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![Marcelo Tosatti](/assets/img/avatar_default.png)
Port qemu-kvm's commit 4b62fff1101a7ad77553147717a8bd3bf79df7ef Author: Huang Ying <ying.huang@intel.com> Date: Mon Sep 21 10:43:25 2009 +0800 MCE: Relay UCR MCE to guest UCR (uncorrected recovery) MCE is supported in recent Intel CPUs, where some hardware error such as some memory error can be reported without PCC (processor context corrupted). To recover from such MCE, the corresponding memory will be unmapped, and all processes accessing the memory will be killed via SIGBUS. For KVM, if QEMU/KVM is killed, all guest processes will be killed too. So we relay SIGBUS from host OS to guest system via a UCR MCE injection. Then guest OS can isolate corresponding memory and kill necessary guest processes only. SIGBUS sent to main thread (not VCPU threads) will be broadcast to all VCPU threads as UCR MCE. aliguori: fix build Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
191 lines
5.1 KiB
C
191 lines
5.1 KiB
C
/*
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* QEMU KVM support
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*
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* Copyright IBM, Corp. 2008
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*
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* Authors:
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* Anthony Liguori <aliguori@us.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#ifndef QEMU_KVM_H
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#define QEMU_KVM_H
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#include <errno.h>
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#include "config-host.h"
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#include "qemu-queue.h"
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#ifdef CONFIG_KVM
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#include <linux/kvm.h>
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#endif
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extern int kvm_allowed;
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#if defined CONFIG_KVM || !defined NEED_CPU_H
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#define kvm_enabled() (kvm_allowed)
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#else
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#define kvm_enabled() (0)
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#endif
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struct kvm_run;
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/* external API */
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int kvm_init(int smp_cpus);
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int kvm_has_sync_mmu(void);
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int kvm_has_vcpu_events(void);
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int kvm_has_robust_singlestep(void);
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int kvm_has_debugregs(void);
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int kvm_has_xsave(void);
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int kvm_has_xcrs(void);
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#ifdef NEED_CPU_H
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int kvm_init_vcpu(CPUState *env);
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int kvm_cpu_exec(CPUState *env);
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#if !defined(CONFIG_USER_ONLY)
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int kvm_log_start(target_phys_addr_t phys_addr, ram_addr_t size);
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int kvm_log_stop(target_phys_addr_t phys_addr, ram_addr_t size);
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void kvm_setup_guest_memory(void *start, size_t size);
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int kvm_coalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
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int kvm_uncoalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
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void kvm_flush_coalesced_mmio_buffer(void);
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#endif
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int kvm_insert_breakpoint(CPUState *current_env, target_ulong addr,
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target_ulong len, int type);
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int kvm_remove_breakpoint(CPUState *current_env, target_ulong addr,
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target_ulong len, int type);
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void kvm_remove_all_breakpoints(CPUState *current_env);
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int kvm_update_guest_debug(CPUState *env, unsigned long reinject_trap);
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#ifndef _WIN32
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int kvm_set_signal_mask(CPUState *env, const sigset_t *sigset);
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#endif
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int kvm_pit_in_kernel(void);
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int kvm_irqchip_in_kernel(void);
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/* internal API */
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struct KVMState;
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typedef struct KVMState KVMState;
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int kvm_ioctl(KVMState *s, int type, ...);
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int kvm_vm_ioctl(KVMState *s, int type, ...);
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int kvm_vcpu_ioctl(CPUState *env, int type, ...);
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/* Arch specific hooks */
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int kvm_arch_post_run(CPUState *env, struct kvm_run *run);
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int kvm_arch_handle_exit(CPUState *env, struct kvm_run *run);
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int kvm_arch_pre_run(CPUState *env, struct kvm_run *run);
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int kvm_arch_process_irqchip_events(CPUState *env);
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int kvm_arch_get_registers(CPUState *env);
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/* state subset only touched by the VCPU itself during runtime */
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#define KVM_PUT_RUNTIME_STATE 1
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/* state subset modified during VCPU reset */
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#define KVM_PUT_RESET_STATE 2
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/* full state set, modified during initialization or on vmload */
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#define KVM_PUT_FULL_STATE 3
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int kvm_arch_put_registers(CPUState *env, int level);
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int kvm_arch_init(KVMState *s, int smp_cpus);
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int kvm_arch_init_vcpu(CPUState *env);
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void kvm_arch_reset_vcpu(CPUState *env);
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int kvm_on_sigbus_vcpu(CPUState *env, int code, void *addr);
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int kvm_on_sigbus(int code, void *addr);
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struct kvm_guest_debug;
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struct kvm_debug_exit_arch;
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struct kvm_sw_breakpoint {
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target_ulong pc;
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target_ulong saved_insn;
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int use_count;
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QTAILQ_ENTRY(kvm_sw_breakpoint) entry;
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};
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QTAILQ_HEAD(kvm_sw_breakpoint_head, kvm_sw_breakpoint);
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int kvm_arch_debug(struct kvm_debug_exit_arch *arch_info);
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struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *env,
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target_ulong pc);
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int kvm_sw_breakpoints_active(CPUState *env);
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int kvm_arch_insert_sw_breakpoint(CPUState *current_env,
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struct kvm_sw_breakpoint *bp);
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int kvm_arch_remove_sw_breakpoint(CPUState *current_env,
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struct kvm_sw_breakpoint *bp);
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int kvm_arch_insert_hw_breakpoint(target_ulong addr,
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target_ulong len, int type);
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int kvm_arch_remove_hw_breakpoint(target_ulong addr,
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target_ulong len, int type);
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void kvm_arch_remove_all_hw_breakpoints(void);
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void kvm_arch_update_guest_debug(CPUState *env, struct kvm_guest_debug *dbg);
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bool kvm_arch_stop_on_emulation_error(CPUState *env);
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int kvm_check_extension(KVMState *s, unsigned int extension);
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uint32_t kvm_arch_get_supported_cpuid(CPUState *env, uint32_t function,
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uint32_t index, int reg);
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void kvm_cpu_synchronize_state(CPUState *env);
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void kvm_cpu_synchronize_post_reset(CPUState *env);
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void kvm_cpu_synchronize_post_init(CPUState *env);
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/* generic hooks - to be moved/refactored once there are more users */
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static inline void cpu_synchronize_state(CPUState *env)
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{
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if (kvm_enabled()) {
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kvm_cpu_synchronize_state(env);
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}
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}
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static inline void cpu_synchronize_post_reset(CPUState *env)
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{
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if (kvm_enabled()) {
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kvm_cpu_synchronize_post_reset(env);
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}
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}
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static inline void cpu_synchronize_post_init(CPUState *env)
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{
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if (kvm_enabled()) {
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kvm_cpu_synchronize_post_init(env);
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}
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}
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#if !defined(CONFIG_USER_ONLY)
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int kvm_physical_memory_addr_from_ram(KVMState *s, ram_addr_t ram_addr,
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target_phys_addr_t *phys_addr);
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#endif
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#endif
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int kvm_set_ioeventfd_mmio_long(int fd, uint32_t adr, uint32_t val, bool assign);
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int kvm_set_ioeventfd_pio_word(int fd, uint16_t adr, uint16_t val, bool assign);
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#endif
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