92a5199b29
An SEV-ES guest does not allow register state to be altered once it has been measured. When an SEV-ES guest issues a reboot command, Qemu will reset the vCPU state and resume the guest. This will cause failures under SEV-ES. Prevent that from occuring by introducing an arch-specific callback that returns a boolean indicating whether vCPUs are resettable. Cc: Peter Maydell <peter.maydell@linaro.org> Cc: Aurelien Jarno <aurelien@aurel32.net> Cc: Jiaxun Yang <jiaxun.yang@flygoat.com> Cc: Aleksandar Rikalo <aleksandar.rikalo@syrmia.com> Cc: David Gibson <david@gibson.dropbear.id.au> Cc: David Hildenbrand <david@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Reviewed-by: Venu Busireddy <venu.busireddy@oracle.com> Message-Id: <1ac39c441b9a3e970e9556e1cc29d0a0814de6fd.1611682609.git.thomas.lendacky@amd.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
61 lines
1.5 KiB
C
61 lines
1.5 KiB
C
#ifndef QEMU_CPUS_H
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#define QEMU_CPUS_H
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#include "qemu/timer.h"
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#include "sysemu/accel-ops.h"
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/* register accel-specific operations */
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void cpus_register_accel(const AccelOpsClass *i);
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/* accel/dummy-cpus.c */
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/* Create a dummy vcpu for AccelOpsClass->create_vcpu_thread */
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void dummy_start_vcpu_thread(CPUState *);
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/* interface available for cpus accelerator threads */
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/* For temporary buffers for forming a name */
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#define VCPU_THREAD_NAME_SIZE 16
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void cpus_kick_thread(CPUState *cpu);
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bool cpu_work_list_empty(CPUState *cpu);
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bool cpu_thread_is_idle(CPUState *cpu);
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bool all_cpu_threads_idle(void);
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bool cpu_can_run(CPUState *cpu);
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void qemu_wait_io_event_common(CPUState *cpu);
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void qemu_wait_io_event(CPUState *cpu);
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void cpu_thread_signal_created(CPUState *cpu);
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void cpu_thread_signal_destroyed(CPUState *cpu);
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void cpu_handle_guest_debug(CPUState *cpu);
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/* end interface for cpus accelerator threads */
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bool qemu_in_vcpu_thread(void);
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void qemu_init_cpu_loop(void);
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void resume_all_vcpus(void);
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void pause_all_vcpus(void);
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void cpu_stop_current(void);
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extern int icount_align_option;
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/* Unblock cpu */
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void qemu_cpu_kick_self(void);
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bool cpus_are_resettable(void);
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void cpu_synchronize_all_states(void);
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void cpu_synchronize_all_post_reset(void);
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void cpu_synchronize_all_post_init(void);
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void cpu_synchronize_all_pre_loadvm(void);
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#ifndef CONFIG_USER_ONLY
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/* vl.c */
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/* *-user doesn't have configurable SMP topology */
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extern int smp_cores;
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extern int smp_threads;
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#endif
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void list_cpus(const char *optarg);
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#endif
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