mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-27 18:37:53 +07:00
d60a540ac5
Pull s390 updates from Heiko Carstens:
"Since Martin is on vacation you get the s390 pull request for the
v4.15 merge window this time from me.
Besides a lot of cleanups and bug fixes these are the most important
changes:
- a new regset for runtime instrumentation registers
- hardware accelerated AES-GCM support for the aes_s390 module
- support for the new CEX6S crypto cards
- support for FORTIFY_SOURCE
- addition of missing z13 and new z14 instructions to the in-kernel
disassembler
- generate opcode tables for the in-kernel disassembler out of a
simple text file instead of having to manually maintain those
tables
- fast memset16, memset32 and memset64 implementations
- removal of named saved segment support
- hardware counter support for z14
- queued spinlocks and queued rwlocks implementations for s390
- use the stack_depth tracking feature for s390 BPF JIT
- a new s390_sthyi system call which emulates the sthyi (store
hypervisor information) instruction
- removal of the old KVM virtio transport
- an s390 specific CPU alternatives implementation which is used in
the new spinlock code"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (88 commits)
MAINTAINERS: add virtio-ccw.h to virtio/s390 section
s390/noexec: execute kexec datamover without DAT
s390: fix transactional execution control register handling
s390/bpf: take advantage of stack_depth tracking
s390: simplify transactional execution elf hwcap handling
s390/zcrypt: Rework struct ap_qact_ap_info.
s390/virtio: remove unused header file kvm_virtio.h
s390: avoid undefined behaviour
s390/disassembler: generate opcode tables from text file
s390/disassembler: remove insn_to_mnemonic()
s390/dasd: avoid calling do_gettimeofday()
s390: vfio-ccw: Do not attempt to free no-op, test and tic cda.
s390: remove named saved segment support
s390/archrandom: Reconsider s390 arch random implementation
s390/pci: do not require AIS facility
s390/qdio: sanitize put_indicator
s390/qdio: use atomic_cmpxchg
s390/nmi: avoid using long-displacement facility
s390: pass endianness info to sparse
s390/decompressor: remove informational messages
...
97 lines
2.4 KiB
C
97 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright IBM Corp. 1999, 2012
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* Author(s): Denis Joseph Barrow,
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* Martin Schwidefsky <schwidefsky@de.ibm.com>,
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* Heiko Carstens <heiko.carstens@de.ibm.com>,
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*/
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#ifndef __ASM_SMP_H
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#define __ASM_SMP_H
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#include <asm/sigp.h>
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#ifdef CONFIG_SMP
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#include <asm/lowcore.h>
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#define raw_smp_processor_id() (S390_lowcore.cpu_nr)
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extern struct mutex smp_cpu_state_mutex;
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extern unsigned int smp_cpu_mt_shift;
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extern unsigned int smp_cpu_mtid;
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extern __vector128 __initdata boot_cpu_vector_save_area[__NUM_VXRS];
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extern int __cpu_up(unsigned int cpu, struct task_struct *tidle);
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extern void arch_send_call_function_single_ipi(int cpu);
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extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);
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extern void smp_call_online_cpu(void (*func)(void *), void *);
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extern void smp_call_ipl_cpu(void (*func)(void *), void *);
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extern void smp_emergency_stop(void);
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extern int smp_find_processor_id(u16 address);
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extern int smp_store_status(int cpu);
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extern void smp_save_dump_cpus(void);
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extern int smp_vcpu_scheduled(int cpu);
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extern void smp_yield_cpu(int cpu);
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extern void smp_cpu_set_polarization(int cpu, int val);
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extern int smp_cpu_get_polarization(int cpu);
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extern void smp_fill_possible_mask(void);
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extern void smp_detect_cpus(void);
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#else /* CONFIG_SMP */
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#define smp_cpu_mtid 0
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static inline void smp_call_ipl_cpu(void (*func)(void *), void *data)
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{
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func(data);
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}
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static inline void smp_call_online_cpu(void (*func)(void *), void *data)
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{
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func(data);
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}
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static inline void smp_emergency_stop(void)
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{
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}
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static inline int smp_find_processor_id(u16 address) { return 0; }
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static inline int smp_store_status(int cpu) { return 0; }
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static inline int smp_vcpu_scheduled(int cpu) { return 1; }
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static inline void smp_yield_cpu(int cpu) { }
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static inline void smp_fill_possible_mask(void) { }
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static inline void smp_detect_cpus(void) { }
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#endif /* CONFIG_SMP */
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static inline void smp_stop_cpu(void)
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{
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u16 pcpu = stap();
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for (;;) {
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__pcpu_sigp(pcpu, SIGP_STOP, 0, NULL);
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cpu_relax();
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}
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}
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/* Return thread 0 CPU number as base CPU */
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static inline int smp_get_base_cpu(int cpu)
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{
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return cpu - (cpu % (smp_cpu_mtid + 1));
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}
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#ifdef CONFIG_HOTPLUG_CPU
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extern int smp_rescan_cpus(void);
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extern void __noreturn cpu_die(void);
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extern void __cpu_die(unsigned int cpu);
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extern int __cpu_disable(void);
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#else
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static inline int smp_rescan_cpus(void) { return 0; }
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static inline void cpu_die(void) { }
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#endif
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#endif /* __ASM_SMP_H */
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