arch.s390x.cpu.lowcore Module Reference

Data Structures
struct	arch::s390x::cpu::lowcore::ap_init_params
	Parameters for AP lowcore setup. More...

Enumerations
enum class	architectural_mode : u8 { esa390 = 0 , zarch = 1 }

Typedefs
using	arch::s390x::cpu::lowcore::restart_fn = auto(*)(void*) noexcept -> void
using	arch::s390x::cpu::lowcore::zlowcore
	z/Architecture "Assigned Storage Locations"

Functions
auto	arch::s390x::cpu::lowcore::current_domain_ptr () noexcept -> void *
	Get the current domain pointer from lowcore.
auto	arch::s390x::cpu::lowcore::current_strand_ptr () noexcept -> void *
	Get the current strand pointer from percpu.
auto	arch::s390x::cpu::lowcore::get_current () noexcept -> zlowcore *
auto	arch::s390x::cpu::lowcore::get_current_phys () noexcept -> zlowcore *
auto	arch::s390x::cpu::lowcore::get_for_cpu (const u16 cpu_id) noexcept -> zlowcore *
	Retrieve the lowcore structure pointer for a specific CPU, taking prefixing into account.
auto	arch::s390x::cpu::lowcore::init_ap (zlowcore &lc, const ap_init_params &p) noexcept -> void
	Prepare an AP lowcore for SIGP RESTART.
auto	arch::s390x::cpu::lowcore::init_bsp (const init::zxfl::protocol &proto) noexcept -> void
	Initialize the BSP lowcore. Must be called once after HHDM is active.
auto	arch::s390x::cpu::lowcore::register_cpu_lowcore (const u16 cpu_id, const u64 phys_lc) noexcept -> void
auto	arch::s390x::cpu::lowcore::register_restart_handler (void(*fn)(void *) noexcept, void *data) noexcept -> void
	Install a runtime restart-interrupt handler on the current CPU.

Variables
u64	ap_cr0 {}
	CR0 snapshot to restore on AP.
u64	ap_entry_phys {}
	Physical address of ap_entry (DAT-off restart target).
u64	ap_stack_phys {}
	Physical top of AP's initial stack (for LC_RESTART_STACK).
u16	cpu_addr {}
	Hardware CPU address (from SIGP/STAP).
u16	cpu_id {}
	Logical CPU ID assigned to this AP.
u64	kernel_asce {}
	Kernel ASCE (CR1) to load before enabling DAT.
constexpr u64	arch::s390x::cpu::lowcore::LC_ALIGN = 8192UL
constexpr u64	arch::s390x::cpu::lowcore::LC_AP_CR0 = 0x0330UL
constexpr u64	arch::s390x::cpu::lowcore::LC_AP_CR13 = 0x0338UL
constexpr u64	arch::s390x::cpu::lowcore::LC_ASYNC_STACK = 0x0350UL
constexpr u64	arch::s390x::cpu::lowcore::LC_CPU_ID_OFFSET = 0x03a0UL
constexpr u64	arch::s390x::cpu::lowcore::LC_CURRENT_DOMAIN = 0x0340UL
constexpr u64	arch::s390x::cpu::lowcore::LC_EXT_OLD_PSW = 0x0130UL
constexpr u64	arch::s390x::cpu::lowcore::LC_IO_OLD_PSW = 0x0170UL
constexpr u64	arch::s390x::cpu::lowcore::LC_KERNEL_ASCE = 0x0388UL
constexpr u64	arch::s390x::cpu::lowcore::LC_KERNEL_STACK = 0x0348UL
constexpr u64	arch::s390x::cpu::lowcore::LC_MCCK_OLD_PSW = 0x0160UL
constexpr u64	arch::s390x::cpu::lowcore::LC_MCCK_STACK = 0x0368UL
constexpr u64	arch::s390x::cpu::lowcore::LC_NODAT_STACK = 0x0358UL
constexpr u64	arch::s390x::cpu::lowcore::LC_PERCPU_PTR = 0x0400UL
constexpr u64	arch::s390x::cpu::lowcore::LC_PGM_OLD_PSW = 0x0150UL
constexpr u64	arch::s390x::cpu::lowcore::LC_PSW_TEMP = 0x0248UL
constexpr u64	arch::s390x::cpu::lowcore::LC_RESTART_STACK = 0x0360UL
constexpr u64	arch::s390x::cpu::lowcore::LC_RETURN_PSW = 0x0290UL
constexpr u64	arch::s390x::cpu::lowcore::LC_SIZE = 8192UL
constexpr u64	arch::s390x::cpu::lowcore::LC_SVC_OLD_PSW = 0x0140UL
u64	phys_lc {}
	Physical address of the AP's 8 KB lowcore page.

Files
file	arch/s390x/cpu/lowcore.zcomponent/lowcore.cxxm
file	arch/s390x/cpu/lowcore.zcomponent/lowcore.cxx