On 2024/01/11 15:55, HAGIO KAZUHITO(萩尾 一仁) wrote:
> On 2023/12/29 5:33, Edward Chron wrote:
>> Submission to Project: makedumpfile
>> Component: dmesg
>> Files: printk.c makedumpfile.c makedumpfile.h
>> Code level patch applied against: 1.7.4++ - latest code pulled from
>> https://github.com/
Now crash codes under kernel/ folder has been split out from kexec
code, crash dumping can be separated from kexec reboot in config
items on mips with some adjustments.
Here use IS_ENABLED(CONFIG_CRASH_RESERVE) check to decide if compiling
in the crashkernel reservation code.
Signed-off-by: Baoqu
Now crash codes under kernel/ folder has been split out from kexec
code, crash dumping can be separated from kexec reboot in config
items on risc-v with some adjustments.
Here wrap up crash dumping codes with CONFIG_CRASH_DUMP ifdeffery, and
use IS_ENABLED(CONFIG_CRASH_RESERVE) check to decide if
Now crash codes under kernel/ folder has been split out from kexec
code, crash dumping can be separated from kexec reboot in config
items on s390 with some adjustments.
Here wrap up crash dumping codes with CONFIG_CRASH_DUMP ifdeffery.
Signed-off-by: Baoquan He
---
arch/s390/kernel/kexec_elf.c
Now crash codes under kernel/ folder has been split out from kexec
code, crash dumping can be separated from kexec reboot in config
items on SuperH with some adjustments.
wrap up crash dumping codes with CONFIG_CRASH_DUMP ifdeffery, and
use IS_ENABLED(CONFIG_CRASH_RESERVE) check to decide if compi
Now crash codes under kernel/ folder has been split out from kexec
code, crash dumping can be separated from kexec reboot in config
items on arm64 with some adjustments.
Here wrap up crash dumping codes with CONFIG_CRASH_DUMP ifdeffery.
Signed-off-by: Baoquan He
---
arch/arm64/include/asm/kexec
Now crash codes under kernel/ folder has been split out from kexec
code, crash dumping can be separated from kexec reboot in config
items on loongarch with some adjustments.
Here use IS_ENABLED(CONFIG_CRASH_RESERVE) check to decide if compiling
in the crashkernel reservation code.
Signed-off-by:
Now crash codes under kernel/ folder has been split out from kexec
code, crash dumping can be separated from kexec reboot in config
items on arm with some adjustments.
Here use CONFIG_CRASH_RESERVE ifdef to replace CONFIG_KEXEC ifdef.
Signed-off-by: Baoquan He
---
v2->v3:
- Fix the lkp reported
In PowerPC, the crash dumping and kexec reboot share code in
arch_kexec_locate_mem_hole(), in which struct crash_mem is used.
Here enfoce enforce KEXEC and KEXEC_FILE to select CRASH_DUMP for now.
Signed-off-by: Baoquan He
---
arch/powerpc/Kconfig | 5 +
1 file changed, 5 insertions(+)
dif
Now crash codes under kernel/ folder has been split out from kexec
code, crash dumping can be separated from kexec reboot in config
items on x86 with some adjustments.
Here, also change some ifdefs or IS_ENABLED() check to more appropriate
ones, e,g
- #ifdef CONFIG_KEXEC_CORE -> #ifdef CONFIG_CRA
Currently, KEXEC_CORE select CRASH_CORE automatically because crash codes
need be built in to avoid compiling error when building kexec code even
though the crash dumping functionality is not enabled. E.g
CONFIG_CRASH_CORE=y
CONFIG_KEXEC_CORE=y
CONFIG_KEXEC=y
CONFIG_KEXEC_FILE=
By splitting CRASH_RESERVE and VMCORE_INFO out from CRASH_CORE, cleaning
up the dependency of FA_DMUMP on CRASH_DUMP, and moving crash codes from
kexec_core.c to crash_core.c, now we can rearrange CRASH_DUMP to
depend on KEXEC_CORE, and make CRASH_DUMP select CRASH_RESERVE and
VMCORE_INFO.
KEXEC_C
In kdump kernel, /proc/vmcore is an elf file mapping the crashed kernel's
old memory content. Its elf header is constructed in 1st kernel and passed
to kdump kernel via elfcorehdr_addr. Config CRASH_DUMP enables the code
of 1st kernel's old memory accessing in different architectures.
Currently, c
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.
And also update the old ifdeffery of CONFIG_CRASH_CORE, including of
and config item dependency on CRASH_CORE
accordingly.
And also
Both kdump and fa_dump of ppc rely on crashkernel reservation. Move the
relevant codes into separate files:
crash_reserve.c, include/linux/crash_reserve.h.
And also add config item CRASH_RESERVE to control its enabling of the
codes. And update config items which has relationship with crashkernel
r
Motivation:
=
Previously, LKP reported a building error. When investigating, it can't
be resolved reasonablly with the present messy kdump config items.
https://lore.kernel.org/oe-kbuild-all/202312182200.ka7mzifq-...@intel.com/
The kdump (crash dumping) related config items could cau
On 1/23/24 21:54, Stefan Berger wrote:
On 1/22/24 13:37, Tushar Sugandhi wrote:
Refactor ima_dump_measurement_list() to move the memory allocation part
to a separate function ima_alloc_kexec_file_buf() which allocates buffer
of size 'kexec_segment_size' at kexec 'load'. Make the local vari
On 1/22/24 13:37, Tushar Sugandhi wrote:
Refactor ima_dump_measurement_list() to move the memory allocation part
to a separate function ima_alloc_kexec_file_buf() which allocates buffer
of size 'kexec_segment_size' at kexec 'load'. Make the local variable
ima_kexec_file in function ima_dump_m
On 1/23/24 16:19, Tushar Sugandhi wrote:
Thanks again Stefan for taking a look.
On 1/23/24 11:02, Stefan Berger wrote:
On 1/22/24 13:38, Tushar Sugandhi wrote:
The extra memory allocated for carrying the IMA measurement list across
kexec is hardcoded as half a PAGE. Make it configurable.
Thanks again Stefan for taking a look.
On 1/23/24 11:02, Stefan Berger wrote:
On 1/22/24 13:38, Tushar Sugandhi wrote:
The extra memory allocated for carrying the IMA measurement list across
kexec is hardcoded as half a PAGE. Make it configurable.
Define a Kconfig option, IMA_KEXEC_EXTRA_ME
On 1/23/24 10:18, Stefan Berger wrote:
On 1/22/24 13:38, Tushar Sugandhi wrote:
New measurements added to the IMA log while the log is being copied
during the kexec 'execute' may not get copied over. This can cause the
measurement log to be out of sync with the IMA TPM PCR, which could
I
Thanks Stefan for taking a look.
On 1/23/24 09:03, Stefan Berger wrote:
On 1/22/24 13:37, Tushar Sugandhi wrote:
Implement kimage_map_segment() to enable mapping of IMA buffer source
pages to the kimage structure post kexec 'load'. This function,
accepting a kimage pointer, an address, and a
On 1/22/24 13:38, Tushar Sugandhi wrote:
The extra memory allocated for carrying the IMA measurement list across
kexec is hardcoded as half a PAGE. Make it configurable.
Define a Kconfig option, IMA_KEXEC_EXTRA_MEMORY_KB, to configure the
extra memory (in kb) to be allocated for IMA measurem
On 1/22/24 13:38, Tushar Sugandhi wrote:
New measurements added to the IMA log while the log is being copied
during the kexec 'execute' may not get copied over. This can cause the
measurement log to be out of sync with the IMA TPM PCR, which could
It could be out of sync with any PCR that I
On 1/22/24 13:37, Tushar Sugandhi wrote:
Implement kimage_map_segment() to enable mapping of IMA buffer source
pages to the kimage structure post kexec 'load'. This function,
accepting a kimage pointer, an address, and a size, will gather the
source pages within the specified address range, c
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 crash kernel to capture the
kernel; hence, it needs to
On 11/01/24 4:21 pm, Sourabh Jain wrote:
Due to CPU/Memory hotplug or online/offline events, the elfcorehdr
(which describes the CPUs and memory of the crashed kernel) and FDT
(Flattened Device Tree) of kdump image becomes outdated. Consequently,
attempting dump collection with an outdated elf
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