Displaying 2 results from an estimated 2 matches for "eflags_mask".
2012 May 04
9
[hybrid]: unable to boot hvm due to eflags.ID
Hi guys,
At a loss trying to figure why
if (has_eflag(X86_EFLAGS_ID))
returns false in my HVM domU. Standard function has_eflag() in
cpucheck.c running in real mode. Works fine on PV dom0, but fails when
guest is booting on my hybrid dom0.
LMK if any ideas. I''ll keep digging in the manuals, but nothing so far.
thanks,
Mukesh
2007 Aug 08
2
[PATCH] x86-64: syscall/sysenter support for 32-bit apps
.../x86/domain.c 2007-08-08 11:37:08.000000000 +0200
@@ -413,6 +413,12 @@ int vcpu_initialise(struct vcpu *v)
v->arch.perdomain_ptes =
d->arch.mm_perdomain_pt + (v->vcpu_id << GDT_LDT_VCPU_SHIFT);
+#ifdef __x86_64__
+ v->arch.sysexit_cs = 3;
+ v->arch.syscall_eflags_mask = X86_EFLAGS_DF|X86_EFLAGS_TF|X86_EFLAGS_NT|
+ X86_EFLAGS_RF|X86_EFLAGS_VM;
+#endif
+
return (is_pv_32on64_vcpu(v) ? setup_compat_l4(v) : 0);
}
@@ -625,7 +631,18 @@ int arch_set_info_guest(
v->arch.flags |= TF_kernel_mode;
if ( !compat )
+...