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Re: [PATCH 0/2] Init vNVDIMM LSA if applicable
From: |
Igor Mammedov |
Subject: |
Re: [PATCH 0/2] Init vNVDIMM LSA if applicable |
Date: |
Thu, 31 Mar 2022 14:03:25 +0200 |
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