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author | Ingo Molnar <mingo@elte.hu> | 2008-12-31 08:31:57 +0100 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-12-31 08:31:57 +0100 |
commit | a9de18eb761f7c1c860964b2e5addc1a35c7e861 (patch) | |
tree | 886e75fdfd09690cd262ca69cb7f5d1d42b48602 /arch/sparc/kernel/dtlb_miss.S | |
parent | b2aaf8f74cdc84a9182f6cabf198b7763bcb9d40 (diff) | |
parent | 6a94cb73064c952255336cc57731904174b2c58f (diff) |
Merge branch 'linus' into stackprotector
Conflicts:
arch/x86/include/asm/pda.h
kernel/fork.c
Diffstat (limited to 'arch/sparc/kernel/dtlb_miss.S')
-rw-r--r-- | arch/sparc/kernel/dtlb_miss.S | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/arch/sparc/kernel/dtlb_miss.S b/arch/sparc/kernel/dtlb_miss.S new file mode 100644 index 00000000000..09a6a15a710 --- /dev/null +++ b/arch/sparc/kernel/dtlb_miss.S @@ -0,0 +1,39 @@ +/* DTLB ** ICACHE line 1: Context 0 check and TSB load */ + ldxa [%g0] ASI_DMMU_TSB_8KB_PTR, %g1 ! Get TSB 8K pointer + ldxa [%g0] ASI_DMMU, %g6 ! Get TAG TARGET + srlx %g6, 48, %g5 ! Get context + sllx %g6, 22, %g6 ! Zero out context + brz,pn %g5, kvmap_dtlb ! Context 0 processing + srlx %g6, 22, %g6 ! Delay slot + TSB_LOAD_QUAD(%g1, %g4) ! Load TSB entry + cmp %g4, %g6 ! Compare TAG + +/* DTLB ** ICACHE line 2: TSB compare and TLB load */ + bne,pn %xcc, tsb_miss_dtlb ! Miss + mov FAULT_CODE_DTLB, %g3 + stxa %g5, [%g0] ASI_DTLB_DATA_IN ! Load TLB + retry ! Trap done + nop + nop + nop + nop + +/* DTLB ** ICACHE line 3: */ + nop + nop + nop + nop + nop + nop + nop + nop + +/* DTLB ** ICACHE line 4: */ + nop + nop + nop + nop + nop + nop + nop + nop |