Re: [PATCH] test: Add emulator test for iret instruction
On 07/28/2010 02:22 AM, Mohammed Gamal wrote:
This adds a unit test for real mode emulation of the iret instruction
Signed-off-by: Mohammed Gamal
---
kvm/test/x86/realmode.c | 23 +++
1 files changed, 23 insertions(+), 0 deletions(-)
diff --git a/kvm/test/x86/realmode.c b/kvm/test/x86/realmode.c
index bd79348..16716cc 100644
--- a/kvm/test/x86/realmode.c
+++ b/kvm/test/x86/realmode.c
@@ -865,6 +865,28 @@ void test_pusha_popa()
print_serial("Pusha/Popa Test2: PASS\n");
}
+void test_iret()
+{
+ struct regs inregs = { 0 }, outregs;
+
+ MK_INSN(iret, "pushf\n\t"
+ "pushl %cs\n\t"
+ "call 1f\n\t" /* a near call will push eip onto the stack
*/
+ "jmp 2f\n\t"
+ "1:iret\n\t"
+ "2:\n\t"
+);
+
+ exec_in_big_real_mode(&inregs,&outregs,
+ insn_iret,
+ insn_iret_end - insn_iret);
+
+ if (!regs_equal(&inregs,&outregs, 0))
+ print_serial("iret Test 1: FAIL\n");
+ else
+ print_serial("iret Test 1: PASS\n");
+}
+
This tests 32-bit iret, please test 16-bit iret as well (pushfw, pushw
cs, callw, iretw).
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
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Re: [PATCH] test: Add emulator test for iret instruction
On 07/28/2010 07:21 AM, Avi Kivity wrote:
On 07/28/2010 02:22 AM, Mohammed Gamal wrote:
This adds a unit test for real mode emulation of the iret instruction
Signed-off-by: Mohammed Gamal
---
kvm/test/x86/realmode.c | 23 +++
1 files changed, 23 insertions(+), 0 deletions(-)
diff --git a/kvm/test/x86/realmode.c b/kvm/test/x86/realmode.c
index bd79348..16716cc 100644
--- a/kvm/test/x86/realmode.c
+++ b/kvm/test/x86/realmode.c
@@ -865,6 +865,28 @@ void test_pusha_popa()
print_serial("Pusha/Popa Test2: PASS\n");
}
+void test_iret()
+{
+struct regs inregs = { 0 }, outregs;
+
+MK_INSN(iret, "pushf\n\t"
+ "pushl %cs\n\t"
+ "call 1f\n\t" /* a near call will push eip onto the
stack */
+ "jmp 2f\n\t"
+ "1:iret\n\t"
+ "2:\n\t"
+ );
+
+exec_in_big_real_mode(&inregs,&outregs,
+ insn_iret,
+ insn_iret_end - insn_iret);
+
+if (!regs_equal(&inregs,&outregs, 0))
+print_serial("iret Test 1: FAIL\n");
+else
+print_serial("iret Test 1: PASS\n");
+}
+
This tests 32-bit iret, please test 16-bit iret as well (pushfw, pushw
cs, callw, iretw).
Also add tests that set bits that must be zero (and checks that IRET
clears them in eflags) or clears bit 1 and sees that IRET sets it.
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
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Re: [PATCH] test: Add emulator test for iret instruction
On Wed, Jul 28, 2010 at 12:39:01PM +0300, Mohammed Gamal wrote:
> This adds a unit test for real mode emulation of the iret instruction
>
> Signed-off-by: Mohammed Gamal
>
> ---
> Changes from v1:
> - Added test for 16-bit iret
> - Added tests for returned eflags
> ---
> kvm/test/x86/realmode.c | 79
> +++
> 1 files changed, 79 insertions(+), 0 deletions(-)
>
> diff --git a/kvm/test/x86/realmode.c b/kvm/test/x86/realmode.c
> index bd79348..74456c3 100644
> --- a/kvm/test/x86/realmode.c
> +++ b/kvm/test/x86/realmode.c
> @@ -865,6 +865,84 @@ void test_pusha_popa()
> print_serial("Pusha/Popa Test2: PASS\n");
> }
>
> +void test_iret()
> +{
> + struct regs inregs = { 0 }, outregs;
> +
> + MK_INSN(iret32, "pushf\n\t"
> + "pushl %cs\n\t"
> + "call 1f\n\t" /* a near call will push eip onto the
> stack */
> + "jmp 2f\n\t"
> + "1: iret\n\t"
> + "2:\n\t"
> + );
> +
> + MK_INSN(iret16, "pushfw\n\t"
> + "pushw %cs\n\t"
> + "callw 1f\n\t"
> + "jmp 2f\n\t"
> + "1: iretw\n\t"
> + "2:\n\t");
Unless iret causes a task switch, it will not cause an exit.
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Re: [PATCH] test: Add emulator test for iret instruction
On Wed, Jul 28, 2010 at 10:55 PM, Marcelo Tosatti wrote:
> On Wed, Jul 28, 2010 at 12:39:01PM +0300, Mohammed Gamal wrote:
>> This adds a unit test for real mode emulation of the iret instruction
>>
>> Signed-off-by: Mohammed Gamal
>>
>> ---
>> Changes from v1:
>> - Added test for 16-bit iret
>> - Added tests for returned eflags
>> ---
>> kvm/test/x86/realmode.c | 79
>> +++
>> 1 files changed, 79 insertions(+), 0 deletions(-)
>>
>> diff --git a/kvm/test/x86/realmode.c b/kvm/test/x86/realmode.c
>> index bd79348..74456c3 100644
>> --- a/kvm/test/x86/realmode.c
>> +++ b/kvm/test/x86/realmode.c
>> @@ -865,6 +865,84 @@ void test_pusha_popa()
>> print_serial("Pusha/Popa Test2: PASS\n");
>> }
>>
>> +void test_iret()
>> +{
>> + struct regs inregs = { 0 }, outregs;
>> +
>> + MK_INSN(iret32, "pushf\n\t"
>> + "pushl %cs\n\t"
>> + "call 1f\n\t" /* a near call will push eip onto the
>> stack */
>> + "jmp 2f\n\t"
>> + "1: iret\n\t"
>> + "2:\n\t"
>> + );
>> +
>> + MK_INSN(iret16, "pushfw\n\t"
>> + "pushw %cs\n\t"
>> + "callw 1f\n\t"
>> + "jmp 2f\n\t"
>> + "1: iretw\n\t"
>> + "2:\n\t");
>
> Unless iret causes a task switch, it will not cause an exit.
>
>
The test covers only the real mode case, we won't have a task switch there, no?
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Re: [PATCH] test: Add emulator test for iret instruction
On Wed, Jul 28, 2010 at 11:28:05PM +0300, Mohammed Gamal wrote:
> On Wed, Jul 28, 2010 at 10:55 PM, Marcelo Tosatti wrote:
> > On Wed, Jul 28, 2010 at 12:39:01PM +0300, Mohammed Gamal wrote:
> >> This adds a unit test for real mode emulation of the iret instruction
> >>
> >> Signed-off-by: Mohammed Gamal
> >>
> >> ---
> >> Changes from v1:
> >> - Added test for 16-bit iret
> >> - Added tests for returned eflags
> >> ---
> >> kvm/test/x86/realmode.c | 79
> >> +++
> >> 1 files changed, 79 insertions(+), 0 deletions(-)
> >>
> >> diff --git a/kvm/test/x86/realmode.c b/kvm/test/x86/realmode.c
> >> index bd79348..74456c3 100644
> >> --- a/kvm/test/x86/realmode.c
> >> +++ b/kvm/test/x86/realmode.c
> >> @@ -865,6 +865,84 @@ void test_pusha_popa()
> >> print_serial("Pusha/Popa Test2: PASS\n");
> >> }
> >>
> >> +void test_iret()
> >> +{
> >> + struct regs inregs = { 0 }, outregs;
> >> +
> >> + MK_INSN(iret32, "pushf\n\t"
> >> + "pushl %cs\n\t"
> >> + "call 1f\n\t" /* a near call will push eip onto the
> >> stack */
> >> + "jmp 2f\n\t"
> >> + "1: iret\n\t"
> >> + "2:\n\t"
> >> + );
> >> +
> >> + MK_INSN(iret16, "pushfw\n\t"
> >> + "pushw %cs\n\t"
> >> + "callw 1f\n\t"
> >> + "jmp 2f\n\t"
> >> + "1: iretw\n\t"
> >> + "2:\n\t");
> >
> > Unless iret causes a task switch, it will not cause an exit.
> >
> >
> The test covers only the real mode case, we won't have a task switch there,
> no?
No. And there is no vmexit for iret, so it does not go through the
emulator.
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Re: [PATCH] test: Add emulator test for iret instruction
On Wed, Jul 28, 2010 at 11:32 PM, Marcelo Tosatti wrote:
> On Wed, Jul 28, 2010 at 11:28:05PM +0300, Mohammed Gamal wrote:
>> On Wed, Jul 28, 2010 at 10:55 PM, Marcelo Tosatti
>> wrote:
>> > On Wed, Jul 28, 2010 at 12:39:01PM +0300, Mohammed Gamal wrote:
>> >> This adds a unit test for real mode emulation of the iret instruction
>> >>
>> >> Signed-off-by: Mohammed Gamal
>> >>
>> >> ---
>> >> Changes from v1:
>> >> - Added test for 16-bit iret
>> >> - Added tests for returned eflags
>> >> ---
>> >> kvm/test/x86/realmode.c | 79
>> >> +++
>> >> 1 files changed, 79 insertions(+), 0 deletions(-)
>> >>
>> >> diff --git a/kvm/test/x86/realmode.c b/kvm/test/x86/realmode.c
>> >> index bd79348..74456c3 100644
>> >> --- a/kvm/test/x86/realmode.c
>> >> +++ b/kvm/test/x86/realmode.c
>> >> @@ -865,6 +865,84 @@ void test_pusha_popa()
>> >> print_serial("Pusha/Popa Test2: PASS\n");
>> >> }
>> >>
>> >> +void test_iret()
>> >> +{
>> >> + struct regs inregs = { 0 }, outregs;
>> >> +
>> >> + MK_INSN(iret32, "pushf\n\t"
>> >> + "pushl %cs\n\t"
>> >> + "call 1f\n\t" /* a near call will push eip onto the
>> >> stack */
>> >> + "jmp 2f\n\t"
>> >> + "1: iret\n\t"
>> >> + "2:\n\t"
>> >> + );
>> >> +
>> >> + MK_INSN(iret16, "pushfw\n\t"
>> >> + "pushw %cs\n\t"
>> >> + "callw 1f\n\t"
>> >> + "jmp 2f\n\t"
>> >> + "1: iretw\n\t"
>> >> + "2:\n\t");
>> >
>> > Unless iret causes a task switch, it will not cause an exit.
>> >
>> >
>> The test covers only the real mode case, we won't have a task switch there,
>> no?
>
> No. And there is no vmexit for iret, so it does not go through the
> emulator.
>
I'm pretty sure the iret instruction went through the emulator. I saw
the instruction opcode (0xcf) being in ftrace.
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Re: [PATCH] test: Add emulator test for iret instruction
On Thu, Jul 29, 2010 at 2:13 AM, Mohammed Gamal wrote:
> On Wed, Jul 28, 2010 at 11:56 PM, Marcelo Tosatti wrote:
>> On Wed, Jul 28, 2010 at 11:36:16PM +0300, Mohammed Gamal wrote:
>>> On Wed, Jul 28, 2010 at 11:32 PM, Marcelo Tosatti
>>> wrote:
>>> > On Wed, Jul 28, 2010 at 11:28:05PM +0300, Mohammed Gamal wrote:
>>> >> On Wed, Jul 28, 2010 at 10:55 PM, Marcelo Tosatti
>>> >> wrote:
>>> >> > On Wed, Jul 28, 2010 at 12:39:01PM +0300, Mohammed Gamal wrote:
>>> >> >> This adds a unit test for real mode emulation of the iret instruction
>>> >> >>
>>> >> >> Signed-off-by: Mohammed Gamal
>>> >> >>
>>> >> >> ---
>>> >> >> Changes from v1:
>>> >> >> - Added test for 16-bit iret
>>> >> >> - Added tests for returned eflags
>>> >> >> ---
>>> >> >> kvm/test/x86/realmode.c | 79
>>> >> >> +++
>>> >> >> 1 files changed, 79 insertions(+), 0 deletions(-)
>>> >> >>
>>> >> >> diff --git a/kvm/test/x86/realmode.c b/kvm/test/x86/realmode.c
>>> >> >> index bd79348..74456c3 100644
>>> >> >> --- a/kvm/test/x86/realmode.c
>>> >> >> +++ b/kvm/test/x86/realmode.c
>>> >> >> @@ -865,6 +865,84 @@ void test_pusha_popa()
>>> >> >> print_serial("Pusha/Popa Test2: PASS\n");
>>> >> >> }
>>> >> >>
>>> >> >> +void test_iret()
>>> >> >> +{
>>> >> >> + struct regs inregs = { 0 }, outregs;
>>> >> >> +
>>> >> >> + MK_INSN(iret32, "pushf\n\t"
>>> >> >> + "pushl %cs\n\t"
>>> >> >> + "call 1f\n\t" /* a near call will push eip onto
>>> >> >> the stack */
>>> >> >> + "jmp 2f\n\t"
>>> >> >> + "1: iret\n\t"
>>> >> >> + "2:\n\t"
>>> >> >> + );
>>> >> >> +
>>> >> >> + MK_INSN(iret16, "pushfw\n\t"
>>> >> >> + "pushw %cs\n\t"
>>> >> >> + "callw 1f\n\t"
>>> >> >> + "jmp 2f\n\t"
>>> >> >> + "1: iretw\n\t"
>>> >> >> + "2:\n\t");
>>> >> >
>>> >> > Unless iret causes a task switch, it will not cause an exit.
>>> >> >
>>> >> >
>>> >> The test covers only the real mode case, we won't have a task switch
>>> >> there, no?
>>> >
>>> > No. And there is no vmexit for iret, so it does not go through the
>>> > emulator.
>>> >
>>> I'm pretty sure the iret instruction went through the emulator. I saw
>>> the instruction opcode (0xcf) being in ftrace.
>>
>> Can you confirm that please? I don't see it here.
>>
>
Sure, here is the ftrace output corresponding to the test instructions
>From the first test
qemu-system-x86-12850 [001] 5167.509842: kvm_emulate_insn: 0:4200: 66 9c (real)
qemu-system-x86-12850 [001] 5167.509844: kvm_emulate_insn: 0:4202:
66 0e (real)
qemu-system-x86-12850 [001] 5167.509847: kvm_emulate_insn: 0:4204:
66 e8 02 00 00 00 (real)
qemu-system-x86-12850 [001] 5167.509849: kvm_emulate_insn: 0:420c:
66 cf (real)
qemu-system-x86-12850 [001] 5167.509852: kvm_emulate_insn: 0:420a:
eb 02 (real)
Second test:
qemu-system-x86-12850 [001] 5167.509998: kvm_emulate_insn: 0:4200: 9c (real)
qemu-system-x86-12850 [001] 5167.51: kvm_emulate_insn: 0:4201: 0e (real)
qemu-system-x86-12850 [001] 5167.510002: kvm_emulate_insn: 0:4202:
e8 02 00 (real)
qemu-system-x86-12850 [001] 5167.510004: kvm_emulate_insn: 0:4207: cf (real)
qemu-system-x86-12850 [001] 5167.510006: kvm_emulate_insn: 0:4205:
eb 01 (real)
Third test:
<...>-12850 [001] 5167.510162: kvm_emulate_insn: 0:4200: 66 9c (real)
<...>-12850 [001] 5167.510164: kvm_emulate_insn: 0:4202:
66 58 (real)
<...>-12850 [001] 5167.510166: kvm_emulate_insn: 0:4204:
66 83 e0 fd (real)
<...>-12850 [001] 5167.510168: kvm_emulate_insn: 0:4208:
66 0d 28 80 c0 ff (real)
<...>-12850 [001] 5167.510170: kvm_emulate_insn: 0:420e:
66 50 (real)
<...>-12850 [001] 5167.510172: kvm_emulate_insn: 0:4210:
66 0e (real)
<...>-12850 [001] 5167.510174: kvm_emulate_insn: 0:4212:
66 e8 02 00 00 00 (real)
<...>-12850 [001] 5167.510176: kvm_emulate_insn: 0:421a:
66 cf (real)
<...>-12850 [001] 5167.510179: kvm_emulate_insn: 0:4218:
eb 02 (real)
Fourth test:
qemu-system-x86-12850 [001] 5167.510302: kvm_emulate_insn: 0:4200: 9c (real)
qemu-system-x86-12850 [001] 5167.510304: kvm_emulate_insn: 0:4201: 58 (real)
qemu-system-x86-12850 [001] 5167.510306: kvm_emulate_insn: 0:4202:
83 e0 fd (real)
qemu-system-x86-12850 [001] 5167.510308: kvm_emulate_insn: 0:4205:
0d 28 80 (real)
qemu-system-x86-12850 [001] 5167.510310: kvm_emulate_insn: 0:4208: 50 (real)
qemu-system-x86-12850 [001] 5167.510312: kvm_emulate_insn: 0:4209: 0e (real)
qemu-system-x86-12850 [001] 5167.510313: kvm_emulate_insn: 0:420a:
e8 02 00 (real)
qemu-system-x86-12850 [001] 5167.510315: kvm_emulate_insn: 0:420f: cf (real)
qemu-system-x86-12850 [001] 5167.510318: kvm_emulate_insn: 0:420d:
eb 01 (real)
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Re: [PATCH] test: Add emulator test for iret instruction
On Thu, Jul 29, 2010 at 2:16 AM, Mohammed Gamal wrote:
> On Thu, Jul 29, 2010 at 2:13 AM, Mohammed Gamal wrote:
>> On Wed, Jul 28, 2010 at 11:56 PM, Marcelo Tosatti
>> wrote:
>>> On Wed, Jul 28, 2010 at 11:36:16PM +0300, Mohammed Gamal wrote:
On Wed, Jul 28, 2010 at 11:32 PM, Marcelo Tosatti
wrote:
> On Wed, Jul 28, 2010 at 11:28:05PM +0300, Mohammed Gamal wrote:
>> On Wed, Jul 28, 2010 at 10:55 PM, Marcelo Tosatti
>> wrote:
>> > On Wed, Jul 28, 2010 at 12:39:01PM +0300, Mohammed Gamal wrote:
>> >> This adds a unit test for real mode emulation of the iret instruction
>> >>
>> >> Signed-off-by: Mohammed Gamal
>> >>
>> >> ---
>> >> Changes from v1:
>> >> - Added test for 16-bit iret
>> >> - Added tests for returned eflags
>> >> ---
>> >> kvm/test/x86/realmode.c | 79
>> >> +++
>> >> 1 files changed, 79 insertions(+), 0 deletions(-)
>> >>
>> >> diff --git a/kvm/test/x86/realmode.c b/kvm/test/x86/realmode.c
>> >> index bd79348..74456c3 100644
>> >> --- a/kvm/test/x86/realmode.c
>> >> +++ b/kvm/test/x86/realmode.c
>> >> @@ -865,6 +865,84 @@ void test_pusha_popa()
>> >> print_serial("Pusha/Popa Test2: PASS\n");
>> >> }
>> >>
>> >> +void test_iret()
>> >> +{
>> >> + struct regs inregs = { 0 }, outregs;
>> >> +
>> >> + MK_INSN(iret32, "pushf\n\t"
>> >> + "pushl %cs\n\t"
>> >> + "call 1f\n\t" /* a near call will push eip
>> >> onto the stack */
>> >> + "jmp 2f\n\t"
>> >> + "1: iret\n\t"
>> >> + "2:\n\t"
>> >> + );
>> >> +
>> >> + MK_INSN(iret16, "pushfw\n\t"
>> >> + "pushw %cs\n\t"
>> >> + "callw 1f\n\t"
>> >> + "jmp 2f\n\t"
>> >> + "1: iretw\n\t"
>> >> + "2:\n\t");
>> >
>> > Unless iret causes a task switch, it will not cause an exit.
>> >
>> >
>> The test covers only the real mode case, we won't have a task switch
>> there, no?
>
> No. And there is no vmexit for iret, so it does not go through the
> emulator.
>
I'm pretty sure the iret instruction went through the emulator. I saw
the instruction opcode (0xcf) being in ftrace.
>>>
>>> Can you confirm that please? I don't see it here.
>>>
>>
> Sure, here is the ftrace output corresponding to the test instructions
>
> From the first test
> qemu-system-x86-12850 [001] 5167.509842: kvm_emulate_insn: 0:4200: 66 9c
> (real)
> qemu-system-x86-12850 [001] 5167.509844: kvm_emulate_insn: 0:4202:
> 66 0e (real)
> qemu-system-x86-12850 [001] 5167.509847: kvm_emulate_insn: 0:4204:
> 66 e8 02 00 00 00 (real)
> qemu-system-x86-12850 [001] 5167.509849: kvm_emulate_insn: 0:420c:
> 66 cf (real)
> qemu-system-x86-12850 [001] 5167.509852: kvm_emulate_insn: 0:420a:
> eb 02 (real)
>
> Second test:
> qemu-system-x86-12850 [001] 5167.509998: kvm_emulate_insn: 0:4200: 9c (real)
> qemu-system-x86-12850 [001] 5167.51: kvm_emulate_insn: 0:4201: 0e (real)
> qemu-system-x86-12850 [001] 5167.510002: kvm_emulate_insn: 0:4202:
> e8 02 00 (real)
> qemu-system-x86-12850 [001] 5167.510004: kvm_emulate_insn: 0:4207: cf
> (real)
> qemu-system-x86-12850 [001] 5167.510006: kvm_emulate_insn: 0:4205:
> eb 01 (real)
>
> Third test:
> <...>-12850 [001] 5167.510162: kvm_emulate_insn: 0:4200: 66 9c
> (real)
> <...>-12850 [001] 5167.510164: kvm_emulate_insn: 0:4202:
> 66 58 (real)
> <...>-12850 [001] 5167.510166: kvm_emulate_insn: 0:4204:
> 66 83 e0 fd (real)
> <...>-12850 [001] 5167.510168: kvm_emulate_insn: 0:4208:
> 66 0d 28 80 c0 ff (real)
> <...>-12850 [001] 5167.510170: kvm_emulate_insn: 0:420e:
> 66 50 (real)
> <...>-12850 [001] 5167.510172: kvm_emulate_insn: 0:4210:
> 66 0e (real)
> <...>-12850 [001] 5167.510174: kvm_emulate_insn: 0:4212:
> 66 e8 02 00 00 00 (real)
> <...>-12850 [001] 5167.510176: kvm_emulate_insn: 0:421a:
> 66 cf (real)
> <...>-12850 [001] 5167.510179: kvm_emulate_insn: 0:4218:
> eb 02 (real)
>
>
> Fourth test:
> qemu-system-x86-12850 [001] 5167.510302: kvm_emulate_insn: 0:4200: 9c
> (real)
> qemu-system-x86-12850 [001] 5167.510304: kvm_emulate_insn: 0:4201: 58
> (real)
> qemu-system-x86-12850 [001] 5167.510306: kvm_emulate_insn: 0:4202:
> 83 e0 fd (real)
> qemu-system-x86-12850 [001] 5167.510308: kvm_emulate_insn: 0:4205:
> 0d 28 80 (real)
> qemu-system-x86-12850 [001] 5167.510310: kvm_emulate_insn: 0:4208: 50
> (real)
> qemu-system-x86-12850 [001] 5167.510312: kvm_emulate_insn: 0:4209: 0e
> (real)
> qemu-system-x86-12850 [001] 5167.51
Re: [PATCH] test: Add emulator test for iret instruction
On Thu, Jul 29, 2010 at 02:18:20AM +0300, Mohammed Gamal wrote: > > Fourth test: > > qemu-system-x86-12850 [001] 5167.510302: kvm_emulate_insn: 0:4200: 9c > > (real) > > qemu-system-x86-12850 [001] 5167.510304: kvm_emulate_insn: 0:4201: 58 > > (real) > > qemu-system-x86-12850 [001] 5167.510306: kvm_emulate_insn: 0:4202: > > 83 e0 fd (real) > > qemu-system-x86-12850 [001] 5167.510308: kvm_emulate_insn: 0:4205: > > 0d 28 80 (real) > > qemu-system-x86-12850 [001] 5167.510310: kvm_emulate_insn: 0:4208: 50 > > (real) > > qemu-system-x86-12850 [001] 5167.510312: kvm_emulate_insn: 0:4209: 0e > > (real) > > qemu-system-x86-12850 [001] 5167.510313: kvm_emulate_insn: 0:420a: > > e8 02 00 (real) > > qemu-system-x86-12850 [001] 5167.510315: kvm_emulate_insn: 0:420f: cf > > (real) > > qemu-system-x86-12850 [001] 5167.510318: kvm_emulate_insn: 0:420d: > > eb 01 (real) > > > > As an extra note, you need to run realmode.flat with the > emulate_invalid_guest_state=1 module option for kvm_intel. If you > don't use that option, the emulator is not going to be invoked. Doh, right. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH] test: Add emulator test for iret instruction
On Wed, Jul 28, 2010 at 12:39:01PM +0300, Mohammed Gamal wrote: > This adds a unit test for real mode emulation of the iret instruction > > Signed-off-by: Mohammed Gamal > > --- > Changes from v1: > - Added test for 16-bit iret > - Added tests for returned eflags > --- > kvm/test/x86/realmode.c | 79 > +++ > 1 files changed, 79 insertions(+), 0 deletions(-) Applied, thanks. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
