Jonathan Cameron wrote: > Inject poison using qmp command cxl-inject-poison to add an entry to the > poison list. > > For now, the poison is not returned CXL.mem reads, but only via the > mailbox command Get Poison List. > > See CXL rev 3.0, sec 8.2.9.8.4.1 Get Poison list (Opcode 4300h) > > Kernel patches to use this interface here: > https://lore.kernel.org/linux-cxl/cover.1665606782.git.alison.schofi...@intel.com/ > > To inject poison using qmp (telnet to the qmp port) > { "execute": "qmp_capabilities" } > > { "execute": "cxl-inject-poison", > "arguments": { > "path": "/machine/peripheral/cxl-pmem0", > "start": 2048, > "length": 256 > } > } > > Adjusted to select a device on your machine. > > Note that the poison list supported is kept short enough to avoid the > complexity of state machine that is needed to handle the MORE flag. >
Reviewed-by: Ira Weiny <ira.we...@intel.com> > Signed-off-by: Jonathan Cameron <jonathan.came...@huawei.com> > > --- > v4: > - Widen the mask on Poison source (lower bits of the address) > to allow for Vendor Defined. Change will make it easier to potentially > add a means to inject such poison in the future. Today it has no > impact. [...]
