mirror of
https://github.com/torvalds/linux.git
synced 2026-05-04 14:32:27 -04:00
e5075d8ec5
Pull more RISC-V updates from Palmer Dabbelt: - Support for tuning for systems with fast misaligned accesses. - Support for SBI-based suspend. - Support for the new SBI debug console extension. - The T-Head CMOs now use PA-based flushes. - Support for enabling the V extension in kernel code. - Optimized IP checksum routines. - Various ftrace improvements. - Support for archrandom, which depends on the Zkr extension. - The build is no longer broken under NET=n, KUNIT=y for ports that don't define their own ipv6 checksum. * tag 'riscv-for-linus-6.8-mw4' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (56 commits) lib: checksum: Fix build with CONFIG_NET=n riscv: lib: Check if output in asm goto supported riscv: Fix build error on rv32 + XIP riscv: optimize ELF relocation function in riscv RISC-V: Implement archrandom when Zkr is available riscv: Optimize hweight API with Zbb extension riscv: add dependency among Image(.gz), loader(.bin), and vmlinuz.efi samples: ftrace: Add RISC-V support for SAMPLE_FTRACE_DIRECT[_MULTI] riscv: ftrace: Add DYNAMIC_FTRACE_WITH_DIRECT_CALLS support riscv: ftrace: Make function graph use ftrace directly riscv: select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY lib/Kconfig.debug: Update AS_HAS_NON_CONST_LEB128 comment and name riscv: Restrict DWARF5 when building with LLVM to known working versions riscv: Hoist linker relaxation disabling logic into Kconfig kunit: Add tests for csum_ipv6_magic and ip_fast_csum riscv: Add checksum library riscv: Add checksum header riscv: Add static key for misaligned accesses asm-generic: Improve csum_fold RISC-V: selftests: cbo: Ensure asm operands match constraints ...
81 lines
2.5 KiB
C
81 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2009 Chen Liqin <liqin.chen@sunplusct.com>
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* Copyright (C) 2012 Regents of the University of California
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*/
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#ifndef _ASM_RISCV_TLBFLUSH_H
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#define _ASM_RISCV_TLBFLUSH_H
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#include <linux/mm_types.h>
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#include <asm/smp.h>
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#include <asm/errata_list.h>
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#define FLUSH_TLB_MAX_SIZE ((unsigned long)-1)
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#define FLUSH_TLB_NO_ASID ((unsigned long)-1)
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#ifdef CONFIG_MMU
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extern unsigned long asid_mask;
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static inline void local_flush_tlb_all(void)
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{
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__asm__ __volatile__ ("sfence.vma" : : : "memory");
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}
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/* Flush one page from local TLB */
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static inline void local_flush_tlb_page(unsigned long addr)
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{
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ALT_FLUSH_TLB_PAGE(__asm__ __volatile__ ("sfence.vma %0" : : "r" (addr) : "memory"));
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}
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#else /* CONFIG_MMU */
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#define local_flush_tlb_all() do { } while (0)
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#define local_flush_tlb_page(addr) do { } while (0)
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#endif /* CONFIG_MMU */
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#if defined(CONFIG_SMP) && defined(CONFIG_MMU)
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void flush_tlb_all(void);
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void flush_tlb_mm(struct mm_struct *mm);
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void flush_tlb_mm_range(struct mm_struct *mm, unsigned long start,
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unsigned long end, unsigned int page_size);
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void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr);
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void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
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unsigned long end);
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void flush_tlb_kernel_range(unsigned long start, unsigned long end);
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void local_flush_tlb_kernel_range(unsigned long start, unsigned long end);
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#ifdef CONFIG_TRANSPARENT_HUGEPAGE
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#define __HAVE_ARCH_FLUSH_PMD_TLB_RANGE
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void flush_pmd_tlb_range(struct vm_area_struct *vma, unsigned long start,
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unsigned long end);
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#endif
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bool arch_tlbbatch_should_defer(struct mm_struct *mm);
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void arch_tlbbatch_add_pending(struct arch_tlbflush_unmap_batch *batch,
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struct mm_struct *mm,
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unsigned long uaddr);
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void arch_flush_tlb_batched_pending(struct mm_struct *mm);
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void arch_tlbbatch_flush(struct arch_tlbflush_unmap_batch *batch);
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#else /* CONFIG_SMP && CONFIG_MMU */
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#define flush_tlb_all() local_flush_tlb_all()
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#define flush_tlb_page(vma, addr) local_flush_tlb_page(addr)
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static inline void flush_tlb_range(struct vm_area_struct *vma,
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unsigned long start, unsigned long end)
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{
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local_flush_tlb_all();
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}
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/* Flush a range of kernel pages */
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static inline void flush_tlb_kernel_range(unsigned long start,
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unsigned long end)
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{
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local_flush_tlb_all();
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}
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#define flush_tlb_mm(mm) flush_tlb_all()
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#define flush_tlb_mm_range(mm, start, end, page_size) flush_tlb_all()
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#endif /* !CONFIG_SMP || !CONFIG_MMU */
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#endif /* _ASM_RISCV_TLBFLUSH_H */
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