From 7f3a4257159dea8e7ef66d1a539dc6df708b8ed3 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 7 Aug 2024 15:17:46 +0200 Subject: Adding upstream version 6.10.3. Signed-off-by: Daniel Baumann --- arch/arm/mm/tlb.c | 84 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 84 insertions(+) create mode 100644 arch/arm/mm/tlb.c (limited to 'arch/arm/mm/tlb.c') diff --git a/arch/arm/mm/tlb.c b/arch/arm/mm/tlb.c new file mode 100644 index 0000000000..4235979312 --- /dev/null +++ b/arch/arm/mm/tlb.c @@ -0,0 +1,84 @@ +// SPDX-License-Identifier: GPL-2.0-only +// Copyright 2024 Google LLC +// Author: Ard Biesheuvel + +#include +#include + +#ifdef CONFIG_CPU_TLB_V4WT +void v4_flush_user_tlb_range(unsigned long, unsigned long, struct vm_area_struct *); +void v4_flush_kern_tlb_range(unsigned long, unsigned long); + +struct cpu_tlb_fns v4_tlb_fns __initconst = { + .flush_user_range = v4_flush_user_tlb_range, + .flush_kern_range = v4_flush_kern_tlb_range, + .tlb_flags = v4_tlb_flags, +}; +#endif + +#ifdef CONFIG_CPU_TLB_V4WB +void v4wb_flush_user_tlb_range(unsigned long, unsigned long, struct vm_area_struct *); +void v4wb_flush_kern_tlb_range(unsigned long, unsigned long); + +struct cpu_tlb_fns v4wb_tlb_fns __initconst = { + .flush_user_range = v4wb_flush_user_tlb_range, + .flush_kern_range = v4wb_flush_kern_tlb_range, + .tlb_flags = v4wb_tlb_flags, +}; +#endif + +#if defined(CONFIG_CPU_TLB_V4WBI) || defined(CONFIG_CPU_TLB_FEROCEON) +void v4wbi_flush_user_tlb_range(unsigned long, unsigned long, struct vm_area_struct *); +void v4wbi_flush_kern_tlb_range(unsigned long, unsigned long); + +struct cpu_tlb_fns v4wbi_tlb_fns __initconst = { + .flush_user_range = v4wbi_flush_user_tlb_range, + .flush_kern_range = v4wbi_flush_kern_tlb_range, + .tlb_flags = v4wbi_tlb_flags, +}; +#endif + +#ifdef CONFIG_CPU_TLB_V6 +void v6wbi_flush_user_tlb_range(unsigned long, unsigned long, struct vm_area_struct *); +void v6wbi_flush_kern_tlb_range(unsigned long, unsigned long); + +struct cpu_tlb_fns v6wbi_tlb_fns __initconst = { + .flush_user_range = v6wbi_flush_user_tlb_range, + .flush_kern_range = v6wbi_flush_kern_tlb_range, + .tlb_flags = v6wbi_tlb_flags, +}; +#endif + +#ifdef CONFIG_CPU_TLB_V7 +void v7wbi_flush_user_tlb_range(unsigned long, unsigned long, struct vm_area_struct *); +void v7wbi_flush_kern_tlb_range(unsigned long, unsigned long); + +struct cpu_tlb_fns v7wbi_tlb_fns __initconst = { + .flush_user_range = v7wbi_flush_user_tlb_range, + .flush_kern_range = v7wbi_flush_kern_tlb_range, + .tlb_flags = IS_ENABLED(CONFIG_SMP) ? v7wbi_tlb_flags_smp + : v7wbi_tlb_flags_up, +}; + +#ifdef CONFIG_SMP_ON_UP +/* This will be run-time patched so the offset better be right */ +static_assert(offsetof(struct cpu_tlb_fns, tlb_flags) == 8); + +asm(" .pushsection \".alt.smp.init\", \"a\" \n" \ + " .align 2 \n" \ + " .long v7wbi_tlb_fns + 8 - . \n" \ + " .long " __stringify(v7wbi_tlb_flags_up) " \n" \ + " .popsection \n"); +#endif +#endif + +#ifdef CONFIG_CPU_TLB_FA +void fa_flush_user_tlb_range(unsigned long, unsigned long, struct vm_area_struct *); +void fa_flush_kern_tlb_range(unsigned long, unsigned long); + +struct cpu_tlb_fns fa_tlb_fns __initconst = { + .flush_user_range = fa_flush_user_tlb_range, + .flush_kern_range = fa_flush_kern_tlb_range, + .tlb_flags = fa_tlb_flags, +}; +#endif -- cgit v1.2.3