diff options
Diffstat (limited to 'arch/mips/mm')
| -rw-r--r-- | arch/mips/mm/physaddr.c | 2 | ||||
| -rw-r--r-- | arch/mips/mm/tlb-r4k.c | 56 |
2 files changed, 56 insertions, 2 deletions
diff --git a/arch/mips/mm/physaddr.c b/arch/mips/mm/physaddr.c index f9b8c85e9843..a6b1bf82057a 100644 --- a/arch/mips/mm/physaddr.c +++ b/arch/mips/mm/physaddr.c @@ -30,7 +30,7 @@ static inline bool __debug_virt_addr_valid(unsigned long x) phys_addr_t __virt_to_phys(volatile const void *x) { WARN(!__debug_virt_addr_valid((unsigned long)x), - "virt_to_phys used for non-linear address: %pK (%pS)\n", + "virt_to_phys used for non-linear address: %p (%pS)\n", x, x); return __virt_to_phys_nodebug(x); diff --git a/arch/mips/mm/tlb-r4k.c b/arch/mips/mm/tlb-r4k.c index 76f3b9c0a9f0..347126dc010d 100644 --- a/arch/mips/mm/tlb-r4k.c +++ b/arch/mips/mm/tlb-r4k.c @@ -508,6 +508,60 @@ static int __init set_ntlb(char *str) __setup("ntlb=", set_ntlb); +/* Initialise all TLB entries with unique values */ +static void r4k_tlb_uniquify(void) +{ + int entry = num_wired_entries(); + + htw_stop(); + write_c0_entrylo0(0); + write_c0_entrylo1(0); + + while (entry < current_cpu_data.tlbsize) { + unsigned long asid_mask = cpu_asid_mask(¤t_cpu_data); + unsigned long asid = 0; + int idx; + + /* Skip wired MMID to make ginvt_mmid work */ + if (cpu_has_mmid) + asid = MMID_KERNEL_WIRED + 1; + + /* Check for match before using UNIQUE_ENTRYHI */ + do { + if (cpu_has_mmid) { + write_c0_memorymapid(asid); + write_c0_entryhi(UNIQUE_ENTRYHI(entry)); + } else { + write_c0_entryhi(UNIQUE_ENTRYHI(entry) | asid); + } + mtc0_tlbw_hazard(); + tlb_probe(); + tlb_probe_hazard(); + idx = read_c0_index(); + /* No match or match is on current entry */ + if (idx < 0 || idx == entry) + break; + /* + * If we hit a match, we need to try again with + * a different ASID. + */ + asid++; + } while (asid < asid_mask); + + if (idx >= 0 && idx != entry) + panic("Unable to uniquify TLB entry %d", idx); + + write_c0_index(entry); + mtc0_tlbw_hazard(); + tlb_write_indexed(); + entry++; + } + + tlbw_use_hazard(); + htw_start(); + flush_micro_tlb(); +} + /* * Configure TLB (for init or after a CPU has been powered off). */ @@ -547,7 +601,7 @@ static void r4k_tlb_configure(void) temp_tlb_entry = current_cpu_data.tlbsize - 1; /* From this point on the ARC firmware is dead. */ - local_flush_tlb_all(); + r4k_tlb_uniquify(); /* Did I tell you that ARC SUCKS? */ } |