On Mon, Feb 19, 2018 at 12:27 PM, Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> wrote: > 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@xxxxxxxxx> Don't know much about Xen, though the ACPI / x86 stubs are exactly what I'm wanting! Thanks. Reviewed-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx> -- With Best Regards, Andy Shevchenko -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
