On Tue, Oct 09, 2018 at 01:03:01PM +0200, Juergen Gross wrote:
> Xen PVH guests will have the RSDP at an arbitrary address. Support that
> by passing the RSDP address via the boot parameters to Linux.
>
> The new protocol version 2.14 requires to set version to 0x8000 ored
> with the actually use protocol version (the minimum of the kernel
> supplied protocol version and the grub2 supported protocol version)
> if 2.14 or higher are in effect.
>
> Signed-off-by: Juergen Gross <jgr...@suse.com>
> ---
> V2: add oring 0x8000 to version field
> ---
> grub-core/loader/i386/linux.c | 9 +++++++++
> include/grub/i386/linux.h | 5 ++++-
> 2 files changed, 13 insertions(+), 1 deletion(-)
>
> diff --git a/grub-core/loader/i386/linux.c b/grub-core/loader/i386/linux.c
> index 4eab55a2d..f96309476 100644
> --- a/grub-core/loader/i386/linux.c
> +++ b/grub-core/loader/i386/linux.c
> @@ -35,6 +35,7 @@
> #include <grub/i18n.h>
> #include <grub/lib/cmdline.h>
> #include <grub/linux.h>
> +#include <grub/machine/kernel.h>
Probably this change belongs to another patch.
> GRUB_MOD_LICENSE ("GPLv3+");
>
> @@ -750,6 +751,14 @@ grub_cmd_linux (grub_command_t cmd __attribute__
> ((unused)),
> prot_init_space = page_align (prot_size) * 3;
> }
>
> +#ifdef GRUB_KERNEL_USE_RSDP_ADDR
> + if (grub_le_to_cpu16 (lh.version) >= 0x020e)
> + lh.acpi_rsdp_addr = grub_le_to_cpu64 (grub_rsdp_addr);
> +#endif
It seems to me that this belongs to patch #8. Does not it?
Daniel
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