7a5235c9e6
Since HAX_VM_IOCTL_ALLOC_RAM takes a 32-bit size, it cannot handle RAM blocks of 4GB or larger, which is why HAXM can only run guests with less than 4GB of RAM. Solve this problem by utilizing the new HAXM API, HAX_VM_IOCTL_ADD_RAMBLOCK, which takes a 64-bit size, to register RAM blocks with the HAXM kernel module. The new API is first added in HAXM 7.0.0, and its availablility and be confirmed by the presence of the HAX_CAP_64BIT_RAMBLOCK capability flag. When the guest RAM size reaches 7GB, QEMU will ask HAXM to set up a memory mapping that covers a 4GB region, which will fail, because HAX_VM_IOCTL_SET_RAM also takes a 32-bit size. Work around this limitation by splitting the large mapping into small ones and calling HAX_VM_IOCTL_SET_RAM multiple times. Bug: https://bugs.launchpad.net/qemu/+bug/1735576 Signed-off-by: Yu Ning <yu.ning@intel.com> Message-Id: <1515752555-12784-1-git-send-email-yu.ning@linux.intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
96 lines
2.4 KiB
C
96 lines
2.4 KiB
C
/*
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* QEMU HAXM support
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*
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* Copyright (c) 2011 Intel Corporation
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* Written by:
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* Jiang Yunhong<yunhong.jiang@intel.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 _HAX_I386_H
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#define _HAX_I386_H
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#include "cpu.h"
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#include "sysemu/hax.h"
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#ifdef CONFIG_DARWIN
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typedef int hax_fd;
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#endif
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#ifdef CONFIG_WIN32
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typedef HANDLE hax_fd;
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#endif
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extern struct hax_state hax_global;
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struct hax_vcpu_state {
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hax_fd fd;
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int vcpu_id;
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struct hax_tunnel *tunnel;
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unsigned char *iobuf;
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};
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struct hax_state {
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hax_fd fd; /* the global hax device interface */
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uint32_t version;
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struct hax_vm *vm;
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uint64_t mem_quota;
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bool supports_64bit_ramblock;
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};
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#define HAX_MAX_VCPU 0x10
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#define MAX_VM_ID 0x40
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#define MAX_VCPU_ID 0x40
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struct hax_vm {
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hax_fd fd;
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int id;
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struct hax_vcpu_state *vcpus[HAX_MAX_VCPU];
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};
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#ifdef NEED_CPU_H
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/* Functions exported to host specific mode */
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hax_fd hax_vcpu_get_fd(CPUArchState *env);
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int valid_hax_tunnel_size(uint16_t size);
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/* Host specific functions */
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int hax_mod_version(struct hax_state *hax, struct hax_module_version *version);
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int hax_inject_interrupt(CPUArchState *env, int vector);
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struct hax_vm *hax_vm_create(struct hax_state *hax);
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int hax_vcpu_run(struct hax_vcpu_state *vcpu);
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int hax_vcpu_create(int id);
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int hax_sync_vcpu_state(CPUArchState *env, struct vcpu_state_t *state,
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int set);
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int hax_sync_msr(CPUArchState *env, struct hax_msr_data *msrs, int set);
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int hax_sync_fpu(CPUArchState *env, struct fx_layout *fl, int set);
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#endif
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int hax_vm_destroy(struct hax_vm *vm);
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int hax_capability(struct hax_state *hax, struct hax_capabilityinfo *cap);
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int hax_notify_qemu_version(hax_fd vm_fd, struct hax_qemu_version *qversion);
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int hax_set_ram(uint64_t start_pa, uint32_t size, uint64_t host_va, int flags);
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/* Common host function */
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int hax_host_create_vm(struct hax_state *hax, int *vm_id);
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hax_fd hax_host_open_vm(struct hax_state *hax, int vm_id);
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int hax_host_create_vcpu(hax_fd vm_fd, int vcpuid);
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hax_fd hax_host_open_vcpu(int vmid, int vcpuid);
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int hax_host_setup_vcpu_channel(struct hax_vcpu_state *vcpu);
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hax_fd hax_mod_open(void);
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void hax_memory_init(void);
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#ifdef CONFIG_DARWIN
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#include "target/i386/hax-darwin.h"
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#endif
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#ifdef CONFIG_WIN32
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#include "target/i386/hax-windows.h"
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#endif
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#include "target/i386/hax-interface.h"
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#endif
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