On Mon, 25 Jun 2018 13:30:10 +0000
linzhecheng <linzhech...@huawei.com> wrote:
> Hi, all,
> I had some problems when doing memory hot plugging. After a lot of tests, I
> was able to stably reproduce the following issues with Windows 2012 R2:
>
> 1. If I hot-plug the memory immediately after hot-plugging the CPUs, these
> memory devices will not be detected by windows OS because I cannot see them
> in the device manager.
> 2. If I add a certain delay (for example, 2s or more) between the
> hot-plugging memory and the CPU, the memory devices will be detected but some
> of them may not be online.
> And Memory Module Properties displaying the following contents:
>
> This device cannot start. (Code 10)
> {Conflicting Address Range}
> The specified address range conflicts with the address space.
it could help if you can find in device manger what it conflicts with
> 3. usb tablet mouse would not work probability after hot adding memory.
>
> Due to the closed nature of windows OS, I can't know what's going on inside.
> Is it related to acpi tables exposure?
> I hope you can give me some advice, thank you.
you also can try running QEMU with cphp_* and mhp_* trace events enabled [*],
it should show ACPI interaction os Windows with QEMU including address
assignment.
*) docs/devel/tracing.txt
