Aren/NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Add MULTIPROCESSOR tlb flushes to armv7_tlb_flushID. Also, invalidate the

Browse Source 
branch predictor.

This function is only used by db_write_bytes and kobj_machdep
This commit is contained in:
skrll 2015-05-16 07:22:37 +00:00
parent cac6d59cc3
commit 930f1887e6
1 changed files with 7 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
sys/arch/arm/arm/cpufunc_asm_armv7.S
View File

@ -108,8 +108,15 @@ END(armv7_tlb_flushD)
STRONG_ALIAS(armv7_tlb_flushI, armv7_tlb_flushID)
ENTRY(armv7_tlb_flushID)
dsb
mov r0, #0
#ifdef MULTIPROCESSOR
mcr p15, 0, r0, c8, c3, 0 @ flush entire I+D tlb, IS
mcr p15, 0, r0, c7, c1, 6 @ branch predictor invalidate, IS
#else
mcr p15, 0, r0, c8, c7, 0 @ flush entire I+D tlb
mcr p15, 0, r0, c7, c5, 6 @ branch predictor invalidate
#endif
dsb @ data synchronization barrier
isb
bx lr