dle access properly.
Here the patch to fix it.
Signed-off-by: Dmitry Poletaev
---
target/i386/cpu.c| 2 +-
target/i386/cpu.h| 3 ++-
target/i386/helper.c | 5 -
3 files changed, 7 insertions(+), 3 deletions(-)
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 9e0bac31e8..8ade4ed2c6 10
I am using OVMF2018
(https://github.com/tianocore/tianocore.github.io/wiki/OVMF) build with smm
functionality. Run qemu with "-machine smm=on" option.
When SMI handler starts working, cpu_memory_rw_debug() function reads from
tseg_blackhole device mem and function returns ... instead of actu
.com/ispras/qemu.git , branch vmx.
Best regards,
Dmitry Poletaev.
ping
Best regards,
Dmitry Poletaev.
From: poletaev [mailto:dmitry.polet...@ispras.ru]
Sent: Tuesday, June 07, 2016 5:12 PM
To: 'qemu-devel@nongnu.org'
Cc: 'pavel.dovga...@ispras.ru'
Subject: [PATCH v2] target-i386: fix iret emulation correctness
From: Dmitr
ping
Best regards,
Dmitry Poletaev.
From: poletaev [mailto:dmitry.polet...@ispras.ru]
Sent: Tuesday, June 07, 2016 5:12 PM
To: 'qemu-devel@nongnu.org'
Cc: 'pavel.dovga...@ispras.ru'
Subject: [PATCH v2] target-i386: fix iret emulation correctness
From: Dmitr
From: Dmitry Poletaev
Subject: [PATCH v2] target-i386: fix iret emulation correctness
According to Intel manual: "If the NMI handler is a virtual-8086 task with
an IOPL of less than 3, an IRET instruction issued from the handler
generates a general-protection
exception, the NMI is unm
c - s->cs_base));
set_cc_op(s, CC_OP_EFLAGS);
}
gen_eob(s);
break;
Best regards,
Dmitry Poletaev.
From: Dmitry Poletaev
Subject: [PATCH] target-i386: fix iret emulation correctness
Signed-off-by: Dmitry Poletaev
According to Intel manual: "If the NMI handler is a virtual-8086 task with
an IOPL of less than 3, an IRET instruction issued from the handler
generates a general-prote
kvm script prints almost different traces.
Anyway, it is nice tools for futher debugging.
May be you could give some more advises?
Thank you.
26.05.2016, 13:09, "Paolo Bonzini" :
> On 26/05/2016 11:55, Dmitry Poletaev wrote:
>> kvm_mmu_page_fault goes to nonpaging_page_fa
Hello.
In my diploma project I'm trying to add VMX to qemu. It is first vmx
incarnation, without ept, unrestricted guest and other improvements.
It seems working in some way. Virtual Box can execute few hundreds of
instructions until crash, but it's tricky for me to build it completely to add
s
There is a misprint in the patch
https://lists.gnu.org/archive/html/qemu-devel/2014-11/msg01657.html . It cause
errors in guest work.
Here is the bugfix.
From: Dmitry Poletaev
Signed-off-by: Dmitry Poletaev
Reported-by: Kirill Batuzov
---
target-i386/fpu_helper.c | 2 +-
1 file changed, 1
ping
25.07.2014, 15:48, "Dmitry Poletaev" :
> Obviously, there is a misprint in function implementation.
>
> From: Dmitry Poletaev
> Signed-off-by: Dmitry Poletaev
>
> ---
> target-i386/fpu_helper.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deleti
From: Dmitry Poletaev
Signed-off-by: Dmitry Poletaev
---
target-i386/fpu_helper.c | 24 +---
1 file changed, 21 insertions(+), 3 deletions(-)
diff --git a/target-i386/fpu_helper.c b/target-i386/fpu_helper.c
index ab19b71..fc25a03 100644
--- a/target-i386/fpu_helper.c
+++ b
What do you mean?
29.07.2014, 23:07, "Richard Henderson" :
> On 07/23/2014 05:04 AM, Dmitry Poletaev wrote:
>> + if (env->fp_status.float_exception_flags & FPUS_IE) {
>
> Mixing bit masks. s/FPUS_IE/float_status_invalid/
>
> r~
Obviously, there is a misprint in function implementation.
From: Dmitry Poletaev
Signed-off-by: Dmitry Poletaev
---
target-i386/fpu_helper.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/target-i386/fpu_helper.c b/target-i386/fpu_helper.c
index 1b2900d..be1e545 100644
23.07.2014, 21:13, "Peter Maydell" :
> On 23 July 2014 16:04, Dmitry Poletaev wrote:
>> I'm understood. So, am I right?
> Pretty much, except it's better to use the accessor functions
> get_float_exception_flags() and set_float_e
I'm understood. So, am I right?
From: Dmitry Poletaev
Signed-off-by: Dmitry Poletaev
---
target-i386/fpu_helper.c | 21 ++---
1 file changed, 18 insertions(+), 3 deletions(-)
diff --git a/target-i386/fpu_helper.c b/target-i386/fpu_helper.c
index 1b2900d..c4fdad8 100644
14.07.2014, 18:59, "Peter Maydell" :
> Since softfloat's status flags are sticky ...
What does it mean?
ording to tcg tests), but I am not shure it doesn't breaks
anything.
From: Dmitry Poletaev
Signed-off-by: Dmitry Poletaev
---
fpu/softfloat.c | 8 +---
1 file changed, 1 insertion(+), 7 deletions(-)
diff --git a/fpu/softfloat.c b/fpu/softfloat.c
index 9274ebf..580c322 100644
--- a/fp
after btx
instructions.
Signed-off-by: Dmitry Poletaev
diff --git a/target-i386/cc_helper.c b/target-i386/cc_helper.c
index 05dd12b..272e2f1 100644
--- a/target-i386/cc_helper.c
+++ b/target-i386/cc_helper.c
@@ -168,6 +168,12 @@ target_ulong helper_cc_compute_all(target_ulong dst,
target_ulong src1
: poletaev
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH] improve emulation correctness
On Thu, Apr 24, 2014 at 12:35:24PM +0400, poletaev wrote:
> There is a set of test, that checks QEMU CPU for similar behavior with
> real hardware (http://roberto.greyhats.it/projects/pill
2014 14:41, Dmitry Poletaev wrote:
>
>> Let's imagine we analyse a program(may be a malware) and so
>> run it in emulator. Malware can execute that test and understand
>> that it run in an emulator. After that malware can make decision,
>> that someone analyse it and a
27.04.2014, 20:59, "Peter Maydell" :
> On 27 April 2014 17:46, Michael Tokarev wrote:
>> 25.04.2014 21:24, Peter Maydell wrote:
>>> It is always going to be possible to determine that you're
>>> running on an emulator rather than real hardware, so changing
>>> QEMU behaviour just for thi
25.04.2014, 21:09, "Richard Henderson" :
> On 04/25/2014 01:13 AM, Dmitry Poletaev wrote:
>> There is a set of test, that checks QEMU CPU for similar behavior with
>> real hardware (http://roberto.greyhats.it/projects/pills.html). Test
>> reg/pill2579.c can det
than 1, OF of eflags become undefined. Real CPUs does not change
OF, if it is undefined. QEMU do it anyway.
Emulated program can execute that test and after that can understand
environment not real.
Signed-off-by: Dmitry Poletaev
diff --git a/target-i386/shift_helper_template.h
b/target
more than 1, OF of
eflags become undefined. Real CPUs does not change OF, if it is undefined. QEMU
do it anyway.
Emulated program can execute that test and after that can understand
environment not real.
Signed-off-by: Dmitry Poletaev
diff --git a/target-i386/shift_helper_template.h
b/target
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