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Christophe Leroy db87a71992 powerpc/bug: Remove specific powerpc BUG_ON() and WARN_ON() on PPC32 
powerpc BUG_ON() and WARN_ON() are based on using twnei instruction.

For catching simple conditions like a variable having value 0, this
is efficient because it does the test and the trap at the same time.
But most conditions used with BUG_ON or WARN_ON are more complex and
forces GCC to format the condition into a 0 or 1 value in a register.
This will usually require 2 to 3 instructions.

The most efficient solution would be to use __builtin_trap() because
GCC is able to optimise the use of the different trap instructions
based on the requested condition, but this is complex if not
impossible for the following reasons:
- __builtin_trap() is a non-recoverable instruction, so it can't be
used for WARN_ON
- Knowing which line of code generated the trap would require the
analysis of DWARF information. This is not a feature we have today.

As mentioned in commit 8d4fbcfbe0 ("Fix WARN_ON() on bitfield ops")
the way WARN_ON() is implemented is suboptimal. That commit also
mentions an issue with 'long long' condition. It fixed it for
WARN_ON() but the same problem still exists today with BUG_ON() on
PPC32. It will be fixed by using the generic implementation.

By using the generic implementation, gcc will naturally generate a
branch to the unconditional trap generated by BUG().

As modern powerpc implement zero-cycle branch,
that's even more efficient.

And for the functions using WARN_ON() and its return, the test
on return from WARN_ON() is now also used for the WARN_ON() itself.

On PPC64 we don't want it because we want to be able to use CFAR
register to track how we entered the code that trapped. The CFAR
register would be clobbered by the branch.

A simple test function:

	unsigned long test9w(unsigned long a, unsigned long b)
	{
		if (WARN_ON(!b))
			return 0;
		return a / b;
	}

Before the patch:

	0000046c <test9w>:
	 46c:	7c 89 00 34 	cntlzw  r9,r4
	 470:	55 29 d9 7e 	rlwinm  r9,r9,27,5,31
	 474:	0f 09 00 00 	twnei   r9,0
	 478:	2c 04 00 00 	cmpwi   r4,0
	 47c:	41 82 00 0c 	beq     488 <test9w+0x1c>
	 480:	7c 63 23 96 	divwu   r3,r3,r4
	 484:	4e 80 00 20 	blr

	 488:	38 60 00 00 	li      r3,0
	 48c:	4e 80 00 20 	blr

After the patch:

	00000468 <test9w>:
	 468:	2c 04 00 00 	cmpwi   r4,0
	 46c:	41 82 00 0c 	beq     478 <test9w+0x10>
	 470:	7c 63 23 96 	divwu   r3,r3,r4
	 474:	4e 80 00 20 	blr

	 478:	0f e0 00 00 	twui    r0,0
	 47c:	38 60 00 00 	li      r3,0
	 480:	4e 80 00 20 	blr

So we see before the patch we need 3 instructions on the likely path
to handle the WARN_ON(). With the patch the trap goes on the unlikely
path.

See below the difference at the entry of system_call_exception where
we have several BUG_ON(), allthough less impressing.

With the patch:

	00000000 <system_call_exception>:
	   0:	81 6a 00 84 	lwz     r11,132(r10)
	   4:	90 6a 00 88 	stw     r3,136(r10)
	   8:	71 60 00 02 	andi.   r0,r11,2
	   c:	41 82 00 70 	beq     7c <system_call_exception+0x7c>
	  10:	71 60 40 00 	andi.   r0,r11,16384
	  14:	41 82 00 6c 	beq     80 <system_call_exception+0x80>
	  18:	71 6b 80 00 	andi.   r11,r11,32768
	  1c:	41 82 00 68 	beq     84 <system_call_exception+0x84>
	  20:	94 21 ff e0 	stwu    r1,-32(r1)
	  24:	93 e1 00 1c 	stw     r31,28(r1)
	  28:	7d 8c 42 e6 	mftb    r12
	...
	  7c:	0f e0 00 00 	twui    r0,0
	  80:	0f e0 00 00 	twui    r0,0
	  84:	0f e0 00 00 	twui    r0,0

Without the patch:

	00000000 <system_call_exception>:
	   0:	94 21 ff e0 	stwu    r1,-32(r1)
	   4:	93 e1 00 1c 	stw     r31,28(r1)
	   8:	90 6a 00 88 	stw     r3,136(r10)
	   c:	81 6a 00 84 	lwz     r11,132(r10)
	  10:	69 60 00 02 	xori    r0,r11,2
	  14:	54 00 ff fe 	rlwinm  r0,r0,31,31,31
	  18:	0f 00 00 00 	twnei   r0,0
	  1c:	69 60 40 00 	xori    r0,r11,16384
	  20:	54 00 97 fe 	rlwinm  r0,r0,18,31,31
	  24:	0f 00 00 00 	twnei   r0,0
	  28:	69 6b 80 00 	xori    r11,r11,32768
	  2c:	55 6b 8f fe 	rlwinm  r11,r11,17,31,31
	  30:	0f 0b 00 00 	twnei   r11,0
	  34:	7d 8c 42 e6 	mftb    r12

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/b286e07fb771a664b631cd07a40b09c06f26e64b.1618331881.git.christophe.leroy@csgroup.eu
2021-08-14 22:00:01 +10:00
..
book3s powerpc/book3s64/mm: update flush_tlb_range to flush page walk cache 2021-07-08 11:48:23 -07:00
nohash mm: rename p4d_page_vaddr to p4d_pgtable and make it return pud_t * 2021-07-08 11:48:22 -07:00
vdso powerpc/vdso: Add support for time namespaces 2021-04-14 23:04:44 +10:00
8xx_immap.h
accounting.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
agp.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
archrandom.h powerpc: Mark archrandom.h functions __must_check 2020-01-25 12:18:51 -05:00
asm-compat.h powerpc: move ASM_CONST and stringify_in_c() into asm-const.h 2018-07-30 22:48:16 +10:00
asm-const.h powerpc/uaccess: Don't use "m<>" constraint with GCC 4.9 2020-10-22 14:26:09 +11:00
asm-offsets.h
asm-prototypes.h powerpc/64: use interrupt restart table to speed up return from interrupt 2021-06-25 00:06:56 +10:00
async_tx.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 33 2019-05-24 17:27:11 +02:00
atomic.h locking/atomic: powerpc: move to ARCH_ATOMIC 2021-05-26 13:20:52 +02:00
backlight.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
barrier.h powerpc/barrier: Avoid collision with clang's __lwsync macro 2021-06-10 21:44:57 +10:00
bitops.h powerpc/bitops: Fix possible undefined behaviour with fls() and fls64() 2020-11-19 14:50:13 +11:00
bootx.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
btext.h powerpc/32s: fix booting with CONFIG_PPC_EARLY_DEBUG_BOOTX 2019-06-07 19:00:14 +10:00
bug.h powerpc/bug: Remove specific powerpc BUG_ON() and WARN_ON() on PPC32 2021-08-14 22:00:01 +10:00
bugs.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
cache.h treewide: Convert macro and uses of __section(foo) to __section("foo") 2020-10-25 14:51:49 -07:00
cacheflush.h powerpc/mem: Inline flush_dcache_page() 2021-04-14 23:04:19 +10:00
cell-pmu.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 153 2019-05-30 11:26:32 -07:00
cell-regs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
checksum.h powerpc: Force inlining of csum_add() 2021-06-16 00:16:47 +10:00
clocksource.h powerpc/vdso: Prepare for switching VDSO to generic C implementation. 2020-12-04 01:01:10 +11:00
cmpxchg.h locking/atomic: powerpc: move to ARCH_ATOMIC 2021-05-26 13:20:52 +02:00
code-patching-asm.h powerpc/asm: Add a patch_site macro & helpers for patching instructions 2018-08-08 00:32:25 +10:00
code-patching.h powerpc: Don't use 'struct ppc_inst' to reference instruction location 2021-06-17 00:09:00 +10:00
compat.h compat: lift compat_s64 and compat_u64 to <asm-generic/compat.h> 2020-09-17 13:00:46 -04:00
context_tracking.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
copro.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
cpm.h soc: fsl: move cpm.h from powerpc/include/asm to include/soc/fsl 2019-12-09 13:54:34 -06:00
cpm1.h powerpc/8xx: Fix early debug when SMC1 is relocated 2020-12-09 17:00:54 +11:00
cpm2.h powerpc: Spelling/typo fixes 2021-04-08 21:17:42 +10:00
cpu_has_feature.h powerpc: Force inlining of cpu_has_feature() to avoid build failure 2021-03-14 20:32:24 +11:00
cpu_setup_power.h powerpc/64s: Convert some cpu_setup() and cpu_restore() functions to C 2020-11-19 14:49:56 +11:00
cpufeature.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
cpuidle.h powerpc/64s: Reimplement book3s idle code in C 2019-04-30 22:37:48 +10:00
cputable.h arch: powerpc: Stop building and using oprofile 2021-01-29 10:05:51 +05:30
cputhreads.h KVM: PPC: Book3S HV: Fix TLB management on SMT8 POWER9 and POWER10 processors 2021-06-21 09:22:34 +10:00
cputime.h powerpc/64: move account_stolen_time into its own function 2021-02-09 00:10:49 +11:00
crashdump-ppc64.h powerpc/kexec_file: Setup backup region for kdump kernel 2020-07-29 23:47:54 +10:00
current.h powerpc/64: allow compiler to cache 'current' 2019-08-20 21:22:15 +10:00
dbdma.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dbell.h powerpc: Inline doorbell sending functions 2020-07-29 21:02:09 +10:00
dcr-generic.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
dcr-mmio.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
dcr-native.h powerpc/4xx: Fix build errors from mfdcr() 2021-03-01 12:33:31 +11:00
dcr-regs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dcr.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
debug.h powerpc: convert interrupt handlers to use wrappers 2021-02-09 00:02:12 +11:00
delay.h powerpc/time: Avoid using get_tbl() and get_tbu() internally 2020-10-08 21:17:15 +11:00
device.h IOMMU Updates for Linux v5.9 2020-08-11 14:13:24 -07:00
disassemble.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 266 2019-06-05 17:30:28 +02:00
dma-direct.h dma-direct: rename and cleanup __phys_to_dma 2020-09-11 09:14:43 +02:00
dma.h powerpc/32: drop unused ISA_DMA_THRESHOLD 2020-04-01 14:30:50 +11:00
drmem.h pseries/drmem: update LMBs after LPM 2021-08-10 23:14:55 +10:00
dt_cpu_ftrs.h powerpc: clean inclusions of asm/feature-fixups.h 2018-07-30 22:48:17 +10:00
dtl.h powerpc64: Break asm/percpu.h vs spinlock_types.h dependency 2020-07-10 12:00:01 +02:00
edac.h EDAC: Cleanup atomic_scrub mess 2015-05-28 15:31:53 +02:00
eeh.h powerpc/eeh: Delete eeh_pe->config_addr 2020-10-07 22:34:47 +11:00
eeh_event.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
ehv_pic.h
elf.h powerpc: Remove ucache_bsize 2020-12-05 21:49:52 +11:00
elfnote.h powerpc: Add PowerPC Capabilities ELF note 2019-08-30 09:40:15 +10:00
emergency-restart.h
emulated_ops.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 340 2019-06-05 17:37:07 +02:00
epapr_hcalls.h powerpc/epapr_hcalls.h: delete duplicated words 2020-07-27 00:01:31 +10:00
exception-64e.h powerpc/64e: Drop dead BOOK3E_MMU_TLB_STATS code 2020-07-29 21:08:12 +10:00
exception-64s.h KVM: PPC: Book3S 64: Move hcall early register setup to KVM 2021-06-10 22:12:12 +10:00
exec.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
extable.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fadump-internal.h powerpc/fadump: use static allocation for reserved memory ranges 2020-05-04 22:29:58 +10:00
fadump.h powerpc/fadump: add support to preserve crash data on FADUMP disabled kernel 2019-09-14 00:04:45 +10:00
fb.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
feature-fixups.h powerpc/64s: fix scv entry fallback flush vs interrupt 2021-01-20 15:58:19 +11:00
firmware.h powerpc/pseries: Add support for FORM2 associativity 2021-08-13 22:04:27 +10:00
fixmap.h powerpc/64: Fix the definition of the fixmap area 2021-04-22 20:59:15 +10:00
floppy.h floppy: use symbolic register names in the powerpc port 2020-05-12 19:34:53 +03:00
fs_pd.h powerpc/8xx: Getting rid of remaining use of CONFIG_8xx 2017-08-10 23:32:12 +10:00
fsl_85xx_cache_sram.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
fsl_gtm.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
fsl_hcalls.h scripts/spelling.txt: add "partiton" pattern and fix typo instances 2017-02-27 18:43:46 -08:00
fsl_lbc.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
fsl_pamu_stash.h iommu/fsl_pamu: replace DOMAIN_ATTR_FSL_PAMU_STASH with a direct call 2021-04-07 10:56:52 +02:00
fsl_pm.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ftrace.h tracing: Fix various typos in comments 2021-03-23 14:08:18 -04:00
futex.h powerpc/futex: Switch to user_access block 2021-03-26 23:19:43 +11:00
grackle.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hardirq.h powerpc/64s: Move HMI IRQ stat from percpu variable to paca. 2020-07-29 23:47:53 +10:00
head-64.h powerpc/64: move interrupt return asm to interrupt_64.S 2021-06-25 00:06:55 +10:00
heathrow.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
highmem.h powerpc/mm/highmem: use __set_pte_at() for kmap_local() 2021-01-24 10:34:53 -08:00
hmi.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 114 2019-05-24 17:39:01 +02:00
hugetlb.h powerpc/mm: Enable compound page check for both THP and HugeTLB 2021-02-11 23:35:06 +11:00
hvcall.h Merge branch 'topic/ppc-kvm' into next 2021-06-23 00:19:08 +10:00
hvconsole.h powerpc/pseries: Move hvc_vio_init_early() prototype to shared location 2021-03-24 14:09:30 +11:00
hvcserver.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
hvsi.h powerpc/hvsi: Fix spelling mistake: "lenght" should be "length" 2019-01-14 20:39:27 +11:00
hw_breakpoint.h powerpc/watchpoint: Fix exception handling for CONFIG_HAVE_HW_BREAKPOINT=N 2020-09-15 22:13:20 +10:00
hw_irq.h powerpc/64: use interrupt restart table to speed up return from interrupt 2021-06-25 00:06:56 +10:00
hydra.h powerpc/chrp: Make hydra_init() static 2021-03-24 14:09:29 +11:00
i8259.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ibmebus.h ibmebus: convert of_platform_driver to platform_driver 2013-06-12 12:37:26 +01:00
icswx.h powerpc/nx: Don't pack struct coprocessor_request_block 2020-08-25 01:31:33 +10:00
ide.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
idle.h powerpc/sysfs: Show idle_purr and idle_spurr for every CPU 2020-04-30 12:35:26 +10:00
imc-pmu.h powerpc/perf: Add kernel support for new MSR[HV PR] bits in trace-imc 2020-07-16 13:12:46 +10:00
immap_cpm2.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
inst.h powerpc/inst: Refactor PPC32 and PPC64 versions 2021-06-17 00:09:06 +10:00
interrupt.h powerpc/64: enable MSR[EE] in irq replay pt_regs 2021-06-30 22:21:20 +10:00
io-defs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
io-workarounds.h powerpc/mm: rework io-workaround invocation. 2019-08-27 13:03:34 +10:00
io.h mm: remove xlate_dev_kmem_ptr() 2021-05-07 00:26:34 -07:00
io_event_irq.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
iommu.h dma-mapping: split <linux/dma-mapping.h> 2020-10-06 07:07:03 +02:00
ipic.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
irq.h powerpc: Drop dependency between asm/irq.h and linux/irqdomain.h 2021-06-10 13:09:17 +01:00
irq_work.h powerpc: Add missing prototype for arch_irq_work_raise() 2018-03-13 15:50:37 +11:00
irqflags.h powerpc/64: Rename soft_enabled to irq_soft_mask 2018-01-19 22:37:01 +11:00
isa-bridge.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 powerpc: Fix initrd corruption with relative jump labels 2021-06-15 23:35:57 +10:00
kasan.h powerpc/kasan: Fix shadow start address with modules 2021-04-25 21:29:04 +10:00
Kbuild powerpc/syscalls: switch to generic syscalltbl.sh 2021-04-14 23:04:16 +10:00
kdebug.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
kdump.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
kexec.h powerpc/kexec_file: Restore FDT size estimation for kdump kernel 2021-03-11 09:53:38 -07:00
kexec_ranges.h powerpc/kexec_file: Avoid stomping memory used by special regions 2020-07-29 23:47:53 +10:00
keylargo.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
kfence.h powerpc: Enable KFENCE for PPC32 2021-03-24 14:09:30 +11:00
kgdb.h powerpc/kgdb: add kgdb_arch_set/remove_breakpoint() 2018-10-20 13:26:47 +11:00
kprobes.h powerpc: Add prefixed instructions to instruction data type 2020-05-19 00:10:39 +10:00
kup.h powerpc/kuap: Force inlining of all first level KUAP helpers. 2021-06-17 00:09:09 +10:00
kvm_asm.h KVM: PPC: Book3S HV P9: implement hash host / hash guest support 2021-06-10 22:12:15 +10:00
kvm_book3s.h KVM: PPC: Book3S HV: Nested support in H_RPT_INVALIDATE 2021-06-22 23:35:37 +10:00
kvm_book3s_32.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 266 2019-06-05 17:30:28 +02:00
kvm_book3s_64.h KVM: PPC: Book3S HV P9: inline kvmhv_load_hv_regs_and_go into __kvmhv_vcpu_entry_p9 2021-06-10 22:12:13 +10:00
kvm_book3s_asm.h KVM: PPC: Book3S HV: Remove support for running HPT guest on RPT host without mixed mode support 2021-02-10 14:31:08 +11:00
kvm_book3s_uvmem.h KVM: PPC: Book3S HV: Migrate hot plugged memory 2020-07-28 12:34:52 +10:00
kvm_booke.h powerpc: Inline doorbell sending functions 2020-07-29 21:02:09 +10:00
kvm_booke_hv_asm.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
kvm_fpu.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 266 2019-06-05 17:30:28 +02:00
kvm_guest.h powerpc: Fix is_kvm_guest() / kvm_para_available() 2021-06-25 14:47:19 +10:00
kvm_host.h KVM: stats: Separate generic stats from architecture specific ones 2021-06-24 11:47:56 -04:00
kvm_para.h powerpc: Reintroduce is_kvm_guest() as a fast-path check 2020-12-04 01:01:22 +11:00
kvm_ppc.h KVM: PPC: Book3S HV: XIVE: Change interface of passthrough interrupt routines 2021-08-10 23:14:59 +10:00
libata-portmap.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 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
livepatch.h powerpc/64s: avoid reloading (H)SRR registers if they are still valid 2021-06-25 00:06:55 +10:00
local.h powerpc: Add const qual to local_read() parameter 2019-11-24 15:06:33 -08:00
lppaca.h powerpc64: Break asm/percpu.h vs spinlock_types.h dependency 2020-07-10 12:00:01 +02:00
lv1call.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 167 2019-05-30 11:26:39 -07:00
machdep.h powerpc/pci: Add ppc_md.discover_phbs() 2021-02-03 09:46:36 +11:00
macio.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mc146818rtc.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
mce.h powerpc/mce: Remove per cpu variables from MCE handlers 2021-01-31 22:35:49 +11:00
mediabay.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mem_encrypt.h powerpc/pseries/svm: Force SWIOTLB for secure guests 2019-08-30 09:55:41 +10:00
membarrier.h powerpc/non-smp: Unconditionaly call smp_mb() on switch_mm 2021-08-10 23:14:55 +10:00
mman.h powerpc/64s: Disallow PROT_SAO in LPARs by default 2020-08-24 14:12:54 +10:00
mmiowb.h arch: Remove dummy mmiowb() definitions from arch code 2019-04-08 12:09:27 +01:00
mmu.h powerpc: Always inline radix_enabled() to fix build failure 2021-08-10 23:14:56 +10:00
mmu_context.h Merge branch 'topic/ppc-kvm' into next 2021-06-23 00:19:08 +10:00
mmzone.h mm: replace CONFIG_NEED_MULTIPLE_NODES with CONFIG_NUMA 2021-06-29 10:53:55 -07:00
module.h powerpc updates for 5.8 2020-06-05 12:39:30 -07:00
module.lds.h kbuild: preprocess module linker script 2020-09-25 00:36:41 +09:00
mpc5xxx.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 40 2019-05-24 17:27:12 +02:00
mpc6xx.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mpc52xx.h powerpc/52xx: Add missing functions prototypes 2018-05-25 12:04:42 +10:00
mpc52xx_psc.h powerpc: mpc512x: drop bogus and unused psc register bit definitions 2015-10-22 16:06:08 +02:00
mpc85xx.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 40 2019-05-24 17:27:12 +02:00
mpc5121.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 449 2019-06-05 17:37:18 +02:00
mpc8260.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mpic.h powerpc/msi: Fix compile error on mpc83xx 2018-10-21 19:32:07 +11:00
mpic_msgr.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441 2019-06-05 17:37:17 +02:00
mpic_timer.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
msi_bitmap.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441 2019-06-05 17:37:17 +02:00
nmi.h powerpc: convert interrupt handlers to use wrappers 2021-02-09 00:02:12 +11:00
nvram.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ohare.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
opal-api.h powerpc/xive: Remove P9 DD1 flag XIVE_IRQ_FLAG_EOI_FW 2020-12-11 09:53:10 +11:00
opal.h powerpc/powernv: remove the nvlink support 2021-05-02 23:35:32 +10:00
paca.h powerpc/64: use interrupt restart table to speed up return from interrupt 2021-06-25 00:06:56 +10:00
page.h powerpc/32: Set user/kernel boundary at TASK_SIZE instead of PAGE_OFFSET 2020-07-27 00:01:30 +10:00
page_32.h powerpc/32s: Cleanup around PTE_FLAGS_OFFSET in hash_low.S 2020-12-09 23:48:14 +11:00
page_64.h mm/vma: define a default value for VM_DATA_DEFAULT_FLAGS 2020-04-10 15:36:21 -07:00
paravirt.h powerpc/pseries: Fix hcall tracing recursion in pv queued spinlocks 2021-05-12 11:07:38 +10:00
parport.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pasemi_dma.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333 2019-06-05 17:37:06 +02:00
pci-bridge.h powerpc/pseries/pci: Add MSI domains 2021-08-10 23:14:57 +10:00
pci.h powerpc/powernv: remove the nvlink support 2021-05-02 23:35:32 +10:00
percpu.h powerpc: Fix circular dependency between percpu.h and mmu.h 2020-08-04 23:15:59 +10:00
perf_event.h powerpc/perf: Expose Performance Monitor Counter SPR's as part of extended regs 2021-02-09 01:09:44 +11:00
perf_event_fsl_emb.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
perf_event_server.h powerpc/perf: Expose processor pipeline stage cycles using PERF_SAMPLE_WEIGHT_STRUCT 2021-04-20 14:22:23 +10:00
pgalloc.h mm/thp: define default pmd_pgtable() 2021-07-01 11:06:03 -07:00
pgtable-be-types.h powerpc/64: only book3s/64 supports CONFIG_PPC_64K_PAGES 2019-05-03 01:20:23 +10:00
pgtable-types.h powerpc/64: only book3s/64 supports CONFIG_PPC_64K_PAGES 2019-05-03 01:20:23 +10:00
pgtable.h powerpc updates for 5.14 2021-07-02 12:54:34 -07:00
pkeys.h powerpc/pkeys: Remove unused code 2021-02-09 01:09:44 +11:00
plpar_wrappers.h powerpc/pseries: use notrace hcall variant for H_CEDE idle 2021-05-12 11:07:38 +10:00
pmac_feature.h powerpc: Various typo fixes 2016-06-14 13:58:26 +10:00
pmac_low_i2c.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
pmac_pfunc.h powerpc/powermac: Move pmac_pfunc_base_install prototype to header file 2018-05-25 12:04:41 +10:00
pmc.h powerpc/pmu: Set pmcregs_in_use in paca when running as LPAR 2019-07-15 12:41:26 +10:00
pmi.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 153 2019-05-30 11:26:32 -07:00
pnv-ocxl.h ocxl: Initiate a TLB invalidate command 2020-12-04 01:01:30 +11:00
pnv-pci.h powerpc/powernv/pci: Rework pnv_opal_pci_msi_eoi() 2021-08-10 23:15:01 +10:00
powernv.h powerpc updates for 5.3 2019-07-13 16:08:36 -07:00
ppc-opcode.h powerpc/optprobes: use PPC_RAW_ macros 2021-06-17 00:09:07 +10:00
ppc-pci.h powerpc/pci: Remove unimplemented prototypes 2021-02-11 23:35:36 +11:00
ppc4xx.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 40 2019-05-24 17:27:12 +02:00
ppc_asm.h powerpc/64s: add a table of implicit soft-masked addresses 2021-06-30 22:21:20 +10:00
probes.h powerpc/64s: avoid reloading (H)SRR registers if they are still valid 2021-06-25 00:06:55 +10:00
processor.h powerpc/64: drop redundant defination of spin_until_cond 2021-06-17 00:09:11 +10:00
prom.h powerpc/pseries: Add support for FORM2 associativity 2021-08-13 22:04:27 +10:00
ps3.h powerpc/ps3: Add dma_mask to ps3_dma_region 2021-06-10 21:44:58 +10:00
ps3av.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 167 2019-05-30 11:26:39 -07:00
ps3gpu.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 340 2019-06-05 17:37:07 +02:00
ps3stor.h powerpc updates for 5.3 2019-07-13 16:08:36 -07:00
pte-walk.h powerpc: Fix reverse map real-mode address lookup with huge vmalloc 2021-05-28 22:54:27 +10:00
ptrace.h powerpc/ptrace: Refactor regs_set_return_{msr/ip} 2021-06-26 00:12:39 +10:00
qspinlock.h locking/atomic: powerpc: move to ARCH_ATOMIC 2021-05-26 13:20:52 +02:00
qspinlock_paravirt.h powerpc/pseries: Implement paravirt qspinlocks for SPLPAR 2020-07-27 00:01:29 +10:00
reg.h powerpc: Move update_power8_hid0() into its only user 2021-06-17 00:09:11 +10:00
reg_8xx.h powerpc/hw_breakpoints: Rewrite 8xx breakpoints to allow any address range size. 2020-01-23 21:31:14 +11:00
reg_a2.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
reg_booke.h powerpc/32: Handle bookE debugging in C in syscall entry/exit 2021-02-11 23:35:12 +11:00
reg_fsl_emb.h powerpc: clean the inclusion of stringify.h 2018-07-30 22:48:17 +10:00
rheap.h powerpc: Add missing prototype 2018-05-25 12:04:43 +10:00
rio.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rtas-types.h powerpc/rtas: remove unused rtas_suspend_me_data 2020-12-08 21:41:02 +11:00
rtas.h powerpc/rtas: rename RTAS_RMOBUF_MAX to RTAS_USER_REGION_SIZE 2021-04-14 23:04:16 +10:00
runlatch.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
seccomp.h powerpc: Enable seccomp architecture tracking 2020-11-20 11:16:35 -08:00
sections.h powerpc: Remove in_kernel_text() 2021-08-10 23:14:55 +10:00
secure_boot.h powerpc: Detect the trusted boot state of the system 2019-11-12 12:25:49 +11:00
security_features.h powerpc/security: Add a security feature for STF barrier 2021-06-21 21:13:19 +10:00
secvar.h powerpc/powernv: Add OPAL API interface to access secure variable 2019-11-13 00:33:22 +11:00
serial.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
set_memory.h powerpc/mm: implement set_memory_attr() 2021-06-21 21:13:21 +10:00
setjmp.h powerpc: Make setjmp/longjmp signature standard 2020-04-01 14:30:51 +11:00
setup.h powerpc: Remove klimit 2021-06-25 00:07:10 +10:00
sfp-machine.h powerpc/math-emu: Update macros from GCC 2018-12-04 19:45:01 +11:00
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 powerpc/64/sycall: Implement syscall entry/exit logic in C 2020-04-01 13:42:13 +11:00
simple_spinlock.h powerpc/spinlock: Unserialize spin_is_locked 2021-03-26 23:19:43 +11:00
simple_spinlock_types.h powerpc: Move spinlock implementation to simple_spinlock 2020-07-26 23:34:26 +10:00
slice.h powerpc/8xx: MM_SLICE is not needed anymore 2020-05-26 22:22:21 +10:00
smp.h powerpc/smp: Use existing L2 cache_map cpumask to find L3 cache siblings 2021-08-04 10:53:39 +10:00
smu.h powerpc/smu.h: delete duplicated word 2020-07-27 00:01:32 +10:00
sparsemem.h mm: fix phys_to_target_node() and memory_add_physaddr_to_nid() exports 2020-11-22 10:48:22 -08:00
spinlock.h powerpc/spinlock: Define smp_mb__after_spinlock only once 2021-03-26 23:19:43 +11:00
spinlock_types.h powerpc/64s: Implement queued spinlocks and rwlocks 2020-07-27 00:01:23 +10:00
spu.h arch: powerpc: Stop building and using oprofile 2021-01-29 10:05:51 +05:30
spu_csa.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 153 2019-05-30 11:26:32 -07:00
spu_info.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 153 2019-05-30 11:26:32 -07:00
spu_priv1.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 167 2019-05-30 11:26:39 -07:00
sstep.h powerpc/kprobes: Roll IS_RFI() macro into IS_RFID() 2021-06-25 14:47:18 +10:00
stackprotector.h powerpc/64: add stack protector support 2018-10-03 15:40:03 +10:00
stacktrace.h powerpc: Add show_user_instructions() 2018-08-08 00:32:30 +10:00
string.h x86, powerpc: Rename memcpy_mcsafe() to copy_mc_to_{user, kernel}() 2020-10-06 11:18:04 +02:00
svm.h powerpc/pseries/svm: Allocate SWIOTLB buffer anywhere in memory 2020-09-14 23:07:14 +10:00
swab.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
swiotlb.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
switch_to.h powerpc: Fix missing declaration of [en/dis]able_kernel_vsx() 2021-03-10 11:15:00 +11:00
synch.h powerpc/64s: Add cp_abort after tlbiel to invalidate copy-buffer address 2020-10-06 23:22:23 +11:00
syscall.h powerpc/64s/syscall: Fix ptrace syscall info with scv syscalls 2021-05-21 00:58:56 +10:00
syscalls.h powerpc/syscalls: switch rtas(2) to SYSCALL_DEFINE 2018-05-10 23:25:14 +10:00
task_size_32.h powerpc: Avoid circular header inclusion in mmu-hash.h 2019-02-23 22:31:39 +11:00
task_size_64.h powerpc/64: only book3s/64 supports CONFIG_PPC_64K_PAGES 2019-05-03 01:20:23 +10:00
tce.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
termios.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
thread_info.h powerpc/64s: power4 nap fixup in C 2021-04-08 21:17:45 +10:00
time.h KVM: PPC: Book3S HV P9: Reduce irq_work vs guest decrementer races 2021-06-10 22:12:13 +10:00
timex.h powerpc/time: Move timebase functions into new asm/vdso/timebase.h 2020-12-04 01:01:10 +11:00
tlb.h mm/mremap: allow arch runtime override 2021-07-08 11:48:23 -07:00
tlbflush.h powerpc: split asm/tlbflush.h 2018-07-30 22:48:21 +10:00
tm.h powerpc: Export tm_enable()/tm_disable/tm_abort() APIs 2018-05-24 16:04:02 +10:00
topology.h powerpc/pseries: Add a helper for form1 cpu distance 2021-08-13 22:04:27 +10:00
trace.h powerpc: Add doorbell tracepoints 2019-05-01 16:45:05 +10:00
trace_clock.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
tsi108.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
tsi108_irq.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
tsi108_pci.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
types.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
uaccess.h powerpc/uaccess: Fix __get_user() with CONFIG_CC_HAS_ASM_GOTO_OUTPUT 2021-05-12 11:07:39 +10:00
udbg.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
uic.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ultravisor-api.h KVM: PPC: Book3S HV: Support reset of secure guest 2019-11-28 17:02:31 +11:00
ultravisor.h KVM: PPC: Book3S HV: Support reset of secure guest 2019-11-28 17:02:31 +11:00
uninorth.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
unistd.h powerpc/syscalls: Use sys_old_select() in ppc_select() 2021-03-26 23:19:42 +11:00
uprobes.h powerpc: Don't use 'struct ppc_inst' to reference instruction location 2021-06-17 00:09:00 +10:00
user.h powerpc/aout: Fix struct user definition to use user_pt_regs 2018-10-19 15:09:04 +11:00
vas.h powerpc/pseries/vas: Integrate API with open/close windows 2021-06-20 21:58:57 +10:00
vdso.h powerpc/vdso: Cleanup vdso.h 2020-12-04 01:01:19 +11:00
vdso_datapage.h powerpc/vdso: Add support for time namespaces 2021-04-14 23:04:44 +10:00
vermagic.h arch: split MODULE_ARCH_VERMAGIC definitions out to <asm/vermagic.h> 2020-04-23 10:50:26 +09:00
vga.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vio.h powerpc/pseries: Add shutdown() to vio_driver and vio_bus 2021-04-20 14:22:24 +10:00
vmalloc.h mm/vmalloc: provide fallback arch huge vmap support functions 2021-04-30 11:20:40 -07:00
word-at-a-time.h powerpc: EX_TABLE macro for exception tables 2016-11-14 11:11:51 +11:00
xics.h powerpc/xics: Rename the map handler in a check handler 2021-08-10 23:14:59 +10:00
xive-regs.h KVM: PPC: Book3S HV: XIVE: Add support for automatic save-restore 2021-08-10 23:15:02 +10:00
xive.h KVM: PPC: Book3S HV: XIVE: Add support for automatic save-restore 2021-08-10 23:15:02 +10:00
xmon.h powerpc: remove unneeded semicolons 2021-02-09 00:10:50 +11:00
xor.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
xor_altivec.h powerpc/altivec: Add missing prototypes for altivec 2018-05-25 12:04:38 +10:00