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Re: [Qemu-devel] [PATCH v2 06/11] nvdimm acpi: initialize the resource u

From: Xiao Guangrong
Subject: Re: [Qemu-devel] [PATCH v2 06/11] nvdimm acpi: initialize the resource used by NVDIMM ACPI
Date: Sun, 14 Feb 2016 13:57:27 +0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.5.1 


On 02/08/2016 07:03 PM, Igor Mammedov wrote:

On Wed, 13 Jan 2016 02:50:05 +0800
Xiao Guangrong <address@hidden> wrote:


32 bits IO port starting from 0x0a18 in guest is reserved for NVDIMM
ACPI emulation. The table, NVDIMM_DSM_MEM_FILE, will be patched into
NVDIMM ACPI binary code

OSPM uses this port to tell QEMU the final address of the DSM memory
and notify QEMU to emulate the DSM method

Would you need to pass control to QEMU if each NVDIMM had its whole
label area MemoryRegion mapped right after its storage MemoryRegion?



No, label data is not mapped into guest's address space and it only
can be accessed by DSM method indirectly.
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