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Linux/arch/arm/mm/tlb-fa.S

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Diff markup

Differences between /arch/arm/mm/tlb-fa.S (Version linux-6.12-rc7) and /arch/sparc/mm/tlb-fa.S (Version linux-5.4.285)


  1 /* SPDX-License-Identifier: GPL-2.0-only */       
  2 /*                                                
  3  *  linux/arch/arm/mm/tlb-fa.S                    
  4  *                                                
  5  *  Copyright (C) 2005 Faraday Corp.              
  6  *  Copyright (C) 2008-2009 Paulius Zaleckas <p    
  7  *                                                
  8  * Based on tlb-v4wbi.S:                          
  9  *  Copyright (C) 1997-2002 Russell King          
 10  *                                                
 11  *  ARM architecture version 4, Faraday variat    
 12  *  This assume an unified TLBs, with a write     
 13  *                                                
 14  *  Processors: FA520 FA526 FA626                 
 15  */                                               
 16 #include <linux/linkage.h>                        
 17 #include <linux/init.h>                           
 18 #include <linux/cfi_types.h>                      
 19 #include <asm/assembler.h>                        
 20 #include <asm/asm-offsets.h>                      
 21 #include <asm/tlbflush.h>                         
 22 #include "proc-macros.S"                          
 23                                                   
 24                                                   
 25 /*                                                
 26  *      flush_user_tlb_range(start, end, mm)      
 27  *                                                
 28  *      Invalidate a range of TLB entries in t    
 29  *                                                
 30  *      - start - range start address             
 31  *      - end   - range end address               
 32  *      - mm    - mm_struct describing address    
 33  */                                               
 34         .align  4                                 
 35 SYM_TYPED_FUNC_START(fa_flush_user_tlb_range)     
 36         vma_vm_mm ip, r2                          
 37         act_mm  r3                                
 38         eors    r3, ip, r3                        
 39         retne   lr                                
 40         mov     r3, #0                            
 41         mcr     p15, 0, r3, c7, c10, 4            
 42         bic     r0, r0, #0x0ff                    
 43         bic     r0, r0, #0xf00                    
 44 1:      mcr     p15, 0, r0, c8, c7, 1             
 45         add     r0, r0, #PAGE_SZ                  
 46         cmp     r0, r1                            
 47         blo     1b                                
 48         mcr     p15, 0, r3, c7, c10, 4            
 49         ret     lr                                
 50 SYM_FUNC_END(fa_flush_user_tlb_range)             
 51                                                   
 52                                                   
 53 SYM_TYPED_FUNC_START(fa_flush_kern_tlb_range)     
 54         mov     r3, #0                            
 55         mcr     p15, 0, r3, c7, c10, 4            
 56         bic     r0, r0, #0x0ff                    
 57         bic     r0, r0, #0xf00                    
 58 1:      mcr     p15, 0, r0, c8, c7, 1             
 59         add     r0, r0, #PAGE_SZ                  
 60         cmp     r0, r1                            
 61         blo     1b                                
 62         mcr     p15, 0, r3, c7, c10, 4            
 63         mcr     p15, 0, r3, c7, c5, 4             
 64         ret     lr                                
 65 SYM_FUNC_END(fa_flush_kern_tlb_range)             
                                                      

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