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linux/arch/parisc/include/asm
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Helge Deller 4b9d2a731c parisc: Switch user access functions to signal errors in r29 instead of r8 
Use register r29 instead of register r8 to signal faults when accessing
user memory. In case of faults, the fixup routine will store -EFAULT in
this register.

This change saves up to 752 bytes on a 32bit kernel, partly because the
compiler doesn't need to save and restore the old r8 value on the stack.

bloat-o-meter results for usage with r29 register:
add/remove: 0/0 grow/shrink: 23/86 up/down: 228/-980 (-752)

bloat-o-meter results for usage with r28 register:
add/remove: 0/0 grow/shrink: 28/83 up/down: 296/-956 (-660)

Signed-off-by: Helge Deller <deller@gmx.de>
2022-01-07 01:29:21 +01:00
..
agp.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
alternative.h
parisc: Add ALTERNATIVE_CODE() and ALT_COND_RUN_ON_QEMU
2019-08-12 19:17:39 +02:00
asm-offsets.h
…
asmregs.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 153
2019-05-30 11:26:32 -07:00
assembly.h
parisc: Define depi_safe macro
2022-01-07 01:29:20 +01:00
atomic.h
locking/atomic: parisc: move to ARCH_ATOMIC
2021-05-26 13:20:51 +02:00
barrier.h
parisc: Add alternative patching to synchronize_caches define
2020-10-15 08:10:38 +02:00
bitops.h
parisc: Drop ifdef __KERNEL__ from non-uapi kernel headers
2021-11-01 07:36:00 +01:00
bug.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
bugs.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
cache.h
treewide: Convert macro and uses of __section(foo) to __section("foo")
2020-10-25 14:51:49 -07:00
cacheflush.h
Add linux/cacheflush.h
2021-11-17 10:36:15 -05:00
checksum.h
saner calling conventions for csum_and_copy_..._user()
2020-08-20 15:45:15 -04:00
cmpxchg.h
locking/atomic: parisc: move to ARCH_ATOMIC
2021-05-26 13:20:51 +02:00
compat_ucontext.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
compat.h
arch: remove compat_alloc_user_space
2021-09-08 15:32:35 -07:00
current.h
parisc: Move thread_info into task struct
2021-11-01 07:35:59 +01:00
delay.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
dma-mapping.h
parisc: move internal implementation details out of <asm/dma-mapping.h>
2019-02-21 20:37:11 +01:00
dma.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
dwarf.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
eisa_bus.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
eisa_eeprom.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
elf.h
Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2020-08-09 13:33:54 -07:00
fb.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
fixmap.h
parisc: add kexec syscall support
2019-09-08 15:37:04 +02:00
floppy.h
floppy: use symbolic register names in the parisc port
2020-05-12 19:34:53 +03:00
ftrace.h
parisc/ftrace: Add ARCH_SUPPORTS_FTRACE_OPS support
2019-08-03 08:56:57 +02:00
futex.h
parisc: Fix mask used to select futex spinlock
2021-12-21 21:15:59 +01:00
grfioctl.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
hardirq.h
softirq: Move __ARCH_HAS_DO_SOFTIRQ to Kconfig
2021-02-10 23:34:16 +01:00
hardware.h
parisc: Use per-pagetable spinlock
2019-05-03 23:47:41 +02:00
hash.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
hugetlb.h
mm/hugetlb: define a generic fallback for arch_clear_hugepage_flags()
2020-06-03 20:09:46 -07:00
ide.h
parisc: Drop ifdef __KERNEL__ from non-uapi kernel headers
2021-11-01 07:36:00 +01:00
io.h
mm: remove xlate_dev_kmem_ptr()
2021-05-07 00:26:34 -07:00
irq.h
parisc: Remove leftover reference to the power_tasklet
2021-01-26 19:57:26 +01:00
irqflags.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
jump_label.h
parisc: Include stringify.h to avoid build error in crypto/api.c
2021-11-18 09:01:36 +01:00
kbdleds.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
Kbuild
parisc: syscalls: switch to generic syscalltbl.sh
2021-04-27 09:43:56 +02:00
kexec.h
parisc: fix compilation when KEXEC=n and KEXEC_FILE=y
2019-12-15 21:05:38 +01:00
kfence.h
parisc: Add KFENCE support
2021-10-30 23:11:00 +02:00
kgdb.h
parisc: add KGDB support
2019-05-03 23:47:38 +02:00
kprobes.h
parisc: add kprobe_fault_handler()
2019-07-21 11:01:55 +02:00
ldcw.h
treewide: Convert macro and uses of __section(foo) to __section("foo")
2020-10-25 14:51:49 -07:00
led.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
linkage.h
parisc: Fix boot failure of 64-bit kernel
2018-08-21 14:32:44 +02:00
machdep.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
mckinley.h
parisc: Drop ifdef __KERNEL__ from non-uapi kernel headers
2021-11-01 07:36:00 +01:00
mmu_context.h
parisc: Optimize per-pagetable spinlocks
2021-02-12 16:39:42 +01:00
mmu.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
mmzone.h
parisc: Switch from DISCONTIGMEM to SPARSEMEM
2019-05-03 23:47:40 +02:00
module.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
page.h
parisc: Use absolute_pointer() to define PAGE0
2021-09-16 08:35:42 +02:00
parisc-device.h
parisc: Make struct parisc_driver::remove() return void
2021-08-30 10:18:25 +02:00
parport.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
patch.h
parisc: add support for patching multiple words
2019-06-08 12:56:25 +02:00
pci.h
parisc: remove the HBA_DATA macro
2019-02-21 20:37:12 +01:00
pdc_chassis.h
treewide: remove editor modelines and cruft
2021-05-07 00:26:34 -07:00
pdc.h
parisc/firmware: add functions to retrieve TOC data
2021-11-01 07:35:59 +01:00
pdcpat.h
parisc: Add constant for PDC_PAT_COMPLEX firmware call
2019-02-21 20:37:13 +01:00
perf_event.h
…
perf.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
pgalloc.h
parisc: Rename PMD_ORDER to PMD_TABLE_ORDER
2021-08-30 10:18:25 +02:00
pgtable.h
parisc: Flush kernel data mapping in set_pte_at() when installing pte for user page
2021-11-13 22:10:56 +01:00
prefetch.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
processor.h
parisc architecture updates for kernel v5.16-rc1
2021-11-01 16:51:13 -07:00
psw.h
parisc: asm: psw.h: missing header guard
2019-06-25 14:52:26 +02:00
ptrace.h
parisc: Use PRIV_USER and PRIV_KERNEL in ptrace.h
2021-11-01 07:36:00 +01:00
ropes.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
rt_sigframe.h
Revert "parisc: Reduce sigreturn trampoline to 3 instructions"
2021-11-18 09:02:32 +01:00
runway.h
parisc: Drop ifdef __KERNEL__ from non-uapi kernel headers
2021-11-01 07:36:00 +01:00
seccomp.h
parisc: Enable seccomp architecture tracking
2020-11-20 11:16:34 -08:00
sections.h
parisc: Add alternative coding infrastructure
2018-10-17 17:22:26 +02:00
serial.h
…
shmparam.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
signal.h
signal/parisc: Remove parisc specific definition of __ARCH_UAPI_SA_FLAGS
2020-11-30 13:43:35 -06:00
smp.h
parisc: move CPU field back into thread_info
2021-11-04 11:21:47 +01:00
socket.h
parisc: Define O_NONBLOCK to become 000200000
2020-10-15 08:10:38 +02:00
sparsemem.h
parisc: Switch from DISCONTIGMEM to SPARSEMEM
2019-05-03 23:47:40 +02:00
special_insns.h
parisc: Fix lpa and lpa_user defines
2022-01-07 01:29:20 +01:00
spinlock_types.h
parisc: Rework arch_rw locking functions
2020-04-05 22:29:55 +02:00
spinlock.h
locking: Remove spin_lock_flags() etc
2021-10-30 16:37:28 +02:00
string.h
Revert "parisc: Add assembly implementations for memset, strlen, strcpy, strncpy and strcat"
2021-08-29 10:13:32 -07:00
superio.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
switch_to.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
syscall.h
parisc: define syscall_get_error()
2019-07-16 19:23:24 -07:00
termios.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
thread_info.h
parisc: move CPU field back into thread_info
2021-11-04 11:21:47 +01:00
timex.h
locking, arch/ia64: Reduce <asm/smp.h> header dependencies by moving XTP bits into the new <asm/xtp.h> header
2020-08-06 16:13:13 +02:00
tlb.h
parisc: use pgtable-nopXd instead of 4level-fixup
2019-12-04 19:44:15 -08:00
tlbflush.h
parisc: Use per-pagetable spinlock
2019-05-03 23:47:41 +02:00
topology.h
parisc: Add CPU topology support
2017-11-17 15:27:22 +01:00
traps.h
parisc: make parisc_acctyp() available outside of faults.c
2021-10-30 23:11:00 +02:00
uaccess.h
parisc: Switch user access functions to signal errors in r29 instead of r8
2022-01-07 01:29:21 +01:00
ucontext.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
unaligned.h
parisc: Drop ifdef __KERNEL__ from non-uapi kernel headers
2021-11-01 07:36:00 +01:00
unistd.h
parisc: Wire up clone3 syscall
2019-07-17 23:11:28 +02:00
unwind.h
parisc: Consolidate unwind initialization calls
2018-08-17 17:00:08 +02:00
vmalloc.h
mm/vmalloc: Add empty <asm/vmalloc.h> headers and use them from <linux/vmalloc.h>
2019-12-10 10:12:55 +01:00