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f94de4f17b5698b2bf011367b955ea7374b26ba4
linux/arch/s390/include/asm
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David Hildenbrand 82a0fcb1ad s390/kdump: Provide is_kdump_kernel() implementation 
s390 sets "elfcorehdr_addr = ELFCORE_ADDR_MAX;" early during
setup_arch() to deactivate the "elfcorehdr= kernel" parameter,
resulting in is_kdump_kernel() returning "false".

During vmcore_init()->elfcorehdr_alloc(), if on a dump kernel and
allocation succeeded, elfcorehdr_addr will be set to a valid address
and is_kdump_kernel() will consequently return "true".

is_kdump_kernel() should return a consistent result during all boot
stages, and properly return "true" if in a kdump environment - just
like it is done on powerpc where "false" is indicated in fadump
environments, as added in commit b098f1c323 ("powerpc/fadump: make
is_kdump_kernel() return false when fadump is active").

Similarly provide a custom is_kdump_kernel() implementation that will only
return "true" in kdump environments, and will do so consistently during
boot.

Update the documentation of dump_available().

Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Link: https://lore.kernel.org/r/20241023090651.1115507-1-david@redhat.com
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2024-10-25 16:03:23 +02:00
..
trace
s390/hiperdispatch: Add trace events
2024-08-29 22:56:35 +02:00
vdso
s390/vdso: Wire up getrandom() vdso implementation
2024-09-13 20:57:31 +02:00
abs_lowcore.h
s390: Add infrastructure to patch lowcore accesses
2024-07-23 16:02:32 +02:00
access-regs.h
s390/acrs: cleanup access register handling
2024-02-12 15:03:33 +01:00
airq.h
s390/airq: remove lsi_mask from airq_struct
2023-08-30 11:03:28 +02:00
alternative.h
s390/alternatives: Remove ALT_FACILITY_EARLY
2024-09-13 17:28:36 +02:00
ap.h
s390/chsc: use notifier for AP configuration changes
2024-04-09 17:29:55 +02:00
appldata.h
s390/appldata: fix virtual vs physical address confusion
2024-02-09 13:58:13 +01:00
arch_hweight.h
s390: Use MARCH_HAS_*_FEATURES defines
2024-09-07 17:12:42 +02:00
archrandom.h
Merge tag 'random-6.0-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random
2022-08-02 17:31:35 -07:00
asm-const.h
s390/kernel: unify EX_TABLE* implementations
2020-07-20 10:55:45 +02:00
asm-extable.h
s390: add support for DCACHE_WORD_ACCESS
2023-10-16 13:04:09 +02:00
asm-prototypes.h
s390/expoline: Make modules use kernel expolines
2024-04-17 13:38:03 +02:00
atomic_ops.h
s390: Use MARCH_HAS_*_FEATURES defines
2024-09-07 17:12:42 +02:00
atomic.h
s390/atomic: mark all functions __always_inline
2024-04-03 15:00:19 +02:00
barrier.h
s390: Use MARCH_HAS_*_FEATURES defines
2024-09-07 17:12:42 +02:00
bitops.h
s390: Provide optimized __arch_hweight*() implementations
2024-06-24 11:12:39 +02:00
boot_data.h
…
bug.h
s390/bug: remove entry size from __bug_table section
2024-02-14 13:50:53 +01:00
cache.h
treewide: Convert macro and uses of __section(foo) to __section("foo")
2020-10-25 14:51:49 -07:00
ccwdev.h
driver core: have match() callback in struct bus_type take a const *
2024-07-03 15:16:54 +02:00
ccwgroup.h
treewide: Replace zero-length arrays with flexible-array members
2022-02-17 07:00:39 -06:00
checksum.h
s390/checksum: add a KMSAN check
2024-07-03 19:30:24 -07:00
chpid.h
…
chsc.h
s390/chsc: use notifier for AP configuration changes
2024-04-09 17:29:55 +02:00
cio.h
s390/virtio_ccw: use DMA handle from DMA API
2024-03-13 09:23:46 +01:00
clocksource.h
s390: convert to GENERIC_VDSO
2020-08-26 18:47:21 +02:00
clp.h
s390/pci: Implement ioremap_wc/prot() with MIO
2020-09-14 10:30:07 +02:00
cmb.h
…
cmpxchg.h
arch: Remove cmpxchg_double
2023-06-05 09:36:39 +02:00
compat.h
s390/uapi: cover statfs padding by growing f_spare
2023-05-17 15:20:17 +02:00
cpacf.h
s390/crypto: Add Support for Query Authentication Information
2024-09-12 14:13:27 +02:00
cpcmd.h
…
cpu_mf-insn.h
…
cpu_mf.h
s390/cpumf: unpoison STCCTM output buffer
2024-07-03 19:30:24 -07:00
cpu.h
s390: add support for BEAR enhancement facility
2021-10-26 15:21:29 +02:00
cpufeature.h
s390/uvdevice: autoload module based on CPU facility
2022-07-19 16:18:49 +02:00
cputime.h
s390/idle: remove arch_cpu_idle_time() and corresponding code
2023-02-09 20:11:23 +01:00
crw.h
s390: remove invalid email address of Heiko Carstens
2022-02-06 23:31:29 +01:00
css_chars.h
s390/cio: Add new Operation Code OC3 to PNSO
2020-09-15 13:21:46 -07:00
ctlreg.h
s390/wti: Introduce infrastructure for warning track interrupt
2024-08-29 22:56:34 +02:00
current.h
s390: Replace S390_lowcore by get_lowcore()
2024-06-18 17:01:33 +02:00
dat-bits.h
s390/kvm: Move bitfields for dat tables
2024-07-10 19:50:45 +02:00
debug.h
docs: move s390 under arch
2023-07-24 12:12:24 +02:00
delay.h
s390/delay: remove udelay_simple()
2020-12-16 14:55:49 +01:00
diag.h
s390/wti: Introduce infrastructure for warning track interrupt
2024-08-29 22:56:34 +02:00
dis.h
…
dma-types.h
s390/mm: provide simple ARCH_HAS_DEBUG_VIRTUAL support
2024-03-13 09:23:49 +01:00
dma.h
s390/mm: fix MAX_DMA_ADDRESS physical vs virtual confusion
2023-09-05 20:12:51 +02:00
dwarf.h
s390/vdso: Add CFI for RA register to asm macro vdso_func
2024-04-26 16:22:38 +02:00
eadm.h
s390/cio: use bitwise types to allow for type checking
2024-03-13 09:23:46 +01:00
ebcdic.h
…
elf.h
s390/hwcaps: Add documentation for HWCAP flags
2024-07-02 10:17:16 +02:00
entry-common.h
randomize_kstack: Remove non-functional per-arch entropy filtering
2024-06-28 08:54:56 -07:00
exec.h
…
extable.h
s390/extable: convert to relative table with data
2022-03-08 00:33:00 +01:00
extmem.h
s390/boot: Consider DCSS segments on memory layout setup
2024-04-17 13:37:59 +02:00
facility.h
s390/facilities: Fix warning about shadow of global variable
2024-10-10 15:32:43 +02:00
fault.h
s390/mm: move translation-exception identification structure to fault.h
2023-10-23 18:21:22 +02:00
fcx.h
s390/cio: use bitwise types to allow for type checking
2024-03-13 09:23:46 +01:00
fpu-insn-asm.h
s390/vdso: Wire up getrandom() vdso implementation
2024-09-13 20:57:31 +02:00
fpu-insn.h
s390/fpu: add vector instruction inline assemblies for crc32
2024-02-16 14:30:18 +01:00
fpu-types.h
s390/checksum: provide vector register variant of csum_partial()
2024-02-16 14:30:17 +01:00
fpu.h
s390/fpu: limit save and restore to used registers
2024-02-16 14:30:16 +01:00
ftrace.h
s390/ftrace: Avoid calling unwinder in ftrace_return_address()
2024-08-27 20:16:48 +02:00
ftrace.lds.h
s390/ftrace: implement hotpatching
2021-08-03 14:31:40 +02:00
futex.h
s390/futex: add missing EX_TABLE entry to __futex_atomic_op()
2022-10-26 14:47:31 +02:00
gmap.h
s390/mm: Re-enable the shared zeropage for !PV and !skeys KVM guests
2024-04-18 15:02:53 +02:00
hardirq.h
s390: Replace S390_lowcore by get_lowcore()
2024-06-18 17:01:33 +02:00
hiperdispatch.h
s390/hiperdispatch: Introduce hiperdispatch
2024-08-29 22:56:35 +02:00
hugetlb.h
mm: provide mm_struct and address to huge_ptep_get()
2024-07-12 15:52:15 -07:00
hw_irq.h
…
idals.h
s390/cio,idal: fix virtual vs physical address confusion
2024-03-13 09:23:47 +01:00
idle.h
s390/irq,idle: simplify idle check
2023-02-15 11:07:01 +01:00
io.h
s390: Stop using weak symbols for __iowrite64_copy()
2024-04-22 17:11:20 -03:00
ipl.h
s390/ipl: add eckd dump support
2022-12-06 16:18:22 +01:00
irq_work.h
arch: consolidate arch_irq_work_raise prototypes
2023-11-23 11:32:29 +01:00
irq.h
s390/wti: Introduce infrastructure for warning track interrupt
2024-08-29 22:56:34 +02:00
irqflags.h
s390/irqflags: do not instrument arch_local_irq_*() with KMSAN
2024-07-03 19:30:25 -07:00
isc.h
…
itcw.h
…
jump_label.h
work around gcc bugs with 'asm goto' with outputs
2024-02-09 15:57:48 -08:00
kasan.h
s390/kasan: move shadow mapping to decompressor
2023-03-20 11:02:51 +01:00
Kbuild
arch, mm: move definition of node_data to generic code
2024-09-03 21:15:28 -07:00
kdebug.h
exit: Remove calls of do_exit after noreturn versions of die
2021-10-20 13:09:47 -05:00
kexec.h
s390/kdump: Provide is_kdump_kernel() implementation
2024-10-25 16:03:23 +02:00
kfence.h
s390/mm: make virt_to_pfn() a static inline
2023-08-16 15:13:03 +02:00
kmsan.h
s390/kmsan: Fix merge conflict with get_lowcore() introduction
2024-07-23 16:01:51 +02:00
kprobes.h
kprobes: unify kprobes_exceptions_nofify() prototypes
2023-11-10 19:59:05 +09:00
kvm_host.h
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
2024-07-20 12:41:03 -07:00
kvm_para.h
KVM: s390: generate kvm hypercall functions
2021-08-25 11:03:35 +02:00
linkage.h
s390: make use of CONFIG_FUNCTION_ALIGNMENT
2023-03-20 11:12:46 +01:00
lowcore.h
s390/entry: Unify save_area_sync and save_area_async
2024-08-29 22:56:34 +02:00
maccess.h
s390/mm: define Real Memory Copy size and mask macros
2023-08-16 15:13:02 +02:00
march.h
s390: Provide MARCH_HAS_*_FEATURES defines
2024-09-07 17:12:42 +02:00
mem_encrypt.h
s390/mm: fix virtual-physical address confusion for swiotlb
2022-11-07 14:33:40 +01:00
mmu_context.h
s390: Replace S390_lowcore by get_lowcore()
2024-06-18 17:01:33 +02:00
mmu.h
s390/mm: Re-enable the shared zeropage for !PV and !skeys KVM guests
2024-04-18 15:02:53 +02:00
module.h
s390/module: Provide find_section() helper
2024-09-13 17:28:36 +02:00
msi.h
irq/s390: Add arch_is_isolated_msi() for s390
2023-01-11 16:27:23 -04:00
nmi.h
s390/mcck: cleanup user process termination path
2023-02-28 13:19:05 +01:00
nospec-branch.h
s390/nospec: Push down alternative handling
2024-07-23 16:02:31 +02:00
nospec-insn.h
s390/expoline: Make modules use kernel expolines
2024-04-17 13:38:03 +02:00
numa.h
…
os_info.h
s390/os_info: Fix array size in struct os_info
2024-04-29 17:33:29 +02:00
page-states.h
s390/cmma: move arch_set_page_dat() to header file
2023-11-05 22:34:58 +01:00
page.h
s390/uv: drop arch_make_page_accessible()
2024-09-01 20:25:53 -07:00
pai.h
s390: Replace S390_lowcore by get_lowcore()
2024-06-18 17:01:33 +02:00
pci_clp.h
s390/pci: Expose FIDPARM attribute in sysfs
2024-10-10 15:32:44 +02:00
pci_debug.h
s390/pci: add error record for CC 2 retries
2022-04-25 13:54:15 +02:00
pci_dma.h
s390/pci: Use dma-iommu layer
2023-10-02 08:43:00 +02:00
pci_insn.h
KVM: s390: pci: do initial setup for AEN interpretation
2022-07-11 09:54:28 +02:00
pci_io.h
s390/pci: Align prototypes of zpci IO memcpy functions
2024-10-16 11:33:06 +02:00
pci.h
s390/pci: Expose FIDPARM attribute in sysfs
2024-10-10 15:32:44 +02:00
percpu.h
s390: Use MARCH_HAS_*_FEATURES defines
2024-09-07 17:12:42 +02:00
perf_event.h
s390/cpum_cf: Move defines from header file to source file
2024-08-07 20:52:53 +02:00
pfault.h
s390/pfault: cleanup inline assemblies
2023-07-29 14:57:18 +02:00
pgalloc.h
s390: supplement for ptdesc conversion
2024-03-06 13:04:18 -08:00
pgtable.h
mm: always define pxx_pgprot()
2024-09-17 01:06:59 -07:00
physmem_info.h
s390/boot: Do not rescue .vmlinux.relocs section
2024-04-17 13:38:02 +02:00
pkey.h
s390/pkey: Rework and split PKEY kernel module code
2024-08-29 22:56:33 +02:00
pnet.h
…
preempt.h
s390: Use MARCH_HAS_*_FEATURES defines
2024-09-07 17:12:42 +02:00
processor.h
s390/smp: Add cpu capacities
2024-08-29 22:56:35 +02:00
ptrace.h
s390/entry: compare gmap asce to determine guest/host fault
2024-03-17 19:08:50 +01:00
purgatory.h
…
qdio.h
s390/cio: use bitwise types to allow for type checking
2024-03-13 09:23:46 +01:00
runtime_instr.h
…
runtime-const.h
s390: Add runtime constant support
2024-07-23 15:54:58 +02:00
rwonce.h
s390/rwonce: add READ_ONCE_ALIGNED_128() macro
2023-02-28 13:19:05 +01:00
schid.h
…
sclp.h
s390/wti: Introduce infrastructure for warning track interrupt
2024-08-29 22:56:34 +02:00
scsw.h
s390/cio: use bitwise types to allow for type checking
2024-03-13 09:23:46 +01:00
seccomp.h
s390: Enable seccomp architecture tracking
2020-11-20 11:16:35 -08:00
sections.h
s390/amode31: change type of __samode31, __eamode31, etc
2023-08-30 11:03:27 +02:00
set_memory.h
s390/pageattr: Implement missing kernel_page_present()
2024-10-25 16:03:23 +02:00
setup.h
s390/setup: Recognize sequential instruction fetching facility
2024-08-29 22:56:34 +02:00
signal.h
…
sigp.h
s390/sigp: use register pair instead of register asm
2021-06-18 16:41:22 +02:00
smp.h
s390/smp: Add cpu capacities
2024-08-29 22:56:35 +02:00
softirq_stack.h
s390: Replace S390_lowcore by get_lowcore()
2024-06-18 17:01:33 +02:00
sparsemem.h
…
spinlock_types.h
locking: Allow to include asm/spinlock_types.h from linux/spinlock_types_raw.h
2021-12-07 15:14:12 +01:00
spinlock.h
s390/alternatives: Rework to allow for callbacks
2024-07-23 16:02:31 +02:00
stacktrace.h
s390/entry: Pass the asce as parameter to sie64a()
2024-07-10 19:50:45 +02:00
stp.h
s390/stp: fix todoff size
2022-05-11 14:40:57 +02:00
string.h
s390/string: add KMSAN support
2024-07-03 19:30:25 -07:00
syscall_wrapper.h
posix-timers: Get rid of [COMPAT_]SYS_NI() uses
2023-12-20 21:30:27 -08:00
syscall.h
arch: remove unused function syscall_set_arguments()
2021-09-14 16:06:20 +02:00
sysinfo.h
s390/sysinfo: add variable capacity information
2023-11-22 14:07:28 +01:00
text-patching.h
s390: introduce text_poke_sync()
2021-10-11 20:55:58 +02:00
thread_info.h
s390/entry: Move SIE indicator flag to thread info
2024-07-23 16:02:31 +02:00
timex.h
s390: Replace S390_lowcore by get_lowcore()
2024-06-18 17:01:33 +02:00
tlb.h
mm/mmu_gather: add __tlb_remove_folio_pages()
2024-02-22 15:27:17 -08:00
tlbflush.h
s390: convert ".insn" encoding to instruction names
2022-03-10 15:58:17 +01:00
topology.h
s390/smp: Add cpu capacities
2024-08-29 22:56:35 +02:00
tpi.h
KVM: s390: pci: enable host forwarding of Adapter Event Notifications
2022-07-11 09:54:29 +02:00
types.h
s390: introduce register pair union
2021-06-18 16:41:21 +02:00
uaccess.h
s390/uaccess: Make s390_kernel_write() usable for decompressor
2024-07-23 16:02:31 +02:00
unistd.h
clone3: drop __ARCH_WANT_SYS_CLONE3 macro
2024-07-10 14:23:38 +02:00
unwind.h
s390/kprobes: replace kretprobe with rethook
2023-01-22 18:42:35 +01:00
uprobes.h
…
user.h
asm/user.h: killed unused macros
2022-01-30 21:17:00 -05:00
uv.h
s390/uv: Panic for set and remove shared access UVC errors
2024-08-07 11:04:43 +00:00
vdso-symbols.h
s390/vdso: Move vdso symbol handling to separate header file
2024-09-13 17:28:36 +02:00
vdso.h
s390/vdso: Move vdso symbol handling to separate header file
2024-09-13 17:28:36 +02:00
vmalloc.h
…
vmlinux.lds.h
…
vtime.h
s390/vtime: Remove duplicate get_lowcore() calls
2024-06-18 17:01:33 +02:00
vtimer.h
s390: remove orphaned function declarations
2020-09-30 12:09:54 +02:00
word-at-a-time.h
kernel.h: removed REPEAT_BYTE from kernel.h
2024-02-01 09:47:59 -08:00
xor.h
…