On Tue, Mar 24, 2015 at 10:02:47PM +0800, Hanjun Guo wrote: > Introduce a new function map_gicc_mpidr() to allow MPIDRs to be obtained > from the GICC Structure introduced by ACPI 5.1, since MPIDR for ARM64 is > 64-bit, so typedef u64 for phys_cpuid_t. > > The ARM architecture defines the MPIDR register as the CPU hardware > identifier. This patch adds the code infrastructure to retrieve the MPIDR > values from the ARM ACPI GICC structure in order to look-up the kernel CPU > hardware ids required by the ACPI core code to identify CPUs. > > CC: Rafael J. Wysocki <[email protected]> > CC: Catalin Marinas <[email protected]> > CC: Will Deacon <[email protected]> > Tested-by: Suravee Suthikulpanit <[email protected]> > Tested-by: Yijing Wang <[email protected]> > Tested-by: Mark Langsdorf <[email protected]> > Tested-by: Jon Masters <[email protected]> > Tested-by: Timur Tabi <[email protected]> > Tested-by: Robert Richter <[email protected]> > Acked-by: Robert Richter <[email protected]> > Acked-by: Lorenzo Pieralisi <[email protected]> > Acked-by: Rafael J. Wysocki <[email protected]> > Reviewed-by: Grant Likely <[email protected]> > Signed-off-by: Hanjun Guo <[email protected]> > --- > arch/arm64/include/asm/acpi.h | 12 ++++++++++++ > drivers/acpi/processor_core.c | 30 ++++++++++++++++++++++++++++++ > 2 files changed, 42 insertions(+) > > diff --git a/arch/arm64/include/asm/acpi.h b/arch/arm64/include/asm/acpi.h > index 9719921..eea0bc3 100644 > --- a/arch/arm64/include/asm/acpi.h > +++ b/arch/arm64/include/asm/acpi.h > @@ -13,6 +13,8 @@ > #define _ASM_ACPI_H > > #include <linux/mm.h> > +#include <asm/cputype.h> > +#include <asm/smp_plat.h> > > /* Basic configuration for ACPI */ > #ifdef CONFIG_ACPI > @@ -27,6 +29,9 @@ static inline void __iomem > *acpi_os_ioremap(acpi_physical_address phys, > } > #define acpi_os_ioremap acpi_os_ioremap > > +typedef u64 phys_cpuid_t; > +#define PHYS_CPUID_INVALID INVALID_HWID > +
This should have been defined in the previous patch (though it defaults to -1, so not too bad). Reviewed-by: Catalin Marinas <[email protected]> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
