Mukesh Kumar Chaurasiya d7a6797e0b powerpc: add exit_flags field in pt_regs ...

Add a new field `exit_flags` in the pt_regs structure. This field will hold
the flags set during interrupt or syscall execution that are required during
exit to user mode.

Specifically, the `TIF_RESTOREALL` flag, stored in this field, helps the
exit routine determine if any NVGPRs were modified and need to be restored
before returning to userspace.

This addition ensures a clean and architecture-specific mechanism to track
per-syscall or per-interrupt state transitions related to register restore.

Changes:
 - Add `exit_flags` and `__pt_regs_pad` to maintain 16-byte stack alignment
 - Update asm-offsets.c and ptrace.c for offset and validation
 - Update PT_* constants in uapi header to reflect the new layout

Signed-off-by: Mukesh Kumar Chaurasiya <mchauras@linux.ibm.com>
Tested-by: Samir M <samir@linux.ibm.com>
Tested-by: David Gow <davidgow@google.com>
Tested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com>
Reviewed-by: Shrikanth Hegde <sshegde@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260427122742.210074-6-mkchauras@gmail.com

2026-05-20 06:57:14 +05:30

..

ptrace

powerpc: add exit_flags field in pt_regs

2026-05-20 06:57:14 +05:30

syscalls

rseq: Implement sys_rseq_slice_yield()

2026-01-22 11:11:17 +01:00

trace

powerpc64/ftrace: workaround clang recording GEP in __patchable_function_entries

2026-03-07 16:02:25 +05:30

vdso

powerpc/vdso: Drop -DCC_USING_PATCHABLE_FUNCTION_ENTRY from 32-bit flags with clang

2026-05-06 07:45:59 +05:30

.gitignore

.gitignore: add SPDX License Identifier

2020-03-25 11:50:48 +01:00

85xx_entry_mapping.S

powerpc: Remove CONFIG_FSL_BOOKE

2022-09-26 22:47:37 +10:00

align.c

powerpc/align: Convert emulate_spe() to scoped user access

2026-04-01 09:21:07 +05:30

asm-offsets.c

powerpc/32s: Fix segments setup when TASK_SIZE is not a multiple of 256M

2026-01-07 09:31:04 +05:30

audit_32.h

powerpc: address missing-prototypes warnings

2023-08-02 22:22:19 +10:00

btext.c

kernel.h: drop hex.h and update all hex.h users

2026-01-20 19:44:19 -08:00

cacheinfo.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

cacheinfo.h

powerpc/cacheinfo: add cacheinfo_teardown, cacheinfo_rebuild

2019-06-15 16:52:06 +10:00

cpu_setup_6xx.S

powerpc: rename SPRN_HID2 define to SPRN_HID2_750FX

2024-05-08 00:25:00 +10:00

cpu_setup_44x.S

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30 11:26:32 -07:00

cpu_setup_e500.S

powerpc/32: Fix objtool unannotated intra-function call warnings

2022-11-18 19:00:06 +11:00

cpu_setup_pa6t.S

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333

2019-06-05 17:37:06 +02:00

cpu_setup_power.c

powerpc/dexcr: Add initial Dynamic Execution Control Register (DEXCR) support

2023-06-19 17:36:25 +10:00

cpu_setup_ppc970.S

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30 11:26:32 -07:00

cpu_specs_8xx.h

powerpc/cputable: Split cpu_specs[] out of cputable.h

2022-09-26 22:47:13 +10:00

cpu_specs_44x.h

powerpc/cputable: Split cpu_specs[] out of cputable.h

2022-09-26 22:47:13 +10:00

cpu_specs_47x.h

powerpc/cputable: Split cpu_specs[] out of cputable.h

2022-09-26 22:47:13 +10:00

cpu_specs_85xx.h

powerpc/cputable: Split cpu_specs[] for mpc85xx and e500mc

2022-09-26 23:00:05 +10:00

cpu_specs_book3s_32.h

powerpc/cputable: Split cpu_specs[] out of cputable.h

2022-09-26 22:47:13 +10:00

cpu_specs_book3s_64.h

powerpc: Add Power11 architected and raw mode

2024-02-21 23:11:00 +11:00

cpu_specs_e500mc.h

powerpc/cputable: Add missing PPC_FEATURE_BOOKE on PPC64 Book-E

2024-02-14 14:24:06 +11:00

cpu_specs.h

powerpc: Remove core support for 40x

2024-06-28 22:28:47 +10:00

cputable.c

powerpc: Make cpu_spec __ro_after_init

2023-11-27 22:01:14 +11:00

crash_dump.c

asm-generic: introduce text-patching.h

2024-11-07 14:25:15 -08:00

dawr.c

powerpc: Include asm/firmware.h in all users of firmware_has_feature()

2022-06-29 16:45:05 +10:00

dbell.c

powerpc/64: Fix perf profiling asynchronous interrupt handlers

2023-01-30 20:07:42 +11:00

dexcr.c

powerpc/dexcr: Add DEXCR prctl interface

2024-05-06 22:04:31 +10:00

dma-iommu.c

powerpc/powernv/iommu: iommu incorrectly bypass DMA APIs

2026-04-01 22:08:55 +05:30

dma-mask.c

dma-mapping: move arch_dma_set_mask() declaration to header

2023-07-31 17:54:28 +02:00

dma-swiotlb.c

swiotlb: add a SWIOTLB_ANY flag to lift the low memory restriction

2022-04-18 07:21:12 +02:00

dt_cpu_ftrs.c

mm/memblock: add memblock_alloc_or_panic interface

2025-01-25 20:22:38 -08:00

early_32.c

powerpc: Move C prototypes out of asm-prototypes.h

2022-03-08 22:06:25 +11:00

eeh_cache.c

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21 01:02:28 -08:00

eeh_driver.c

powerpc/eeh: fix recursive pci_lock_rescan_remove locking in EEH event handling

2026-01-08 17:56:53 +05:30

eeh_event.c

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21 01:02:28 -08:00

eeh_pe.c

powerpc/eeh: fix recursive pci_lock_rescan_remove locking in EEH event handling

2026-01-08 17:56:53 +05:30

eeh_sysfs.c

powerpc: Add missing headers

2022-05-08 22:15:40 +10:00

eeh.c

powerpc/eeh: Export eeh_unfreeze_pe()

2025-07-26 13:07:52 +05:30

entry_32.S

powerpc/32: Restore disabling of interrupts at interrupt/syscall exit

2025-12-22 18:25:07 +05:30

epapr_hcalls.S

powerpc/4xx: Remove CONFIG_BOOKE_OR_40x

2024-06-28 22:28:48 +10:00

epapr_paravirt.c

asm-generic: introduce text-patching.h

2024-11-07 14:25:15 -08:00

exceptions-64e.S

powerpc/64e: drop unused TLB miss handlers

2024-07-12 15:52:15 -07:00

exceptions-64s.S

powerpc/cell: Remove support for IBM Cell Blades

2025-02-26 21:15:07 +05:30

fadump.c

powerpc: fadump: pair alloc_pages_exact() with free_pages_exact()

2026-04-01 11:19:45 +03:00

firmware.c

powerpc: Export kvm_guest static key, for bcachefs six locks

2024-01-01 11:47:38 -05:00

fpu.S

powerpc: Don't clobber f0/vs0 during fp|altivec register save

2023-11-28 23:04:43 +11:00

head_8xx.S

powerpc/8xx: Remove left-over instruction and comments in DataStoreTLBMiss handler

2025-09-15 13:48:22 +05:30

head_32.h

powerpc: Remove core support for 40x

2024-06-28 22:28:47 +10:00

head_44x.S

powerpc/44x: Introduce _PAGE_READ and remove _PAGE_USER

2023-10-19 17:12:46 +11:00

head_64.S

powerpc/64s: Fix unnecessary copy to 0 when kernel is booted at address 0

2024-06-23 11:54:13 +10:00

head_85xx.S

powerpc/e500: Always use 64 bits PTE

2026-03-04 11:05:06 +05:30

head_book3s_32.S

powerpc/32s: Fix segments setup when TASK_SIZE is not a multiple of 256M

2026-01-07 09:31:04 +05:30

head_booke.h

powerpc: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers

2025-09-01 13:23:29 +05:30

hw_breakpoint_constraints.c

powerpc/watchpoint: Disable pagefaults when getting user instruction

2023-09-18 12:23:47 +10:00

hw_breakpoint.c

powerpc/watchpoints: Annotate atomic context in more places

2023-09-18 12:23:47 +10:00

idle_6xx.S

powerpc/mm: Switch obsolete dssall to .long

2021-12-23 22:35:13 +11:00

idle_64e.S

powerpc: add ISA v3.0 / v3.1 wait opcode macro

2022-09-28 19:22:10 +10:00

idle_85xx.S

powerpc: Cleanup idle for e500

2022-09-26 23:00:14 +10:00

idle_book3s.S

powerpc/idle: Don't corrupt back chain when going idle

2021-10-20 21:37:58 +11:00

idle.c

treewide: const qualify ctl_tables where applicable

2025-01-28 13:48:37 +01:00

ima_arch.c

powerpc/ima: Drop unnecessary check for CONFIG_MODULE_SIG

2026-03-08 08:26:08 -04:00

interrupt_64.S

powerpc/64: Set task pt_regs->link to the LR value on scv entry

2024-02-05 22:43:19 +11:00

interrupt.c

powerpc: rename arch_irq_disabled_regs

2026-05-20 06:57:13 +05:30

io.c

powerpc/io: Use standard barrier macros in io.c

2025-02-26 21:15:09 +05:30

iomap.c

powerpc: inline iomap accessors

2020-12-04 01:01:09 +11:00

iommu.c

powerpc/iommu: fix lockdep warning during PCI enumeration

2026-03-13 12:13:35 +05:30

irq_64.c

work around gcc bugs with 'asm goto' with outputs

2024-02-09 15:57:48 -08:00

irq.c

powerpc/irq: use seq_put_decimal_ull_width() for decimal values

2024-11-10 22:33:52 +11:00

isa-bridge.c

mm: Introduce vmap_page_range() to map pages in PCI address space

2024-03-11 16:58:10 +01:00

jump_label.c

asm-generic: introduce text-patching.h

2024-11-07 14:25:15 -08:00

kdebugfs.c

powerpc: rename powerpc_debugfs_root to arch_debugfs_dir

2021-08-13 22:04:26 +10:00

kgdb.c

powerpc: kgdb: fix kernel-doc warnings

2026-04-01 09:21:06 +05:30

kprobes-ftrace.c

kprobe/ftrace: bail out if ftrace was killed

2024-05-16 07:23:30 +09:00

kprobes.c

Merge tag 'powerpc-6.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

2024-11-23 10:44:31 -08:00

kvm_emul.S

powerpc/kvm: Add ifdefs around template code

2019-09-14 00:04:40 +10:00

kvm.c

powerpc/kvm: Fix ifdef to remove build warning

2025-08-20 14:03:44 +05:30

l2cr_6xx.S

powerpc/mm: Switch obsolete dssall to .long

2021-12-23 22:35:13 +11:00

legacy_serial.c

serial: 8250: sanitize uart_port::serial_{in,out}() types

2025-06-17 13:42:34 +02:00

Makefile

powerpc/audit: Convert powerpc to AUDIT_ARCH_COMPAT_GENERIC

2026-04-01 09:21:06 +05:30

mce_power.c

powerpc/inst: Define ppc_inst_t

2021-12-09 22:41:21 +11:00

mce.c

powerpc/mce: log the error for all unrecoverable errors

2023-02-10 22:17:34 +11:00

misc_32.S

powerpc/32: Replace mulhdu() by mul_u64_u64_shr()

2024-12-10 08:15:30 +05:30

misc_64.S

powerpc/64: Remove maple platform

2024-10-29 23:01:52 +11:00

misc.S

powerpc: replace #include <asm/export.h> with #include <linux/export.h>

2023-08-16 23:54:48 +10:00

module_32.c

asm-generic: introduce text-patching.h

2024-11-07 14:25:15 -08:00

module_64.c

powerpc64/modules: replace stub allocation sentinel with an explicit counter

2025-09-15 16:40:52 +05:30

module.c

Merge tag 'powerpc-6.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

2024-05-17 09:05:46 -07:00

msi.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30 11:26:32 -07:00

note.S

powerpc: Add PowerPC Capabilities ELF note

2019-08-30 09:40:15 +10:00

nvram_64.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

optprobes_head.S

powerpc: add definition for pt_regs offset within an interrupt frame

2022-12-02 17:54:08 +11:00

optprobes.c

asm-generic: introduce text-patching.h

2024-11-07 14:25:15 -08:00

paca.c

docs: move powerpc under arch

2023-10-10 13:35:55 -06:00

pci_32.c

mm/memblock: add memblock_alloc_or_panic interface

2025-01-25 20:22:38 -08:00

pci_64.c

powerpc/pci_64: Init pcibios subsys a bit later

2023-03-14 23:36:27 +11:00

pci_dn.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

pci_of_scan.c

powerpc/pci: Initialize msi_addr_mask for OF-created PCI devices

2026-03-03 10:29:15 -06:00

pci-common.c

PCI: Align head space better

2026-03-27 10:19:08 -05:00

pci-hotplug.c

PCI: pnv_php: Fix surprise plug detection and recovery

2025-07-26 13:09:15 +05:30

pmc.c

powerpc/85xx: Mark some functions static and add missing includes to fix no previous prototype error

2023-08-23 15:55:21 +10:00

ppc_save_regs.S

powerpc: update ppc_save_regs to save current r1 in pt_regs

2023-06-19 17:37:14 +10:00

proc_powerpc.c

powerpc: Replace strcpy() with strscpy() in proc_ppc64_init()

2025-05-15 09:54:54 +05:30

process.c

powerpc/64s: do not re-activate batched TLB flush

2026-01-20 19:24:32 -08:00

prom_entry_64.S

powerpc/64: Rename entry_64.S to prom_entry_64.S

2023-06-15 14:04:19 +10:00

prom_init_check.sh

powerpc/prom_init: Fix shellcheck warnings

2025-08-20 14:05:18 +05:30

prom_init.c

powerpc/prom_init: Fixup missing #size-cells on PowerMac media-bay nodes

2026-03-04 11:07:36 +05:30

prom_parse.c

…

prom.c

powerpc/crash: use generic crashkernel reservation

2025-03-16 22:30:48 -07:00

reloc_32.S

powerpc: Avoid link stack corruption in misc asm functions

2021-08-25 13:35:47 +10:00

reloc_64.S

powerpc/64: avoid using r13 in relocate

2022-09-28 19:22:13 +10:00

rethook.c

powerpc: Replace kretprobe code with rethook on powerpc

2024-09-05 22:25:36 +10:00

rtas_entry.S

powerpc/rtas: Fix RTAS MSR[HV] handling for Cell

2022-08-26 08:41:54 +10:00

rtas_flash.c

powerpc: rtas: use lock guard for mutex

2025-06-23 09:57:10 +05:30

rtas_pci.c

powerpc/rtas_pci: rename and properly expose config access APIs

2023-11-28 21:49:45 +11:00

rtas-proc.c

powerpc/rtas: Fix ppc_rtas_rmo_buf_show() kernel-doc

2023-11-07 13:13:45 +11:00

rtas-rtc.c

powerpc/rtas: arch-wide function token lookup conversions

2023-02-13 22:35:03 +11:00

rtas.c

powerpc/pseries: Define HVPIPE specific macros

2025-09-15 13:38:40 +05:30

rtasd.c

powerpc/pseries: Define HVPIPE specific macros

2025-09-15 13:38:40 +05:30

secure_boot.c

integrity: Make arch_ima_get_secureboot integrity-wide

2026-03-05 11:10:08 -05:00

security.c

asm-generic: introduce text-patching.h

2024-11-07 14:25:15 -08:00

secvar-ops.c

powerpc/secvar: Warn and error if multiple secvar ops are set

2023-02-12 22:12:36 +11:00

secvar-sysfs.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

setup_32.c

mm/memblock: add memblock_alloc_or_panic interface

2025-01-25 20:22:38 -08:00

setup_64.c

powerpc/64: Drop unnecessary 'rc' variable

2025-08-20 13:54:05 +05:30

setup-common.c

powerpc: Print MMU_FTRS_POSSIBLE & MMU_FTRS_ALWAYS at startup

2026-03-17 13:56:37 +05:30

setup.h

powerpc/4xx: Remove CONFIG_BOOKE_OR_40x

2024-06-28 22:28:48 +10:00

signal_32.c

powerpc/signal32: Force inlining of __unsafe_save_user_regs() and save_tm_user_regs_unsafe()

2023-06-09 23:29:51 +10:00

signal_64.c

powerpc/signal: Update comment for clarity

2022-07-28 16:22:14 +10:00

signal.c

powerpc: Replace GPL 2.0+ README.legal boilerplate with SPDX

2023-09-19 20:05:58 +10:00

signal.h

powerpc: Replace GPL 2.0+ README.legal boilerplate with SPDX

2023-09-19 20:05:58 +10:00

smp-tbsync.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

smp.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

stacktrace.c

powerpc: Replace kretprobe code with rethook on powerpc

2024-09-05 22:25:36 +10:00

static_call.c

powerpc/static_call: Implement inline static calls

2025-02-26 21:09:43 +05:30

suspend.c

PM: hibernate: powerpc: Expose pfn_is_nosave() prototype

2019-06-14 10:48:56 +02:00

switch.S

powerpc: Fix 'intra_function_call not a direct call' warning

2025-03-10 10:00:17 +05:30

swsusp_32.S

powerpc/32: Fix objtool unannotated intra-function call warnings

2022-11-18 19:00:06 +11:00

swsusp_64.c

powerpc/suspend: Add prototype for do_after_copyback()

2023-11-30 13:15:49 +11:00

swsusp_85xx.S

powerpc: Remove CONFIG_FSL_BOOKE

2022-09-26 22:47:37 +10:00

swsusp_asm64.S

powerpc/64: asm use consistent global variable declaration and access

2022-09-28 19:22:12 +10:00

swsusp.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30 11:26:32 -07:00

sys_ppc32.c

fs: fix archiecture-specific compat_ftruncate64

2026-03-23 12:41:57 +01:00

syscall.c

powerpc: rename arch_irq_disabled_regs

2026-05-20 06:57:13 +05:30

syscalls.c

powerpc: Adopt SYSCALL_DEFINE for arch-specific syscall handlers

2022-09-28 19:22:08 +10:00

sysfs.c

powerpc/machdep: Drop include of dma-mapping.h

2024-10-29 23:01:05 +11:00

systbl.c

powerpc: Don't add __powerpc_ prefix to syscall entry points

2022-10-07 00:59:54 +11:00

tau_6xx.c

powerpc, workqueue: Use alloc_ordered_workqueue() to create ordered workqueues

2023-05-08 13:52:27 -10:00

time.c

powerpc/time: Remove redundant preempt_disable|enable() calls from arch_irq_work_raise()

2026-05-14 11:15:26 +05:30

tm.S

powerpc: replace #include <asm/export.h> with #include <linux/export.h>

2023-08-16 23:54:48 +10:00

traps.c

powerpc: rename arch_irq_disabled_regs

2026-05-20 06:57:13 +05:30

ucall.S

powerpc: replace #include <asm/export.h> with #include <linux/export.h>

2023-08-16 23:54:48 +10:00

udbg_16550.c

powerpc/64: Remove maple platform

2024-10-29 23:01:52 +11:00

udbg.c

powerpc: Remove UDBG_RTAS_CONSOLE

2025-02-26 21:15:09 +05:30

uprobes.c

powerpc: Reject probes on instructions that can't be single stepped

2022-05-06 00:00:20 +10:00

vdso32_wrapper.S

powerpc/vdso: Mark the vDSO code read-only after init

2024-12-18 13:46:38 +05:30

vdso64_wrapper.S

powerpc/vdso: Mark the vDSO code read-only after init

2024-12-18 13:46:38 +05:30

vdso.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

vecemu.c

powerpc/inst: Define ppc_inst_t

2021-12-09 22:41:21 +11:00

vector.S

powerpc: Don't clobber f0/vs0 during fp|altivec register save

2023-11-28 23:04:43 +11:00

vmlinux.lds.S

kbuild: Split .modinfo out from ELF_DETAILS

2026-02-26 11:50:19 -07:00

watchdog.c

powerpc: rename arch_irq_disabled_regs

2026-05-20 06:57:13 +05:30