Re: [PATCH 0/2] Init vNVDIMM LSA if applicable

[Igor Mammedov <imammedo@redhat.com>]

On Tue, 29 Mar 2022 15:07:41 +0800
Robert Hoo <robert.hu@linux.intel.com> wrote:

> QEMU option "-device nvdimm,...,label-size=" designates a vNVDIMM with
> Label Storage Area (LSA), where stores the namespace labels and conforms to
> some format and rules defined by NVDIMM label protocol[1].
> 
> Recent guest Kernel, will by validating LSA to determine if the NVDIMM is
> label-capable. So without initialization, guest Kernel will judge it
> label-less, though it actually support label.
> 
> This patch set, is to init vNVDIMM's LSA, so that guest Kernel can
> correctly identify and use it.
> 
> [1]:

> https://uefi.org/sites/default/files/resources/ACPI_Spec_6_4_Jan22.pdf,
> Section 13.19.
perhaps there is a typo here,
In above spec, chapter 13 is "ACPI SYSTEM MANAGEMENT BUS INTERFACE SPECIFICATION"
and there is only 13.1-13.3 there.

> 
> Robert Hoo (2):
>   NVDIMM: rename NVDIMM::label_size to NVDIMM::lsa_size
>   NVDIMM: Init vNVDIMM's LSA index block if it hasn't been
> 
>  docs/nvdimm.txt         |   4 +-
>  hw/acpi/nvdimm.c        |  14 +-
>  hw/mem/nvdimm.c         | 381 ++++++++++++++++++++++++++++++++++++++--
>  include/hw/mem/nvdimm.h | 108 +++++++++++-
>  4 files changed, 485 insertions(+), 22 deletions(-)
> 
> 
> base-commit: 27fc9f365d6f60ff86c2e2be57289bb47a2be882