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charset="utf-8" From: Klaus Jensen If the host sets CC.CSS to 111b, all commands submitted to I/O queues should be completed with status Invalid Command Opcode. Note that this is technically a v1.4 feature, but it does not hurt to implement before we finally bump the reported version implemented. Reviewed-by: Dmitry Fomichev Signed-off-by: Klaus Jensen Signed-off-by: Keith Busch --- include/block/nvme.h | 5 +++++ hw/block/nvme.c | 4 ++++ 2 files changed, 9 insertions(+) diff --git a/include/block/nvme.h b/include/block/nvme.h index 521533fd2a10..6de2d5aa75a9 100644 --- a/include/block/nvme.h +++ b/include/block/nvme.h @@ -115,6 +115,11 @@ enum NvmeCcMask { #define NVME_CC_IOSQES(cc) ((cc >> CC_IOSQES_SHIFT) & CC_IOSQES_MASK) #define NVME_CC_IOCQES(cc) ((cc >> CC_IOCQES_SHIFT) & CC_IOCQES_MASK) =20 +enum NvmeCcCss { + NVME_CC_CSS_NVM =3D 0x0, + NVME_CC_CSS_ADMIN_ONLY =3D 0x7, +}; + enum NvmeCstsShift { CSTS_RDY_SHIFT =3D 0, CSTS_CFS_SHIFT =3D 1, diff --git a/hw/block/nvme.c b/hw/block/nvme.c index c1323ca869f1..32c35fe58768 100644 --- a/hw/block/nvme.c +++ b/hw/block/nvme.c @@ -1026,6 +1026,10 @@ static uint16_t nvme_io_cmd(NvmeCtrl *n, NvmeRequest= *req) trace_pci_nvme_io_cmd(nvme_cid(req), nsid, nvme_sqid(req), req->cmd.opcode, nvme_io_opc_str(req->cmd.opcode= )); =20 + if (NVME_CC_CSS(n->bar.cc) =3D=3D NVME_CC_CSS_ADMIN_ONLY) { + return NVME_INVALID_OPCODE | NVME_DNR; + } + if (!nvme_nsid_valid(n, nsid)) { return NVME_INVALID_NSID | NVME_DNR; } --=20 2.29.1