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| author | Yang Zhang <yang.z.zhang@Intel.com> | 2013-09-30 13:58:48 +0200 |
|---|---|---|
| committer | Jan Beulich <jbeulich@suse.com> | 2013-09-30 13:58:48 +0200 |
| commit | eb68feea83c9d299c82ef673dd73aa04265292db (patch) | |
| tree | 24fd92ecb118fb00da903e0bf273351c8ae82c55 | |
| parent | 1eb47fdc02a9ed1317210d319c1bd4ffc614006a (diff) | |
| download | xen-eb68feea83c9d299c82ef673dd73aa04265292db.tar.gz xen-eb68feea83c9d299c82ef673dd73aa04265292db.tar.bz2 xen-eb68feea83c9d299c82ef673dd73aa04265292db.zip | |
Nested VMX: Expose unrestricted guest feature to guest
With virtual unrestricted guest feature, L2 guest is allowed to run
with PG cleared. Also, allow PAE not set during virtual vmexit emulation.
Signed-off-by: Yang Zhang <yang.z.zhang@Intel.com>
Acked-by: Eddie.Dong@intel.com
| -rw-r--r-- | xen/arch/x86/hvm/hvm.c | 3 | ||||
| -rw-r--r-- | xen/arch/x86/hvm/vmx/vvmx.c | 3 |
2 files changed, 5 insertions, 1 deletions
diff --git a/xen/arch/x86/hvm/hvm.c b/xen/arch/x86/hvm/hvm.c index e0e0f5ddb5..150b0ec460 100644 --- a/xen/arch/x86/hvm/hvm.c +++ b/xen/arch/x86/hvm/hvm.c @@ -1732,7 +1732,8 @@ int hvm_set_cr0(unsigned long value) { if ( v->arch.hvm_vcpu.guest_efer & EFER_LME ) { - if ( !(v->arch.hvm_vcpu.guest_cr[4] & X86_CR4_PAE) ) + if ( !(v->arch.hvm_vcpu.guest_cr[4] & X86_CR4_PAE) && + !nestedhvm_vmswitch_in_progress(v) ) { HVM_DBG_LOG(DBG_LEVEL_1, "Enable paging before PAE enable"); goto gpf; diff --git a/xen/arch/x86/hvm/vmx/vvmx.c b/xen/arch/x86/hvm/vmx/vvmx.c index ba617fa9d2..d476f03dcd 100644 --- a/xen/arch/x86/hvm/vmx/vvmx.c +++ b/xen/arch/x86/hvm/vmx/vvmx.c @@ -1342,6 +1342,7 @@ static void virtual_vmexit(struct cpu_user_regs *regs) nestedhvm_vcpu_exit_guestmode(v); nvcpu->nv_vmexit_pending = 0; + nvcpu->nv_vmswitch_in_progress = 1; lm_l2 = !!hvm_long_mode_enabled(v); lm_l1 = !!(__get_vvmcs(nvcpu->nv_vvmcx, VM_EXIT_CONTROLS) & @@ -1372,6 +1373,7 @@ static void virtual_vmexit(struct cpu_user_regs *regs) if ( cpu_has_vmx_virtual_intr_delivery ) nvmx_update_apicv(v); + nvcpu->nv_vmswitch_in_progress = 0; vmreturn(regs, VMSUCCEED); } @@ -1877,6 +1879,7 @@ int nvmx_msr_read_intercept(unsigned int msr, u64 *msr_content) data = SECONDARY_EXEC_DESCRIPTOR_TABLE_EXITING | SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES | SECONDARY_EXEC_ENABLE_VPID | + SECONDARY_EXEC_UNRESTRICTED_GUEST | SECONDARY_EXEC_ENABLE_EPT; data = gen_vmx_msr(data, 0, host_data); break; |