/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _PARISC_TLBFLUSH_H #define _PARISC_TLBFLUSH_H /* TLB flushing routines.... */ #include <linux/mm.h> #include <linux/sched.h> #include <asm/mmu_context.h> /* This is for the serialisation of PxTLB broadcasts. At least on the * N class systems, only one PxTLB inter processor broadcast can be * active at any one time on the Merced bus. This tlb purge * synchronisation is fairly lightweight and harmless so we activate * it on all systems not just the N class. * It is also used to ensure PTE updates are atomic and consistent * with the TLB. */ extern spinlock_t pa_tlb_lock; #define purge_tlb_start(flags) spin_lock_irqsave(&pa_tlb_lock, flags) #define purge_tlb_end(flags) spin_unlock_irqrestore(&pa_tlb_lock, flags) extern void flush_tlb_all(void); extern void flush_tlb_all_local(void *); #define smp_flush_tlb_all() flush_tlb_all() int __flush_tlb_range(unsigned long sid, unsigned long start, unsigned long end); #define flush_tlb_range(vma, start, end) \ __flush_tlb_range((vma)->vm_mm->context, start, end) #define flush_tlb_kernel_range(start, end) \ __flush_tlb_range(0, start, end) /* * flush_tlb_mm() * * The code to switch to a new context is NOT valid for processes * which play with the space id's. Thus, we have to preserve the * space and just flush the entire tlb. However, the compilers, * dynamic linker, etc, do not manipulate space id's, so there * could be a significant performance benefit in switching contexts * and not flushing the whole tlb. */ static inline void flush_tlb_mm(struct mm_struct *mm) { BUG_ON(mm == &init_mm); /* Should never happen */ #if 1 || defined(CONFIG_SMP) /* Except for very small threads, flushing the whole TLB is * faster than using __flush_tlb_range. The pdtlb and pitlb * instructions are very slow because of the TLB broadcast. * It might be faster to do local range flushes on all CPUs * on PA 2.0 systems. */ flush_tlb_all(); #else /* FIXME: currently broken, causing space id and protection ids * to go out of sync, resulting in faults on userspace accesses. * This approach needs further investigation since running many * small applications (e.g., GCC testsuite) is faster on HP-UX. */ if (mm) { if (mm->context != 0) free_sid(mm->context); mm->context = alloc_sid(); if (mm == current->active_mm) load_context(mm->context); } #endif } static inline void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr) { unsigned long flags, sid; sid = vma->vm_mm->context; purge_tlb_start(flags); mtsp(sid, 1); pdtlb(addr); if (unlikely(split_tlb)) pitlb(addr); purge_tlb_end(flags); } #endif
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agp.h | File | 596 B | 0644 |
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asm-offsets.h | File | 35 B | 0644 |
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asmregs.h | File | 3.04 KB | 0644 |
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assembly.h | File | 12.94 KB | 0644 |
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atomic.h | File | 8.24 KB | 0644 |
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barrier.h | File | 2.44 KB | 0644 |
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bitops.h | File | 5.89 KB | 0644 |
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bug.h | File | 2.35 KB | 0644 |
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bugs.h | File | 340 B | 0644 |
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cache.h | File | 1.59 KB | 0644 |
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cacheflush.h | File | 4.06 KB | 0644 |
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checksum.h | File | 5.48 KB | 0644 |
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cmpxchg.h | File | 3.62 KB | 0644 |
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compat.h | File | 6.52 KB | 0644 |
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compat_ucontext.h | File | 591 B | 0644 |
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delay.h | File | 533 B | 0644 |
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dma-mapping.h | File | 2.42 KB | 0644 |
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dma.h | File | 5.71 KB | 0644 |
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dwarf.h | File | 602 B | 0644 |
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eisa_bus.h | File | 702 B | 0644 |
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eisa_eeprom.h | File | 4.42 KB | 0644 |
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elf.h | File | 14.31 KB | 0644 |
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fb.h | File | 403 B | 0644 |
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fixmap.h | File | 1.15 KB | 0644 |
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floppy.h | File | 6.61 KB | 0644 |
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ftrace.h | File | 379 B | 0644 |
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futex.h | File | 2.66 KB | 0644 |
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grfioctl.h | File | 4.68 KB | 0644 |
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hardirq.h | File | 1.3 KB | 0644 |
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hardware.h | File | 4.09 KB | 0644 |
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hash.h | File | 5.07 KB | 0644 |
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hugetlb.h | File | 1.67 KB | 0644 |
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ide.h | File | 1.09 KB | 0644 |
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io.h | File | 8.14 KB | 0644 |
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irq.h | File | 1.23 KB | 0644 |
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irqflags.h | File | 1.02 KB | 0644 |
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kbdleds.h | File | 477 B | 0644 |
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kmap_types.h | File | 221 B | 0644 |
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ldcw.h | File | 2.15 KB | 0644 |
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led.h | File | 1.33 KB | 0644 |
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linkage.h | File | 759 B | 0644 |
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machdep.h | File | 349 B | 0644 |
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mckinley.h | File | 270 B | 0644 |
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mmu.h | File | 195 B | 0644 |
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mmu_context.h | File | 2.08 KB | 0644 |
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mmzone.h | File | 1.51 KB | 0644 |
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module.h | File | 527 B | 0644 |
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page.h | File | 5.42 KB | 0644 |
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parisc-device.h | File | 1.92 KB | 0644 |
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parport.h | File | 358 B | 0644 |
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pci.h | File | 6.57 KB | 0644 |
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pdc.h | File | 3.93 KB | 0644 |
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pdc_chassis.h | File | 15.06 KB | 0644 |
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pdcpat.h | File | 15 KB | 0644 |
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perf.h | File | 1.89 KB | 0644 |
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perf_event.h | File | 152 B | 0644 |
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pgalloc.h | File | 4.22 KB | 0644 |
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pgtable.h | File | 18.92 KB | 0644 |
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prefetch.h | File | 1.12 KB | 0644 |
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processor.h | File | 9.86 KB | 0644 |
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psw.h | File | 2.39 KB | 0644 |
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ptrace.h | File | 803 B | 0644 |
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ropes.h | File | 9.73 KB | 0644 |
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rt_sigframe.h | File | 745 B | 0644 |
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runway.h | File | 320 B | 0644 |
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sections.h | File | 283 B | 0644 |
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serial.h | File | 124 B | 0644 |
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shmparam.h | File | 263 B | 0644 |
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signal.h | File | 841 B | 0644 |
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smp.h | File | 1.25 KB | 0644 |
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socket.h | File | 311 B | 0644 |
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special_insns.h | File | 1015 B | 0644 |
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spinlock.h | File | 4.02 KB | 0644 |
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spinlock_types.h | File | 483 B | 0644 |
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string.h | File | 247 B | 0644 |
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superio.h | File | 3.25 KB | 0644 |
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switch_to.h | File | 332 B | 0644 |
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syscall.h | File | 1.4 KB | 0644 |
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termios.h | File | 1.72 KB | 0644 |
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thread_info.h | File | 3.15 KB | 0644 |
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timex.h | File | 372 B | 0644 |
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tlb.h | File | 672 B | 0644 |
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tlbflush.h | File | 2.63 KB | 0644 |
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topology.h | File | 900 B | 0644 |
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traps.h | File | 468 B | 0644 |
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uaccess.h | File | 6.55 KB | 0644 |
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ucontext.h | File | 327 B | 0644 |
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unaligned.h | File | 472 B | 0644 |
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unistd.h | File | 5.47 KB | 0644 |
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unwind.h | File | 2.56 KB | 0644 |
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