On 08/01/2013 10:08 PM, Gleb Natapov wrote:
From: Yang Zhang yang.z.zh...@intel.com
Inject nEPT fault to L1 guest. This patch is original from Xinhao.
Reviewed-by: Xiao Guangrong xiaoguangr...@linux.vnet.ibm.com
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On 08/01/2013 10:08 PM, Gleb Natapov wrote:
From: Nadav Har'El n...@il.ibm.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
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On 08/01/2013 07:12 PM, Bharat Bhushan wrote:
KVM uses same WIM tlb attributes as the corresponding qemu pte.
For this we now search the linux pte for the requested page and
get these cache caching/coherency attributes from pte.
Signed-off-by: Bharat Bhushan bharat.bhus...@freescale.com
---
On 31.07.2013 11:20, Gleb Natapov wrote:
On Wed, Jul 31, 2013 at 11:10:01AM +0200, Stefan Pietsch wrote:
On 30.07.2013 07:31, Gleb Natapov wrote:
What happen if you run perf on your host (perf record -a)?
Do you see same NMI messages?
It seems that perf record -a triggers some delayed NMI
On 08/01/2013 10:08 PM, Gleb Natapov wrote:
From: Nadav Har'El n...@il.ibm.com
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.
Reviewed-by: Xiao
https://bugzilla.kernel.org/show_bug.cgi?id=60679
Bug ID: 60679
Summary: L2 can't boot up when creating L1 with '-cpu host'
qemu option
Product: Virtualization
Version: unspecified
Kernel Version: 3.11.0-RC1
Hardware:
On 2013-08-02 05:04, Zhang, Yang Z wrote:
Gleb Natapov wrote on 2013-08-01:
From: Nadav Har'El n...@il.ibm.com
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
On 08/01/2013 07:12 PM, Bharat Bhushan wrote:
G bit in MAS2 indicates whether the page is Guarded.
There is no reason to stop guest setting E, so allow him.
Could we merge patch 2 and 3 into only one.
Tiejun
Signed-off-by: Bharat Bhushan bharat.bhus...@freescale.com
---
v1-v2
- no
On 08/01/2013 10:08 PM, Gleb Natapov wrote:
From: Nadav Har'El n...@il.ibm.com
Some trivial code cleanups not really related to nested EPT.
Reviewed-by: Xiao Guangrong xiaoguangr...@linux.vnet.ibm.com
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Hi All,
This is KVM upstream test result against kvm.git next branch and qemu-kvm.git
uq/master branch.
kvm.git next branch: bf640876e21fe603f7f52b0c27d66b7716da0384 based
on kernel 3.11.0-rc1
qemu-kvm.git uq/master branch: 0779caeb1a17f4d3ed14e2925b36ba09b084fb7b
We found
Jan Kiszka wrote on 2013-08-02:
On 2013-08-02 05:04, Zhang, Yang Z wrote:
Gleb Natapov wrote on 2013-08-01:
From: Nadav Har'El n...@il.ibm.com
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
On 2013-08-02 09:27, Zhang, Yang Z wrote:
Jan Kiszka wrote on 2013-08-02:
On 2013-08-02 05:04, Zhang, Yang Z wrote:
Gleb Natapov wrote on 2013-08-01:
From: Nadav Har'El n...@il.ibm.com
Recent KVM, since
http://kerneltrap.org/mailarchive/linux-kvm/2010/5/2/6261577
switch the EFER MSR when
On 08/01/2013 10:08 PM, Gleb Natapov wrote:
+/* Emulate the INVEPT instruction */
+static int handle_invept(struct kvm_vcpu *vcpu)
+{
+ u32 vmx_instruction_info;
+ bool ok;
+ unsigned long type;
+ gva_t gva;
+ struct x86_exception e;
+ struct {
+ u64
On 08/01/2013 10:08 PM, Gleb Natapov wrote:
From: Nadav Har'El n...@il.ibm.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
* Raghavendra K T raghavendra...@linux.vnet.ibm.com wrote:
On 08/01/2013 02:34 PM, Raghavendra K T wrote:
On 08/01/2013 01:15 PM, Gleb Natapov wrote:
Shall I consider this as an ack for kvm part?
For everything except 18/18. For that I still want to see numbers. But
18/18 is pretty
On 08/01/2013 10:08 PM, Gleb Natapov wrote:
From: Nadav Har'El n...@il.ibm.com
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
* Raghavendra K T raghavendra...@linux.vnet.ibm.com wrote:
On 07/31/2013 11:54 AM, Gleb Natapov wrote:
On Tue, Jul 30, 2013 at 10:13:12PM +0530, Raghavendra K T wrote:
On 07/25/2013 03:08 PM, Raghavendra K T wrote:
On 07/25/2013 02:45 PM, Gleb Natapov wrote:
On Thu, Jul 25, 2013 at
On 08/02/2013 02:53 PM, Ingo Molnar wrote:
* Raghavendra K T raghavendra...@linux.vnet.ibm.com wrote:
On 08/01/2013 02:34 PM, Raghavendra K T wrote:
On 08/01/2013 01:15 PM, Gleb Natapov wrote:
Shall I consider this as an ack for kvm part?
For everything except 18/18. For that I still want
On Fri, Aug 02, 2013 at 11:25:39AM +0200, Ingo Molnar wrote:
Ingo,
Do you have any concerns reg this series? please let me know if this
looks good now to you.
I'm inclined to NAK it for excessive quotation - who knows how many people
left the discussion in disgust? Was it done to
On Fri, Aug 02, 2013 at 04:06:00PM +0800, Xiao Guangrong wrote:
On 08/01/2013 10:08 PM, Gleb Natapov wrote:
+/* Emulate the INVEPT instruction */
+static int handle_invept(struct kvm_vcpu *vcpu)
+{
+ u32 vmx_instruction_info;
+ bool ok;
+ unsigned long type;
+ gva_t gva;
https://bugzilla.kernel.org/show_bug.cgi?id=60620
--- Comment #7 from Folkert van Heusden folk...@vanheusden.com ---
Moments ago an other(!) guest on this system lost its connectivity.
I did a tcpdump on its network interface from within the host/hypervisor/dom0
and saw that traffic goes in but
On 08/02/2013 03:24 PM, Gleb Natapov wrote:
On Fri, Aug 02, 2013 at 11:25:39AM +0200, Ingo Molnar wrote:
Ingo,
Do you have any concerns reg this series? please let me know if this
looks good now to you.
I'm inclined to NAK it for excessive quotation - who knows how many people
left the
https://bugzilla.kernel.org/show_bug.cgi?id=60620
--- Comment #8 from Folkert van Heusden folk...@vanheusden.com ---
And now the firewall lost connectivity again.
- I removed all iptables rules and set the default to ACCEPT
- from within the guest I started tcpdump
- from the host I started ping
Hi,
If the result is #2, check firewalls on host and guest. Also try the
following inside the guest: disable the network interface, rmmod
virtio_net, modprobe virtio_net again, and bring the network up.
I pinged, I sniffed, I updated the bug report (it also happens with
other guests now!).
On Fri, Aug 02, 2013 at 07:19:28AM +, Ren, Yongjie wrote:
Hi All,
This is KVM upstream test result against kvm.git next branch and qemu-kvm.git
uq/master branch.
kvm.git next branch: bf640876e21fe603f7f52b0c27d66b7716da0384 based
on kernel 3.11.0-rc1
qemu-kvm.git
On Fri, Aug 02, 2013 at 11:28:45AM +, bugzilla-dae...@bugzilla.kernel.org
wrote:
https://bugzilla.kernel.org/show_bug.cgi?id=60620
--- Comment #9 from Folkert van Heusden folk...@vanheusden.com ---
Good news!
If I
- bring down all interfaces in the guest (ifdown eth0...)
- rmmod
On Tue, Jul 23, 2013 at 06:31:45PM +0200, Juan Quintela wrote:
Hi
Please, send any topic that you are interested in covering.
* libvirt requirements for:
* Checking which CPU features are exposed/required by each CPU model
+ machine-type
* Checking which CPU features are
On Tue, Jul 30, 2013 at 09:02:01PM +0800, Xiao Guangrong wrote:
Currently, kvm zaps the large spte if write-protected is needed, the later
read can fault on that spte. Actually, we can make the large spte readonly
instead of making them un-present, the page fault caused by read access can
be
On Fri, Aug 2, 2013 at 1:37 PM, folkert folk...@vanheusden.com wrote:
If the result is #2, check firewalls on host and guest. Also try the
following inside the guest: disable the network interface, rmmod
virtio_net, modprobe virtio_net again, and bring the network up.
I pinged, I sniffed, I
On Aug 2, 2013, at 10:55 PM, Marcelo Tosatti mtosa...@redhat.com wrote:
On Tue, Jul 30, 2013 at 09:02:01PM +0800, Xiao Guangrong wrote:
Currently, kvm zaps the large spte if write-protected is needed, the later
read can fault on that spte. Actually, we can make the large spte readonly
On Fri, 2013-08-02 at 15:10 +1000, Benjamin Herrenschmidt wrote:
On Thu, 2013-08-01 at 16:18 -0600, Alex Williamson wrote:
vfio-pci needs to support an interface to do hot resets (PCI parent
bridge secondary bus reset). We need this to support reset of
co-assigned devices where one or
Hi Stefan,
I pinged, I sniffed, I updated the bug report (it also happens with
other guests now!).
And the bring down interfaces / rmmod / modprobe / ifup works!
So I think something is wrong with virtio_net!
What shall I do now?
I wrote a reply earlier today but it was
On Fri, 2013-08-02 at 10:36 -0600, Alex Williamson wrote:
Also in some cases, at least for us, we have a problem where the scope
of the reset can be larger than the group ... in this case I think we
need to forbid the reset.
Interesting, I would have ventured to guess that resets are
[+cc linux-pci]
On Fri, Aug 2, 2013 at 3:28 PM, Benjamin Herrenschmidt
b...@kernel.crashing.org wrote:
Right. Another use case is, I know of devices that need a fundamental
reset (PERST) after applying a FW update.
This is a tangent from the real discussion here, but the question of
resetting
On Fri, Aug 02, 2013 at 11:42:19PM +0800, Xiao Guangrong wrote:
On Aug 2, 2013, at 10:55 PM, Marcelo Tosatti mtosa...@redhat.com wrote:
On Tue, Jul 30, 2013 at 09:02:01PM +0800, Xiao Guangrong wrote:
Currently, kvm zaps the large spte if write-protected is needed, the later
read can
On Aug 3, 2013, at 4:27 AM, Marcelo Tosatti mtosa...@redhat.com wrote:
On Fri, Aug 02, 2013 at 11:42:19PM +0800, Xiao Guangrong wrote:
On Aug 2, 2013, at 10:55 PM, Marcelo Tosatti mtosa...@redhat.com wrote:
On Tue, Jul 30, 2013 at 09:02:01PM +0800, Xiao Guangrong wrote:
Currently, kvm
On Thu, 2013-08-01 at 16:42 +0530, Bharat Bhushan wrote:
KVM need to lookup linux pte for getting TLB attributes (WIMGE).
This is similar to how book3s does.
This will be used in follow-up patches.
Signed-off-by: Bharat Bhushan bharat.bhus...@freescale.com
---
v1-v2
- This is a new
On Fri, 2013-08-02 at 16:49 -0600, Bjorn Helgaas wrote:
[+cc linux-pci]
On Fri, Aug 2, 2013 at 3:28 PM, Benjamin Herrenschmidt
b...@kernel.crashing.org wrote:
Right. Another use case is, I know of devices that need a fundamental
reset (PERST) after applying a FW update.
This is a
On Thu, Aug 01, 2013 at 04:42:38PM +0530, Bharat Bhushan wrote:
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index 17722d8..eb2 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -697,7 +697,7 @@ int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct
On Sat, 2013-08-03 at 09:15 +1000, Benjamin Herrenschmidt wrote:
On Fri, 2013-08-02 at 16:49 -0600, Bjorn Helgaas wrote:
[+cc linux-pci]
On Fri, Aug 2, 2013 at 3:28 PM, Benjamin Herrenschmidt
b...@kernel.crashing.org wrote:
Right. Another use case is, I know of devices that need a
On Fri, 2013-08-02 at 17:58 -0500, Scott Wood wrote:
What about 64-bit PTEs on 32-bit kernels?
In any case, this code does not belong in KVM. It should be in the
main
PPC mm code, even if KVM is the only user.
Also don't we do similar things in BookS KVM ? At the very least that
sutff
On Fri, 2013-08-02 at 17:37 -0600, Alex Williamson wrote:
Yes.
We have that similar issue with error handling, when the driver doesn't
have the right hooks, we simulate an unplug, reset, then replug.
Maybe we could provide generic helpers to do that...
Devices going away and
-Original Message-
From: Benjamin Herrenschmidt [mailto:b...@kernel.crashing.org]
Sent: Saturday, August 03, 2013 4:47 AM
To: Wood Scott-B07421
Cc: Bhushan Bharat-R65777; ag...@suse.de; kvm-...@vger.kernel.org;
kvm@vger.kernel.org; linuxppc-...@lists.ozlabs.org; Bhushan
-Original Message-
From: Wood Scott-B07421
Sent: Saturday, August 03, 2013 5:05 AM
To: Bhushan Bharat-R65777
Cc: b...@kernel.crashing.org; ag...@suse.de; kvm-...@vger.kernel.org;
kvm@vger.kernel.org; linuxppc-...@lists.ozlabs.org; Bhushan Bharat-R65777
Subject: Re: [PATCH 6/6 v2]
On Sat, 2013-08-03 at 02:58 +, Bhushan Bharat-R65777 wrote:
One of the problem I saw was that if I put this code in
asm/pgtable-32.h and asm/pgtable-64.h then pte_persent() and other
friend function (on which this code depends) are defined in pgtable.h.
And pgtable.h includes
On Sat, 2013-08-03 at 03:11 +, Bhushan Bharat-R65777 wrote:
Could you explain why we need to set dirty/referenced on the PTE, when we
didn't
need to do that before? All we're getting from the PTE is wimg.
We have MMU notifiers to take care of the page being unmapped, and we've
On Tue, 30 Jul 2013 21:01:58 +0800
Xiao Guangrong xiaoguangr...@linux.vnet.ibm.com wrote:
Background
==
Currently, when mark memslot dirty logged or get dirty page, we need to
write-protect large guest memory, it is the heavy work, especially, we need to
hold mmu-lock which is also
On 08/01/2013 07:12 PM, Bharat Bhushan wrote:
KVM uses same WIM tlb attributes as the corresponding qemu pte.
For this we now search the linux pte for the requested page and
get these cache caching/coherency attributes from pte.
Signed-off-by: Bharat Bhushan bharat.bhus...@freescale.com
---
On 08/01/2013 07:12 PM, Bharat Bhushan wrote:
KVM need to lookup linux pte for getting TLB attributes (WIMGE).
This is similar to how book3s does.
This will be used in follow-up patches.
Signed-off-by: Bharat Bhushan bharat.bhus...@freescale.com
---
v1-v2
- This is a new change in this
On 08/01/2013 07:12 PM, Bharat Bhushan wrote:
G bit in MAS2 indicates whether the page is Guarded.
There is no reason to stop guest setting E, so allow him.
Could we merge patch 2 and 3 into only one.
Tiejun
Signed-off-by: Bharat Bhushan bharat.bhus...@freescale.com
---
v1-v2
- no
On Thu, 2013-08-01 at 16:42 +0530, Bharat Bhushan wrote:
KVM need to lookup linux pte for getting TLB attributes (WIMGE).
This is similar to how book3s does.
This will be used in follow-up patches.
Signed-off-by: Bharat Bhushan bharat.bhus...@freescale.com
---
v1-v2
- This is a new
On Thu, Aug 01, 2013 at 04:42:38PM +0530, Bharat Bhushan wrote:
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index 17722d8..eb2 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -697,7 +697,7 @@ int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct
On Fri, 2013-08-02 at 17:58 -0500, Scott Wood wrote:
What about 64-bit PTEs on 32-bit kernels?
In any case, this code does not belong in KVM. It should be in the
main
PPC mm code, even if KVM is the only user.
Also don't we do similar things in BookS KVM ? At the very least that
sutff
-Original Message-
From: Benjamin Herrenschmidt [mailto:b...@kernel.crashing.org]
Sent: Saturday, August 03, 2013 4:47 AM
To: Wood Scott-B07421
Cc: Bhushan Bharat-R65777; ag...@suse.de; kvm-ppc@vger.kernel.org;
k...@vger.kernel.org; linuxppc-...@lists.ozlabs.org; Bhushan
-Original Message-
From: Wood Scott-B07421
Sent: Saturday, August 03, 2013 5:05 AM
To: Bhushan Bharat-R65777
Cc: b...@kernel.crashing.org; ag...@suse.de; kvm-ppc@vger.kernel.org;
k...@vger.kernel.org; linuxppc-...@lists.ozlabs.org; Bhushan Bharat-R65777
Subject: Re: [PATCH 6/6 v2]
On Sat, 2013-08-03 at 02:58 +, Bhushan Bharat-R65777 wrote:
One of the problem I saw was that if I put this code in
asm/pgtable-32.h and asm/pgtable-64.h then pte_persent() and other
friend function (on which this code depends) are defined in pgtable.h.
And pgtable.h includes
On Sat, 2013-08-03 at 03:11 +, Bhushan Bharat-R65777 wrote:
Could you explain why we need to set dirty/referenced on the PTE, when we
didn't
need to do that before? All we're getting from the PTE is wimg.
We have MMU notifiers to take care of the page being unmapped, and we've
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