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| author | Jan Dakinevich <jan.dakinevich@gmail.com> | 2018-02-23 13:42:18 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-02-25 13:05:56 +0300 |
| commit | 04c776eecc6ddf37166cd30f4e9c50d19480b18f (patch) | |
| tree | 9a4ac525d5f36590e0c4aa553b98f064611a0fc4 /arch/x86 | |
| parent | f157269c0607effa13c1478be96f1ebebad2a714 (diff) | |
| download | linux-04c776eecc6ddf37166cd30f4e9c50d19480b18f.tar.xz | |
KVM: nVMX: invvpid handling improvements
commit bcdde302b8268ef7dbc4ddbdaffb5b44eafe9a1e upstream
- Expose all invalidation types to the L1
- Reject invvpid instruction, if L1 passed zero vpid value to single
context invalidations
Signed-off-by: Jan Dakinevich <jan.dakinevich@gmail.com>
Tested-by: Ladi Prosek <lprosek@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
[jwang: port to 4.4]
Signed-off-by: Jack Wang <jinpu.wang@profitbricks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kvm/vmx.c | 36 |
1 files changed, 24 insertions, 12 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 1e16821c1378..c51aaac953b4 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -142,6 +142,12 @@ module_param_named(preemption_timer, enable_preemption_timer, bool, S_IRUGO); #define VMX_MISC_EMULATED_PREEMPTION_TIMER_RATE 5 +#define VMX_VPID_EXTENT_SUPPORTED_MASK \ + (VMX_VPID_EXTENT_INDIVIDUAL_ADDR_BIT | \ + VMX_VPID_EXTENT_SINGLE_CONTEXT_BIT | \ + VMX_VPID_EXTENT_GLOBAL_CONTEXT_BIT | \ + VMX_VPID_EXTENT_SINGLE_NON_GLOBAL_BIT) + /* * These 2 parameters are used to config the controls for Pause-Loop Exiting: * ple_gap: upper bound on the amount of time between two successive @@ -2839,8 +2845,7 @@ static void nested_vmx_setup_ctls_msrs(struct vcpu_vmx *vmx) */ if (enable_vpid) vmx->nested.nested_vmx_vpid_caps = VMX_VPID_INVVPID_BIT | - VMX_VPID_EXTENT_SINGLE_CONTEXT_BIT | - VMX_VPID_EXTENT_GLOBAL_CONTEXT_BIT; + VMX_VPID_EXTENT_SUPPORTED_MASK; else vmx->nested.nested_vmx_vpid_caps = 0; @@ -7685,7 +7690,8 @@ static int handle_invvpid(struct kvm_vcpu *vcpu) vmx_instruction_info = vmcs_read32(VMX_INSTRUCTION_INFO); type = kvm_register_readl(vcpu, (vmx_instruction_info >> 28) & 0xf); - types = (vmx->nested.nested_vmx_vpid_caps >> 8) & 0x7; + types = (vmx->nested.nested_vmx_vpid_caps & + VMX_VPID_EXTENT_SUPPORTED_MASK) >> 8; if (type >= 32 || !(types & (1 << type))) { nested_vmx_failValid(vcpu, @@ -7707,21 +7713,27 @@ static int handle_invvpid(struct kvm_vcpu *vcpu) } switch (type) { + case VMX_VPID_EXTENT_INDIVIDUAL_ADDR: case VMX_VPID_EXTENT_SINGLE_CONTEXT: - /* - * Old versions of KVM use the single-context version so we - * have to support it; just treat it the same as all-context. - */ + case VMX_VPID_EXTENT_SINGLE_NON_GLOBAL: + if (!vpid) { + nested_vmx_failValid(vcpu, + VMXERR_INVALID_OPERAND_TO_INVEPT_INVVPID); + skip_emulated_instruction(vcpu); + return 1; + } + break; case VMX_VPID_EXTENT_ALL_CONTEXT: - __vmx_flush_tlb(vcpu, to_vmx(vcpu)->nested.vpid02); - nested_vmx_succeed(vcpu); break; default: - /* Trap individual address invalidation invvpid calls */ - BUG_ON(1); - break; + WARN_ON_ONCE(1); + skip_emulated_instruction(vcpu); + return 1; } + __vmx_flush_tlb(vcpu, vmx->nested.vpid02); + nested_vmx_succeed(vcpu); + skip_emulated_instruction(vcpu); return 1; } |