* [Qemu-devel] [PATCH] apic: test tsc deadline timer
@ 2011-10-09 10:05 Liu, Jinsong
2011-10-09 10:24 ` Avi Kivity
0 siblings, 1 reply; 8+ messages in thread
From: Liu, Jinsong @ 2011-10-09 10:05 UTC (permalink / raw)
To: Marcelo Tosatti, Avi Kivity, kvm@vger.kernel.org,
qemu-devel@nongnu.org
[-- Attachment #1: Type: text/plain, Size: 3053 bytes --]
Marcelo,
I add test case for tsc deadline timer https://github.com/avikivity/kvm-unit-tests, as attached.
According to the kvm-unit-tests README, I try to run
qemu-system-x86_64 -device testdev,chardev=testlog -chardev file,id=testlog,path=apic.out -kernel ./x86/apic.flat
but get nothing from the testlog 'apic.out'
(BTW, at kvm side I did observe the expected tsc deadline timer action)
I also try to run the README example
qemu-system-x86_64 -device testdev,chardev=testlog -chardev file,id=testlog,path=msr.out -kernel ./x86/msr.flat
but still get nothing from 'msr.out'
Do I miss something? how can I get test log?
Thanks,
Jinsong
==================
>From 92d05a2caca4d0a35651bd06b88cf78b4e24d5b7 Mon Sep 17 00:00:00 2001
From: Liu, Jinsong <jinsong.liu@intel.com>
Date: Sun, 9 Oct 2011 17:16:17 +0800
Subject: [PATCH] apic: test tsc deadline timer
Test tsc deadline timer: detect tsc deadline timer support by CPUID,
enable tsc deadline timer mode by MMIO, then start tsc deadline timer by WRMSR.
Signed-off-by: Liu, Jinsong <jinsong.liu@intel.com>
---
x86/apic.c | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 53 insertions(+), 0 deletions(-)
diff --git a/x86/apic.c b/x86/apic.c
index c51e6a5..b086663 100644
--- a/x86/apic.c
+++ b/x86/apic.c
@@ -25,6 +25,57 @@ static void test_lapic_existence(void)
report("apic existence", (u16)lvr == 0x14);
}
+#define TSC_DEADLINE_TIMER_MODE (2 << 17)
+#define TSC_DEADLINE_TIMER_VECTOR 0xef
+#define MSR_IA32_TSC 0x00000010
+#define MSR_IA32_TSCDEADLINE 0x000006e0
+
+static int tdt_count;
+
+static void tsc_deadline_timer_isr(isr_regs_t *regs)
+{
+ ++tdt_count;
+}
+
+static void start_tsc_deadline_timer(void)
+{
+ unsigned a, d;
+
+ handle_irq(TSC_DEADLINE_TIMER_VECTOR, tsc_deadline_timer_isr);
+ irq_enable();
+
+ asm ("rdmsr" : "=a"(a), "=d"(d) : "c"(MSR_IA32_TSC));
+ asm ("wrmsr" : : "a"(a), "d"(d), "c"(MSR_IA32_TSCDEADLINE));
+ asm volatile ("nop");
+ report("tsc deadline timer", tdt_count == 1);
+}
+
+static int enable_tsc_deadline_timer(void)
+{
+ unsigned a, b, c, d;
+ uint32_t lvtt;
+
+ asm ("cpuid" : "=a"(a), "=b"(b), "=c"(c), "=d"(d) : "0"(1));
+
+ if (c & (1 << 24)) {
+ lvtt = TSC_DEADLINE_TIMER_MODE | TSC_DEADLINE_TIMER_VECTOR;
+ apic_write(APIC_LVTT, lvtt);
+ start_tsc_deadline_timer();
+ return 1;
+ } else {
+ return 0;
+ }
+}
+
+static void test_tsc_deadline_timer(void)
+{
+ if(enable_tsc_deadline_timer()) {
+ printf("tsc deadline timer enabled\n");
+ } else {
+ printf("tsc deadline timer not detected\n");
+ }
+}
+
#define MSR_APIC_BASE 0x0000001b
void test_enable_x2apic(void)
@@ -291,6 +342,8 @@ int main()
test_sti_nmi();
test_multiple_nmi();
+ test_tsc_deadline_timer();
+
printf("\nsummary: %d tests, %d failures\n", g_tests, g_fail);
return g_fail != 0;
--
1.6.5.6
[-- Attachment #2: test-tsc-deadline-timer.patch --]
[-- Type: application/octet-stream, Size: 2287 bytes --]
From 92d05a2caca4d0a35651bd06b88cf78b4e24d5b7 Mon Sep 17 00:00:00 2001
From: Liu, Jinsong <jinsong.liu@intel.com>
Date: Sun, 9 Oct 2011 17:16:17 +0800
Subject: [PATCH] apic: test tsc deadline timer
Test tsc deadline timer: detect tsc deadline timer support by CPUID,
enable tsc deadline timer mode by MMIO, then start tsc deadline timer by WRMSR.
Signed-off-by: Liu, Jinsong <jinsong.liu@intel.com>
---
x86/apic.c | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 53 insertions(+), 0 deletions(-)
diff --git a/x86/apic.c b/x86/apic.c
index c51e6a5..b086663 100644
--- a/x86/apic.c
+++ b/x86/apic.c
@@ -25,6 +25,57 @@ static void test_lapic_existence(void)
report("apic existence", (u16)lvr == 0x14);
}
+#define TSC_DEADLINE_TIMER_MODE (2 << 17)
+#define TSC_DEADLINE_TIMER_VECTOR 0xef
+#define MSR_IA32_TSC 0x00000010
+#define MSR_IA32_TSCDEADLINE 0x000006e0
+
+static int tdt_count;
+
+static void tsc_deadline_timer_isr(isr_regs_t *regs)
+{
+ ++tdt_count;
+}
+
+static void start_tsc_deadline_timer(void)
+{
+ unsigned a, d;
+
+ handle_irq(TSC_DEADLINE_TIMER_VECTOR, tsc_deadline_timer_isr);
+ irq_enable();
+
+ asm ("rdmsr" : "=a"(a), "=d"(d) : "c"(MSR_IA32_TSC));
+ asm ("wrmsr" : : "a"(a), "d"(d), "c"(MSR_IA32_TSCDEADLINE));
+ asm volatile ("nop");
+ report("tsc deadline timer", tdt_count == 1);
+}
+
+static int enable_tsc_deadline_timer(void)
+{
+ unsigned a, b, c, d;
+ uint32_t lvtt;
+
+ asm ("cpuid" : "=a"(a), "=b"(b), "=c"(c), "=d"(d) : "0"(1));
+
+ if (c & (1 << 24)) {
+ lvtt = TSC_DEADLINE_TIMER_MODE | TSC_DEADLINE_TIMER_VECTOR;
+ apic_write(APIC_LVTT, lvtt);
+ start_tsc_deadline_timer();
+ return 1;
+ } else {
+ return 0;
+ }
+}
+
+static void test_tsc_deadline_timer(void)
+{
+ if(enable_tsc_deadline_timer()) {
+ printf("tsc deadline timer enabled\n");
+ } else {
+ printf("tsc deadline timer not detected\n");
+ }
+}
+
#define MSR_APIC_BASE 0x0000001b
void test_enable_x2apic(void)
@@ -291,6 +342,8 @@ int main()
test_sti_nmi();
test_multiple_nmi();
+ test_tsc_deadline_timer();
+
printf("\nsummary: %d tests, %d failures\n", g_tests, g_fail);
return g_fail != 0;
--
1.6.5.6
^ permalink raw reply related [flat|nested] 8+ messages in thread* Re: [Qemu-devel] [PATCH] apic: test tsc deadline timer
2011-10-09 10:05 [Qemu-devel] [PATCH] apic: test tsc deadline timer Liu, Jinsong
@ 2011-10-09 10:24 ` Avi Kivity
2011-10-09 15:14 ` Liu, Jinsong
2011-10-09 15:32 ` [Qemu-devel] [PATCH] apic: test tsc deadline timer Liu, Jinsong
0 siblings, 2 replies; 8+ messages in thread
From: Avi Kivity @ 2011-10-09 10:24 UTC (permalink / raw)
To: Liu, Jinsong; +Cc: Marcelo Tosatti, qemu-devel@nongnu.org, kvm@vger.kernel.org
On 10/09/2011 12:05 PM, Liu, Jinsong wrote:
> Marcelo,
>
> I add test case for tsc deadline timer https://github.com/avikivity/kvm-unit-tests, as attached.
>
> According to the kvm-unit-tests README, I try to run
> qemu-system-x86_64 -device testdev,chardev=testlog -chardev file,id=testlog,path=apic.out -kernel ./x86/apic.flat
> but get nothing from the testlog 'apic.out'
> (BTW, at kvm side I did observe the expected tsc deadline timer action)
>
> I also try to run the README example
> qemu-system-x86_64 -device testdev,chardev=testlog -chardev file,id=testlog,path=msr.out -kernel ./x86/msr.flat
> but still get nothing from 'msr.out'
>
> Do I miss something? how can I get test log?
This was recently changed, it now outputs to the serial port.
Try
qemu-system-x86_64 -device testdev,chardev=testlog -chardev file,id=testlog,path=apic.out -serial stdio -kernel ./x86/apic.flat
> +
> +static void start_tsc_deadline_timer(void)
> +{
> + unsigned a, d;
> +
> + handle_irq(TSC_DEADLINE_TIMER_VECTOR, tsc_deadline_timer_isr);
> + irq_enable();
> +
> + asm ("rdmsr" : "=a"(a), "=d"(d) : "c"(MSR_IA32_TSC));
> + asm ("wrmsr" : : "a"(a), "d"(d), "c"(MSR_IA32_TSCDEADLINE));
> + asm volatile ("nop");
> + report("tsc deadline timer", tdt_count == 1);
> +}
Please use rdmsr()/wrmsr() from processor.h.
> +
> +static int enable_tsc_deadline_timer(void)
> +{
> + unsigned a, b, c, d;
> + uint32_t lvtt;
> +
> + asm ("cpuid" : "=a"(a), "=b"(b), "=c"(c), "=d"(d) : "0"(1));
cpuid()...
> +
> + if (c& (1<< 24)) {
> + lvtt = TSC_DEADLINE_TIMER_MODE | TSC_DEADLINE_TIMER_VECTOR;
> + apic_write(APIC_LVTT, lvtt);
> + start_tsc_deadline_timer();
> + return 1;
> + } else {
> + return 0;
> + }
> +}
> +
> +static void test_tsc_deadline_timer(void)
> +{
> + if(enable_tsc_deadline_timer()) {
> + printf("tsc deadline timer enabled\n");
> + } else {
> + printf("tsc deadline timer not detected\n");
> + }
> +}
> +
> #define MSR_APIC_BASE 0x0000001b
>
> void test_enable_x2apic(void)
> @@ -291,6 +342,8 @@ int main()
> test_sti_nmi();
> test_multiple_nmi();
>
> + test_tsc_deadline_timer();
> +
> printf("\nsummary: %d tests, %d failures\n", g_tests, g_fail);
>
> return g_fail != 0;
--
error compiling committee.c: too many arguments to function
^ permalink raw reply [flat|nested] 8+ messages in thread* Re: [Qemu-devel] [PATCH] apic: test tsc deadline timer
2011-10-09 10:24 ` Avi Kivity
@ 2011-10-09 15:14 ` Liu, Jinsong
2011-10-09 16:02 ` [Qemu-devel] [PATCH] Update README example Liu, Jinsong
2011-10-09 15:32 ` [Qemu-devel] [PATCH] apic: test tsc deadline timer Liu, Jinsong
1 sibling, 1 reply; 8+ messages in thread
From: Liu, Jinsong @ 2011-10-09 15:14 UTC (permalink / raw)
To: Avi Kivity; +Cc: Marcelo Tosatti, qemu-devel@nongnu.org, kvm@vger.kernel.org
Avi Kivity wrote:
> On 10/09/2011 12:05 PM, Liu, Jinsong wrote:
>> Marcelo,
>>
>> I add test case for tsc deadline timer
>> https://github.com/avikivity/kvm-unit-tests, as attached.
>>
>> According to the kvm-unit-tests README, I try to run
>> qemu-system-x86_64 -device testdev,chardev=testlog -chardev
>> file,id=testlog,path=apic.out -kernel ./x86/apic.flat but get
>> nothing from the testlog 'apic.out' (BTW, at kvm side I did observe
>> the expected tsc deadline timer action)
>>
>> I also try to run the README example
>> qemu-system-x86_64 -device testdev,chardev=testlog -chardev
>> file,id=testlog,path=msr.out -kernel ./x86/msr.flat but still get
>> nothing from 'msr.out'
>>
>> Do I miss something? how can I get test log?
>
> This was recently changed, it now outputs to the serial port.
>
> Try
>
>
> qemu-system-x86_64 -device testdev,chardev=testlog -chardev
> file,id=testlog,path=apic.out -serial stdio -kernel ./x86/apic.flat
>
>
Thanks Avi, I got test log as:
enabling apic
paging enabled
cr0 = 80010011
cr3 = 7fff000
cr4 = 20
apic version: 50014
apic existence: PASS
enabling apic
x2apic not detected
self ipi: PASS
ioapic interrupt: PASS
ioapic simultaneous interrupt: PASS
tsc deadline timer: PASS
tsc deadline timer enabled
summary: 5 tests, 0 failures
>> +
>> +static void start_tsc_deadline_timer(void)
>> +{
>> + unsigned a, d;
>> +
>> + handle_irq(TSC_DEADLINE_TIMER_VECTOR, tsc_deadline_timer_isr);
>> + irq_enable(); +
>> + asm ("rdmsr" : "=a"(a), "=d"(d) : "c"(MSR_IA32_TSC));
>> + asm ("wrmsr" : : "a"(a), "d"(d), "c"(MSR_IA32_TSCDEADLINE)); +
>> asm volatile ("nop"); + report("tsc deadline timer", tdt_count ==
>> 1); +}
>
> Please use rdmsr()/wrmsr() from processor.h.
>
Updated.
Thanks,
Jinsong
>> +
>> +static int enable_tsc_deadline_timer(void)
>> +{
>> + unsigned a, b, c, d;
>> + uint32_t lvtt;
>> +
>> + asm ("cpuid" : "=a"(a), "=b"(b), "=c"(c), "=d"(d) : "0"(1));
>
> cpuid()...
>
>> +
>> + if (c& (1<< 24)) {
>> + lvtt = TSC_DEADLINE_TIMER_MODE | TSC_DEADLINE_TIMER_VECTOR;
>> + apic_write(APIC_LVTT, lvtt);
>> + start_tsc_deadline_timer();
>> + return 1;
>> + } else {
>> + return 0;
>> + }
>> +}
>> +
>> +static void test_tsc_deadline_timer(void)
>> +{
>> + if(enable_tsc_deadline_timer()) {
>> + printf("tsc deadline timer enabled\n");
>> + } else {
>> + printf("tsc deadline timer not detected\n"); + }
>> +}
>> +
>> #define MSR_APIC_BASE 0x0000001b
>>
>> void test_enable_x2apic(void)
>> @@ -291,6 +342,8 @@ int main()
>> test_sti_nmi();
>> test_multiple_nmi();
>>
>> + test_tsc_deadline_timer();
>> +
>> printf("\nsummary: %d tests, %d failures\n", g_tests, g_fail);
>>
>> return g_fail != 0;
^ permalink raw reply [flat|nested] 8+ messages in thread* [Qemu-devel] [PATCH] Update README example
2011-10-09 15:14 ` Liu, Jinsong
@ 2011-10-09 16:02 ` Liu, Jinsong
2011-10-10 10:29 ` Avi Kivity
0 siblings, 1 reply; 8+ messages in thread
From: Liu, Jinsong @ 2011-10-09 16:02 UTC (permalink / raw)
To: Avi Kivity; +Cc: Marcelo Tosatti, qemu-devel@nongnu.org, kvm@vger.kernel.org
[-- Attachment #1: Type: text/plain, Size: 1763 bytes --]
>>
>> This was recently changed, it now outputs to the serial port.
>>
>> Try
>>
>>
>> qemu-system-x86_64 -device testdev,chardev=testlog -chardev
>> file,id=testlog,path=apic.out -serial stdio -kernel ./x86/apic.flat
>>
>>
>
> Thanks Avi, I got test log as:
>
> enabling apic
> paging enabled
> cr0 = 80010011
> cr3 = 7fff000
> cr4 = 20
> apic version: 50014
> apic existence: PASS
> enabling apic
> x2apic not detected
> self ipi: PASS
> ioapic interrupt: PASS
> ioapic simultaneous interrupt: PASS
> tsc deadline timer: PASS
> tsc deadline timer enabled
>
> summary: 5 tests, 0 failures
>
BTW, it better update kvm-unit-tests README.
Thanks,
Jinsong
=====================
>From ba2da790502f0ce2fb6dba9fc848cba041d051f8 Mon Sep 17 00:00:00 2001
From: Liu, Jinsong <jinsong.liu@intel.com>
Date: Sun, 9 Oct 2011 23:35:48 +0800
Subject: [PATCH] Update README example
Signed-off-by: Liu, Jinsong <jinsong.liu@intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
---
README | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/README b/README
index 9c0c518..4ceb869 100644
--- a/README
+++ b/README
@@ -10,8 +10,8 @@ To create the tests' images just type 'make' in this directory.
Tests' images created in ./<ARCH>/*.flat
An example of a test invocation:
-qemu-system-x86_64 -device testdev,chardev=testlog -chardev file,id=testlog,path=msr.out -kernel ./x86/msr.flat
-This invocation runs the msr test case. The test output is in file msr.out.
+qemu-system-x86_64 -device testdev,chardev=testlog -chardev file,id=testlog,path=msr.out -serial stdio -kernel ./x86/msr.flat
+This invocation runs the msr test case. The test outputs to stdio.
--
1.6.5.6
[-- Attachment #2: update-kvm-unit-tests-README.patch --]
[-- Type: application/octet-stream, Size: 1010 bytes --]
From ba2da790502f0ce2fb6dba9fc848cba041d051f8 Mon Sep 17 00:00:00 2001
From: Liu, Jinsong <jinsong.liu@intel.com>
Date: Sun, 9 Oct 2011 23:35:48 +0800
Subject: [PATCH] Update README example
Signed-off-by: Liu, Jinsong <jinsong.liu@intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
---
README | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/README b/README
index 9c0c518..4ceb869 100644
--- a/README
+++ b/README
@@ -10,8 +10,8 @@ To create the tests' images just type 'make' in this directory.
Tests' images created in ./<ARCH>/*.flat
An example of a test invocation:
-qemu-system-x86_64 -device testdev,chardev=testlog -chardev file,id=testlog,path=msr.out -kernel ./x86/msr.flat
-This invocation runs the msr test case. The test output is in file msr.out.
+qemu-system-x86_64 -device testdev,chardev=testlog -chardev file,id=testlog,path=msr.out -serial stdio -kernel ./x86/msr.flat
+This invocation runs the msr test case. The test outputs to stdio.
--
1.6.5.6
^ permalink raw reply related [flat|nested] 8+ messages in thread
* Re: [Qemu-devel] [PATCH] apic: test tsc deadline timer
2011-10-09 10:24 ` Avi Kivity
2011-10-09 15:14 ` Liu, Jinsong
@ 2011-10-09 15:32 ` Liu, Jinsong
2011-10-10 10:30 ` Avi Kivity
1 sibling, 1 reply; 8+ messages in thread
From: Liu, Jinsong @ 2011-10-09 15:32 UTC (permalink / raw)
To: Avi Kivity; +Cc: Marcelo Tosatti, qemu-devel@nongnu.org, kvm@vger.kernel.org
[-- Attachment #1: Type: text/plain, Size: 2329 bytes --]
Updated test case for kvm tsc deadline timer https://github.com/avikivity/kvm-unit-tests, as attached.
Thanks,
Jinsong
=================
>From 2b476cf741b36da5df35cf2e8f7f9562e8245fcd Mon Sep 17 00:00:00 2001
From: Liu, Jinsong <jinsong.liu@intel.com>
Date: Sun, 9 Oct 2011 22:45:39 +0800
Subject: [PATCH] apic: test tsc deadline timer
Test tsc deadline timer: detect tsc deadline timer support by CPUID,
enable tsc deadline timer mode by MMIO, then start tsc deadline timer by WRMSR.
Signed-off-by: Liu, Jinsong <jinsong.liu@intel.com>
---
x86/apic.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 47 insertions(+), 0 deletions(-)
diff --git a/x86/apic.c b/x86/apic.c
index c51e6a5..2725b9a 100644
--- a/x86/apic.c
+++ b/x86/apic.c
@@ -25,6 +25,51 @@ static void test_lapic_existence(void)
report("apic existence", (u16)lvr == 0x14);
}
+#define TSC_DEADLINE_TIMER_MODE (2 << 17)
+#define TSC_DEADLINE_TIMER_VECTOR 0xef
+#define MSR_IA32_TSC 0x00000010
+#define MSR_IA32_TSCDEADLINE 0x000006e0
+
+static int tdt_count;
+
+static void tsc_deadline_timer_isr(isr_regs_t *regs)
+{
+ ++tdt_count;
+}
+
+static void start_tsc_deadline_timer(void)
+{
+ handle_irq(TSC_DEADLINE_TIMER_VECTOR, tsc_deadline_timer_isr);
+ irq_enable();
+
+ wrmsr(MSR_IA32_TSCDEADLINE, rdmsr(MSR_IA32_TSC));
+ asm volatile ("nop");
+ report("tsc deadline timer", tdt_count == 1);
+}
+
+static int enable_tsc_deadline_timer(void)
+{
+ uint32_t lvtt;
+
+ if (cpuid(1).c & (1 << 24)) {
+ lvtt = TSC_DEADLINE_TIMER_MODE | TSC_DEADLINE_TIMER_VECTOR;
+ apic_write(APIC_LVTT, lvtt);
+ start_tsc_deadline_timer();
+ return 1;
+ } else {
+ return 0;
+ }
+}
+
+static void test_tsc_deadline_timer(void)
+{
+ if(enable_tsc_deadline_timer()) {
+ printf("tsc deadline timer enabled\n");
+ } else {
+ printf("tsc deadline timer not detected\n");
+ }
+}
+
#define MSR_APIC_BASE 0x0000001b
void test_enable_x2apic(void)
@@ -291,6 +336,8 @@ int main()
test_sti_nmi();
test_multiple_nmi();
+ test_tsc_deadline_timer();
+
printf("\nsummary: %d tests, %d failures\n", g_tests, g_fail);
return g_fail != 0;
--
1.6.5.6
[-- Attachment #2: test-tsc-deadline-timer.patch --]
[-- Type: application/octet-stream, Size: 2104 bytes --]
From 2b476cf741b36da5df35cf2e8f7f9562e8245fcd Mon Sep 17 00:00:00 2001
From: Liu, Jinsong <jinsong.liu@intel.com>
Date: Sun, 9 Oct 2011 22:45:39 +0800
Subject: [PATCH] apic: test tsc deadline timer
Test tsc deadline timer: detect tsc deadline timer support by CPUID,
enable tsc deadline timer mode by MMIO, then start tsc deadline timer by WRMSR.
Signed-off-by: Liu, Jinsong <jinsong.liu@intel.com>
---
x86/apic.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 47 insertions(+), 0 deletions(-)
diff --git a/x86/apic.c b/x86/apic.c
index c51e6a5..2725b9a 100644
--- a/x86/apic.c
+++ b/x86/apic.c
@@ -25,6 +25,51 @@ static void test_lapic_existence(void)
report("apic existence", (u16)lvr == 0x14);
}
+#define TSC_DEADLINE_TIMER_MODE (2 << 17)
+#define TSC_DEADLINE_TIMER_VECTOR 0xef
+#define MSR_IA32_TSC 0x00000010
+#define MSR_IA32_TSCDEADLINE 0x000006e0
+
+static int tdt_count;
+
+static void tsc_deadline_timer_isr(isr_regs_t *regs)
+{
+ ++tdt_count;
+}
+
+static void start_tsc_deadline_timer(void)
+{
+ handle_irq(TSC_DEADLINE_TIMER_VECTOR, tsc_deadline_timer_isr);
+ irq_enable();
+
+ wrmsr(MSR_IA32_TSCDEADLINE, rdmsr(MSR_IA32_TSC));
+ asm volatile ("nop");
+ report("tsc deadline timer", tdt_count == 1);
+}
+
+static int enable_tsc_deadline_timer(void)
+{
+ uint32_t lvtt;
+
+ if (cpuid(1).c & (1 << 24)) {
+ lvtt = TSC_DEADLINE_TIMER_MODE | TSC_DEADLINE_TIMER_VECTOR;
+ apic_write(APIC_LVTT, lvtt);
+ start_tsc_deadline_timer();
+ return 1;
+ } else {
+ return 0;
+ }
+}
+
+static void test_tsc_deadline_timer(void)
+{
+ if(enable_tsc_deadline_timer()) {
+ printf("tsc deadline timer enabled\n");
+ } else {
+ printf("tsc deadline timer not detected\n");
+ }
+}
+
#define MSR_APIC_BASE 0x0000001b
void test_enable_x2apic(void)
@@ -291,6 +336,8 @@ int main()
test_sti_nmi();
test_multiple_nmi();
+ test_tsc_deadline_timer();
+
printf("\nsummary: %d tests, %d failures\n", g_tests, g_fail);
return g_fail != 0;
--
1.6.5.6
^ permalink raw reply related [flat|nested] 8+ messages in thread* Re: [Qemu-devel] [PATCH] apic: test tsc deadline timer
2011-10-09 15:32 ` [Qemu-devel] [PATCH] apic: test tsc deadline timer Liu, Jinsong
@ 2011-10-10 10:30 ` Avi Kivity
2011-10-13 7:56 ` Liu, Jinsong
0 siblings, 1 reply; 8+ messages in thread
From: Avi Kivity @ 2011-10-10 10:30 UTC (permalink / raw)
To: Liu, Jinsong; +Cc: Marcelo Tosatti, qemu-devel@nongnu.org, kvm@vger.kernel.org
On 10/09/2011 05:32 PM, Liu, Jinsong wrote:
> Updated test case for kvm tsc deadline timer https://github.com/avikivity/kvm-unit-tests, as attached.
>
Applied, thanks.
--
error compiling committee.c: too many arguments to function
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [Qemu-devel] [PATCH] apic: test tsc deadline timer
2011-10-10 10:30 ` Avi Kivity
@ 2011-10-13 7:56 ` Liu, Jinsong
0 siblings, 0 replies; 8+ messages in thread
From: Liu, Jinsong @ 2011-10-13 7:56 UTC (permalink / raw)
To: Avi Kivity; +Cc: Marcelo Tosatti, qemu-devel@nongnu.org, kvm@vger.kernel.org
Avi Kivity wrote:
> On 10/09/2011 05:32 PM, Liu, Jinsong wrote:
>> Updated test case for kvm tsc deadline timer
>> https://github.com/avikivity/kvm-unit-tests, as attached.
>>
>
> Applied, thanks.
Which tree? I didn't find it at git://github.com/avikivity/kvm-unit-tests.git
Thanks,
Jinsong
^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2011-10-13 7:57 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2011-10-09 10:05 [Qemu-devel] [PATCH] apic: test tsc deadline timer Liu, Jinsong
2011-10-09 10:24 ` Avi Kivity
2011-10-09 15:14 ` Liu, Jinsong
2011-10-09 16:02 ` [Qemu-devel] [PATCH] Update README example Liu, Jinsong
2011-10-10 10:29 ` Avi Kivity
2011-10-09 15:32 ` [Qemu-devel] [PATCH] apic: test tsc deadline timer Liu, Jinsong
2011-10-10 10:30 ` Avi Kivity
2011-10-13 7:56 ` Liu, Jinsong
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