASH_HOTPLUG enables, in kernel update to kexec segments on
hotplug events.
All the updates needed on the capture kernel load path in the kernel for
both kexec_load and kexec_file_load system will be kept under this config.
Signed-off-by: Sourabh Jain
---
arch/powerpc/Kconfig | 11
index;
bool is_valid;
}
Signed-off-by: Sourabh Jain
---
include/linux/kexec.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/include/linux/kexec.h b/include/linux/kexec.h
index e00c373c4095..e9038f2c75ee 100644
--- a/include/linux/kexec.h
+++ b/include/linux/kexec.h
@@ -306,6 +306,8
Make the update_cpus_node function non-static and export it for
usage in other kexec components.
The update_cpus_node definition is moved to core_64.c so that it
can be used with both kexec_load and kexec_file_load system calls.
Signed-off-by: Sourabh Jain
---
arch/powerpc/include/asm/kexec.h
// Given that we might need to update mutliple kexec segments
+ // then having array to keep indexes of all hotplug kexec segments
+ // will be helpful.
+ unsigned int fdt_index;
};
struct arch_map_entry {
---
Sourabh Jain (5):
powerpc/kexec: make update_cpus_node non-sta
Hello Baoquan,
Hi,
On 02/21/22 at 02:16pm, Sourabh Jain wrote:
On hotplug event (CPU/memory) the CPU information prepared for the kdump kernel
becomes stale unless it is prepared again. To keep the CPU information
up-to-date a kdump service reload is triggered via the udev rule.
The above
xec_load system call
to work (not needed if -s option is used during kexec panic load):
---
>From 37aa38713c163b31d9c6e80ddc059424c9fcd66d Mon Sep 17 00:00:00 2001
From: Sourabh Jain
Date: Mon, 22 Nov 2021 14:12:52 +0530
Subject: [PATCH] kexec/ppc64: use pre-allocated memory hole for kexec
This patch enables the kexec_file_load system to utilize the pre-allocated
space for kexec crash FDT during the system boot.
Signed-off-by: Sourabh Jain
---
arch/powerpc/kexec/elf_64.c | 22 +++---
arch/powerpc/kexec/file_load_64.c | 4
2 files changed, 23 insertions
Export kexec crash FDT address and size to /sys/kernel/kexec_crash_fdt
and /sys/kernel/kexec_crash_fdt_size files to enabled kexec tool to
utilize pre-allocated space kdump FDT.
Signed-off-by: Sourabh Jain
---
arch/powerpc/kexec/core_64.c | 27 +++
1 file changed, 27
-off-by: Sourabh Jain
---
arch/powerpc/include/asm/kexec.h | 1 +
arch/powerpc/kexec/core_64.c | 89
arch/powerpc/kexec/file_load_64.c| 87 ---
arch/powerpc/platforms/pseries/hotplug-cpu.c | 7 ++
4 files changed, 97
and kexec_file_load
system call can use them.
Signed-off-by: Sourabh Jain
---
arch/powerpc/include/asm/kexec.h | 4 +
arch/powerpc/kexec/core_64.c | 150 ++
arch/powerpc/kexec/file_load_64.c | 148 -
3 files changed, 154 insertions(+), 148
and kexec_file_load system calls.
A new config KEXEC_CRASH_FDT is added to include this feature at the build
time.
Signed-off-by: Sourabh Jain
---
arch/powerpc/Kconfig | 11 +++
arch/powerpc/include/asm/kexec.h | 5 +++
arch/powerpc/kexec/core_64.c | 52
Hello Eric,
On 24/03/22 00:02, Eric DeVolder wrote:
Notes below.
eric
On 3/21/22 03:04, Sourabh Jain wrote:
Two major changes are done to enable the crash CPU hotplug handler.
Firstly, updated the kexec_load path to prepare kimage for hotplug
changes and secondly, implemented the crash
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