Displaying 10 results from an estimated 10 matches for "hvm_cpuid".
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 Aug 23
2
[PATCH] Nested VMX: Allow to set CR4.OSXSAVE if guest has xsave feature
...nestedhvm_enabled(v->domain) )
@@ -1925,8 +1926,13 @@ int nvmx_msr_read_intercept(unsigned int msr, u64 *msr_content)
data = X86_CR4_VMXE;
break;
case MSR_IA32_VMX_CR4_FIXED1:
+ data = 0x267ff;
+ /* Allow to set OSXSAVE if guest has xsave feature. */
+ hvm_cpuid(0x1, &eax, &ebx, &ecx, &edx);
+ if ( ecx & cpufeat_mask(X86_FEATURE_XSAVE) )
+ data |= X86_CR4_OSXSAVE;
/* allow 0-settings except SMXE */
- data = 0x267ff & ~X86_CR4_SMXE;
+ data &= ~X86_CR4_SMXE;
break;
case MSR_IA...
2007 Aug 09
0
[PATCH] x86/hvm: miscellaneous CPUID handling changes
...l.com>
Index: 2007-08-08/xen/arch/x86/hvm/hvm.c
===================================================================
--- 2007-08-08.orig/xen/arch/x86/hvm/hvm.c 2007-08-06 15:08:40.000000000 +0200
+++ 2007-08-08/xen/arch/x86/hvm/hvm.c 2007-08-08 11:45:25.000000000 +0200
@@ -614,37 +614,38 @@ void hvm_cpuid(unsigned int input, unsig
{
if ( !cpuid_hypervisor_leaves(input, eax, ebx, ecx, edx) )
{
+ struct vcpu *v = current;
+
cpuid(input, eax, ebx, ecx, edx);
- if ( input == 0x00000001 )
+ switch ( input )
{
- struct vcpu *v = current;
-
-...
2012 Feb 29
4
Problems with hyperthreading in Windows HVM
Hi,
I have been trying to get Hyperthreading to work in a Windows HVM on
Xen 4.1.2 as described in ''xmexample.hvm''. I think I have set it up
correctly, but I can''t seem to get it to work. There is not much
documentation on it and most topics are from years ago. I''m curious to
know to whether this functionality is still supposed to work.
I''m aware that
2006 Nov 29
25
EFER in HVM guests
Is it intentional that
- under SVM, 32-bit guests can freely set EFER.LME
- under VMX, 32-bit guests can''t access EFER at all?
Thanks, Jan
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2013 Jan 03
2
[PATCH V4] mem_event: Add support for MEM_EVENT_REASON_MSR
...l.com>
Acked-by: Tim Deegan <tim@xen.org>
diff -r c4114a042410 -r 3450c4dfff7f xen/arch/x86/hvm/hvm.c
--- a/xen/arch/x86/hvm/hvm.c Fri Dec 21 17:05:38 2012 +0000
+++ b/xen/arch/x86/hvm/hvm.c Thu Jan 03 12:05:13 2013 +0200
@@ -2927,6 +2927,8 @@ int hvm_msr_write_intercept(unsigned int
hvm_cpuid(1, &cpuid[0], &cpuid[1], &cpuid[2], &cpuid[3]);
mtrr = !!(cpuid[3] & cpufeat_mask(X86_FEATURE_MTRR));
+ hvm_memory_event_msr(msr, msr_content);
+
switch ( msr )
{
case MSR_EFER:
@@ -3862,6 +3864,7 @@ long do_hvm_op(unsigned long op, XEN_GUE...
2013 Dec 02
0
[PATCH v4 3/7] X86: MPX IA32_BNDCFGS msr handle
...hvm/vmx/vmcs.h | 2 ++
xen/include/asm-x86/msr-index.h | 2 ++
5 files changed, 18 insertions(+), 2 deletions(-)
diff --git a/xen/arch/x86/hvm/hvm.c b/xen/arch/x86/hvm/hvm.c
index 9c88c73..0f7178b 100644
--- a/xen/arch/x86/hvm/hvm.c
+++ b/xen/arch/x86/hvm/hvm.c
@@ -2905,6 +2905,12 @@ void hvm_cpuid(unsigned int input, unsigned int *eax, unsigned int *ebx,
if ( (count == 0) && !cpu_has_smep )
*ebx &= ~cpufeat_mask(X86_FEATURE_SMEP);
+ /* Don''t expose MPX to hvm when VMX support is not available */
+ if ( (count == 0) &&
+...
2011 Nov 24
0
[PATCH 6/6] X86: implement PCID/INVPCID for hvm
..._CR4_PAE | X86_CR4_SMEP)) ||
+ (!(value & X86_CR4_PCIDE) && (old_cr & X86_CR4_PCIDE)) )
+ {
if ( !nestedhvm_vmswitch_in_progress(v) && nestedhvm_vcpu_in_guestmode(v) )
paging_update_nestedmode(v);
else
@@ -2409,10 +2430,18 @@ void hvm_cpuid(unsigned int input, unsig
if ( xsave_enabled(v) )
*ecx |= (v->arch.hvm_vcpu.guest_cr[4] & X86_CR4_OSXSAVE) ?
cpufeat_mask(X86_FEATURE_OSXSAVE) : 0;
+
+ /* Not expose PCID to non-hap hvm */
+ if ( !hap_enabled(d) )
+ *ecx &a...
2007 Jan 11
6
[PATCH 4/8] HVM save restore: vcpu context support
...pu *v, struct hvmcpu_context *ctxt)
+{
+ if ( ctxt->valid != 0x55885588)
+ return;
+
+ hvm_funcs.load_cpu_ctxt(v, ctxt);
+
+ /* restore guest time*/
+ hvm_set_guest_time(v, ctxt->gtime);
+}
+
static inline int
hvm_paging_enabled(struct vcpu *v)
{
@@ -222,8 +258,6 @@ void hvm_cpuid(unsigned int input, unsig
void hvm_cpuid(unsigned int input, unsigned int *eax, unsigned int *ebx,
unsigned int *ecx, unsigned int *edx);
void hvm_stts(struct vcpu *v);
-void hvm_set_guest_time(struct vcpu *v, u64 gtime);
-u64 hvm_get_guest_time(struct vcpu *v)...
2012 Dec 20
4
[PATCH V2] mem_event: Add support for MEM_EVENT_REASON_MSR
...l.com>
Acked-by: Tim Deegan <tim@xen.org>
diff -r b04de677de31 -r e33d3d37dfbf xen/arch/x86/hvm/hvm.c
--- a/xen/arch/x86/hvm/hvm.c Tue Dec 18 18:16:52 2012 +0000
+++ b/xen/arch/x86/hvm/hvm.c Thu Dec 20 14:52:52 2012 +0200
@@ -2927,6 +2927,8 @@ int hvm_msr_write_intercept(unsigned int
hvm_cpuid(1, &cpuid[0], &cpuid[1], &cpuid[2], &cpuid[3]);
mtrr = !!(cpuid[3] & cpufeat_mask(X86_FEATURE_MTRR));
+ hvm_memory_event_msr(msr, msr_content);
+
switch ( msr )
{
case MSR_EFER:
@@ -3857,6 +3859,7 @@ long do_hvm_op(unsigned long op, XEN_GUE...