Messages in this thread | | | Subject | Re: [PATCH v3 0/3] xen: re-enable booting as Xen PVH guest | From | "Rafael J. Wysocki" <> | Date | Mon, 19 Feb 2018 11:27:15 +0100 |
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On 2/19/2018 11:09 AM, Juergen Gross wrote: > The Xen PVH boot protocol passes vital information to the kernel via > a start_info block. One of the data transferred is the physical address > of the RSDP table. > > Unfortunately PVH support in the kernel didn't use that passed address > for RSDP, but relied on the legacy mechanism searching for the RSDP in > low memory. After a recent change in Xen putting the RSDP to a higher > address booting as PVH guest is now failing. > > This small series repairs that by passing the RSDP address from the > start_info block to ACPI handling. > > Changes in V3: > - instead of using a weak function add a function pointer to x86_init > for obtaining the RSDP address > > Juergen Gross (3): > acpi: introduce acpi_arch_get_root_pointer() for getting rsdp address > x86/acpi: add a new x86_init_acpi structure to x86_init_ops > x86/xen: add pvh specific rsdp address retrieval function > > arch/x86/include/asm/acpi.h | 7 +++++++ > arch/x86/include/asm/x86_init.h | 9 +++++++++ > arch/x86/kernel/x86_init.c | 5 +++++ > arch/x86/xen/enlighten_pvh.c | 14 +++++++++++--- > drivers/acpi/osl.c | 5 ++++- > include/linux/acpi.h | 7 +++++++ > 6 files changed, 43 insertions(+), 4 deletions(-) > The series is fine by me:
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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