[Qemu-devel] [PATCH 0/2] [PULL] qemu-kvm.git uq/master queue

[Qemu-devel] [PATCH 0/2] [PULL] qemu-kvm.git uq/master queue

[Marcelo Tosatti]

The following changes since commit 748a4ee311b8353292e85851034cb917906aac14:
  Blue Swirl (1):
        sparc32: use FW_CFG_CMDLINE_SIZE

are available in the git repository at:

  git://git.kernel.org/pub/scm/virt/kvm/qemu-kvm.git uq/master

Alex Williamson (1):
      kvm: Don't walk memory_size == 0 slots in kvm_client_migration_log

Gleb Natapov (1):
      kvm: remove guest triggerable abort()

 kvm-all.c |   19 +++++++------------
 1 files changed, 7 insertions(+), 12 deletions(-)

[Qemu-devel] [PATCH 0/2] [PULL] qemu-kvm.git uq/master queue

[Marcelo Tosatti]

The following changes since commit 578c7b2ca8ee9e97fa8693b1a83d517e8e3f962e:

  audio: fix integer overflow expression (2011-06-01 00:14:07 +0400)

are available in the git repository at:
  git://git.kernel.org/pub/scm/virt/kvm/qemu-kvm.git uq/master

Yang, Wei Y (1):
      kvm: Enable CPU SMEP feature

brillywu@viatech.com.cn (1):
      kvm: Add CPUID support for VIA CPU

 target-i386/cpu.h   |    9 ++++++-
 target-i386/cpuid.c |   66 +++++++++++++++++++++++++++++++++++++++++++++++++-
 target-i386/kvm.c   |   15 +++++++++++
 3 files changed, 87 insertions(+), 3 deletions(-)

[Qemu-devel] [PATCH 1/2] kvm: Add CPUID support for VIA CPU

[Marcelo Tosatti]

From: "brillywu@viatech.com.cn" <brillywu@viatech.com.cn>

When KVM is running on VIA CPU with host cpu's model, the
feautures of VIA CPU will be passed into kvm guest by calling
the CPUID instruction for Centaur.

Signed-off-by: BrillyWu<brillywu@viatech.com.cn>
Signed-off-by: KaryJin<karyjin@viatech.com.cn>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
---
 target-i386/cpu.h   |    9 +++++++-
 target-i386/cpuid.c |   53 +++++++++++++++++++++++++++++++++++++++++++++++++-
 target-i386/kvm.c   |   15 ++++++++++++++
 3 files changed, 74 insertions(+), 3 deletions(-)

diff --git a/target-i386/cpu.h b/target-i386/cpu.h
index 715828f..0b039d4 100644
--- a/target-i386/cpu.h
+++ b/target-i386/cpu.h
@@ -438,9 +438,13 @@
 #define CPUID_VENDOR_INTEL_3 0x6c65746e /* "ntel" */
 
 #define CPUID_VENDOR_AMD_1   0x68747541 /* "Auth" */
-#define CPUID_VENDOR_AMD_2   0x69746e65 /* "enti" */ 
+#define CPUID_VENDOR_AMD_2   0x69746e65 /* "enti" */
 #define CPUID_VENDOR_AMD_3   0x444d4163 /* "cAMD" */
 
+#define CPUID_VENDOR_VIA_1   0x746e6543 /* "Cent" */
+#define CPUID_VENDOR_VIA_2   0x48727561 /* "aurH" */
+#define CPUID_VENDOR_VIA_3   0x736c7561 /* "auls" */
+
 #define CPUID_MWAIT_IBE     (1 << 1) /* Interrupts can exit capability */
 #define CPUID_MWAIT_EMX     (1 << 0) /* enumeration supported */
 
@@ -730,6 +734,9 @@ typedef struct CPUX86State {
     uint32_t cpuid_ext3_features;
     uint32_t cpuid_apic_id;
     int cpuid_vendor_override;
+    /* Store the results of Centaur's CPUID instructions */
+    uint32_t cpuid_xlevel2;
+    uint32_t cpuid_ext4_features;
 
     /* MTRRs */
     uint64_t mtrr_fixed[11];
diff --git a/target-i386/cpuid.c b/target-i386/cpuid.c
index e479a4d..40a73c7 100644
--- a/target-i386/cpuid.c
+++ b/target-i386/cpuid.c
@@ -230,6 +230,9 @@ typedef struct x86_def_t {
     char model_id[48];
     int vendor_override;
     uint32_t flags;
+    /* Store the results of Centaur's CPUID instructions */
+    uint32_t ext4_features;
+    uint32_t xlevel2;
 } x86_def_t;
 
 #define I486_FEATURES (CPUID_FP87 | CPUID_VME | CPUID_PSE)
@@ -522,6 +525,18 @@ static int cpu_x86_fill_host(x86_def_t *x86_cpu_def)
     cpu_x86_fill_model_id(x86_cpu_def->model_id);
     x86_cpu_def->vendor_override = 0;
 
+    /* Call Centaur's CPUID instruction. */
+    if (x86_cpu_def->vendor1 == CPUID_VENDOR_VIA_1 &&
+        x86_cpu_def->vendor2 == CPUID_VENDOR_VIA_2 &&
+        x86_cpu_def->vendor3 == CPUID_VENDOR_VIA_3) {
+        host_cpuid(0xC0000000, 0, &eax, &ebx, &ecx, &edx);
+        if (eax >= 0xC0000001) {
+            /* Support VIA max extended level */
+            x86_cpu_def->xlevel2 = eax;
+            host_cpuid(0xC0000001, 0, &eax, &ebx, &ecx, &edx);
+            x86_cpu_def->ext4_features = edx;
+        }
+    }
 
     /*
      * Every SVM feature requires emulation support in KVM - so we can't just
@@ -855,6 +870,8 @@ int cpu_x86_register (CPUX86State *env, const char *cpu_model)
     env->cpuid_xlevel = def->xlevel;
     env->cpuid_kvm_features = def->kvm_features;
     env->cpuid_svm_features = def->svm_features;
+    env->cpuid_ext4_features = def->ext4_features;
+    env->cpuid_xlevel2 = def->xlevel2;
     if (!kvm_enabled()) {
         env->cpuid_features &= TCG_FEATURES;
         env->cpuid_ext_features &= TCG_EXT_FEATURES;
@@ -1035,8 +1052,18 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
 {
     /* test if maximum index reached */
     if (index & 0x80000000) {
-        if (index > env->cpuid_xlevel)
-            index = env->cpuid_level;
+        if (index > env->cpuid_xlevel) {
+            if (env->cpuid_xlevel2 > 0) {
+                /* Handle the Centaur's CPUID instruction. */
+                if (index > env->cpuid_xlevel2) {
+                    index = env->cpuid_xlevel2;
+                } else if (index < 0xC0000000) {
+                    index = env->cpuid_xlevel;
+                }
+            } else {
+                index =  env->cpuid_xlevel;
+            }
+        }
     } else {
         if (index > env->cpuid_level)
             index = env->cpuid_level;
@@ -1231,6 +1258,28 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
 		*edx = 0;
 	}
         break;
+    case 0xC0000000:
+        *eax = env->cpuid_xlevel2;
+        *ebx = 0;
+        *ecx = 0;
+        *edx = 0;
+        break;
+    case 0xC0000001:
+        /* Support for VIA CPU's CPUID instruction */
+        *eax = env->cpuid_version;
+        *ebx = 0;
+        *ecx = 0;
+        *edx = env->cpuid_ext4_features;
+        break;
+    case 0xC0000002:
+    case 0xC0000003:
+    case 0xC0000004:
+        /* Reserved for the future, and now filled with zero */
+        *eax = 0;
+        *ebx = 0;
+        *ecx = 0;
+        *edx = 0;
+        break;
     default:
         /* reserved values: zero */
         *eax = 0;
diff --git a/target-i386/kvm.c b/target-i386/kvm.c
index faedc6c..1ae2d61 100644
--- a/target-i386/kvm.c
+++ b/target-i386/kvm.c
@@ -482,6 +482,21 @@ int kvm_arch_init_vcpu(CPUState *env)
         cpu_x86_cpuid(env, i, 0, &c->eax, &c->ebx, &c->ecx, &c->edx);
     }
 
+    /* Call Centaur's CPUID instructions they are supported. */
+    if (env->cpuid_xlevel2 > 0) {
+        env->cpuid_ext4_features &=
+            kvm_arch_get_supported_cpuid(env, 0xC0000001, 0, R_EDX);
+        cpu_x86_cpuid(env, 0xC0000000, 0, &limit, &unused, &unused, &unused);
+
+        for (i = 0xC0000000; i <= limit; i++) {
+            c = &cpuid_data.entries[cpuid_i++];
+
+            c->function = i;
+            c->flags = 0;
+            cpu_x86_cpuid(env, i, 0, &c->eax, &c->ebx, &c->ecx, &c->edx);
+        }
+    }
+
     cpuid_data.cpuid.nent = cpuid_i;
 
 #ifdef KVM_CAP_MCE
-- 
1.7.5.2

[Qemu-devel] [PATCH 2/2] kvm: Enable CPU SMEP feature

[Marcelo Tosatti]

From: "Yang, Wei Y" <wei.y.yang@intel.com>

This patchset enables a new CPU feature SMEP (Supervisor Mode Execution
Protection) in QEMU-KVM. SMEP prevents kernel from executing code in application.
Updated Intel SDM describes this CPU feature. The document will be published soon.

SMEP is identified by CPUID leaf 7 EBX[7], which is 0 before. Get the right value by query KVM kernel module, so that guest can get SMEP through CPUID.

 Signed-off-by: Yang, Wei <wei.y.yang@intel.com>
 Singed-off-by: Shan, Haitao <haitao.shan@intel.com>
 Singed-off-by: Li, Xin <xin.li@intel.com>

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
---
 target-i386/cpuid.c |   13 +++++++++++++
 1 files changed, 13 insertions(+), 0 deletions(-)

diff --git a/target-i386/cpuid.c b/target-i386/cpuid.c
index 40a73c7..79e7580 100644
--- a/target-i386/cpuid.c
+++ b/target-i386/cpuid.c
@@ -1142,6 +1142,19 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
         *ecx = 0;
         *edx = 0;
         break;
+    case 7:
+        if (kvm_enabled()) {
+            *eax = kvm_arch_get_supported_cpuid(env, 0x7, count, R_EAX);
+            *ebx = kvm_arch_get_supported_cpuid(env, 0x7, count, R_EBX);
+            *ecx = kvm_arch_get_supported_cpuid(env, 0x7, count, R_ECX);
+            *edx = kvm_arch_get_supported_cpuid(env, 0x7, count, R_EDX);
+        } else {
+            *eax = 0;
+            *ebx = 0;
+            *ecx = 0;
+            *edx = 0;
+        }
+        break;
     case 9:
         /* Direct Cache Access Information Leaf */
         *eax = 0; /* Bits 0-31 in DCA_CAP MSR */
-- 
1.7.5.2

Re: [Qemu-devel] [PATCH 0/2] [PULL] qemu-kvm.git uq/master queue

[Anthony Liguori]

On 06/01/2011 12:31 PM, Marcelo Tosatti wrote:
> The following changes since commit 578c7b2ca8ee9e97fa8693b1a83d517e8e3f962e:
>
>    audio: fix integer overflow expression (2011-06-01 00:14:07 +0400)

Pulled.  Thanks.

Regards,

Anthony Liguori

>
> are available in the git repository at:
>    git://git.kernel.org/pub/scm/virt/kvm/qemu-kvm.git uq/master
>
> Yang, Wei Y (1):
>        kvm: Enable CPU SMEP feature
>
> brillywu@viatech.com.cn (1):
>        kvm: Add CPUID support for VIA CPU
>
>   target-i386/cpu.h   |    9 ++++++-
>   target-i386/cpuid.c |   66 +++++++++++++++++++++++++++++++++++++++++++++++++-
>   target-i386/kvm.c   |   15 +++++++++++
>   3 files changed, 87 insertions(+), 3 deletions(-)
>
>

[Qemu-devel] [PATCH 0/2] [PULL] qemu-kvm.git uq/master queue

[Marcelo Tosatti]

The following changes since commit ce34cf72fe508b27a78f83c184142e8d1e6a048a:

  Merge remote-tracking branch 'awilliam/tags/vfio-pci-for-qemu-1.3.0-rc0' into staging (2012-11-14 08:53:40 -0600)

are available in the git repository at:

  git://git.kernel.org/pub/scm/virt/kvm/qemu-kvm.git uq/master

Jan Kiszka (1):
      kvm: Actually remove software breakpoints from list on cleanup

Marcelo Tosatti (1):
      acpi_piix4: fix migration of gpe fields

 hw/acpi_piix4.c |   50 ++++++++++++++++++++++++++++++++++++++++++++++----
 kvm-all.c       |    2 ++
 2 files changed, 48 insertions(+), 4 deletions(-)

[Qemu-devel] [PATCH 0/2] [PULL] qemu-kvm.git uq/master queue

[Gleb Natapov]

The following changes since commit e376a788ae130454ad5e797f60cb70d0308babb6:

  Merge remote-tracking branch 'kwolf/for-anthony' into staging (2012-12-13 14:32:28 -0600)

are available in the git repository at:


  git://git.kernel.org/pub/scm/virt/kvm/qemu-kvm.git uq/master

for you to fetch changes up to 0a2a59d35cbabf63c91340a1c62038e3e60538c1:

  qemu-kvm/pci-assign: 64 bits bar emulation (2012-12-25 14:37:52 +0200)

----------------------------------------------------------------
Will Auld (1):
      target-i386: Enabling IA32_TSC_ADJUST for QEMU KVM guest VMs

Xudong Hao (1):
      qemu-kvm/pci-assign: 64 bits bar emulation

 hw/kvm/pci-assign.c   |   14 ++++++++++----
 target-i386/cpu.h     |    2 ++
 target-i386/kvm.c     |   14 ++++++++++++++
 target-i386/machine.c |   21 +++++++++++++++++++++
 4 files changed, 47 insertions(+), 4 deletions(-)

Re: [Qemu-devel] [PATCH 0/2] [PULL] qemu-kvm.git uq/master queue

[Anthony Liguori]

Gleb Natapov <gleb@redhat.com> writes:

> The following changes since commit e376a788ae130454ad5e797f60cb70d0308babb6:
>
>   Merge remote-tracking branch 'kwolf/for-anthony' into staging (2012-12-13 14:32:28 -0600)
>
> are available in the git repository at:
>
>
>   git://git.kernel.org/pub/scm/virt/kvm/qemu-kvm.git uq/master
>
> for you to fetch changes up to 0a2a59d35cbabf63c91340a1c62038e3e60538c1:
>
>   qemu-kvm/pci-assign: 64 bits bar emulation (2012-12-25 14:37:52 +0200)
>

Pulled. Thanks.

Regards,

Anthony Liguori

> ----------------------------------------------------------------
> Will Auld (1):
>       target-i386: Enabling IA32_TSC_ADJUST for QEMU KVM guest VMs
>
> Xudong Hao (1):
>       qemu-kvm/pci-assign: 64 bits bar emulation
>
>  hw/kvm/pci-assign.c   |   14 ++++++++++----
>  target-i386/cpu.h     |    2 ++
>  target-i386/kvm.c     |   14 ++++++++++++++
>  target-i386/machine.c |   21 +++++++++++++++++++++
>  4 files changed, 47 insertions(+), 4 deletions(-)
> --
> To unsubscribe from this list: send the line "unsubscribe kvm" in
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