In the non-EFI boot path the ACPI RSDP table is currently found via either EBDA or by searching through low memory for the RSDP magic. This requires the RSDP to be located in the first 1MB of physical memory. Xen PVH guests, however, get the RSDP address via the start of day information block.
In order to support an arbitrary RSDP address this patch series adds the physical address of the RSDP to the boot params structure filled by the boot loader. Juergen Gross (3): x86/xen: fix boot loader version reported for pvh guests x86/boot: add acpi rsdp address to setup_header x86/acpi: take rsdp address for boot params if available Documentation/x86/boot.txt | 32 +++++++++++++++++++++++++++++++- arch/x86/boot/header.S | 6 +++++- arch/x86/include/asm/acpi.h | 7 +++++++ arch/x86/include/asm/x86_init.h | 2 ++ arch/x86/include/uapi/asm/bootparam.h | 4 ++++ arch/x86/kernel/acpi/boot.c | 6 ++++++ arch/x86/kernel/head32.c | 1 + arch/x86/kernel/head64.c | 2 ++ arch/x86/kernel/setup.c | 17 +++++++++++++++++ arch/x86/kernel/x86_init.c | 3 +-- arch/x86/xen/enlighten_pvh.c | 2 +- 11 files changed, 77 insertions(+), 5 deletions(-) -- 2.16.4 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
