6f0437e8de
Avi Kivity wrote: > Suggest wrapping in a function and hiding it deep inside kvm-all.c. > Done in v2: ----------> If the KVM MMU is asynchronous (kernel does not support MMU_NOTIFIER), we have to avoid COW for the guest memory. Otherwise we risk serious breakage when guest pages change there physical locations due to COW after fork. Seen when forking smbd during runtime via -smb. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
134 lines
3.5 KiB
C
134 lines
3.5 KiB
C
/*
|
|
* QEMU KVM support
|
|
*
|
|
* Copyright IBM, Corp. 2008
|
|
*
|
|
* Authors:
|
|
* Anthony Liguori <aliguori@us.ibm.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2 or later.
|
|
* See the COPYING file in the top-level directory.
|
|
*
|
|
*/
|
|
|
|
#ifndef QEMU_KVM_H
|
|
#define QEMU_KVM_H
|
|
|
|
#include "config.h"
|
|
#include "sys-queue.h"
|
|
|
|
#ifdef CONFIG_KVM
|
|
extern int kvm_allowed;
|
|
|
|
#define kvm_enabled() (kvm_allowed)
|
|
#else
|
|
#define kvm_enabled() (0)
|
|
#endif
|
|
|
|
struct kvm_run;
|
|
|
|
/* external API */
|
|
|
|
int kvm_init(int smp_cpus);
|
|
|
|
int kvm_init_vcpu(CPUState *env);
|
|
int kvm_sync_vcpus(void);
|
|
|
|
int kvm_cpu_exec(CPUState *env);
|
|
|
|
void kvm_set_phys_mem(target_phys_addr_t start_addr,
|
|
ram_addr_t size,
|
|
ram_addr_t phys_offset);
|
|
|
|
void kvm_physical_sync_dirty_bitmap(target_phys_addr_t start_addr,
|
|
target_phys_addr_t end_addr);
|
|
|
|
int kvm_log_start(target_phys_addr_t phys_addr, ram_addr_t size);
|
|
int kvm_log_stop(target_phys_addr_t phys_addr, ram_addr_t size);
|
|
|
|
int kvm_has_sync_mmu(void);
|
|
|
|
void kvm_setup_guest_memory(void *start, size_t size);
|
|
|
|
int kvm_coalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
|
|
int kvm_uncoalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
|
|
|
|
int kvm_insert_breakpoint(CPUState *current_env, target_ulong addr,
|
|
target_ulong len, int type);
|
|
int kvm_remove_breakpoint(CPUState *current_env, target_ulong addr,
|
|
target_ulong len, int type);
|
|
void kvm_remove_all_breakpoints(CPUState *current_env);
|
|
int kvm_update_guest_debug(CPUState *env, unsigned long reinject_trap);
|
|
|
|
/* internal API */
|
|
|
|
struct KVMState;
|
|
typedef struct KVMState KVMState;
|
|
|
|
int kvm_ioctl(KVMState *s, int type, ...);
|
|
|
|
int kvm_vm_ioctl(KVMState *s, int type, ...);
|
|
|
|
int kvm_vcpu_ioctl(CPUState *env, int type, ...);
|
|
|
|
/* Arch specific hooks */
|
|
|
|
int kvm_arch_post_run(CPUState *env, struct kvm_run *run);
|
|
|
|
int kvm_arch_handle_exit(CPUState *env, struct kvm_run *run);
|
|
|
|
int kvm_arch_pre_run(CPUState *env, struct kvm_run *run);
|
|
|
|
int kvm_arch_get_registers(CPUState *env);
|
|
|
|
int kvm_arch_put_registers(CPUState *env);
|
|
|
|
int kvm_arch_init(KVMState *s, int smp_cpus);
|
|
|
|
int kvm_arch_init_vcpu(CPUState *env);
|
|
|
|
struct kvm_guest_debug;
|
|
struct kvm_debug_exit_arch;
|
|
|
|
struct kvm_sw_breakpoint {
|
|
target_ulong pc;
|
|
target_ulong saved_insn;
|
|
int use_count;
|
|
TAILQ_ENTRY(kvm_sw_breakpoint) entry;
|
|
};
|
|
|
|
TAILQ_HEAD(kvm_sw_breakpoint_head, kvm_sw_breakpoint);
|
|
|
|
int kvm_arch_debug(struct kvm_debug_exit_arch *arch_info);
|
|
|
|
struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *env,
|
|
target_ulong pc);
|
|
|
|
int kvm_sw_breakpoints_active(CPUState *env);
|
|
|
|
int kvm_arch_insert_sw_breakpoint(CPUState *current_env,
|
|
struct kvm_sw_breakpoint *bp);
|
|
int kvm_arch_remove_sw_breakpoint(CPUState *current_env,
|
|
struct kvm_sw_breakpoint *bp);
|
|
int kvm_arch_insert_hw_breakpoint(target_ulong addr,
|
|
target_ulong len, int type);
|
|
int kvm_arch_remove_hw_breakpoint(target_ulong addr,
|
|
target_ulong len, int type);
|
|
void kvm_arch_remove_all_hw_breakpoints(void);
|
|
|
|
void kvm_arch_update_guest_debug(CPUState *env, struct kvm_guest_debug *dbg);
|
|
|
|
/* generic hooks - to be moved/refactored once there are more users */
|
|
|
|
static inline void cpu_synchronize_state(CPUState *env, int modified)
|
|
{
|
|
if (kvm_enabled()) {
|
|
if (modified)
|
|
kvm_arch_put_registers(env);
|
|
else
|
|
kvm_arch_get_registers(env);
|
|
}
|
|
}
|
|
|
|
#endif
|