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2023-08-27parisc: led: Move register_led_regions() to late_initcall()Helge Deller
Signed-off-by: Helge Deller <deller@gmx.de>
2023-08-27parisc: lba: Convert LBA PCI bus driver to use arch_initcall()Helge Deller
Signed-off-by: Helge Deller <deller@gmx.de>
2023-08-27parisc: gsc: Convert GSC bus driver to use arch_initcall()Helge Deller
This conversion includes LASI, ASP and WAX drivers for now. Signed-off-by: Helge Deller <deller@gmx.de>
2023-08-27parisc: ccio: Convert CCIO driver to use arch_initcall()Helge Deller
Signed-off-by: Helge Deller <deller@gmx.de>
2023-08-27parisc: eisa: Convert HP EISA bus driver to use arch_initcall()Helge Deller
Signed-off-by: Helge Deller <deller@gmx.de>
2023-08-27parisc: hppb: Convert HP PB bus driver to use arch_initcall()Helge Deller
Signed-off-by: Helge Deller <deller@gmx.de>
2023-08-27parisc: dino: Convert dino PCI bus driver to use arch_initcall()Helge Deller
Signed-off-by: Helge Deller <deller@gmx.de>
2023-08-24parisc: implement the new page table range APIMatthew Wilcox (Oracle)
Add set_ptes(), update_mmu_cache_range(), flush_dcache_folio() and flush_icache_pages(). Change the PG_arch_1 (aka PG_dcache_dirty) flag from being per-page to per-folio. Link: https://lkml.kernel.org/r/20230802151406.3735276-21-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Acked-by: Mike Rapoport (IBM) <rppt@kernel.org> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com> Cc: Helge Deller <deller@gmx.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-08-22parisc: unaligned: Simplify 32-bit assembly in emulate_std()Helge Deller
No need to extract upper and lower 32bit values of the 64-bit value. Use gcc's %R1 to access lower 32-bits and %1 to access upper 32-bits instead. Signed-off-by: Helge Deller <deller@gmx.de>
2023-08-22parisc: Use generic mmap top-down layout and brk randomizationHelge Deller
parisc uses a top-down layout by default that exactly fits the generic functions, so get rid of arch specific code and use the generic version by selecting ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT. Note that on parisc the stack always grows up and a "unlimited stack" simply means that the value as defined in CONFIG_STACK_MAX_DEFAULT_SIZE_MB should be used. So RLIM_INFINITY is not an indicator to use the legacy memory layout. Signed-off-by: Helge Deller <deller@gmx.de>
2023-08-22parisc: Fix /proc/cpuinfo output for lscpuHelge Deller
The lscpu command is broken since commit cab56b51ec0e ("parisc: Fix device names in /proc/iomem") added the PA pathname to all PA devices, includig the CPUs. lscpu parses /proc/cpuinfo and now believes it found different CPU types since every CPU is listed with an unique identifier (PA pathname). Fix this problem by simply dropping the PA pathname when listing the CPUs in /proc/cpuinfo. There is no need to show the pathname in this procfs file. Fixes: cab56b51ec0e ("parisc: Fix device names in /proc/iomem") Signed-off-by: Helge Deller <deller@gmx.de> Cc: <stable@vger.kernel.org> # v4.9+
2023-08-20parisc: traps: Drop cpu_lpmc function pointerHelge Deller
This function pointer is only used by one function, so no need to keep such an indirection. Signed-off-by: Helge Deller <deller@gmx.de>
2023-08-20parisc: Drop the pa7300lc LPMC handlerHelge Deller
This was actually never really used, and the info it prints won't help. Drop it. Signed-off-by: Helge Deller <deller@gmx.de>
2023-08-20parisc: lasi: Register LASI power-off feature as sys_off_handlerHelge Deller
Prefer the Linux kernel sys_off_handler functionality over a home-grown implementation. Signed-off-by: Helge Deller <deller@gmx.de>
2023-08-14parisc: Fix CONFIG_TLB_PTLOCK to work with lightweight spinlock checksHelge Deller
For the TLB_PTLOCK checks we used an optimization to store the spc register into the spinlock to unlock it. This optimization works as long as the lightweight spinlock checks (CONFIG_LIGHTWEIGHT_SPINLOCK_CHECK) aren't enabled, because they really check if the lock word is zero or __ARCH_SPIN_LOCK_UNLOCKED_VAL and abort with a kernel crash ("Spinlock was trashed") otherwise. Drop that optimization to make it possible to activate both checks at the same time. Noticed-by: Sam James <sam@gentoo.org> Signed-off-by: Helge Deller <deller@gmx.de> Tested-by: Sam James <sam@gentoo.org> Cc: stable@vger.kernel.org # v6.4+ Fixes: 15e64ef6520e ("parisc: Add lightweight spinlock checks")
2023-08-11Merge tag 'io_uring-6.5-2023-08-11' of git://git.kernel.dk/linuxLinus Torvalds
Pull io_uring fixes from Jens Axboe: "A followup fix for the parisc/SHM_COLOUR fix, also from Helge, which is heading to stable. And then just the io_uring equivalent of the RESOLVE_CACHED fix in commit a0fc452a5d7f from last week for build_open_flags()" * tag 'io_uring-6.5-2023-08-11' of git://git.kernel.dk/linux: io_uring/parisc: Adjust pgoff in io_uring mmap() for parisc io_uring: correct check for O_TMPFILE
2023-08-10parisc: perf: Make cpu_device variable staticHelge Deller
Signed-off-by: Helge Deller <deller@gmx.de>
2023-08-10parisc: ftrace: Add declaration for ftrace_function_trampoline()Helge Deller
Make sparse happy by adding declaration for ftrace_function_trampoline(). Signed-off-by: Helge Deller <deller@gmx.de>
2023-08-10parisc: processor: Include asm/smp.h for init_per_cpu()Helge Deller
Fix sparse warning that init_per_cpu() isn't declared. Signed-off-by: Helge Deller <deller@gmx.de>
2023-08-10parisc: unaligned: Include linux/sysctl.h for unaligned_enabledHelge Deller
Fix sparse warning that unaligned_enabled wasn't declared. Signed-off-by: Helge Deller <deller@gmx.de>
2023-08-10parisc: Move proc_mckinley_root and proc_runway_root to sba_iommuHelge Deller
Clean up the procfs root entries for gsc, runway, and mckinley busses. Signed-off-by: Helge Deller <deller@gmx.de>
2023-08-10parisc: dma: Add prototype for pcxl_dma_startHelge Deller
Signed-off-by: Helge Deller <deller@gmx.de>
2023-08-10parisc: parisc_ksyms: Include libgcc.h for libgcc prototypesHelge Deller
Signed-off-by: Helge Deller <deller@gmx.de>
2023-08-10parisc: firmware: Mark pdc_result buffers localHelge Deller
This fixes a sparse warning which suggest to make those static. Signed-off-by: Helge Deller <deller@gmx.de>
2023-08-10parisc: firmware: Fix sparse context imbalance warningsHelge Deller
Tell sparse about correct context for pdc_cpu_rendezvous_*lock() functions. Signed-off-by: Helge Deller <deller@gmx.de>
2023-08-10parisc: signal: Fix sparse incorrect type in assignment warningHelge Deller
Signed-off-by: Helge Deller <deller@gmx.de>
2023-08-10parisc: pdt: Use PTR_ERR_OR_ZERO() to simplify codeYang Yingliang
Return PTR_ERR_OR_ZERO() instead of return 0 or PTR_ERR() to simplify code. Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Signed-off-by: Helge Deller <deller@gmx.de>
2023-08-10parisc: Fix lightweight spinlock checks to not break futexesHelge Deller
The lightweight spinlock checks verify that a spinlock has either value 0 (spinlock locked) and that not any other bits than in __ARCH_SPIN_LOCK_UNLOCKED_VAL is set. This breaks the current LWS code, which writes the address of the lock into the lock word to unlock it, which was an optimization to save one assembler instruction. Fix it by making spinlock_types.h accessible for asm code, change the LWS spinlock-unlocking code to write __ARCH_SPIN_LOCK_UNLOCKED_VAL into the lock word, and add some missing lightweight spinlock checks to the LWS path. Finally, make the spinlock checks dependend on DEBUG_KERNEL. Noticed-by: John David Anglin <dave.anglin@bell.net> Signed-off-by: Helge Deller <deller@gmx.de> Tested-by: John David Anglin <dave.anglin@bell.net> Cc: stable@vger.kernel.org # v6.4+ Fixes: 15e64ef6520e ("parisc: Add lightweight spinlock checks")
2023-08-08io_uring/parisc: Adjust pgoff in io_uring mmap() for pariscHelge Deller
The changes from commit 32832a407a71 ("io_uring: Fix io_uring mmap() by using architecture-provided get_unmapped_area()") to the parisc implementation of get_unmapped_area() broke glibc's locale-gen executable when running on parisc. This patch reverts those architecture-specific changes, and instead adjusts in io_uring_mmu_get_unmapped_area() the pgoff offset which is then given to parisc's get_unmapped_area() function. This is much cleaner than the previous approach, and we still will get a coherent addresss. This patch has no effect on other architectures (SHM_COLOUR is only defined on parisc), and the liburing testcase stil passes on parisc. Cc: stable@vger.kernel.org # 6.4 Signed-off-by: Helge Deller <deller@gmx.de> Reported-by: Christoph Biedl <linux-kernel.bfrz@manchmal.in-ulm.de> Fixes: 32832a407a71 ("io_uring: Fix io_uring mmap() by using architecture-provided get_unmapped_area()") Fixes: d808459b2e31 ("io_uring: Adjust mapping wrt architecture aliasing requirements") Link: https://lore.kernel.org/r/ZNEyGV0jyI8kOOfz@p100 Signed-off-by: Jens Axboe <axboe@kernel.dk>
2023-08-03parisc: unaligned: Add required spaces after ','hanyu001@208suo.com
Fix checkpatch warnings: unaligned.c:475: ERROR: space required after that ',' Signed-off-by: Yu Han <hanyu001@208suo.com> Signed-off-by: Helge Deller <deller@gmx.de>
2023-08-03parisc: pci-dma: remove unused and dead EISA code and commentPetr Tesarik
Clearly, this code isn't needed, but it gives a false positive when grepping the complete source tree for coherent_dma_mask. Signed-off-by: Petr Tesarik <petr.tesarik.ext@huawei.com> Signed-off-by: Helge Deller <deller@gmx.de>
2023-07-27arch: Register fchmodat2, usually as syscall 452Palmer Dabbelt
This registers the new fchmodat2 syscall in most places as nuber 452, with alpha being the exception where it's 562. I found all these sites by grepping for fspick, which I assume has found me everything. Signed-off-by: Palmer Dabbelt <palmer@sifive.com> Signed-off-by: Alexey Gladkov <legion@kernel.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Message-Id: <a677d521f048e4ca439e7080a5328f21eb8e960e.1689092120.git.legion@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-07-22Merge tag 'io_uring-6.5-2023-07-21' of git://git.kernel.dk/linuxLinus Torvalds
Pull io_uring fixes from Jens Axboe: - Fix for io-wq not always honoring REQ_F_NOWAIT, if it was set and punted directly (eg via DRAIN) (me) - Capability check fix (Ondrej) - Regression fix for the mmap changes that went into 6.4, which apparently broke IA64 (Helge) * tag 'io_uring-6.5-2023-07-21' of git://git.kernel.dk/linux: ia64: mmap: Consider pgoff when searching for free mapping io_uring: Fix io_uring mmap() by using architecture-provided get_unmapped_area() io_uring: treat -EAGAIN for REQ_F_NOWAIT as final for io-wq io_uring: don't audit the capability check in io_uring_create()
2023-07-21io_uring: Fix io_uring mmap() by using architecture-provided get_unmapped_area()Helge Deller
The io_uring testcase is broken on IA-64 since commit d808459b2e31 ("io_uring: Adjust mapping wrt architecture aliasing requirements"). The reason is, that this commit introduced an own architecture independend get_unmapped_area() search algorithm which finds on IA-64 a memory region which is outside of the regular memory region used for shared userspace mappings and which can't be used on that platform due to aliasing. To avoid similar problems on IA-64 and other platforms in the future, it's better to switch back to the architecture-provided get_unmapped_area() function and adjust the needed input parameters before the call. Beside fixing the issue, the function now becomes easier to understand and maintain. This patch has been successfully tested with the io_uring testcase on physical x86-64, ppc64le, IA-64 and PA-RISC machines. On PA-RISC the LTP mmmap testcases did not report any regressions. Cc: stable@vger.kernel.org # 6.4 Signed-off-by: Helge Deller <deller@gmx.de> Reported-by: matoro <matoro_mailinglist_kernel@matoro.tk> Fixes: d808459b2e31 ("io_uring: Adjust mapping wrt architecture aliasing requirements") Link: https://lore.kernel.org/r/20230721152432.196382-2-deller@gmx.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2023-07-03parisc: syscalls: Avoid compiler warnings with W=1Helge Deller
We do not want to add prototypes for all parisc specific syscalls, so simply drop such warnings when building the kernel. Signed-off-by: Helge Deller <deller@gmx.de>
2023-07-03parisc: unwind: Avoid missing prototype warning for handle_interruption()Helge Deller
Signed-off-by: Helge Deller <deller@gmx.de>
2023-07-03parisc: smp: Add declaration for start_cpu_itimer()Helge Deller
Avoid gcc warning about missing prototype for start_cpu_itimer(). Signed-off-by: Helge Deller <deller@gmx.de>
2023-07-03parisc: pdt: Get prototype for arch_report_meminfo()Helge Deller
Include linux/proc_fs.h to avoid compiler warning about missing prototype for 'arch_report_meminfo' Signed-off-by: Helge Deller <deller@gmx.de>
2023-06-30parisc: irq: Add irq-related function declarationsHelge Deller
Move function declarations for do_cpu_irq_mask(), timer_interrupt() and ipi_interrupt() to header file. Signed-off-by: Helge Deller <deller@gmx.de>
2023-06-30parisc: Move init function declarations into header fileHelge Deller
Clean up the code to not have external function declarations inside the C source files. Reduces warnings when compiled with W=1. Signed-off-by: Helge Deller <deller@gmx.de>
2023-06-30parisc: unaligned: Include header file to avoid missing prototype warningsHelge Deller
Signed-off-by: Helge Deller <deller@gmx.de>
2023-06-30parisc: signal: Mark do_notify_resume() and sys_rt_sigreturn() asmlinkageHelge Deller
Signed-off-by: Helge Deller <deller@gmx.de>
2023-06-30parisc: unwind: Mark start and stop variables __maybe_unusedHelge Deller
Signed-off-by: Helge Deller <deller@gmx.de>
2023-06-30parisc: traps: Mark functions staticHelge Deller
Signed-off-by: Helge Deller <deller@gmx.de>
2023-06-30parisc: processor: Fix kdoc for init_cpu_profiler()Helge Deller
Signed-off-by: Helge Deller <deller@gmx.de>
2023-06-30parisc: sys_parisc: parisc_personality() is called from asm codeHelge Deller
Signed-off-by: Helge Deller <deller@gmx.de>
2023-06-30parisc: pci-dma: Make pcxl_alloc_range() staticHelge Deller
Signed-off-by: Helge Deller <deller@gmx.de>
2023-06-30parisc: Mark image_size __maybe_unused in perf_write()Helge Deller
Signed-off-by: Helge Deller <deller@gmx.de>
2023-06-30parisc: module: Mark symindex __maybe_unusedHelge Deller
Signed-off-by: Helge Deller <deller@gmx.de>
2023-06-30parisc: pdc_chassis: Fix kdoc warningsHelge Deller
Signed-off-by: Helge Deller <deller@gmx.de>
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