Displaying 4 results from an estimated 4 matches for "domain_cpuid".
2008 May 13
3
Xen HVM cpuid problem
Hi Keir,
For HVM guests, all cpuid Fn''s going through domain_cpuid()
iterate over the loop and then return 0 for all four registers.
Guests OS''s and cpuid tools in HVM which query for
cpuid Fn 0000.0000 %eax and 8000.0000 %eax, see the value 0 and think,
Xen emulates oldish 386/486 CPUs.
This leads to strange boot failures, "your CPU does not suppo...
2008 Nov 19
0
[PATCH] support CPUID hypervisor feature bit
...vell.com>
Index: 2008-10-27/xen/arch/x86/domain.c
===================================================================
--- 2008-10-27.orig/xen/arch/x86/domain.c 2008-11-11 16:24:48.000000000 +0100
+++ 2008-10-27/xen/arch/x86/domain.c 2008-11-19 10:22:34.000000000 +0100
@@ -1888,6 +1888,8 @@ void domain_cpuid(
cpuid_input_t *cpuid;
int i;
+ *eax = *ebx = *ecx = *edx = 0;
+
for ( i = 0; i < MAX_CPUID_INPUT; i++ )
{
cpuid = &d->arch.cpuids[i];
@@ -1900,11 +1902,12 @@ void domain_cpuid(
*ebx = cpuid->ebx;
*ecx = cpuid->ecx;...
2013 Sep 23
11
[PATCH v4 0/4] x86/HVM: miscellaneous improvements
The first and third patches are cleaned up versions of an earlier v3
submission by Yang.
1: Nested VMX: check VMX capability before read VMX related MSRs
2: VMX: clean up capability checks
3: Nested VMX: fix IA32_VMX_CR4_FIXED1 msr emulation
4: x86: make hvm_cpuid() tolerate NULL pointers
Signed-off-by: Jan Beulich <jbeulich@suse.com>
2013 Oct 10
10
[PATCH 0/4] x86: XSA-67 follow-up
1: correct LDT checks
2: add address validity check to guest_map_l1e()
3: use {rd,wr}{fs,gs}base when available
4: check for canonical address before doing page walks
Signed-off-by: Jan Beulich <jbeulich@suse.com>