diff options
| author | Ingo Molnar <mingo@kernel.org> | 2019-06-17 12:29:16 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2019-06-17 12:29:16 +0200 |
| commit | bddb3636737f658886a0a02b64db5366bba3428e (patch) | |
| tree | 8f7ffcb42803fa0bb3378ef969545e4a5e57262c /arch/arc/mm/tlb.c | |
| parent | 3384c78631dd722c2cdc5c57fbdd39fc1b5a9f2d (diff) | |
| parent | cbb99c0f588737ec98c333558922ce47e9a95827 (diff) | |
Merge branch 'x86/cpu' into perf/core, to pick up dependent changes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/arc/mm/tlb.c')
| -rw-r--r-- | arch/arc/mm/tlb.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/arch/arc/mm/tlb.c b/arch/arc/mm/tlb.c index 4097764fea234..fa18c00b0cfd7 100644 --- a/arch/arc/mm/tlb.c +++ b/arch/arc/mm/tlb.c @@ -911,9 +911,11 @@ void do_tlb_overlap_fault(unsigned long cause, unsigned long address, struct pt_regs *regs) { struct cpuinfo_arc_mmu *mmu = &cpuinfo_arc700[smp_processor_id()].mmu; - unsigned int pd0[mmu->ways]; unsigned long flags; - int set; + int set, n_ways = mmu->ways; + + n_ways = min(n_ways, 4); + BUG_ON(mmu->ways > 4); local_irq_save(flags); @@ -921,9 +923,10 @@ void do_tlb_overlap_fault(unsigned long cause, unsigned long address, for (set = 0; set < mmu->sets; set++) { int is_valid, way; + unsigned int pd0[4]; /* read out all the ways of current set */ - for (way = 0, is_valid = 0; way < mmu->ways; way++) { + for (way = 0, is_valid = 0; way < n_ways; way++) { write_aux_reg(ARC_REG_TLBINDEX, SET_WAY_TO_IDX(mmu, set, way)); write_aux_reg(ARC_REG_TLBCOMMAND, TLBRead); @@ -937,14 +940,14 @@ void do_tlb_overlap_fault(unsigned long cause, unsigned long address, continue; /* Scan the set for duplicate ways: needs a nested loop */ - for (way = 0; way < mmu->ways - 1; way++) { + for (way = 0; way < n_ways - 1; way++) { int n; if (!pd0[way]) continue; - for (n = way + 1; n < mmu->ways; n++) { + for (n = way + 1; n < n_ways; n++) { if (pd0[way] != pd0[n]) continue; |