b286d5d8b0
Implement the hsave MSR, that gives the VCPU a GPA to save the old guest state in. v2 allows userspace to save/restore hsave v4 dummys out the hsave MSR, so we use a host page v6 remembers the guest's hsave and exports the MSR Acked-by: Joerg Roedel <joro@8bytes.org> Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
49 lines
964 B
C
49 lines
964 B
C
#ifndef __KVM_SVM_H
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#define __KVM_SVM_H
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/list.h>
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#include <linux/kvm_host.h>
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#include <asm/msr.h>
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#include <asm/svm.h>
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static const u32 host_save_user_msrs[] = {
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#ifdef CONFIG_X86_64
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MSR_STAR, MSR_LSTAR, MSR_CSTAR, MSR_SYSCALL_MASK, MSR_KERNEL_GS_BASE,
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MSR_FS_BASE,
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#endif
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MSR_IA32_SYSENTER_CS, MSR_IA32_SYSENTER_ESP, MSR_IA32_SYSENTER_EIP,
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};
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#define NR_HOST_SAVE_USER_MSRS ARRAY_SIZE(host_save_user_msrs)
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#define NUM_DB_REGS 4
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struct kvm_vcpu;
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struct vcpu_svm {
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struct kvm_vcpu vcpu;
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struct vmcb *vmcb;
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unsigned long vmcb_pa;
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struct svm_cpu_data *svm_data;
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uint64_t asid_generation;
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unsigned long db_regs[NUM_DB_REGS];
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u64 next_rip;
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u64 host_user_msrs[NR_HOST_SAVE_USER_MSRS];
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u64 host_gs_base;
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unsigned long host_cr2;
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unsigned long host_db_regs[NUM_DB_REGS];
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unsigned long host_dr6;
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unsigned long host_dr7;
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u32 *msrpm;
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struct vmcb *hsave;
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u64 hsave_msr;
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};
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#endif
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