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OpenCloudOS-Kernel/arch/parisc/kernel
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John David Anglin 798082be69 parisc: Fix patch code locking and flushing 
This change fixes the following:

1) The flags variable is not initialized. Always use raw_spin_lock_irqsave
and raw_spin_unlock_irqrestore to serialize patching.

2) flush_kernel_vmap_range is primarily intended for DMA flushes.
The whole cache flush in flush_kernel_vmap_range is only possible
when interrupts are enabled on SMP machines. Since __patch_text_multiple
calls flush_kernel_vmap_range with interrupts disabled, it is better
to directly call flush_kernel_dcache_range_asm and
flush_kernel_icache_range_asm.

3) The final call to flush_icache_range is unnecessary.

Tested with `[PATCH, V3] parisc: Rewrite cache flush code for
PA8800/PA8900' change on rp3440, c8000 and c3750 (32 and 64-bit).

Note by Helge:
This patch had been temporarily reverted shortly before v5.18-rc6 in order
to fix boot issues. Now it can be re-applied.

Signed-off-by: John David Anglin <dave.anglin@bell.net>
Signed-off-by: Helge Deller <deller@gmx.de>
 		2022-05-17 21:52:59 +02:00
..
syscalls arch: syscalls: simplify uapi/kapi directory creation 2022-03-31 12:03:46 +09:00
vdso32 parisc: Add vDSO support 2022-03-11 19:49:30 +01:00
vdso64 parisc: Add vDSO support 2022-03-11 19:49:30 +01:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
Makefile parisc: Switch from GENERIC_CPU_DEVICES to GENERIC_ARCH_TOPOLOGY 2022-03-29 21:37:12 +02:00
alternative.c parisc: Avoid calling SMP cache flush functions on cache-less machines 2022-03-16 22:52:12 +01:00
asm-offsets.c parisc: Add vDSO support 2022-03-11 19:49:30 +01:00
audit.c audit: add support for the openat2 syscall 2021-10-01 16:52:48 -04:00
cache.c parisc: Rewrite cache flush code for PA8800/PA8900 2022-05-17 21:52:47 +02:00
compat_audit.c audit: add support for the openat2 syscall 2021-10-01 16:52:48 -04:00
drivers.c bus: Make remove callback return void 2021-07-21 11:53:42 +02:00
entry.S parisc: Simplify fast path for non-access data TLB faults 2022-03-11 19:49:30 +01:00
firmware.c parisc: Add PDC locking functions for rendezvous code 2022-03-29 21:37:12 +02:00
ftrace.c Tracing updates for 5.16: 2021-11-01 20:05:19 -07:00
hardware.c parisc: hardware: Update references to parisc website 2020-06-01 23:02:39 +02:00
head.S parisc: Move common_stext into .text section when CONFIG_HOTPLUG_CPU=y 2022-03-29 21:37:12 +02:00
hpmc.S parisc: Re-use toc_stack as hpmc_stack 2022-01-11 11:57:37 +01:00
inventory.c parisc: Add qemu fw_cfg interface 2020-10-15 08:10:37 +02:00
irq.c parisc: Move CPU startup-related functions into .text section 2022-03-29 21:37:12 +02:00
jump_label.c parisc: Add static branch and JUMP_LABEL feature 2019-05-06 00:10:03 +02:00
kexec.c parisc: add support for kexec_file_load() syscall 2019-09-08 15:41:46 +02:00
kexec_file.c parisc: add support for kexec_file_load() syscall 2019-09-08 15:41:46 +02:00
kgdb.c parisc: Add kgdb io_module to read chars via PDC 2022-01-07 01:29:22 +01:00
kprobes.c parisc: Fix typos in comments 2022-05-08 20:01:12 +02:00
module.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
pa7300lc.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pacache.S parisc: Move disable_sr_hashing_asm() into .text section 2022-03-29 21:37:12 +02:00
parisc_ksyms.c parisc: Drop strnlen_user() in favour of generic version 2021-09-09 12:44:30 +02:00
patch.c parisc: Fix patch code locking and flushing 2022-05-17 21:52:59 +02:00
pci-dma.c parisc: Use constants to encode the space registers like SR_KERNEL 2022-03-11 19:49:31 +01:00
pci.c parisc: Drop comments which are already in pci.h 2019-09-05 16:41:11 +02:00
pdc_chassis.c kernel.h: split out panic and oops helpers 2021-07-01 11:06:04 -07:00
pdc_cons.c tty: pdc_cons, free tty_driver upon failure 2021-07-27 12:17:21 +02:00
pdt.c parisc: Make use of the helper macro kthread_run() 2021-11-01 07:36:01 +01:00
perf.c parisc/perf: open access for CAP_PERFMON privileged process 2020-04-16 12:19:08 -03:00
perf_asm.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
perf_images.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
process.c parisc: Rewrite arch_cpu_idle_dead() for CPU hotplugging 2022-03-29 21:37:12 +02:00
processor.c parisc: Merge model and model name into one line in /proc/cpuinfo 2022-05-08 20:01:11 +02:00
ptrace.c ptrace: Create ptrace_report_syscall_{entry,exit} in ptrace.h 2022-03-10 13:35:08 -06:00
real2.S parisc: Fix and improve kernel stack unwinding 2018-08-13 09:54:17 +02:00
relocate_kernel.S parisc: add kexec syscall support 2019-09-08 15:37:04 +02:00
setup.c Revert "parisc: Mark sched_clock unstable only if clocks are not syncronized" 2022-05-08 20:01:11 +02:00
signal.c ptrace: Cleanups for v5.18 2022-03-28 17:29:53 -07:00
signal32.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
signal32.h parisc: Add vDSO support 2022-03-11 19:49:30 +01:00
smp.c parisc: Find a new timesync master if current CPU is removed 2022-03-29 21:37:13 +02:00
stacktrace.c parisc: Fix implicit declaration of function '__kernel_text_address' 2021-11-13 22:10:56 +01:00
sys_parisc.c parisc: enhance warning regarding usage of O_NONBLOCK 2021-11-01 07:36:00 +01:00
sys_parisc32.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
syscall.S parisc: Add lws_atomic_xchg and lws_atomic_store syscalls 2022-01-07 01:29:21 +01:00
time.c parisc: Mark cr16 clock unstable on all SMP machines 2022-05-08 20:01:12 +02:00
toc.c parisc: Fix missing prototype for 'toc_intr' warning in toc.c 2022-01-20 20:39:19 +01:00
toc_asm.S parisc: Enable TOC (transfer of contents) feature unconditionally 2022-01-11 11:57:37 +01:00
topology.c parisc: Move store_cpu_topology() into text section 2022-03-29 21:37:12 +02:00
traps.c parisc: Fix typos in comments 2022-05-08 20:01:12 +02:00
unaligned.c parisc/unaligned: Enhance user-space visible output 2022-03-11 19:49:31 +01:00
unwind.c parisc: Move thread_info into task struct 2021-11-01 07:35:59 +01:00
vdso.c parisc: Add vDSO support 2022-03-11 19:49:30 +01:00
vmlinux.lds.S Revert "parisc: Fix backtrace to always include init funtion names" 2021-11-22 07:37:31 +01:00