[PATCH][lapic5] kvm: qemu: prevent set wrong cr8 when using irqchip

[PATCH][lapic5] kvm: qemu: prevent set wrong cr8 when using irqchip

[Yang, Sheng]

[-- Attachment #1: Type: text/plain, Size: 734 bytes --]

this allows running 64-bit Windows.

Signed-off-by: Sheng Yang <sheng.yang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
---
 qemu/qemu-kvm.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/qemu/qemu-kvm.c b/qemu/qemu-kvm.c
index 3fc32f7..af7b1d8 100644
--- a/qemu/qemu-kvm.c
+++ b/qemu/qemu-kvm.c
@@ -516,8 +516,8 @@ static int pre_kvm_run(void *opaque, int vcpu)
 	    usleep(1000);
 	pthread_mutex_lock(&qemu_mutex);
     }
-
-    kvm_set_cr8(kvm_context, vcpu, cpu_get_apic_tpr(env));
+    if (!kvm_irqchip)
+	kvm_set_cr8(kvm_context, vcpu, cpu_get_apic_tpr(env));
     if (env->interrupt_request & CPU_INTERRUPT_EXIT)
 	return 1;
     pthread_mutex_unlock(&qemu_mutex);
-- 
1.5.2


[-- Attachment #2: kvm-qemu-prevent-set-wrong-cr8-when-using-irqchip.patch --]
[-- Type: application/octet-stream, Size: 898 bytes --]

From 6069de2206f60e9fee4356e1ba929b02a757514a Mon Sep 17 00:00:00 2001
From: Sheng Yang <sheng.yang@intel.com>
Date: Thu, 16 Aug 2007 22:02:59 +0800
Subject: [PATCH] kvm: qemu: prevent set wrong cr8 when using irqchip

this allows running 64-bit Windows.

Signed-off-by: Sheng Yang <sheng.yang@intel.com>
---
 qemu/qemu-kvm.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/qemu/qemu-kvm.c b/qemu/qemu-kvm.c
index 3fc32f7..af7b1d8 100644
--- a/qemu/qemu-kvm.c
+++ b/qemu/qemu-kvm.c
@@ -516,8 +516,8 @@ static int pre_kvm_run(void *opaque, int vcpu)
 	    usleep(1000);
 	pthread_mutex_lock(&qemu_mutex);
     }
-
-    kvm_set_cr8(kvm_context, vcpu, cpu_get_apic_tpr(env));
+    if (!kvm_irqchip)
+	kvm_set_cr8(kvm_context, vcpu, cpu_get_apic_tpr(env));
     if (env->interrupt_request & CPU_INTERRUPT_EXIT)
 	return 1;
     pthread_mutex_unlock(&qemu_mutex);
-- 
1.5.2


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Re: [PATCH][lapic5] kvm: qemu: prevent set wrong cr8 whenusing irqchip

[He, Qing]

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I'm updating this patch, by doing this, UP booting of 32bit ACPI MP HAL Windows is fixed.

Signed-off-by: Qing He <qing.he-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>


qemu/qemu-kvm.c |    9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/qemu/qemu-kvm.c b/qemu/qemu-kvm.c
index 3fc32f7..d07af9f 100644
--- a/qemu/qemu-kvm.c
+++ b/qemu/qemu-kvm.c
@@ -516,10 +516,11 @@ static int pre_kvm_run(void *opaque, int vcpu)
 	    usleep(1000);
 	pthread_mutex_lock(&qemu_mutex);
     }
-
-    kvm_set_cr8(kvm_context, vcpu, cpu_get_apic_tpr(env));
-    if (env->interrupt_request & CPU_INTERRUPT_EXIT)
-	return 1;
+    if (!kvm_irqchip) {
+	kvm_set_cr8(kvm_context, vcpu, cpu_get_apic_tpr(env));
+	if (env->interrupt_request & CPU_INTERRUPT_EXIT)
+	    return 1;
+    }
     pthread_mutex_unlock(&qemu_mutex);
     return 0;
 }


>-----Original Message-----
>From: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
>[mailto:kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org] On Behalf Of Yang, Sheng
>Sent: 2007年8月16日 22:13
>To: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
>Subject: [kvm-devel] [PATCH][lapic5] kvm: qemu: prevent set wrong cr8 whenusing
>irqchip
>
>this allows running 64-bit Windows.
>
>Signed-off-by: Sheng Yang <sheng.yang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
>---
> qemu/qemu-kvm.c |    4 ++--
> 1 files changed, 2 insertions(+), 2 deletions(-)
>
>diff --git a/qemu/qemu-kvm.c b/qemu/qemu-kvm.c
>index 3fc32f7..af7b1d8 100644
>--- a/qemu/qemu-kvm.c
>+++ b/qemu/qemu-kvm.c
>@@ -516,8 +516,8 @@ static int pre_kvm_run(void *opaque, int vcpu)
> 	    usleep(1000);
> 	pthread_mutex_lock(&qemu_mutex);
>     }
>-
>-    kvm_set_cr8(kvm_context, vcpu, cpu_get_apic_tpr(env));
>+    if (!kvm_irqchip)
>+	kvm_set_cr8(kvm_context, vcpu, cpu_get_apic_tpr(env));
>     if (env->interrupt_request & CPU_INTERRUPT_EXIT)
> 	return 1;
>     pthread_mutex_unlock(&qemu_mutex);
>--
>1.5.2


[-- Attachment #2: kvm-qemu-irqchip-checking.patch --]
[-- Type: application/octet-stream, Size: 679 bytes --]

 qemu/qemu-kvm.c |    9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/qemu/qemu-kvm.c b/qemu/qemu-kvm.c
index 3fc32f7..d07af9f 100644
--- a/qemu/qemu-kvm.c
+++ b/qemu/qemu-kvm.c
@@ -516,10 +516,11 @@ static int pre_kvm_run(void *opaque, int vcpu)
 	    usleep(1000);
 	pthread_mutex_lock(&qemu_mutex);
     }
-
-    kvm_set_cr8(kvm_context, vcpu, cpu_get_apic_tpr(env));
-    if (env->interrupt_request & CPU_INTERRUPT_EXIT)
-	return 1;
+    if (!kvm_irqchip) {
+	kvm_set_cr8(kvm_context, vcpu, cpu_get_apic_tpr(env));
+	if (env->interrupt_request & CPU_INTERRUPT_EXIT)
+	    return 1;
+    }
     pthread_mutex_unlock(&qemu_mutex);
     return 0;
 }

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Re: [PATCH][lapic5] kvm: qemu: prevent set wrong cr8 whenusing irqchip

[Avi Kivity]

[-- Attachment #1: Type: text/plain, Size: 241 bytes --]

He, Qing wrote:
> I'm updating this patch, by doing this, UP booting of 32bit ACPI MP HAL Windows is fixed.
>
>   

Amended previous commit -- thanks.

-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.



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Re: [PATCH][lapic5] kvm: qemu: prevent set wrong cr8 when using irqchip

[Avi Kivity]

Yang, Sheng wrote:
> this allows running 64-bit Windows.
>
>   

Applied, thanks.

-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.


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