mirror of https://github.com/xemu-project/xemu.git
s390: Implement load normal reset
kdump on s390 uses a load normal reset to bring the system in a defined state by doing a subsystem reset. The issuing CPUs will have an initial CPU reset, all other CPUs will have a CPU reset as defined in POP (no register content will change). Implement this as architectured. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
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@ -31,6 +31,7 @@
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#if !defined(CONFIG_USER_ONLY)
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#include "exec/softmmu_exec.h"
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#include "sysemu/cpus.h"
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#include "sysemu/sysemu.h"
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#endif
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@ -180,6 +181,32 @@ uint32_t HELPER(servc)(CPUS390XState *env, uint64_t r1, uint64_t r2)
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}
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#ifndef CONFIG_USER_ONLY
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static void cpu_reset_all(void)
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{
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CPUState *cpu;
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S390CPUClass *scc;
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for (cpu = first_cpu; cpu; cpu = cpu->next_cpu) {
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scc = S390_CPU_GET_CLASS(CPU(cpu));
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scc->cpu_reset(CPU(cpu));
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}
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}
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static int load_normal_reset(S390CPU *cpu)
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{
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S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
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pause_all_vcpus();
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cpu_synchronize_all_states();
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cpu_reset_all();
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io_subsystem_reset();
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scc->initial_cpu_reset(CPU(cpu));
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scc->load_normal(CPU(cpu));
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cpu_synchronize_all_post_reset();
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resume_all_vcpus();
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return 0;
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}
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#define DIAG_308_RC_NO_CONF 0x0102
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#define DIAG_308_RC_INVALID 0x0402
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void handle_diag_308(CPUS390XState *env, uint64_t r1, uint64_t r3)
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@ -198,6 +225,9 @@ void handle_diag_308(CPUS390XState *env, uint64_t r1, uint64_t r3)
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}
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switch (subcode) {
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case 1:
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load_normal_reset(s390_env_get_cpu(env));
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break;
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case 5:
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if ((r1 & 1) || (addr & 0x0fffULL)) {
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program_interrupt(env, PGM_SPECIFICATION, ILEN_LATER_INC);
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