diff options
| author | Liu, Jinsong <jinsong.liu@intel.com> | 2014-02-24 10:58:09 +0000 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2014-02-25 20:17:12 +0100 |
| commit | 390bd528ae1c14d0b7f5db8225984f98617b3357 (patch) | |
| tree | 90a06cecd26afb5853e5f9fbe2a61969256f4112 /arch/x86/kvm | |
| parent | 0dd376e709975779cf43f368498c5c0eec843b02 (diff) | |
| download | op-kernel-dev-390bd528ae1c14d0b7f5db8225984f98617b3357.zip op-kernel-dev-390bd528ae1c14d0b7f5db8225984f98617b3357.tar.gz | |
KVM: x86: Enable Intel MPX for guest
From 44c2abca2c2eadc6f2f752b66de4acc8131880c4 Mon Sep 17 00:00:00 2001
From: Liu Jinsong <jinsong.liu@intel.com>
Date: Mon, 24 Feb 2014 18:12:31 +0800
Subject: [PATCH v5 3/3] KVM: x86: Enable Intel MPX for guest
This patch enable Intel MPX feature to guest.
Signed-off-by: Xudong Hao <xudong.hao@intel.com>
Signed-off-by: Liu Jinsong <jinsong.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm')
| -rw-r--r-- | arch/x86/kvm/cpuid.c | 4 | ||||
| -rw-r--r-- | arch/x86/kvm/x86.c | 3 | ||||
| -rw-r--r-- | arch/x86/kvm/x86.h | 3 |
3 files changed, 8 insertions, 2 deletions
diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index b241325..ddc8a7e 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -256,6 +256,8 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function, #endif unsigned f_rdtscp = kvm_x86_ops->rdtscp_supported() ? F(RDTSCP) : 0; unsigned f_invpcid = kvm_x86_ops->invpcid_supported() ? F(INVPCID) : 0; + unsigned f_mpx = kvm_x86_ops->mpx_supported ? + (kvm_x86_ops->mpx_supported() ? F(MPX) : 0) : 0; /* cpuid 1.edx */ const u32 kvm_supported_word0_x86_features = @@ -303,7 +305,7 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function, /* cpuid 7.0.ebx */ const u32 kvm_supported_word9_x86_features = F(FSGSBASE) | F(BMI1) | F(HLE) | F(AVX2) | F(SMEP) | - F(BMI2) | F(ERMS) | f_invpcid | F(RTM) | F(RDSEED) | + F(BMI2) | F(ERMS) | f_invpcid | F(RTM) | f_mpx | F(RDSEED) | F(ADX); /* all calls to cpuid_count() should be made on the same cpu */ diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 33fa9e3..65300191 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -616,6 +616,9 @@ int __kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr) if (xcr0 & ~valid_bits) return 1; + if ((!(xcr0 & XSTATE_BNDREGS)) != (!(xcr0 & XSTATE_BNDCSR))) + return 1; + kvm_put_guest_xcr0(vcpu); vcpu->arch.xcr0 = xcr0; diff --git a/arch/x86/kvm/x86.h b/arch/x86/kvm/x86.h index 8da5823..392ecbf 100644 --- a/arch/x86/kvm/x86.h +++ b/arch/x86/kvm/x86.h @@ -122,7 +122,8 @@ int kvm_write_guest_virt_system(struct x86_emulate_ctxt *ctxt, gva_t addr, void *val, unsigned int bytes, struct x86_exception *exception); -#define KVM_SUPPORTED_XCR0 (XSTATE_FP | XSTATE_SSE | XSTATE_YMM) +#define KVM_SUPPORTED_XCR0 (XSTATE_FP | XSTATE_SSE | XSTATE_YMM \ + | XSTATE_BNDREGS | XSTATE_BNDCSR) extern u64 host_xcr0; extern unsigned int min_timer_period_us; |
