Corey Bryant <cor...@linux.vnet.ibm.com> writes: > On 05/23/2013 02:03 PM, Anthony Liguori wrote: >> Corey Bryant <cor...@linux.vnet.ibm.com> writes: >> > One of the difficulties in virtualizing a TPM is that it doesn't support > SR-IOV. So the existing passthrough vTPM can only be used by one guest. > We're planning to provide a software emulated vTPM that uses libtpms > and it needs to store blobs somewhere that is persistent. We can't > store blobs in the host TPM's hardware NVRAM. So we have to virtualize > it in software. And we figured we'd provide a persistent storage > mechanism that other parts of QEMU could use rather than limit it to > just the vTPM's use.
I think you are misunderstanding my feedback. See http://mid.gmane.org/87ehf03dgw....@codemonkey.ws Regards, Anthony Liguori > > -- > Regards, > Corey Bryant > >>> >>> VNVRAM *vnvram; >>> int errcode >>> const VNVRAMEntryName entry_name; >>> const char *blob_w = "blob data"; >>> char *blob_r; >>> uint32_t blob_r_size; >>> >>> vnvram = vnvram_create("drive-ide0-0-0", false, &errcode); >>> strcpy((char *)entry_name, "first-entry"); >>> vnvram_register_entry(vnvram, &entry_name, 1024); >>> vnvram_write_entry(vnvram, &entry_name, (char *)blob_w, strlen(blob_w)+1); >>> vnvram_read_entry(vnvram, &entry_name, &blob_r, &blob_r_size); >>> vnvram_delete(vnvram); >>> >>> Thanks, >>> Corey >>> >>> Corey Bryant (7): >>> vnvram: VNVRAM bdrv support >>> vnvram: VNVRAM in-memory support >>> vnvram: VNVRAM bottom-half r/w scheduling support >>> vnvram: VNVRAM internal APIs >>> vnvram: VNVRAM additional debug support >>> main: Initialize VNVRAM >>> monitor: QMP/HMP support for retrieving VNVRAM details >>> >>> Makefile.objs | 2 + >>> hmp.c | 32 ++ >>> hmp.h | 1 + >>> monitor.c | 7 + >>> qapi-schema.json | 47 ++ >>> qmp-commands.hx | 41 ++ >>> vl.c | 6 + >>> vnvram.c | 1254 >>> ++++++++++++++++++++++++++++++++++++++++++++++++++++++ >>> vnvram.h | 36 ++ >>> 9 files changed, 1426 insertions(+), 0 deletions(-) >>> create mode 100644 vnvram.c >>> create mode 100644 vnvram.h >> >>