Re: [Qemu-devel] [RFC PATCH 3/9][SeaBIOS] acpi: generate hotplug memory devices.

[Kevin O'Connor]

On Thu, Apr 19, 2012 at 04:08:41PM +0200, Vasilis Liaskovitis wrote:
>  The memory device generation is guided by qemu paravirt info. Seabios
>  first uses the info to setup SRAT entries for the hotplug-able memory slots.
>  Afterwards, build_memssdt uses the created SRAT entries to generate
>  appropriate memory device objects. One memory device (and corresponding SRAT
>  entry) is generated for each hotplug-able qemu memslot. Currently no SSDT
>  memory device is created for initial system memory (the method can be
>  generalized to all memory though).
> 
>  Signed-off-by: Vasilis Liaskovitis <address@hidden>
> ---
>  src/acpi.c |  151 
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++--
>  1 files changed, 147 insertions(+), 4 deletions(-)
> 
> diff --git a/src/acpi.c b/src/acpi.c
> index 30888b9..5580099 100644
> --- a/src/acpi.c
> +++ b/src/acpi.c
> @@ -484,6 +484,131 @@ build_ssdt(void)
>      return ssdt;
>  }
>  
> +static unsigned char ssdt_mem[] = {
> +    0x5b,0x82,0x47,0x07,0x4d,0x50,0x41,0x41,

This patch looks like it uses the SSDT generation mechanism that was
present in SeaBIOS v1.6.3.  Since then, however, the runtime AML code
generation has been improved to be more dynamic.  Any runtime
generated AML code should be updated to use the newer mechanisms.

-Kevin