search for: vmx_inject_hw_except

...of INT nn (CD nn) instruction, which should use + * X86_EVENTTYPE_SW_INTERRUPT as interrupt type; opcode + * 0xf1 generated #DB should use privileged software + * exception, which is not deliverd here either. + * The caller of this function should set correct instruction + * length. + */ void vmx_inject_hw_exception(int trap, int error_code) { unsigned long intr_info; @@ -1365,7 +1378,6 @@ void vmx_inject_hw_exception(int trap, i switch ( trap ) { case TRAP_debug: - type = X86_EVENTTYPE_SW_EXCEPTION; if ( guest_cpu_user_regs()->eflags & X86_EFLAGS_TF ) {...

...sion in some stable, so I thought I share the backport I did. Jan was suggesting a slightly different coding which should do the same but I wanted to keep my variant because I had done regression testing already and did not unnecessarily change code. Jan's proposal: @@ -1364,7 +1358,6 @@ void vmx_inject_hw_exception(int trap, i switch ( trap ) { case TRAP_debug: - type = X86_EVENTTYPE_SW_EXCEPTION; if ( guest_cpu_user_regs()->eflags & X86_EFLAGS_TF ) { __restore_debug_registers(curr); @@ -1379,9 +1372,11 @@ void vmx_inject_hw_exception(int trap, i...

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),

Hi all, Can Xen hypervisor modify HVM domU's Shadow page table, under the dom0's context, like trapped from dom0's hypercall? I think it have to call 2 functions at least: guest_walk_tables() and flush_tlb_all(). Can these 2 functions called in dom0's context? In my test, if hypervisor tries to modify HVM's shadow page table, it will bring down the whole system. I am not

...ake 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 to exception emulation handler function. And supply a interface for userspace to inject trap. PATCH 1: Pass the instruction length field down to exception emulation, by changing hypercall parameter and adding a parameter in fucntion hvm_inject_excep...

Intercept guest reads of MSR_IA32_MCG_CAP and limit the number of memory banks reported to one. This prevents us from trying to read status of non-existent banks when migrated to a machine with fewer banks. Signed-off-by: Ben Guthro Signed-off-by: David Lively <dlively@virtualiron.com> _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com

...R_IA32_VMX_BASIC...MSR_IA32_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;...