On Wed, 8 May 2013 10:57:29 +0800
Asias He as...@redhat.com wrote:
In commit a0f155e96 'KVM: Initialize irqfd from kvm_init()', when
kvm_init() is called the second time (e.g kvm-amd.ko and kvm-intel.ko),
kvm_arch_init() will fail with -EEXIST, then kvm_irqfd_exit() will be
called on the
On Tue, May 07, 2013 at 02:22:32PM +0300, Michael S. Tsirkin wrote:
On Tue, May 07, 2013 at 02:52:45PM +0800, Asias He wrote:
Fix it by:
1) switching to use the new device specific fields per vq
2) not including vhost.c, instead make vhost-test.ko depend on vhost.ko.
Please split this
Fix it by switching to use the new device specific fields per vq
Signed-off-by: Asias He as...@redhat.com
---
This is for 3.10.
drivers/vhost/test.c | 35 ---
1 file changed, 24 insertions(+), 11 deletions(-)
diff --git a/drivers/vhost/test.c
On 05/08/13 12:22, Jun'ichi Nomura wrote:
Il 07/05/2013 14:06, Gleb Natapov ha scritto:
What is the output of virsh qemu-monitor-command vm12 --hmp x/i $pc
when it hangs?
# virsh qemu-monitor-command vm12 --hmp x/4i \$pc
0x000c06ca: aam$0xa
0x000c06cc: mov%ax,%bx
On Wed, May 08, 2013 at 03:24:33PM +0800, Asias He wrote:
Fix it by switching to use the new device specific fields per vq
Signed-off-by: Asias He as...@redhat.com
---
This is for 3.10.
drivers/vhost/test.c | 35 ---
1 file changed, 24 insertions(+), 11
On Wed, May 08, 2013 at 03:14:58PM +0800, Asias He wrote:
On Tue, May 07, 2013 at 02:22:32PM +0300, Michael S. Tsirkin wrote:
On Tue, May 07, 2013 at 02:52:45PM +0800, Asias He wrote:
Fix it by:
1) switching to use the new device specific fields per vq
2) not including vhost.c, instead
On Wed, May 08, 2013 at 10:59:03AM +0300, Michael S. Tsirkin wrote:
On Wed, May 08, 2013 at 03:14:58PM +0800, Asias He wrote:
On Tue, May 07, 2013 at 02:22:32PM +0300, Michael S. Tsirkin wrote:
On Tue, May 07, 2013 at 02:52:45PM +0800, Asias He wrote:
Fix it by:
1) switching to use
On Wed, May 08, 2013 at 10:56:19AM +0300, Michael S. Tsirkin wrote:
On Wed, May 08, 2013 at 03:24:33PM +0800, Asias He wrote:
Fix it by switching to use the new device specific fields per vq
Signed-off-by: Asias He as...@redhat.com
---
This is for 3.10.
drivers/vhost/test.c |
On Wed, May 08, 2013 at 04:17:19PM +0800, Asias He wrote:
On Wed, May 08, 2013 at 10:56:19AM +0300, Michael S. Tsirkin wrote:
On Wed, May 08, 2013 at 03:24:33PM +0800, Asias He wrote:
Fix it by switching to use the new device specific fields per vq
Signed-off-by: Asias He
Il 08/05/2013 09:34, Jun'ichi Nomura ha scritto:
On 05/08/13 12:22, Jun'ichi Nomura wrote:
Il 07/05/2013 14:06, Gleb Natapov ha scritto:
What is the output of virsh qemu-monitor-command vm12 --hmp x/i $pc
when it hangs?
# virsh qemu-monitor-command vm12 --hmp x/4i \$pc
0x000c06ca:
On 05/08/2013 05:20 PM, Caraman Mihai Claudiu-B02008 wrote:
-Original Message-
From: kvm-ow...@vger.kernel.org [mailto:kvm-ow...@vger.kernel.org] On
Behalf Of tiejun.chen
Sent: Wednesday, May 08, 2013 4:54 AM
To: Wood Scott-B07421
Cc: ag...@suse.de; kvm-...@vger.kernel.org;
Paolo,
The full command line is:
qemu-system-x86_64 -machine accel=kvm -m 1024m \
-net tap -net nic \
-drive file=/dev/zpool/testsrv,index=0,cache=writethrough \
-k en-us \
-no-kvm-irqchip \
-vga cirrus
I've tried any combinations of -net options, but the result is always
the
The idea of the VIRTIO_BALLOON_F_MUST_TELL_HOST feature is to let drivers
skip usage of the deflate queue when leaking the balloon (silent
deflation). Guests may benefit from silent deflate by aggressively
inflating the balloon; they know that they will be able to use ballooned
pages without
On Wed, May 08, 2013 at 10:57:29AM +0800, Asias He wrote:
In commit a0f155e96 'KVM: Initialize irqfd from kvm_init()', when
kvm_init() is called the second time (e.g kvm-amd.ko and kvm-intel.ko),
kvm_arch_init() will fail with -EEXIST, then kvm_irqfd_exit() will be
called on the error handling
On Mon, Apr 15, 2013 at 11:30:13PM -0300, Marcelo Tosatti wrote:
** Untested **.
Emulation of xcr0 writes zero guest_xcr0_loaded variable so that
subsequent VM-entry reloads CPU's xcr0 with guests xcr0 value.
However, this is incorrect because guest_xcr0_loaded variable is
read to
On Tue, May 07, 2013 at 12:09:29PM -0300, Marcelo Tosatti wrote:
On Tue, May 07, 2013 at 05:56:08PM +0300, Gleb Natapov wrote:
Yes, I am missing what Marcelo means there too. We cannot free memslot
until we unmap its rmap one way or the other.
I do not understand what are you
I have the same issue, with 3.9.1 (3.9.0 too) it hangs right after seabios...
(no problem in 3.8.11)
qemu-1.4.1
seabios-1.7.2.1
after setting emulate_invalid_guest_state=0 everything works just fine.
virsh # qemu-monitor-command vm-jack --hmp x/8i \$pc
0x000fc46b: lgdtw %cs:-0x2c60
On Wed, May 08, 2013 at 11:22:01AM +, Tomas Papan wrote:
I have the same issue, with 3.9.1 (3.9.0 too) it hangs right after seabios...
(no problem in 3.8.11)
qemu-1.4.1
seabios-1.7.2.1
Is there anything interesting in libvirt logfile?
Also please send the output of
Hi,
I found this in the libvirt (but those messages are same in 3.8.x)
anakin libvirt # cat libvirtd.log
2013-05-08 11:59:29.645+: 3750: info : libvirt version: 1.0.5
2013-05-08 11:59:29.645+: 3750: error : udevGetDMIData:1548 :
Failed to get udev device for syspath
On Wed, May 08, 2013 at 02:08:55PM +0200, Tomas Papan wrote:
Hi,
I found this in the libvirt (but those messages are same in 3.8.x)
anakin libvirt # cat libvirtd.log
2013-05-08 11:59:29.645+: 3750: info : libvirt version: 1.0.5
2013-05-08 11:59:29.645+: 3750: error :
Here they are:
(qemu) x/8i $pc
0x000fc49b: lgdtw %cs:-0x2c60
0x000fc4a1: mov%cr0,%eax
0x000fc4a4: or $0x1,%eax
0x000fc4a8: mov%eax,%cr0
0x000fc4ab: ljmpl $0x8,$0xfc4b3
0x000fc4b3: mov$0x10,%ax
0x000fc4b6: add
Hi,
No nothing, I check all logs (even syslog)
1) virsh # qemu-monitor-command vm-jack --hmp info status
VM status: running
2) morpheus@anakin ~ $ ps aux | grep vm-jack
qemu 3822 0.5 0.1 8952256 23600 ? Sl 13:59 0:08
/usr/bin/qemu-system-x86_64 -machine accel=kvm -name vm-jack
On Wed, May 08, 2013 at 02:08:55PM +0200, Tomas Papan wrote:
Hi,
I found this in the libvirt (but those messages are same in 3.8.x)
anakin libvirt # cat libvirtd.log
2013-05-08 11:59:29.645+: 3750: info : libvirt version: 1.0.5
2013-05-08 11:59:29.645+: 3750: error :
Sorry, I didn't write that well, I checked that log too... nothing is there...
anakin qemu # cat vm-jack.log
2013-05-08 13:02:52.358+: starting up
LC_ALL=C
PATH=/bin:/sbin:/bin:/sbin:/usr/bin:/usr/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:/opt/bin
HOME=/root USER=root
On Wed, May 08, 2013 at 02:51:48PM +0200, Tomas Papan wrote:
Hi,
No nothing, I check all logs (even syslog)
Yeah, since status of the vm is running you are not suppose to see
there anything.
1) virsh # qemu-monitor-command vm-jack --hmp info status
VM status: running
2) morpheus@anakin
Ok, the cpu stays at 0% when it hangs, there is only one 100% cpu peak
which happens when the vm starts ( I think this is quite normal).
However I run following command, and I stop it right when it hangs:
anakin trace2 # virsh start vm-jack; pid=`virsh qemu-monitor-command
vm-jack --hmp info cpus
On Wed, May 08, 2013 at 03:50:47PM +0200, Tomas Papan wrote:
Ok, the cpu stays at 0% when it hangs, there is only one 100% cpu peak
which happens when the vm starts ( I think this is quite normal).
However I run following command, and I stop it right when it hangs:
anakin trace2 # virsh
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patch is working :)
Thank you very much Gleb.
Regards
Tomas
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On Wed, May 08, 2013 at 04:52:52PM +0200, Tomas Papan wrote:
patch is working :)
Thank you very much Gleb.
Thank you for your patience. Curious but it was.
--
Gleb.
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the body of a message to
The invalid guest state emulation loop does not check halt_request
which causes 100% cpu loop while guest is in halt and in invalid
state, but more serious issue is that this leaves halt_request set, so
random instruction emulated by vm86 #GP exit can be interpreted
as halt which causes guest
A few notes for anyone trying this...
* I recommend the q35 machine type and using the default config
file found in the docs directory. This means your command line
should include:
-M q35 -nodefconfig -readconfig /path/to/qemu.git/docs/q35-chipset.cfg
*
- Messaggio originale -
Da: Gleb Natapov g...@redhat.com
A: kvm@vger.kernel.org
Cc: pbonz...@redhat.com, sta...@vger.kernel.org
Inviato: Mercoledì, 8 maggio 2013 17:38:44
Oggetto: [PATCH] KVM: VMX: fix halt emulation while emulating invalid guest
sate
The invalid guest state
On Wed, May 8, 2013 at 12:07 AM, Mai Daftedar mai.dafte...@gmail.com wrote:
Dear All,
I am facing a problem with booting a fully working Linux system on the Fast
Models based Cortex-A15 simulation platform.
I'm using the KVM on ARM guide to configure KVM on the ARM fast models
with
Recent KVM, since http://kerneltrap.org/mailarchive/linux-kvm/2010/5/2/6261577
switch the EFER MSR when EPT is used and the host and guest have different
NX bits. So if we add support for nested EPT (L1 guest using EPT to run L2)
and want to be able to run recent KVM as L1, we need to allow L1 to
For preparation, we just move gpte_access() and prefetch_invalid_gpte() from
mmu.c to paging_tmpl.h.
Signed-off-by: Nadav Har'El n...@il.ibm.com
Signed-off-by: Jun Nakajima jun.nakaj...@intel.com
Signed-off-by: Xinhao Xu xinhao...@intel.com
---
arch/x86/kvm/mmu.c | 30
This is the first patch in a series which adds nested EPT support to KVM's
nested VMX. Nested EPT means emulating EPT for an L1 guest so that L1 can use
EPT when running a nested guest L2. When L1 uses EPT, it allows the L2 guest
to set its own cr3 and take its own page faults without either of L0
Since link_shadow_page() is used by a routine in mmu.c, add an
EPT-specific link_shadow_page() in paging_tmp.h, rather than moving
it.
Signed-off-by: Nadav Har'El n...@il.ibm.com
Signed-off-by: Jun Nakajima jun.nakaj...@intel.com
Signed-off-by: Xinhao Xu xinhao...@intel.com
---
KVM's existing shadow MMU code already supports nested TDP. To use it, we
need to set up a new MMU context for nested EPT, and create a few callbacks
for it (nested_ept_*()). This context should also use the EPT versions of
the page table access functions (defined in the previous patch).
Then, we
The existing code for handling cr3 and related VMCS fields during nested
exit and entry wasn't correct in all cases:
If L2 is allowed to control cr3 (and this is indeed the case in nested EPT),
during nested exit we must copy the modified cr3 from vmcs02 to vmcs12, and
we forgot to do so. This
kvm_set_cr3() attempts to check if the new cr3 is a valid guest physical
address. The problem is that with nested EPT, cr3 is an *L2* physical
address, not an L1 physical address as this test expects.
As the comment above this test explains, it isn't necessary, and doesn't
correspond to anything
Some additional comments to preexisting code:
Explain who (L0 or L1) handles EPT violation and misconfiguration exits.
Don't mention shadow on either EPT or shadow as the only two options.
Signed-off-by: Nadav Har'El n...@il.ibm.com
Signed-off-by: Jun Nakajima jun.nakaj...@intel.com
Advertise the support of EPT to the L1 guest, through the appropriate MSR.
This is the last patch of the basic Nested EPT feature, so as to allow
bisection through this patch series: The guest will not see EPT support until
this last patch, and will not attempt to use the half-applied feature.
If we let L1 use EPT, we should probably also support the INVEPT instruction.
In our current nested EPT implementation, when L1 changes its EPT table for
L2 (i.e., EPT12), L0 modifies the shadow EPT table (EPT02), and in the course
of this modification already calls INVEPT. Therefore, when L1
Some trivial code cleanups not really related to nested EPT.
Signed-off-by: Nadav Har'El n...@il.ibm.com
Signed-off-by: Jun Nakajima jun.nakaj...@intel.com
Signed-off-by: Xinhao Xu xinhao...@intel.com
Reviewed-by: Paolo Bonzini pbonz...@redhat.com
---
arch/x86/kvm/vmx.c | 6 ++
1 file
Move is_rsvd_bits_set() to paging_tmpl.h so that it can be used to check
reserved bits in EPT page table entries as well.
Signed-off-by: Jun Nakajima jun.nakaj...@intel.com
Signed-off-by: Xinhao Xu xinhao...@intel.com
---
arch/x86/kvm/mmu.c | 8
arch/x86/kvm/paging_tmpl.h | 12
Add code to detect EPT misconfiguration and inject it to L1 VMM. Also,
it injects more correct exit qualification upon EPT violation to L1
VMM. Now L1 can correctly go to ept_misconfig handler (instead of
wrongly going to fast_page_fault), it will try to handle mmio page
fault, if failed, it is a
On Wed, 2013-05-08 at 19:35 -0500, Scott Wood wrote:
Sigh, and then there's this:
#ifdef CONFIG_PPC64
/* lazy EE magic */
hard_irq_disable();
if (lazy_irq_pending()) {
/* Got an interrupt in between, try again */
On 05/08/2013 05:20 PM, Caraman Mihai Claudiu-B02008 wrote:
-Original Message-
From: kvm-ow...@vger.kernel.org [mailto:kvm-ow...@vger.kernel.org] On
Behalf Of tiejun.chen
Sent: Wednesday, May 08, 2013 4:54 AM
To: Wood Scott-B07421
Cc: ag...@suse.de; kvm-ppc@vger.kernel.org;
On Wed, 2013-05-08 at 19:35 -0500, Scott Wood wrote:
Sigh, and then there's this:
#ifdef CONFIG_PPC64
/* lazy EE magic */
hard_irq_disable();
if (lazy_irq_pending()) {
/* Got an interrupt in between, try again */
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