search for: trap_machine_check

...st_and_set_bool(d->vcpu[0]->mce_pending) ) + /* inject vMCE to all vcpus */ + for_each_vcpu(d, v) { - if ( d->is_hvm ) + if ( !test_and_set_bool(v->mce_pending) && + ((d->is_hvm) || + guest_has_trap_callback(d, v->vcpu_id, TRAP_machine_check)) ) { - mce_printk(MCE_VERBOSE, "MCE: inject vMCE to HVM DOM %d\n", - d->domain_id); - vcpu_kick(d->vcpu[0]); + mce_printk(MCE_VERBOSE, "MCE: inject vMCE to dom%d vcpu%d\n", + d->domai...

...rly explain the problem diff -r 2489c2926698 -r d7ea938044ac xen/arch/x86/hvm/vmx/vmx.c --- a/xen/arch/x86/hvm/vmx/vmx.c +++ b/xen/arch/x86/hvm/vmx/vmx.c @@ -2269,6 +2269,14 @@ void vmx_vmexit_handler(struct cpu_user_ vector = intr_info & INTR_INFO_VECTOR_MASK; if ( vector == TRAP_machine_check ) do_machine_check(regs); + else if ( vector == TRAP_nmi && + ( (intr_info & INTR_INFO_INTR_TYPE_MASK) == + (X86_EVENTTYPE_NMI << 8) ) ) + /* Must be called before interrupts are enabled to ensure + * the N...

...er is immue to corrupt exception frames, by virtue of + * being designed never to return. + * + * This update is safe from a security point of view, as this + * pcpu is never going to try to sysret back to a PV vcpu. + */ + set_ist(&idt_tables[cpu][TRAP_machine_check], IST_NONE); + + kexec_crash_save_cpu(); + __stop_this_cpu(); + + this_cpu(crash_save_done) = 1; + atomic_dec(&waiting_for_crash_ipi); + } + + /* Poor mans self_nmi(). __stop_this_cpu() has reverted the LAPIC + * back to its boot state, so we are unable to...

Hi I am using oprofile 0.9.3 on xen cs 16540 on an Intel system. When I look at the top "hot" functions, I see p2m_change_type being one of the top function in xen-syms. This function is only in the svm (AMD) code and should not appear on an Intel system. I see that this function is not being clled at all when I am running my apps as I have put printk in the functions and they do

..._VMX_PROCBASED_CTLS2: goto gp_fault; @@ -1732,11 +1734,15 @@ static int vmx_msr_write_intercept(struc } if ( (rc < 0) || - (vmx_add_guest_msr(v, ecx) < 0) || (vmx_add_host_load_msr(v, ecx) < 0) ) vmx_inject_hw_exception(v, TRAP_machine_check, 0); else - vmx_write_guest_msr(v, ecx, msr_content); + { + __vmwrite(GUEST_IA32_DEBUGCTL, msr_content); +#ifdef __i386__ + __vmwrite(GUEST_IA32_DEBUGCTL_HIGH, msr_content >> 32); +#endif + } break; } ________________...

Changes from v1: - Define new struct hvm_trap to represent information of trap, include instruction length. - Renames hvm_inject_exception to hvm_inject_trap. Then define a couple of wrappers around that function for existing callers, so that their parameter lists actually *shrink*. This series of patches fix the mistake for debug exception(#DB), overflow exception(#OF) and INT3(#BP),

...+ } else if ( (intblk != hvm_intblk_none) || + (__vmread(VM_ENTRY_INTR_INFO) & INTR_INFO_VALID_MASK) ) { enable_intr_window(v, intack); goto out; @@ -253,6 +272,44 @@ void vmx_intr_assist(void) { hvm_inject_hw_exception(TRAP_machine_check, HVM_DELIVER_NO_ERROR_CODE); } + else if ( cpu_has_vmx_virtual_intr_delivery && + intack.source != hvm_intsrc_pic && + intack.source != hvm_intsrc_vector ) + { + unsigned long status = __vmread(GUEST_INTR_STATUS); + + /* + * S...

This series of patches fix the mistake for debug exception(#DB), overflow exception(#OF) and INT3(#BP), INTn instruction emulation. Introduce new function vmx_inject_sw_exception() which deliver the software excetion, software interrupt and privileged software exception. Split hardware exception as a seperate function(old function vmx_inject_hw_exception()). Also Passed down intruction length

This patch series is a reworking of a series developed by Mukesh Rathor at Oracle. The entirety of the design and development was done by him; I have only reworked, reorganized, and simplified things in a way that I think makes more sense. The vast majority of the credit for this effort therefore goes to him. This version is labelled v13 because it is based on his most recent series, v11.