diff options
| author | Joerg Roedel <joerg.roedel@amd.com> | 2010-11-29 17:51:47 +0100 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2011-01-12 10:30:04 +0100 |
| commit | ec9e60b21977007e3dfacc2b8fe3a8fbb9276b51 (patch) | |
| tree | 419f1a51980fb3cd93ab857d0c47457795fa90ef /arch | |
| parent | KVM: Pull extra page fault information into struct x86_exception (diff) | |
| download | linux-ec9e60b21977007e3dfacc2b8fe3a8fbb9276b51.tar.xz linux-ec9e60b21977007e3dfacc2b8fe3a8fbb9276b51.zip | |
KVM: X86: Introduce generic guest-mode representation
This patch introduces a generic representation of guest-mode
fpr a vcpu. This currently only exists in the SVM code.
Having this representation generic will help making the
non-svm code aware of nesting when this is necessary.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 1 | ||||
| -rw-r--r-- | arch/x86/kvm/kvm_cache_regs.h | 15 |
2 files changed, 16 insertions, 0 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 0c0941db31c4..56e45a2ed2de 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -779,6 +779,7 @@ enum { #define HF_VINTR_MASK (1 << 2) #define HF_NMI_MASK (1 << 3) #define HF_IRET_MASK (1 << 4) +#define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */ /* * Hardware virtualization extension instructions may fault if a diff --git a/arch/x86/kvm/kvm_cache_regs.h b/arch/x86/kvm/kvm_cache_regs.h index 975bb45329a1..95ac3afa6e6f 100644 --- a/arch/x86/kvm/kvm_cache_regs.h +++ b/arch/x86/kvm/kvm_cache_regs.h @@ -84,4 +84,19 @@ static inline u64 kvm_read_edx_eax(struct kvm_vcpu *vcpu) | ((u64)(kvm_register_read(vcpu, VCPU_REGS_RDX) & -1u) << 32); } +static inline void enter_guest_mode(struct kvm_vcpu *vcpu) +{ + vcpu->arch.hflags |= HF_GUEST_MASK; +} + +static inline void leave_guest_mode(struct kvm_vcpu *vcpu) +{ + vcpu->arch.hflags &= ~HF_GUEST_MASK; +} + +static inline bool is_guest_mode(struct kvm_vcpu *vcpu) +{ + return vcpu->arch.hflags & HF_GUEST_MASK; +} + #endif |