85 lines
2.7 KiB
C
85 lines
2.7 KiB
C
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// SPDX-License-Identifier: GPL-2.0-only
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// Copyright 2024 Google LLC
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// Author: Ard Biesheuvel <ardb@google.com>
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#include <linux/types.h>
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#include <asm/tlbflush.h>
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#ifdef CONFIG_CPU_TLB_V4WT
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void v4_flush_user_tlb_range(unsigned long, unsigned long, struct vm_area_struct *);
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void v4_flush_kern_tlb_range(unsigned long, unsigned long);
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struct cpu_tlb_fns v4_tlb_fns __initconst = {
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.flush_user_range = v4_flush_user_tlb_range,
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.flush_kern_range = v4_flush_kern_tlb_range,
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.tlb_flags = v4_tlb_flags,
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};
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#endif
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#ifdef CONFIG_CPU_TLB_V4WB
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void v4wb_flush_user_tlb_range(unsigned long, unsigned long, struct vm_area_struct *);
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void v4wb_flush_kern_tlb_range(unsigned long, unsigned long);
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struct cpu_tlb_fns v4wb_tlb_fns __initconst = {
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.flush_user_range = v4wb_flush_user_tlb_range,
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.flush_kern_range = v4wb_flush_kern_tlb_range,
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.tlb_flags = v4wb_tlb_flags,
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};
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#endif
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#if defined(CONFIG_CPU_TLB_V4WBI) || defined(CONFIG_CPU_TLB_FEROCEON)
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void v4wbi_flush_user_tlb_range(unsigned long, unsigned long, struct vm_area_struct *);
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void v4wbi_flush_kern_tlb_range(unsigned long, unsigned long);
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struct cpu_tlb_fns v4wbi_tlb_fns __initconst = {
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.flush_user_range = v4wbi_flush_user_tlb_range,
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.flush_kern_range = v4wbi_flush_kern_tlb_range,
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.tlb_flags = v4wbi_tlb_flags,
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};
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#endif
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#ifdef CONFIG_CPU_TLB_V6
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void v6wbi_flush_user_tlb_range(unsigned long, unsigned long, struct vm_area_struct *);
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void v6wbi_flush_kern_tlb_range(unsigned long, unsigned long);
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struct cpu_tlb_fns v6wbi_tlb_fns __initconst = {
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.flush_user_range = v6wbi_flush_user_tlb_range,
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.flush_kern_range = v6wbi_flush_kern_tlb_range,
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.tlb_flags = v6wbi_tlb_flags,
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};
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#endif
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#ifdef CONFIG_CPU_TLB_V7
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void v7wbi_flush_user_tlb_range(unsigned long, unsigned long, struct vm_area_struct *);
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void v7wbi_flush_kern_tlb_range(unsigned long, unsigned long);
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struct cpu_tlb_fns v7wbi_tlb_fns __initconst = {
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.flush_user_range = v7wbi_flush_user_tlb_range,
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.flush_kern_range = v7wbi_flush_kern_tlb_range,
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.tlb_flags = IS_ENABLED(CONFIG_SMP) ? v7wbi_tlb_flags_smp
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: v7wbi_tlb_flags_up,
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};
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#ifdef CONFIG_SMP_ON_UP
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/* This will be run-time patched so the offset better be right */
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static_assert(offsetof(struct cpu_tlb_fns, tlb_flags) == 8);
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asm(" .pushsection \".alt.smp.init\", \"a\" \n" \
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" .align 2 \n" \
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" .long v7wbi_tlb_fns + 8 - . \n" \
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" .long " __stringify(v7wbi_tlb_flags_up) " \n" \
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" .popsection \n");
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#endif
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#endif
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#ifdef CONFIG_CPU_TLB_FA
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void fa_flush_user_tlb_range(unsigned long, unsigned long, struct vm_area_struct *);
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void fa_flush_kern_tlb_range(unsigned long, unsigned long);
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struct cpu_tlb_fns fa_tlb_fns __initconst = {
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.flush_user_range = fa_flush_user_tlb_range,
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.flush_kern_range = fa_flush_kern_tlb_range,
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.tlb_flags = fa_tlb_flags,
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};
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#endif
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