diff options
| author | Avi Kivity <avi@qumranet.com> | 2007-10-22 14:50:39 (GMT) |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2008-01-30 16:01:20 (GMT) |
| commit | b209749f528488c4c0d20a42c0fbcbf49e6933b3 (patch) | |
| tree | 0e0a24225a5c6bca1c1986cc0daaf8753424cfe6 /include | |
| parent | 565f1fbd9d2f766dcfed5db90b89ef80afe8b49a (diff) | |
| download | linux-b209749f528488c4c0d20a42c0fbcbf49e6933b3.tar.xz | |
KVM: local APIC TPR access reporting facility
Add a facility to report on accesses to the local apic tpr even if the
local apic is emulated in the kernel. This is basically a hack that
allows userspace to patch Windows which tends to bang on the tpr a lot.
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-x86/kvm_host.h | 1 | ||||
| -rw-r--r-- | include/linux/kvm.h | 17 | ||||
| -rw-r--r-- | include/linux/kvm_host.h | 2 |
3 files changed, 19 insertions, 1 deletions
diff --git a/include/asm-x86/kvm_host.h b/include/asm-x86/kvm_host.h index ced1beb..6e649af 100644 --- a/include/asm-x86/kvm_host.h +++ b/include/asm-x86/kvm_host.h @@ -211,6 +211,7 @@ struct kvm_vcpu_arch { int mp_state; int sipi_vector; u64 ia32_misc_enable_msr; + bool tpr_access_reporting; struct kvm_mmu mmu; diff --git a/include/linux/kvm.h b/include/linux/kvm.h index de9f28d..850f5ef 100644 --- a/include/linux/kvm.h +++ b/include/linux/kvm.h @@ -72,6 +72,7 @@ struct kvm_irqchip { #define KVM_EXIT_FAIL_ENTRY 9 #define KVM_EXIT_INTR 10 #define KVM_EXIT_SET_TPR 11 +#define KVM_EXIT_TPR_ACCESS 12 /* for KVM_RUN, returned by mmap(vcpu_fd, offset=0) */ struct kvm_run { @@ -130,6 +131,12 @@ struct kvm_run { __u32 longmode; __u32 pad; } hypercall; + /* KVM_EXIT_TPR_ACCESS */ + struct { + __u64 rip; + __u32 is_write; + __u32 pad; + } tpr_access; /* Fix the size of the union. */ char padding[256]; }; @@ -202,6 +209,13 @@ struct kvm_signal_mask { __u8 sigset[0]; }; +/* for KVM_TPR_ACCESS_REPORTING */ +struct kvm_tpr_access_ctl { + __u32 enabled; + __u32 flags; + __u32 reserved[8]; +}; + #define KVMIO 0xAE /* @@ -229,6 +243,7 @@ struct kvm_signal_mask { #define KVM_CAP_USER_MEMORY 3 #define KVM_CAP_SET_TSS_ADDR 4 #define KVM_CAP_EXT_CPUID 5 +#define KVM_CAP_VAPIC 6 /* * ioctls for VM fds @@ -274,5 +289,7 @@ struct kvm_signal_mask { #define KVM_SET_LAPIC _IOW(KVMIO, 0x8f, struct kvm_lapic_state) #define KVM_SET_CPUID2 _IOW(KVMIO, 0x90, struct kvm_cpuid2) #define KVM_GET_CPUID2 _IOWR(KVMIO, 0x91, struct kvm_cpuid2) +/* Available with KVM_CAP_VAPIC */ +#define KVM_TPR_ACCESS_REPORTING _IOWR(KVMIO, 0x92, struct kvm_tpr_access_ctl) #endif diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 953b50a..9ff5904 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -35,7 +35,7 @@ * vcpu->requests bit members */ #define KVM_REQ_TLB_FLUSH 0 - +#define KVM_REQ_REPORT_TPR_ACCESS 2 struct kvm_vcpu; extern struct kmem_cache *kvm_vcpu_cache; |