Commit 0d679782b0299bc6a0d01df20676fe56b2c31857 changed the use of
is_mmio_pfn, so rebased this patch to latest kvm.git.
Thanks
Xiantao
>From 485e503470ebaa7194d6878a6d0c5d149af0a501 Mon Sep 17 00:00:00 2001
From: Xiantao Zhang <[EMAIL PROTECTED]>
Date: Sat, 27 Sep 2008 10:55:40 +0800
Subject: [P
Ryan Harper wrote:
There are two concerns with allowing the guest to alloc arbitrary
amounts of memory. The first is that QEMU is not written in such a way
to be robust in the face of out-of-memory conditions so if we run out of
VA space, an important malloc could fail and we'd fall over.
duck roaming.ath.cx> writes:
> Michael Malone wrote:
[snip
> Glauber Costa replied:
[snip]
> > This is a band aid, but proves the general idea. Can you
> > confirm that it fixes the problem for you ?
>
> When I apply glommer's abovementioned band aid patch and use -std-vga then
> the problem is
Required for read watchpoints.
Signed-off-by: Jan Kiszka <[EMAIL PROTECTED]>
---
qemu/softmmu_template.h |1 +
1 file changed, 1 insertion(+)
Index: b/qemu/softmmu_template.h
===
--- a/qemu/softmmu_template.h
+++ b/qemu/softmmu_
VMX differentiates between processor and software generated exceptions
when injecting them into the guest. Extend vmx_queue_exception
accordingly (and refactor related constants) so that we can use this
service reliably for the new guest debugging framework.
Signed-off-by: Jan Kiszka <[EMAIL PROTE
While still waiting on the required merge of the QEMU bits in this
series (sigh...), I want to provide an update of my guest debugging and
x86 debug register improvement patches. First comes the kvm-userspace
part, kernel bits follow in a separate series.
No new features since my last posting. But
Switching tb_invalidate_phys_page_range and tb_invalidate_phys_page over
to the new next_cflags scheme when self-modifying code was detected can
save a few lines of code and remove arch dependency.
Signed-off-by: Jan Kiszka <[EMAIL PROTECTED]>
---
qemu/exec.c | 32 --
This patch allows to hook into the delivery of EXCP_DEBUG so that other
use beyond guest debugging becomes possible.
Signed-off-by: Jan Kiszka <[EMAIL PROTECTED]>
---
qemu/cpu-exec.c | 13 +
qemu/exec-all.h |4
2 files changed, 17 insertions(+)
Index: b/qemu/cpu-exec.c
===
Add another breakpoint/watchpoint type to BP_GDB: BP_CPU. This type is
intended for hardware-assisted break/watchpoint emulations like the x86
architecture requires.
To keep the highest priority for BP_GDB breakpoints, this type is
always inserted at the head of break/watchpoint lists, thus is fou
This patch enhances QEMU's built-in debugger for SMP guest debugging.
It allows to set the debugger focus explicitly via the monitor command
"cpu", and it automatically switches the focus on breakpoint hit to
the reporting CPU.
Furthermore, the patch propagates breakpoint and watchpoint insertions
When one watchpoint is hit, others might have triggered as well. To
support users of the watchpoint API which need to detect such cases,
the BP_WATCHPOINT_HIT flag is introduced and maintained.
Signed-off-by: Jan Kiszka <[EMAIL PROTECTED]>
---
qemu/cpu-all.h |1 +
qemu/cpu-exec.c | 11
So far KVM only had basic x86 debug register support, once introduced to
realize guest debugging that way. The guest itself was not able to use
those registers.
This patch now adds (almost) full support for guest self-debugging via
hardware registers. It refactors the code, moving generic parts ou
This patch switches both libkvm as well as the qemu pieces over to the
new guest debug interface. It comes with full support for software-based
breakpoints (via guest code modification), hardware-assisted breakpoints
and watchpoints (x86-only so far).
Breakpoint management is done inside qemu-kvm,
This is the kernel part of my debugging patch series.
Jan
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Corporate Competence Center Embedded Linux
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Prepare to apply the QEMU debugging series by removing the old guest
debugging hooks for KVM.
Signed-off-by: Jan Kiszka <[EMAIL PROTECTED]>
---
qemu/exec.c |8
qemu/qemu-kvm.c |7 +--
2 files changed, 1 insertion(+), 14 deletions(-)
Index: b/qemu/exec.c
=
Now that we can properly restore the pc on watchpoint hits, there is no
more need for prematurely terminating TBs if watchpoints are present.
Remove all related bits.
Signed-off-by: Jan Kiszka <[EMAIL PROTECTED]>
---
qemu/exec.c |4
qemu/target-arm/translate.c |6 --
Return the appropriate type prefix (r, a, none) when reporting
watchpoint hits to the gdb front-end.
Signed-off-by: Jan Kiszka <[EMAIL PROTECTED]>
---
qemu/gdbstub.c | 17 +++--
1 file changed, 15 insertions(+), 2 deletions(-)
Index: b/qemu/gdbstub.c
===
This rips out the support for KVM_DEBUG_GUEST and introduces a new IOCTL
instead: KVM_SET_GUEST_DEBUG. The IOCTL payload consists of a generic
part, controlling the "main switch" and the single-step feature. The
arch specific part adds an x86 interface for intercepting both types of
debug exception
When single-stepping, we have to ensure that the INT1 can make it
through even if the guest itself is uninterruptible due to MOV SS or
STI. VMENTRY will fail otherwise.
Signed-off-by: Jan Kiszka <[EMAIL PROTECTED]>
---
arch/x86/kvm/vmx.c | 10 --
1 file changed, 8 insertions(+), 2 delet
Older set_debugreg macros did not allow to pass the register number as
constant (without additional typcasting). Catch this as the latest kvm
debug changes make use of this property.
Signed-off-by: Jan Kiszka <[EMAIL PROTECTED]>
---
kernel/external-module-compat-comm.h | 10 ++
1 file c
Introduce next_cflags as part of CPUState. It controls the compile flags
of the next newly generated TB. After use, it will automatically be reset
to zero. This allows the caller to simply set and then forget about it,
e.g. to ensure that the next, and only the next TB will contain just a
single in
Built on top of previously enhanced breakpoint/watchpoint support, this
patch adds full debug register emulation for the x86 architecture.
Many corner cases were considered, and the result was successfully
tested inside a Linux guest with gdb, but I won't be surprised if one
or two scenarios still
Avi Kivity wrote:
>
> Not that I know of. Indeed finer control over cpuid is needed. We need
> to support at least three modes:
>
> - default: expose some machine that is likely to be widely supported
> - host: expose as much of the host cpu as we can
> - managed: management application control
In order to provide accurate information about the triggering
instruction, this patch adds the required bits to restore the pc if the
access happened inside a TB. With the BP_STOP_BEFORE_ACCESS flag, the
watchpoint user can control if the debug trap should be issued on or
after the accessing instru
Add the remaining bits to make use of debug registers also for guest
debugging, thus enabling the use of hardware breakpoints and
watchpoints.
Signed-off-by: Jan Kiszka <[EMAIL PROTECTED]>
---
arch/x86/kvm/svm.c |5 +
arch/x86/kvm/vmx.c |5 +
arch/x86/kvm/x86.c | 14
Host debug registers are now properly saved and restored before/after
entering the guest.
Signed-off-by: Jan Kiszka <[EMAIL PROTECTED]>
---
kernel/x86/external-module-compat.h |2 --
kernel/x86/hack-module.awk |4
kernel/x86/preempt.c|6 --
3 files ch
This patch prepares the QEMU cpu_watchpoint/breakpoint API to allow the
succeeding enhancements this series comes with.
First of all, it overcomes MAX_BREAKPOINTS/MAX_WATCHPOINTS by switching
to dynamically allocated data structures that are kept in linked lists.
This also allows to return a stabl
This adds length support for watchpoints. To keep things simple, only
aligned watchpoints are accepted.
Signed-off-by: Jan Kiszka <[EMAIL PROTECTED]>
---
qemu/cpu-defs.h |2 +-
qemu/exec.c | 28 ++--
2 files changed, 19 insertions(+), 11 deletions(-)
Index: b/qe
Thanks for clarifying.
So back to my original question, how do I determine (via monitor/console) if
the guest is in "halted"/stop state ?
/Jd
--- On Sun, 10/5/08, Avi Kivity <[EMAIL PROTECTED]> wrote:
> From: Avi Kivity <[EMAIL PROTECTED]>
> Subject: Re: KVM Management : Paused stauts
> To: [
Bugs item #2149609, was opened at 2008-10-06 07:25
Message generated for change (Tracker Item Submitted) made by Item Submitter
You can respond by visiting:
https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2149609&group_id=180599
Please note that this message will contain a full copy
Don't halt non-boot CPU if IRQ chip is in kernel.
Otherwise CPU thread will never enter kernel again and will not process SIPI.
Signed-off-by: Gleb Natapov <[EMAIL PROTECTED]>
diff --git a/qemu/hw/apic.c b/qemu/hw/apic.c
index 52e424f..bdaa2fe 100644
--- a/qemu/hw/apic.c
+++ b/qemu/hw/apic.c
@@
Bugs item #2149609, was opened at 2008-10-06 16:25
Message generated for change (Comment added) made by kiszka
You can respond by visiting:
https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2149609&group_id=180599
Please note that this message will contain a full copy of the comment th
Bugs item #2149609, was opened at 2008-10-06 07:25
Message generated for change (Comment added) made by jiajun
You can respond by visiting:
https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2149609&group_id=180599
Please note that this message will contain a full copy of the comment th
On Sun, Oct 5, 2008 at 9:52 PM, duck <[EMAIL PROTECTED]> wrote:
> Michael Malone wrote:
>
When I run [kvm-76] it using the --std-vga parameter,
windows boots to just before it gets to the "welcome"
screen and hangs. The output shows a multitude of
"kvm: get_dirty_pages returned
>From: Avi Kivity [mailto:[EMAIL PROTECTED]
>
>Indeed finer control over cpuid is needed. We need
>to support at least three modes:
>
>- default: expose some machine that is likely to be widely supported
>- host: expose as much of the host cpu as we can
>- managed: management application controls
* Kamble, Nitin A ([EMAIL PROTECTED]) wrote:
> >From: Avi Kivity [mailto:[EMAIL PROTECTED]
> >Indeed finer control over cpuid is needed. We need
> >to support at least three modes:
> >
> >- default: expose some machine that is likely to be widely supported
> >- host: expose as much of the host cpu
On Monday 06 October 2008 11:36:08 Yang, Sheng wrote:
> On Sunday 05 October 2008 18:27:20 Avi Kivity wrote:
> > Sheng Yang wrote:
> > > As well as export ioapic_get_delivery_bitmask().
> > >
> > > @@ -132,8 +177,12 @@ static void
> > > kvm_assigned_dev_interrupt_work_handler(struct work_struct *wo
Update according to the comments. Thanks!
--
From: Sheng Yang <[EMAIL PROTECTED]>
Date: Tue, 7 Oct 2008 14:04:24 +0800
Subject: [PATCH 4/4] KVM: x86: Enable MSI for assigned device
As well as export ioapic_get_delivery_bitmask().
Signed-off-by: Sheng Yang <[EMAIL PROTECTED]>
---
arch/x86/kvm/x8
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