The build_arch field in s390 DASD dump header has originally been used to
indicate whether the dump tool has been built on s390 or s390x system.
Since no other architectures but s390x are supported for Linux on z, do
not process build_arch attribute. Bail out if any build architecture other
than ARCH_64 has been detected in s390_ext or s390mv_ext DASD dump header.
Remove build architecture line from 'zgetdump -i' output:
Build arch.........: s390x (64 bit)
The man file for zgetdump is updated accordingly.
Signed-off-by: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Reviewed-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
- Initialize dump and dump-tool architecture to DFI_ARCH_64 at the start
of dfi_init() and dt_init() respectively.
- Bail out if any dump architecture other than ARCH_64 has been detected
in s390_ext or s390mv_ext DASD dump header.
- Remove redundant dfi_arch_set() and dt_arch_set() functions.
- Get rid of l.arch local variables in dfi* and dt* source files and
drop dfi_arch() function.
- Drop the usage of DFI_ARCH_32 and compeletely remove DFI_ARCH_UNKNOWN.
- Drop special register and lowcore processing functions used
for DFI_ARCH_32.
- Drop df_s390_from_dfi_arch() and df_s390_to_dfi_arch() funcitons.
- Update the man file for zgetdump.
Signed-off-by: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Reviewed-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Since DASD standalone dumper does not support non-extended s390
multi-volume dumps for years, drop zgetdump support of non-extended s390_mv
DASD dumps and dump-tools:
- Merge dfi_s390mv_ext and dt_s390mv_ext with related dfi_s390mv and
dt_s390mv counterparts.
- Update DFI and DT vectors of supported dump formats and dump-tools
removing dfi_s390mv and dt_s390mv entries and keeping dt_s390mv_ext and
dfi_s390mv_ext ones for s390_mv extended dump and dump-tool accordingly.
- Remove dfi_s390mv.c and dt_s390mv.c sources and update the Makefile.
- Make dfi_s390mv_ext_init() and dfi_s390mv_info() static.
- Remove magic number relevant to non-extended s390_mv DASD dumper.
- Completely drop DASD dumper version 5 case in df_s390_dumper_read().
Note: Since non-extended s390 multi-volume dumps can reside on DASD
partitions only and cannot be produced via DFO interface, we can drop this
dump format entirely.
Signed-off-by: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Reviewed-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Update verbose 'zgetdump -i' output with zlib info (internal zlib version
and zlib compression unit size).
The following new entriees are to be dispalyed:
Zlib version.......: 1
Zlib compression unit: 1 MB
Signed-off-by: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Reviewed-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Add support for vmdump 64big format to the zgetdump utility.
The result is an elf file suitable for tool crash.
This patch adds file dfi_vmdump.c to handle conversion from
z/VM vmdump format to the internal memory representation of this tool.
Therefore both output formats elf and s390 are supported as target
of the conversion.
The vmdump file formats 32bit and 64bit are not supported anymore.
They have been obsolete since CP version 5.1 (end of service since
30-Sep-2009).
Vector register set is not part of a vmdump file and can not be
displayed.
Output before:
# zgetdump ~/vmdump-0383
zgetdump: No valid dump found on "/root/vmdump-0383"
#
Output after:
# ./zgetdump ~/vmdump-0383 ~/vmdump-0383.elf
Format Info:
Source: vmdump
Target: elf
Copying dump:
00000000 / 00000379 MB
00000379 / 00000379 MB
Success: Dump has been copied
# file ~/vmdump-0383.elf
/root/vmdump-0383.elf: ELF 64-bit MSB core file, IBM S/390, version 1 \
.... (SYSV), SVR4-style, from 'vmlinux'
#
# ./zgetdump -i ~/vmdump-0383
General dump info:
Dump format........: vmdump
Version............: 2
UTS node name......: s8360046.lnxne.boe
UTS kernel release.: 6.1.0-rc2-d-perf+
UTS kernel version.: #1 SMP Fri Oct 28 09:42:13 CEST 2022
System arch........: s390x (64 bit)
CPU count (online).: 2
CPU count (real)...: 2
Dump memory range..: 2048 MB
Memory map:
0000000000000000 - 000000007fffffff (2048 MB)
#
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Reviewed-by: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
Sometimes dumping a virtual machine from the outside is the only way to
get the data that is needed. This can be the case if a dumping mechanism
like kdump hasn't been configured or data needs to be fetched at a
specific point. Dumping a protected guest from the outside without help
from FW/HW doesn't yield sufficient data to be useful. Hence we have
introduced Protected Virtualization (PV) dump support - also named
confidential dump support.
The confidential dump support works by integrating the firmware into the
dump process. New Ultravisor calls (UVC) are used to initiate the dump
process, dump CPU data, dump memory state and lastly complete the dump
process. The guest's data is fully encrypted and can only be decrypted
by the entity that owns the customer communication key (CCK) for the
dumped guest. The output format is very similar the normal s390 vmcore
ELF format, it's only enriched by new sections where the returned data
from the UVC "Complete Configuration Dump" and the UVC "Dump
Configuration Storage State" is stored. The encrypted CPU data is stored
in a new note type `NT_S390_PV_CPU_DATA`. The old note types do still
exists but without any confidential data stored. The memory data is
stored in the LOAD segment as usual but for PV dumps it's fully AES-XTS
encrypted.
This commit adds support for reading/decrypting PV guest dumps to
zgetdump by introducing a new DFI input module (`dfi_pv_elf.c`). For
specifying the customer communication key a new command line option
`--key` is added.
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Add guarded storage registers support for the ELF input and the ELF output
format. See `man 2 s390_guarded_storage` for details about guarded storage.
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Don't include dfi_mem_chunk.h in dfi.h because not every module including
dfi.h needs it.
Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Get rid of C headers which include everything. This is bad for testing and
maintainability. C files should include only what they need and no more.
Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Create a separate C header for DFI VMCOREINFO to separate
independent things and make it more readable.
Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
The keyword extern is redundant for function declarations in C headers.
Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Add 'Dump file size' field for zgetdump -i output to show the actual size
of dump file in s390 extended format on disk in megabytes.
Signed-off-by: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Update zgetdump tool to process dumps of the new s390 extended format.
Signed-off-by: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
When dump is not complete or dump memory limit is set, zgetdump might end up
with the Segfault on reading Vector Registers. That might take place when
the Vector Registers save area is beyond the dump memory limit.
Signed-off-by: Mikhail Zaslonko <zaslonko@linux.vnet.ibm.com>
Reviewed-by: Philipp Rudo <prudo@linux.vnet.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is based on the s390-tools-1.39.0 version.
Changes on top of s390-tools-1.39.0:
- Add MIT license to all source files
- Add LICENSE file
- Transform REAMDE to README.md (markdown)
- Add AUTHORS.md file
- Add CONTRIBUTING.md file
- Move changelog from README to CHANGELOG.md file
Reviewed-by: Stefan Haberland <sth@linux.vnet.ibm.com>
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
