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/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _ASM_X86_TLB_H #define _ASM_X86_TLB_H #define tlb_start_vma(tlb, vma) do { } while (0) #define tlb_end_vma(tlb, vma) do { } while (0) #define tlb_flush tlb_flush static inline void tlb_flush(struct mmu_gather *tlb); #include <asm-generic/tlb.h> static inline void tlb_flush(struct mmu_gather *tlb) { unsigned long start = 0UL, end = TLB_FLUSH_ALL; unsigned int stride_shift = tlb_get_unmap_shift(tlb); if (!tlb->fullmm && !tlb->need_flush_all) { start = tlb->start; end = tlb->end; } flush_tlb_mm_range(tlb->mm, start, end, stride_shift, tlb->freed_tables); } /* * While x86 architecture in general requires an IPI to perform TLB * shootdown, enablement code for several hypervisors overrides * .flush_tlb_others hook in pv_mmu_ops and implements it by issuing * a hypercall. To keep software pagetable walkers safe in this case we * switch to RCU based table free (MMU_GATHER_RCU_TABLE_FREE). See the comment * below 'ifdef CONFIG_MMU_GATHER_RCU_TABLE_FREE' in include/asm-generic/tlb.h * for more details. */ static inline void __tlb_remove_table(void *table) { free_page_and_swap_cache(table); } #endif /* _ASM_X86_TLB_H */