diff options
| author | Jan Kiszka | 2013-03-06 15:44:03 +0100 |
|---|---|---|
| committer | Marcelo Tosatti | 2013-03-07 19:47:11 +0100 |
| commit | 33fb20c39e98b90813b5ab2d9a0d6faa6300caca (patch) | |
| tree | 20402ecdcf02f39fdbd31a793702f29881c2fbbc /arch | |
| parent | KVM: nVMX: Reset RFLAGS on VM-exit (diff) | |
| download | kernel-qcow2-linux-33fb20c39e98b90813b5ab2d9a0d6faa6300caca.tar.gz kernel-qcow2-linux-33fb20c39e98b90813b5ab2d9a0d6faa6300caca.tar.xz kernel-qcow2-linux-33fb20c39e98b90813b5ab2d9a0d6faa6300caca.zip | |
KVM: nVMX: Fix content of MSR_IA32_VMX_ENTRY/EXIT_CTLS
Properly set those bits to 1 that the spec demands in case bit 55 of
VMX_BASIC is 0 - like in our case.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/include/asm/vmx.h | 4 | ||||
| -rw-r--r-- | arch/x86/kvm/vmx.c | 13 |
2 files changed, 14 insertions, 3 deletions
diff --git a/arch/x86/include/asm/vmx.h b/arch/x86/include/asm/vmx.h index b6fbf860e398..5fb6e24f0649 100644 --- a/arch/x86/include/asm/vmx.h +++ b/arch/x86/include/asm/vmx.h @@ -81,6 +81,8 @@ #define VM_EXIT_LOAD_IA32_EFER 0x00200000 #define VM_EXIT_SAVE_VMX_PREEMPTION_TIMER 0x00400000 +#define VM_EXIT_ALWAYSON_WITHOUT_TRUE_MSR 0x00036dff + #define VM_ENTRY_LOAD_DEBUG_CONTROLS 0x00000002 #define VM_ENTRY_IA32E_MODE 0x00000200 #define VM_ENTRY_SMM 0x00000400 @@ -89,6 +91,8 @@ #define VM_ENTRY_LOAD_IA32_PAT 0x00004000 #define VM_ENTRY_LOAD_IA32_EFER 0x00008000 +#define VM_ENTRY_ALWAYSON_WITHOUT_TRUE_MSR 0x000011ff + /* VMCS Encodings */ enum vmcs_field { VIRTUAL_PROCESSOR_ID = 0x00000000, diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index aacf6a458ae1..a9d885353108 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -2049,21 +2049,28 @@ static __init void nested_vmx_setup_ctls_msrs(void) PIN_BASED_EXT_INTR_MASK | PIN_BASED_NMI_EXITING | PIN_BASED_VIRTUAL_NMIS; - /* exit controls */ - nested_vmx_exit_ctls_low = 0; + /* + * Exit controls + * If bit 55 of VMX_BASIC is off, bits 0-8 and 10, 11, 13, 14, 16 and + * 17 must be 1. + */ + nested_vmx_exit_ctls_low = VM_EXIT_ALWAYSON_WITHOUT_TRUE_MSR; /* Note that guest use of VM_EXIT_ACK_INTR_ON_EXIT is not supported. */ #ifdef CONFIG_X86_64 nested_vmx_exit_ctls_high = VM_EXIT_HOST_ADDR_SPACE_SIZE; #else nested_vmx_exit_ctls_high = 0; #endif + nested_vmx_exit_ctls_high |= VM_EXIT_ALWAYSON_WITHOUT_TRUE_MSR; /* entry controls */ rdmsr(MSR_IA32_VMX_ENTRY_CTLS, nested_vmx_entry_ctls_low, nested_vmx_entry_ctls_high); - nested_vmx_entry_ctls_low = 0; + /* If bit 55 of VMX_BASIC is off, bits 0-8 and 12 must be 1. */ + nested_vmx_entry_ctls_low = VM_ENTRY_ALWAYSON_WITHOUT_TRUE_MSR; nested_vmx_entry_ctls_high &= VM_ENTRY_LOAD_IA32_PAT | VM_ENTRY_IA32E_MODE; + nested_vmx_entry_ctls_high |= VM_ENTRY_ALWAYSON_WITHOUT_TRUE_MSR; /* cpu-based controls */ rdmsr(MSR_IA32_VMX_PROCBASED_CTLS, |