diff options
| author | Dmitry Torokhov <dtor_core@ameritech.net> | 2006-04-02 07:08:05 +0200 |
|---|---|---|
| committer | Dmitry Torokhov <dtor_core@ameritech.net> | 2006-04-02 07:08:05 +0200 |
| commit | 95d465fd750897ab32462a6702fbfe1b122cbbc0 (patch) | |
| tree | 65c38b2f11c51bb6932e44dd6c92f15b0091abfe /arch/sparc64/kernel/itlb_miss.S | |
| parent | Input: gameport - fix memory leak (diff) | |
| parent | Merge master.kernel.org:/home/rmk/linux-2.6-serial (diff) | |
| download | linux-95d465fd750897ab32462a6702fbfe1b122cbbc0.tar.xz linux-95d465fd750897ab32462a6702fbfe1b122cbbc0.zip | |
Manual merge with Linus.
Conflicts:
arch/powerpc/kernel/setup-common.c
drivers/input/keyboard/hil_kbd.c
drivers/input/mouse/hil_ptr.c
Diffstat (limited to 'arch/sparc64/kernel/itlb_miss.S')
| -rw-r--r-- | arch/sparc64/kernel/itlb_miss.S | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/arch/sparc64/kernel/itlb_miss.S b/arch/sparc64/kernel/itlb_miss.S new file mode 100644 index 000000000000..ad46e2024f4b --- /dev/null +++ b/arch/sparc64/kernel/itlb_miss.S @@ -0,0 +1,39 @@ +/* ITLB ** ICACHE line 1: Context 0 check and TSB load */ + ldxa [%g0] ASI_IMMU_TSB_8KB_PTR, %g1 ! Get TSB 8K pointer + ldxa [%g0] ASI_IMMU, %g6 ! Get TAG TARGET + srlx %g6, 48, %g5 ! Get context + sllx %g6, 22, %g6 ! Zero out context + brz,pn %g5, kvmap_itlb ! Context 0 processing + srlx %g6, 22, %g6 ! Delay slot + TSB_LOAD_QUAD(%g1, %g4) ! Load TSB entry + cmp %g4, %g6 ! Compare TAG + +/* ITLB ** ICACHE line 2: TSB compare and TLB load */ + bne,pn %xcc, tsb_miss_itlb ! Miss + mov FAULT_CODE_ITLB, %g3 + andcc %g5, _PAGE_EXEC_4U, %g0 ! Executable? + be,pn %xcc, tsb_do_fault + nop ! Delay slot, fill me + stxa %g5, [%g0] ASI_ITLB_DATA_IN ! Load TLB + retry ! Trap done + nop + +/* ITLB ** ICACHE line 3: */ + nop + nop + nop + nop + nop + nop + nop + nop + +/* ITLB ** ICACHE line 4: */ + nop + nop + nop + nop + nop + nop + nop + nop |