diff options
Diffstat (limited to 'hw/npu2.c')
| -rw-r--r-- | hw/npu2.c | 17 |
1 files changed, 12 insertions, 5 deletions
@@ -1257,12 +1257,19 @@ static int64_t npu2_tce_kill(struct phb *phb, uint32_t kill_type, return OPAL_PARAMETER; } - while (npages--) { - val = SETFIELD(NPU2_ATS_TCE_KILL_PENUM, dma_addr, pe_number); - npu2_write(npu, NPU2_ATS_TCE_KILL, NPU2_ATS_TCE_KILL_ONE | val); - dma_addr += tce_size; + if (npages < 128) { + while (npages--) { + val = SETFIELD(NPU2_ATS_TCE_KILL_PENUM, dma_addr, pe_number); + npu2_write(npu, NPU2_ATS_TCE_KILL, NPU2_ATS_TCE_KILL_ONE | val); + dma_addr += tce_size; + } + break; } - break; + /* + * For too many TCEs do not bother with the loop above and simply + * flush everything, going to be lot faster. + */ + /* Fall through */ case OPAL_PCI_TCE_KILL_PE: /* * NPU2 doesn't support killing a PE so fall through |