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Re: [Xen-devel] [RFC XEN PATCH v4 33/41] tools/libacpi, hvmloader: detect QEMU fw_cfg interface

On Thu, Dec 07, 2017 at 06:10:22PM +0800, Haozhong Zhang wrote:
> Add a function in libacpi to detect QEMU fw_cfg interface. Limit the
> usage of fw_cfg interface to hvmloader now, so use stub functions for
> others.

I think libacpi is not the right place for a driver. The fw_cfg driver
would be better in hvmloader.

As to copy the ACPI tables from fw_cfg to libacpi, maybe the passthrough
tables (or an improvement of it) could be use. (It is already to to add
extra tables from libxl (HVM_XS_ACPI_PT_ADDRESS).)

Anthony PERARD

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