On Tue, Jun 7, 2011 at 4:04 AM, Chris Wright chr...@sous-sol.org wrote:
* Alex Williamson (alex.william...@redhat.com) wrote:
On Mon, 2011-06-06 at 14:39 +0530, padmanabh ratnakar wrote:
Hi,
I am using linux kernel 2.6.39. I have a IBM x3650 M3 system.
I have used following boot
On Tue, May 31, 2011 at 12:26:55PM +0200, Ingo Molnar wrote:
* Avi Kivity a...@redhat.com wrote:
On 05/31/2011 10:38 AM, Ingo Molnar wrote:
* Borislav Petkovb...@alien8.de wrote:
+++ b/arch/x86/kvm/paging_tmpl.h
@@ -121,7 +121,7 @@ static int FNAME(walk_addr_generic)(struct
On 06/07/2011 10:28 AM, Borislav Petkov wrote:
So, any progress on this front? Warning is still there in -rc2.
Thanks for the reminder, applied and queued.
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On 2011-06-06 08:30, Gerd Hoffmann wrote:
Hi,
As Jan points out though, is a dynamic PCI region really needed?
Those that need a large PCI region are also likely to need a large
amount of memory. Maybe the space for PCI should just be increased.
Just changing it will not work as it
On 06/07/2011 01:04 AM, Jan Kiszka wrote:
On 2011-06-06 23:48, Alex Williamson wrote:
On Mon, 2011-06-06 at 23:30 +0200, Jan Kiszka wrote:
From: Jan Kiszkajan.kis...@siemens.com
At least kernels 2.6.38 and 2.6.39 do not properly support issuing a
reset on an assigned device and corrupt
On 2011-06-07 10:06, Avi Kivity wrote:
On 06/07/2011 01:04 AM, Jan Kiszka wrote:
On 2011-06-06 23:48, Alex Williamson wrote:
On Mon, 2011-06-06 at 23:30 +0200, Jan Kiszka wrote:
From: Jan Kiszkajan.kis...@siemens.com
At least kernels 2.6.38 and 2.6.39 do not properly support issuing a
On 06/06/2011 08:27 PM, Marcelo Tosatti wrote:
Only decache guest CR3 value if vcpu-arch.cr3 is stale.
Fixes loadvm with live guest.
@@ -2049,7 +2049,9 @@ static void ept_update_paging_mode_cr0(unsigned long
*hw_cr0,
unsigned long cr0,
From: Amos Kong ak...@redhat.com
qemu-kvm/hw/virtio_config.h:
#define VIRTIO_CONFIG_S_ACKNOWLEDGE 1
#define VIRTIO_CONFIG_S_DRIVER 2
#define VIRTIO_CONFIG_S_DRIVER_OK 4
#define VIRTIO_CONFIG_S_FAILED 0x80
virtio-spec:
ACKNOWLEDGE(1) :
DRIVER(2) :
DRIVER_OK(3)
The idea of this patchset is from Avi:
| We could cache the result of a miss in an spte by using a reserved bit, and
| checking the page fault error code (or seeing if we get an ept violation or
| ept misconfiguration), so if we get repeated mmio on a page, we don't need to
| search the slot
Properly check the last mapping, and do not walk to the next level if last spte
is met
Signed-off-by: Xiao Guangrong xiaoguangr...@cn.fujitsu.com
---
arch/x86/kvm/mmu.c |9 +
1 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index
Set slot bitmap only if the spte is present
Signed-off-by: Xiao Guangrong xiaoguangr...@cn.fujitsu.com
---
arch/x86/kvm/mmu.c | 15 +++
1 files changed, 7 insertions(+), 8 deletions(-)
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index cda666a..125f78d 100644
---
We already get the guest physical address, so use it to read guest data
directly to avoid walking guest page table again
Signed-off-by: Xiao Guangrong xiaoguangr...@cn.fujitsu.com
---
arch/x86/kvm/x86.c |3 +--
1 files changed, 1 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kvm/x86.c
If the page fault is caused by mmio, we can cache the mmio info, later, we do
not need to walk guest page table and quickly know it is a mmio fault while we
emulate the mmio instruction
Signed-off-by: Xiao Guangrong xiaoguangr...@cn.fujitsu.com
---
arch/x86/include/asm/kvm_host.h |5 +++
If dirty bit is not set, we can make the pte access read-only to avoid handing
dirty bit everywhere
Signed-off-by: Xiao Guangrong xiaoguangr...@cn.fujitsu.com
---
arch/x86/kvm/mmu.c | 13 ++---
arch/x86/kvm/paging_tmpl.h | 30 ++
2 files changed,
gw-pte_access is the final access permission, since it is unified with
gw-pt_access when we walked guest page table:
FNAME(walk_addr_generic):
pte_access = pt_access FNAME(gpte_access)(vcpu, pte);
Signed-off-by: Xiao Guangrong xiaoguangr...@cn.fujitsu.com
---
arch/x86/kvm/paging_tmpl.h
If 'pt_write' is true, we need to emulate the fault. And in later patch, we
need to emulate the fault even though it is not a pt_write event, so rename
it to better fit the meaning
Signed-off-by: Xiao Guangrong xiaoguangr...@cn.fujitsu.com
---
arch/x86/kvm/mmu.c | 10 +-
Move counting used shadow pages from committing path to preparing path to
reduce tlb flush on some paths
Signed-off-by: Xiao Guangrong xiaoguangr...@cn.fujitsu.com
---
arch/x86/kvm/mmu.c | 10 +-
1 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/arch/x86/kvm/mmu.c
Split kvm_mmu_free_page to kvm_mmu_free_lock_parts and
kvm_mmu_free_unlock_parts
One is used to free the parts which is under mmu lock and the other is
used to free the parts which can allow be freed out of mmu lock
It is used by later patch
Signed-off-by: Xiao Guangrong
Using rcu to protect shadow pages table to be freed, so we can safely walk it,
it should run fast and is needed by mmio page fault
Signed-off-by: Xiao Guangrong xiaoguangr...@cn.fujitsu.com
---
arch/x86/include/asm/kvm_host.h |4 ++
arch/x86/kvm/mmu.c | 79
If the page fault is caused by mmio, the gfn can not be found in memslots, and
'bad_pfn' is returned on gfn_to_hva path, so we can use 'bad_pfn' to identify
the mmio page fault.
And, to clarify the meaning of mmio pfn, we return fault page instead of bad
page when the gfn is not allowed to
Introduce handle_abnormal_pfn to handle fault pfn on page fault path,
introduce mmu_invalid_pfn to handle fault pfn on prefetch path
It is the preparing work for mmio page fault support
Signed-off-by: Xiao Guangrong xiaoguangr...@cn.fujitsu.com
---
arch/x86/kvm/mmu.c | 47
Modify the default value to identify nontrap shadow pte and mmio shadow pte
whill will be introduced in later patch
Signed-off-by: Xiao Guangrong xiaoguangr...@cn.fujitsu.com
---
arch/x86/kvm/vmx.c |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kvm/vmx.c
The idea is from Avi:
| We could cache the result of a miss in an spte by using a reserved bit, and
| checking the page fault error code (or seeing if we get an ept violation or
| ept misconfiguration), so if we get repeated mmio on a page, we don't need to
| search the slot list/tree.
|
Add tracepoints to trace mmio page fault
Signed-off-by: Xiao Guangrong xiaoguangr...@cn.fujitsu.com
---
arch/x86/kvm/mmu.c |4 +++
arch/x86/kvm/mmutrace.h| 48
arch/x86/kvm/x86.c |5 +++-
include/trace/events/kvm.h | 24
qemu-kvm/hw/virtio_config.h:
#define VIRTIO_CONFIG_S_ACKNOWLEDGE 1
#define VIRTIO_CONFIG_S_DRIVER 2
#define VIRTIO_CONFIG_S_DRIVER_OK 4
#define VIRTIO_CONFIG_S_FAILED 0x80
virtio-spec:
ACKNOWLEDGE(1) :
DRIVER(2) :
DRIVER_OK(3) :
FAILED(128):
The spec
On 07/06/11 04:22, Eric Dumazet wrote:
Could you please try latest linux-2.6 tree ?
We fixed many networking bugs that could explain your crash.
No good I'm afraid.
[ 543.040056]
=
[ 543.040136] BUG
On 07.06.2011 05:33, Brad Campbell wrote:
On 07/06/11 04:10, Bart De Schuymer wrote:
Hi Brad,
This has probably nothing to do with ebtables, so please rmmod in case
it's loaded.
A few questions I didn't directly see an answer to in the threads I
scanned...
I'm assuming you actually use the
Le mardi 07 juin 2011 à 21:27 +0800, Brad Campbell a écrit :
On 07/06/11 04:22, Eric Dumazet wrote:
Could you please try latest linux-2.6 tree ?
We fixed many networking bugs that could explain your crash.
No good I'm afraid.
[ 543.040056]
* padmanabh ratnakar (pratnaka...@gmail.com) wrote:
On Tue, Jun 7, 2011 at 4:04 AM, Chris Wright chr...@sous-sol.org wrote:
* Alex Williamson (alex.william...@redhat.com) wrote:
On Mon, 2011-06-06 at 14:39 +0530, padmanabh ratnakar wrote:
Hi,
I am using linux kernel 2.6.39. I
Hi all,
after some preliminary discussion on the QEMU mailing list, I present a
draft specification for a virtio-based SCSI host (controller, HBA, you
name it).
The virtio SCSI host is the basis of an alternative storage stack for
KVM. This stack would overcome several limitations of the current
On Tue, 2011-06-07 at 06:38 -0700, Chris Wright wrote:
I think we still leak the list entry though. Bottom line is that we
need to handle hotplug ADD_DEVICE and DEL_DEVICE notifications. We
happen to pick up ADD_DEVICE by accident, but it's all pretty sloppy.
Yeah, keeping a list of
On 07/06/11 21:30, Patrick McHardy wrote:
On 07.06.2011 05:33, Brad Campbell wrote:
On 07/06/11 04:10, Bart De Schuymer wrote:
Hi Brad,
This has probably nothing to do with ebtables, so please rmmod in case
it's loaded.
A few questions I didn't directly see an answer to in the threads I
* David Woodhouse (dw...@infradead.org) wrote:
On Tue, 2011-06-07 at 06:38 -0700, Chris Wright wrote:
I think we still leak the list entry though. Bottom line is that we
need to handle hotplug ADD_DEVICE and DEL_DEVICE notifications. We
happen to pick up ADD_DEVICE by accident, but it's
This patch wires up hw/i8042.c to the SDL UI for simple guest keyboard support.
Cc: Cyrill Gorcunov gorcu...@gmail.com
Cc: Ingo Molnar mi...@elte.hu
Cc: John Floren j...@jfloren.net
Cc: Sasha Levin levinsasha...@gmail.com
Signed-off-by: Pekka Enberg penb...@kernel.org
---
tools/kvm/kvm-run.c |
On Tue, 2011-06-07 at 08:10 -0700, Chris Wright wrote:
* David Woodhouse (dw...@infradead.org) wrote:
On Tue, 2011-06-07 at 06:38 -0700, Chris Wright wrote:
I think we still leak the list entry though. Bottom line is that we
need to handle hotplug ADD_DEVICE and DEL_DEVICE notifications.
On 07.06.2011 16:40, Brad Campbell wrote:
On 07/06/11 21:30, Patrick McHardy wrote:
On 07.06.2011 05:33, Brad Campbell wrote:
On 07/06/11 04:10, Bart De Schuymer wrote:
Hi Brad,
This has probably nothing to do with ebtables, so please rmmod in case
it's loaded.
A few questions I didn't
* David Woodhouse (dw...@infradead.org) wrote:
On Tue, 2011-06-07 at 08:10 -0700, Chris Wright wrote:
* David Woodhouse (dw...@infradead.org) wrote:
On Tue, 2011-06-07 at 06:38 -0700, Chris Wright wrote:
I think we still leak the list entry though. Bottom line is that we
need to
On Tue, 2011-06-07 at 16:33 +0100, David Woodhouse wrote:
On Tue, 2011-06-07 at 08:10 -0700, Chris Wright wrote:
* David Woodhouse (dw...@infradead.org) wrote:
On Tue, 2011-06-07 at 06:38 -0700, Chris Wright wrote:
I think we still leak the list entry though. Bottom line is that we
On Thu, Jun 02, 2011 at 06:43:25PM +0300, Michael S. Tsirkin wrote:
This reverts commit 3c1b27d5043086a485f8526353ae9fe37bfa1065.
The only user was virtio_net, and it switched to
min_capacity instead.
Signed-off-by: Michael S. Tsirkin m...@redhat.com
It turns out another place in
On Thu, Jun 02, 2011 at 06:43:17PM +0300, Michael S. Tsirkin wrote:
Current code might introduce a lot of latency variation
if there are many pending bufs at the time we
attempt to transmit a new one. This is bad for
real-time applications and can't be good for TCP either.
Free up just
On Thu, Jun 02, 2011 at 06:42:35PM +0300, Michael S. Tsirkin wrote:
OK, here's a new attempt to use the new capacity api. I also added more
comments to clarify the logic. Hope this is more readable. Let me know
pls.
This is on top of the patches applied by Rusty.
Warning: untested.
Op 7/06/2011 16:40, Brad Campbell schreef:
On 07/06/11 21:30, Patrick McHardy wrote:
On 07.06.2011 05:33, Brad Campbell wrote:
On 07/06/11 04:10, Bart De Schuymer wrote:
Hi Brad,
This has probably nothing to do with ebtables, so please rmmod in case
it's loaded.
A few questions I didn't
Le mardi 07 juin 2011 à 17:35 +0200, Patrick McHardy a écrit :
The main suspects would be NAT and TCPMSS. Did you also try whether
the crash occurs with only one of these these rules?
I've just compiled out CONFIG_BRIDGE_NETFILTER and can no longer access
the address the way I was doing
On Tue, 2011-06-07 at 10:14 +0200, Jan Kiszka wrote:
On 2011-06-07 10:06, Avi Kivity wrote:
On 06/07/2011 01:04 AM, Jan Kiszka wrote:
On 2011-06-06 23:48, Alex Williamson wrote:
On Mon, 2011-06-06 at 23:30 +0200, Jan Kiszka wrote:
From: Jan Kiszkajan.kis...@siemens.com
At least
On 05/16/2011 01:45 PM, Glauber Costa wrote:
This patch adds a dummy legacy ISA device whose responsibility is to
deploy sgabios, an option rom for a serial graphics adapter.
The proposal is that this device is always-on when -nographics,
but can otherwise be enable in any setup when -device sga
Signed-off-by: Cyrill Gorcunov gorcu...@gmail.com
---
tools/kvm/bios/rom.ld.S |4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
Index: linux-2.6.git/tools/kvm/bios/rom.ld.S
===
---
Put bios code into bios.s and adjust makefile
rules accordingly. It's more natural than bios-rom.S
(which is now simply a container over real bios code).
Also improve bios deps in Makefile.
Signed-off-by: Cyrill Gorcunov gorcu...@gmail.com
---
tools/kvm/Makefile| 29 +++-
Some kernel parameters are convenient if passed in
hex form so our options parser should handle even
such form of input.
Signed-off-by: Cyrill Gorcunov gorcu...@gmail.com
---
tools/kvm/util/parse-options.c | 102 -
1 file changed, 82 insertions(+), 20
Noone use it anymore. Also cleanup comment on
int10 as well, int10_handler routine do all
the hard work.
Signed-off-by: Cyrill Gorcunov gorcu...@gmail.com
---
tools/kvm/bios/bios-rom.S | 14 +-
1 file changed, 1 insertion(+), 13 deletions(-)
Index:
Usually this might be set by loader but since
we're the loader lets allow to specify vesa
mode as well.
Signed-off-by: Cyrill Gorcunov gorcu...@gmail.com
---
tools/kvm/kvm-run.c | 12 +++-
1 file changed, 7 insertions(+), 5 deletions(-)
Index: linux-2.6.git/tools/kvm/kvm-run.c
Nothing serious, please review. Thanks.
Cyrill
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On Tue, 7 Jun 2011, Cyrill Gorcunov wrote:
Usually this might be set by loader but since
we're the loader lets allow to specify vesa
mode as well.
Signed-off-by: Cyrill Gorcunov gorcu...@gmail.com
This patch causes 'make check' to go crazy and print out bunch of these:
Warning: Ignoring MMIO
On Tue, Jun 07, 2011 at 10:53:28PM +0300, Pekka Enberg wrote:
On Tue, 7 Jun 2011, Cyrill Gorcunov wrote:
Usually this might be set by loader but since
we're the loader lets allow to specify vesa
mode as well.
Signed-off-by: Cyrill Gorcunov gorcu...@gmail.com
This patch causes 'make
On Tue, Jun 07, 2011 at 10:53:28PM +0300, Pekka Enberg wrote:
On Tue, 7 Jun 2011, Cyrill Gorcunov wrote:
Usually this might be set by loader but since
we're the loader lets allow to specify vesa
mode as well.
Signed-off-by: Cyrill Gorcunov gorcu...@gmail.com
This patch causes 'make
On Wed, Jun 08, 2011 at 12:10:30AM +0400, Cyrill Gorcunov wrote:
On Tue, Jun 07, 2011 at 10:53:28PM +0300, Pekka Enberg wrote:
On Tue, 7 Jun 2011, Cyrill Gorcunov wrote:
Usually this might be set by loader but since
we're the loader lets allow to specify vesa
mode as well.
KVM has an ioctl to define which signal mask should be used while running
inside VCPU_RUN. At least for big endian systems, this mask is different
on 32-bit and 64-bit systems (though the size is identical).
Add a compat wrapper that converts the mask to whatever the kernel accepts,
allowing
On 06/07/2011 04:17 PM, Anthony Liguori wrote:
On 05/16/2011 01:45 PM, Glauber Costa wrote:
This patch adds a dummy legacy ISA device whose responsibility is to
deploy sgabios, an option rom for a serial graphics adapter.
The proposal is that this device is always-on when -nographics,
but can
On Tuesday 07 June 2011 22:25:15 Alexander Graf wrote:
+static long kvm_vcpu_compat_ioctl(struct file *filp,
+ unsigned int ioctl, unsigned long arg)
+{
+ struct kvm_vcpu *vcpu = filp-private_data;
+ void __user *argp = (void __user *)arg;
On 07.06.2011 20:31, Eric Dumazet wrote:
Le mardi 07 juin 2011 à 17:35 +0200, Patrick McHardy a écrit :
The main suspects would be NAT and TCPMSS. Did you also try whether
the crash occurs with only one of these these rules?
I've just compiled out CONFIG_BRIDGE_NETFILTER and can no longer
On 08/06/11 02:04, Bart De Schuymer wrote:
If the bug is easily triggered with your guest os, then you could try to
capture the traffic with wireshark (or something else) in a
configuration that doesn't crash your system. Save the traffic in a pcap
file. Then you can see if resending that
On 08/06/11 06:57, Patrick McHardy wrote:
On 07.06.2011 20:31, Eric Dumazet wrote:
Le mardi 07 juin 2011 à 17:35 +0200, Patrick McHardy a écrit :
The main suspects would be NAT and TCPMSS. Did you also try whether
the crash occurs with only one of these these rules?
I've just compiled out
On 07/06/11 23:35, Patrick McHardy wrote:
The main suspects would be NAT and TCPMSS. Did you also try whether
the crash occurs with only one of these these rules?
To be honest I'm actually having trouble finding where TCPMSS is
actually set in that ruleset. This is a production machine so I
KVM has an ioctl to define which signal mask should be used while running
inside VCPU_RUN. At least for big endian systems, this mask is different
on 32-bit and 64-bit systems (though the size is identical).
Add a compat wrapper that converts the mask to whatever the kernel accepts,
allowing
On Tue, 7 Jun 2011 18:54:57 +0300, Michael S. Tsirkin m...@redhat.com wrote:
On Thu, Jun 02, 2011 at 06:43:25PM +0300, Michael S. Tsirkin wrote:
This reverts commit 3c1b27d5043086a485f8526353ae9fe37bfa1065.
The only user was virtio_net, and it switched to
min_capacity instead.
On Tue, 7 Jun 2011 21:09:42 +0800, Amos Kong ak...@redhat.com wrote:
qemu-kvm/hw/virtio_config.h:
#define VIRTIO_CONFIG_S_ACKNOWLEDGE 1
#define VIRTIO_CONFIG_S_DRIVER 2
#define VIRTIO_CONFIG_S_DRIVER_OK 4
#define VIRTIO_CONFIG_S_FAILED 0x80
virtio-spec:
On Tue, 07 Jun 2011 20:58:06 +0800
Xiao Guangrong xiaoguangr...@cn.fujitsu.com wrote:
The performance test result:
Netperf (TCP_RR):
===
ept is enabled:
Before After
1st 709.58 734.60
2nd 715.40 723.75
3rd 713.45
On 06/07/2011 09:01 PM, Xiao Guangrong wrote:
If dirty bit is not set, we can make the pte access read-only to avoid handing
dirty bit everywhere
diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h
index b0c8184..67971da 100644
--- a/arch/x86/kvm/paging_tmpl.h
+++
On 06/08/2011 11:11 AM, Takuya Yoshikawa wrote:
On Tue, 07 Jun 2011 20:58:06 +0800
Xiao Guangrong xiaoguangr...@cn.fujitsu.com wrote:
The performance test result:
Netperf (TCP_RR):
===
ept is enabled:
Before After
1st 709.58 734.60
2nd
Hello,
I am trying to understand the kvm code. I am writing simple code in
which I want to send some message or notification from the guest to
host (qemu-kvm).
I thought of implementing some hypercalls in which, on some condition
this hypercall will get called and it get handled in qemu-kvm. But
On 06/08/2011 11:25 AM, Xiao Guangrong wrote:
On 06/08/2011 11:11 AM, Takuya Yoshikawa wrote:
On Tue, 07 Jun 2011 20:58:06 +0800
Xiao Guangrong xiaoguangr...@cn.fujitsu.com wrote:
The performance test result:
Netperf (TCP_RR):
===
ept is enabled:
Before
On Wed, 08 Jun 2011 11:32:12 +0800
Xiao Guangrong xiaoguangr...@cn.fujitsu.com wrote:
On 06/08/2011 11:25 AM, Xiao Guangrong wrote:
On 06/08/2011 11:11 AM, Takuya Yoshikawa wrote:
On Tue, 07 Jun 2011 20:58:06 +0800
Xiao Guangrong xiaoguangr...@cn.fujitsu.com wrote:
The performance test
Le mercredi 08 juin 2011 à 08:18 +0800, Brad Campbell a écrit :
On 08/06/11 06:57, Patrick McHardy wrote:
On 07.06.2011 20:31, Eric Dumazet wrote:
Le mardi 07 juin 2011 à 17:35 +0200, Patrick McHardy a écrit :
The main suspects would be NAT and TCPMSS. Did you also try whether
the crash
On 06/08/2011 11:47 AM, Takuya Yoshikawa wrote:
Sure, KVM guest is the client, and it uses e1000 NIC, and uses NAT
network connect to the netperf server, the bandwidth of our network
is 100M.
I see the reason, thank you!
I used virtio-net and you used e1000.
You are using e1000 to see
KVM has an ioctl to define which signal mask should be used while running
inside VCPU_RUN. At least for big endian systems, this mask is different
on 32-bit and 64-bit systems (though the size is identical).
Add a compat wrapper that converts the mask to whatever the kernel accepts,
allowing
On Tuesday 07 June 2011 22:25:15 Alexander Graf wrote:
+static long kvm_vcpu_compat_ioctl(struct file *filp,
+ unsigned int ioctl, unsigned long arg)
+{
+ struct kvm_vcpu *vcpu = filp-private_data;
+ void __user *argp = (void __user *)arg;
KVM has an ioctl to define which signal mask should be used while running
inside VCPU_RUN. At least for big endian systems, this mask is different
on 32-bit and 64-bit systems (though the size is identical).
Add a compat wrapper that converts the mask to whatever the kernel accepts,
allowing
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