On Wed, Dec 03, 2014 at 05:50:33PM +0800, Zhang Haoyu wrote:
Hi,
EXIT_REASON_EPT_VIOLATION's corresponding handle is handle_ept_violation(),
and EXIT_REASON_EPT_MISCONFIG's corresponding handle is
handle_ept_misconfig(),
what's the difference between them?
I read the SDM-3C 28.2.3
On Wed, Dec 03, 2014 at 06:12:10PM +0800, Zhang Haoyu wrote:
Hi,
EXIT_REASON_EPT_VIOLATION's corresponding handle is
handle_ept_violation(),
and EXIT_REASON_EPT_MISCONFIG's corresponding handle is
handle_ept_misconfig(),
what's the difference between them?
I read the
On Thu, Nov 20, 2014 at 02:59:36PM +0800, Zhang Haoyu wrote:
On 20/11/2014 03:20, Zhang Haoyu wrote:
Hi all,
If I press the one of Insert/Delete/Home/End/PageUp/PageDown/UpArrow/
DownArrow/LeftArrow/RightArrow key w/o releasing, then lots of interrupts
will be injected to
On Wed, Nov 19, 2014 at 10:05:43PM +0100, Paolo Bonzini wrote:
KVM for ia64 has been marked as broken not just once, but twice even,
and the last patch from the maintainer is now roughly 5 years old.
Time for it to rest in piece.
Acked-by: Gleb Natapov g...@kernel.org
Next step is to move
On Sun, Nov 16, 2014 at 11:18:28PM +0100, Samuel Thibault wrote:
Hello,
Jan Kiszka, le Wed 12 Nov 2014 00:42:52 +0100, a écrit :
On 2014-11-11 19:55, Samuel Thibault wrote:
jenkins.debian.net is running inside a KVM VM, and it runs nested
KVM guests for its installation attempts. This
On Mon, Nov 17, 2014 at 10:10:25AM +0100, Samuel Thibault wrote:
Jan Kiszka, le Mon 17 Nov 2014 10:04:37 +0100, a écrit :
On 2014-11-17 10:03, Samuel Thibault wrote:
Gleb Natapov, le Mon 17 Nov 2014 10:58:45 +0200, a écrit :
Do you know how gnumach timekeeping works? Does it have a timer
On Mon, Nov 17, 2014 at 12:38:16PM +0200, Michael S. Tsirkin wrote:
On Mon, Nov 17, 2014 at 09:44:23AM +0200, Gleb Natapov wrote:
On Sun, Nov 16, 2014 at 08:56:04PM +0200, Michael S. Tsirkin wrote:
On Sun, Nov 16, 2014 at 06:18:18PM +0200, Gleb Natapov wrote:
Hi Michael,
I am
On Mon, Nov 17, 2014 at 01:58:20PM +0200, Michael S. Tsirkin wrote:
On Mon, Nov 17, 2014 at 01:22:07PM +0200, Gleb Natapov wrote:
On Mon, Nov 17, 2014 at 12:38:16PM +0200, Michael S. Tsirkin wrote:
On Mon, Nov 17, 2014 at 09:44:23AM +0200, Gleb Natapov wrote:
On Sun, Nov 16, 2014 at 08
On Tue, Nov 18, 2014 at 11:41:11AM +0800, Jason Wang wrote:
On 11/18/2014 09:37 AM, Zhang Haoyu wrote:
On Mon, Nov 17, 2014 at 01:58:20PM +0200, Michael S. Tsirkin wrote:
On Mon, Nov 17, 2014 at 01:22:07PM +0200, Gleb Natapov wrote:
On Mon, Nov 17, 2014 at 12:38:16PM +0200, Michael S
Hi Michael,
I am playing with vhost multiqueue capability and have a question about
vhost multiqueue and RSS (receive side steering). My setup has Mellanox
ConnectX-3 NIC which supports multiqueue and RSS. Network related
parameters for qemu are:
-netdev
On Mon, Nov 17, 2014 at 01:30:06PM +0800, Jason Wang wrote:
On 11/17/2014 02:56 AM, Michael S. Tsirkin wrote:
On Sun, Nov 16, 2014 at 06:18:18PM +0200, Gleb Natapov wrote:
Hi Michael,
I am playing with vhost multiqueue capability and have a question about
vhost multiqueue and RSS
On Sun, Nov 16, 2014 at 08:56:04PM +0200, Michael S. Tsirkin wrote:
On Sun, Nov 16, 2014 at 06:18:18PM +0200, Gleb Natapov wrote:
Hi Michael,
I am playing with vhost multiqueue capability and have a question about
vhost multiqueue and RSS (receive side steering). My setup has Mellanox
On Wed, Nov 12, 2014 at 12:33:32PM +0100, Paolo Bonzini wrote:
On 10/11/2014 18:38, Gleb Natapov wrote:
On Mon, Nov 10, 2014 at 06:28:25PM +0100, Paolo Bonzini wrote:
On 10/11/2014 15:23, Avi Kivity wrote:
It's not surprising [1]. Since the meaning of some PTE bits change [2
On Wed, Nov 12, 2014 at 04:26:29PM +0100, Paolo Bonzini wrote:
On 12/11/2014 16:22, Gleb Natapov wrote:
Nehalem results:
userspace exit, urn 17560 17726 17628 17572 17417
lightweight exit, urn 3316 3342 3342 3319 3328
userspace exit
On Mon, Nov 10, 2014 at 11:03:35AM +0100, Paolo Bonzini wrote:
On 09/11/2014 17:36, Andy Lutomirski wrote:
The purpose of vmexit test is to show us various overheads, so why not
measure EFER switch overhead by having two tests one with equal EFER
another with different EFER, instead of
On Mon, Nov 10, 2014 at 06:28:25PM +0100, Paolo Bonzini wrote:
On 10/11/2014 15:23, Avi Kivity wrote:
It's not surprising [1]. Since the meaning of some PTE bits change [2],
the TLB has to be flushed. In VMX we have VPIDs, so we only need to flush
if EFER changed between two invocations
On Sat, Nov 08, 2014 at 08:44:42AM -0800, Andy Lutomirski wrote:
On Sat, Nov 8, 2014 at 8:00 AM, Andy Lutomirski l...@amacapital.net wrote:
On Nov 8, 2014 4:01 AM, Gleb Natapov g...@kernel.org wrote:
On Fri, Nov 07, 2014 at 09:59:55AM -0800, Andy Lutomirski wrote:
On Thu, Nov 6, 2014
On Fri, Nov 07, 2014 at 09:59:55AM -0800, Andy Lutomirski wrote:
On Thu, Nov 6, 2014 at 11:17 PM, Paolo Bonzini pbonz...@redhat.com wrote:
On 07/11/2014 07:27, Andy Lutomirski wrote:
Is there an easy benchmark that's sensitive to the time it takes to
round-trip from userspace to guest
On Mon, Oct 13, 2014 at 05:52:38AM -0300, Marcelo Tosatti wrote:
On Fri, Oct 10, 2014 at 04:09:29PM +0300, Gleb Natapov wrote:
On Wed, Oct 08, 2014 at 04:22:31PM -0300, Marcelo Tosatti wrote:
Argh, lets try again:
skip_pinned = true
--
mark
On Wed, Oct 08, 2014 at 04:22:31PM -0300, Marcelo Tosatti wrote:
Argh, lets try again:
skip_pinned = true
--
mark page dirty, keep spte intact
called from get dirty log path.
skip_pinned = false
---
reload remote mmu
On Mon, Oct 06, 2014 at 02:19:32PM -0300, Marcelo Tosatti wrote:
On Sat, Oct 04, 2014 at 10:23:32AM +0300, Gleb Natapov wrote:
On Tue, Sep 09, 2014 at 12:28:11PM -0300, Marcelo Tosatti wrote:
On Mon, Jul 21, 2014 at 04:14:24PM +0300, Gleb Natapov wrote:
On Wed, Jul 09, 2014 at 04:12:53PM
On Wed, Oct 08, 2014 at 02:15:34PM -0300, Marcelo Tosatti wrote:
On Wed, Oct 08, 2014 at 09:56:36AM +0300, Gleb Natapov wrote:
On Mon, Oct 06, 2014 at 02:19:32PM -0300, Marcelo Tosatti wrote:
On Sat, Oct 04, 2014 at 10:23:32AM +0300, Gleb Natapov wrote:
On Tue, Sep 09, 2014 at 12:28:11PM
On Tue, Sep 30, 2014 at 08:49:17PM +0300, Nadav Amit wrote:
Determining flat mode according to cid_mask is wrong, since currently KVM
supports zero clusters in x2apic mode. Use ldr_bits instead.
As a comment above the 'if' you are fixing says the code assumes all APICs are
in
the same mode (if
Hi,
On Tue, Sep 30, 2014 at 09:07:22PM -0500, Wei Huang wrote:
Hi Paolo and Gleb,
The attached file is a preliminary version of AMD vPMU support for KVM.
Currently I am working on a formal patch set; but realized that there are
some design choice to make (see below). I thought it is better
On Tue, Sep 09, 2014 at 12:28:11PM -0300, Marcelo Tosatti wrote:
On Mon, Jul 21, 2014 at 04:14:24PM +0300, Gleb Natapov wrote:
On Wed, Jul 09, 2014 at 04:12:53PM -0300, mtosa...@redhat.com wrote:
Reload remote vcpus MMU from GET_DIRTY_LOG codepath, before
deleting a pinned spte
On Mon, Sep 22, 2014 at 09:29:19PM +0200, Paolo Bonzini wrote:
Il 22/09/2014 21:20, Christian Borntraeger ha scritto:
while using trinity to fuzz KVM, we noticed long stalls on invalid ioctls.
Lets bail out early on invalid ioctls. or similar?
Okay. David, can you explain how you found
On Thu, Sep 18, 2014 at 03:00:05PM -0700, Andy Lutomirski wrote:
On Thu, Sep 18, 2014 at 2:46 PM, David Hepkin david...@microsoft.com wrote:
I suggest we come to consensus on a specific CPUID leaf where an OS needs
to look to determine if a hypervisor supports this capability. We could
On Fri, Sep 19, 2014 at 09:40:07AM -0700, H. Peter Anvin wrote:
On 09/19/2014 09:37 AM, Gleb Natapov wrote:
Linux detects what hypervior it runs on very early
Not anywhere close to early enough. We're talking for uses like kASLR.
Still to early to do:
h = cpuid(HYPERVIOR_SIGNATURE
On Fri, Sep 19, 2014 at 10:08:20AM -0700, H. Peter Anvin wrote:
On 09/19/2014 09:53 AM, Gleb Natapov wrote:
On Fri, Sep 19, 2014 at 09:40:07AM -0700, H. Peter Anvin wrote:
On 09/19/2014 09:37 AM, Gleb Natapov wrote:
Linux detects what hypervior it runs on very early
Not anywhere close
On Fri, Sep 19, 2014 at 10:18:37AM -0700, H. Peter Anvin wrote:
On 09/19/2014 10:15 AM, Gleb Natapov wrote:
On Fri, Sep 19, 2014 at 10:08:20AM -0700, H. Peter Anvin wrote:
On 09/19/2014 09:53 AM, Gleb Natapov wrote:
On Fri, Sep 19, 2014 at 09:40:07AM -0700, H. Peter Anvin wrote:
On 09/19
On Fri, Sep 19, 2014 at 10:21:27AM -0700, Andy Lutomirski wrote:
On Sep 19, 2014 9:53 AM, Gleb Natapov g...@kernel.org wrote:
On Fri, Sep 19, 2014 at 09:40:07AM -0700, H. Peter Anvin wrote:
On 09/19/2014 09:37 AM, Gleb Natapov wrote:
Linux detects what hypervior it runs on very
On Fri, Sep 19, 2014 at 11:02:38AM -0700, Andy Lutomirski wrote:
On Fri, Sep 19, 2014 at 10:49 AM, Gleb Natapov g...@kernel.org wrote:
On Fri, Sep 19, 2014 at 10:18:37AM -0700, H. Peter Anvin wrote:
On 09/19/2014 10:15 AM, Gleb Natapov wrote:
On Fri, Sep 19, 2014 at 10:08:20AM -0700, H
On Fri, Sep 19, 2014 at 11:20:49AM -0700, Andy Lutomirski wrote:
[cc: Alok Kataria at VMware]
On Fri, Sep 19, 2014 at 11:12 AM, Gleb Natapov g...@kernel.org wrote:
On Fri, Sep 19, 2014 at 11:02:38AM -0700, Andy Lutomirski wrote:
On Fri, Sep 19, 2014 at 10:49 AM, Gleb Natapov g
On Thu, Sep 18, 2014 at 08:29:17AM +0800, Wanpeng Li wrote:
Hi Andres,
On Wed, Sep 17, 2014 at 10:51:48AM -0700, Andres Lagar-Cavilla wrote:
[...]
static inline int check_user_page_hwpoison(unsigned long addr)
{
int rc, flags = FOLL_TOUCH | FOLL_HWPOISON | FOLL_WRITE;
@@ -1177,9
on the IO. This is a bad thing, as other mmap semaphore users
now stall as a function of swap or filemap latency.
This patch ensures both the regular and async PF path re-enter the
fault allowing for the mmap semaphore to be relinquished in the case
of IO wait.
Reviewed-by: Gleb Natapov g
On Mon, Sep 15, 2014 at 01:11:25PM -0700, Andres Lagar-Cavilla wrote:
When KVM handles a tdp fault it uses FOLL_NOWAIT. If the guest memory has been
swapped out or is behind a filemap, this will trigger async readahead and
return immediately. The rationale is that KVM will kick back the guest
On Wed, Sep 17, 2014 at 01:27:14PM +0200, Radim Krčmář wrote:
2014-09-17 13:26+0300, Gleb Natapov:
For async_pf_execute() you do not need to even retry. Next guest's page
fault
will retry it for you.
Wouldn't that be a waste of vmentries?
This is how it will work with or without
On Wed, Sep 17, 2014 at 10:00:32AM -0700, Andres Lagar-Cavilla wrote:
On Wed, Sep 17, 2014 at 4:42 AM, Gleb Natapov g...@kernel.org wrote:
On Wed, Sep 17, 2014 at 01:27:14PM +0200, Radim Krčmář wrote:
2014-09-17 13:26+0300, Gleb Natapov:
For async_pf_execute() you do not need to even retry
On Wed, Sep 17, 2014 at 10:13:45AM -0700, Andres Lagar-Cavilla wrote:
On Wed, Sep 17, 2014 at 10:08 AM, Gleb Natapov g...@kernel.org wrote:
On Wed, Sep 17, 2014 at 10:00:32AM -0700, Andres Lagar-Cavilla wrote:
On Wed, Sep 17, 2014 at 4:42 AM, Gleb Natapov g...@kernel.org wrote:
On Wed, Sep
On Thu, Sep 11, 2014 at 11:21:49AM +0200, Paolo Bonzini wrote:
Il 11/09/2014 07:38, Tang Chen ha scritto:
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 63c4c3e..da6d55d 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -7093,6 +7093,11 @@ static void
On Thu, Sep 11, 2014 at 12:47:16PM +0200, Paolo Bonzini wrote:
Il 11/09/2014 12:12, Gleb Natapov ha scritto:
On Thu, Sep 11, 2014 at 11:21:49AM +0200, Paolo Bonzini wrote:
Il 11/09/2014 07:38, Tang Chen ha scritto:
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 63c4c3e
On Thu, Sep 11, 2014 at 03:05:05PM +0200, Paolo Bonzini wrote:
Il 11/09/2014 13:30, Gleb Natapov ha scritto:
+vmcs_write64(APIC_ACCESS_ADDR,
page_to_phys(page));
+/*
+ * Do not pin apic access page in memory so
On Thu, Sep 11, 2014 at 04:06:58PM +0200, Paolo Bonzini wrote:
Il 11/09/2014 15:59, Gleb Natapov ha scritto:
Suppose vmcs01-APIC_ACCESS_ADDR = 0xf000. During L2 entry
vmcs02-APIC_ACCESS_ADDR is set to 0xf000 too (by prepare_vmcs02). Now
0xf000 is migrated to 0x8000, mmu notifier
On Thu, Sep 11, 2014 at 04:24:04PM +0200, Paolo Bonzini wrote:
Il 11/09/2014 16:21, Gleb Natapov ha scritto:
As far as I can tell the if that is needed there is:
if (!is_guest_mode() || !(vmcs12-secondary_vm_exec_control
ECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES))
write
On Thu, Sep 11, 2014 at 04:37:39PM +0200, Paolo Bonzini wrote:
Il 11/09/2014 16:31, Gleb Natapov ha scritto:
What if the page being swapped out is L1's APIC access page? We don't
run prepare_vmcs12 in that case because it's an L2-L0-L2 entry, so we
need to do something.
We will do
On Wed, Aug 27, 2014 at 06:17:36PM +0800, Tang Chen wrote:
We have APIC_DEFAULT_PHYS_BASE defined as 0xfee0, which is also the
address of
apic access page. So use this macro.
Reviewed-by: Gleb Natapov g...@kernel.org
Signed-off-by: Tang Chen tangc...@cn.fujitsu.com
---
arch/x86/kvm
, it cannot be migrated/hot-removed. After this patch, since
kvm_arch-ept_identity_pagetable is removed, ept identity pagetable page
is no longer pinned in memory. And it can be migrated/hot-removed.
Reviewed-by: Gleb Natapov g...@kernel.org
Signed-off-by: Tang Chen tangc
On Tue, Sep 09, 2014 at 03:13:07PM +0800, tangchen wrote:
Hi Gleb,
On 09/03/2014 11:04 PM, Gleb Natapov wrote:
On Wed, Sep 03, 2014 at 09:42:30AM +0800, tangchen wrote:
Hi Gleb,
On 09/03/2014 12:00 AM, Gleb Natapov wrote:
..
+static void vcpu_reload_apic_access_page(struct kvm_vcpu
On Thu, Sep 04, 2014 at 07:44:51PM +0200, Paolo Bonzini wrote:
Il 04/09/2014 17:05, Gleb Natapov ha scritto:
If you do that, KVM gets down to the if (writeback) and writes the
ctxt-eip from L2 into the L1 EIP.
Heh, that's a bummer. We should not write back if an instruction caused
On Tue, Sep 02, 2014 at 05:13:49PM +0200, Paolo Bonzini wrote:
This is required for the following patch to work correctly. If a nested page
fault happens during emulation, we must inject a vmexit, not a page fault.
Luckily we already have the required machinery: it is enough to return
On Thu, Sep 04, 2014 at 04:12:19PM +0200, Paolo Bonzini wrote:
Il 04/09/2014 09:02, Gleb Natapov ha scritto:
On Tue, Sep 02, 2014 at 05:13:49PM +0200, Paolo Bonzini wrote:
This is required for the following patch to work correctly. If a nested
page
fault happens during emulation, we
On Wed, Sep 03, 2014 at 09:42:30AM +0800, tangchen wrote:
Hi Gleb,
On 09/03/2014 12:00 AM, Gleb Natapov wrote:
..
+static void vcpu_reload_apic_access_page(struct kvm_vcpu *vcpu)
+{
+/*
+ * apic access page could be migrated. When the page is being migrated,
+ * GUP
On Wed, Aug 27, 2014 at 06:17:40PM +0800, Tang Chen wrote:
This patch only handle L1 and L2 vm share one apic access page situation.
When L1 vm is running, if the shared apic access page is migrated,
mmu_notifier will
request all vcpus to exit to L0, and reload apic access page physical
On Wed, Aug 27, 2014 at 06:17:39PM +0800, Tang Chen wrote:
apic access page is pinned in memory. As a result, it cannot be
migrated/hot-removed.
Actually, it is not necessary to be pinned.
The hpa of apic access page is stored in VMCS APIC_ACCESS_ADDR pointer. When
the page is migrated,
On Tue, Aug 26, 2014 at 04:58:34PM -0700, Andy Lutomirski wrote:
hpa pointed out that the ABI that I chose (an MSR from the KVM range
and a KVM cpuid bit) is unnecessarily KVM-specific. It would be nice
to allocate an MSR that everyone involved can agree on and, rather
than relying on a cpuid
On Mon, Aug 25, 2014 at 11:16:34AM +0800, Dennis Chen wrote:
On Sun, Aug 24, 2014 at 5:38 PM, Gleb Natapov g...@kernel.org wrote:
On Sun, Aug 24, 2014 at 11:54:32AM +0800, Dennis Chen wrote:
This patch is used to construct the eptp in vmx mode with values
readed from MSR according
On Wed, Jul 09, 2014 at 04:12:53PM -0300, mtosa...@redhat.com wrote:
Reload remote vcpus MMU from GET_DIRTY_LOG codepath, before
deleting a pinned spte.
Signed-off-by: Marcelo Tosatti mtosa...@redhat.com
---
arch/x86/kvm/mmu.c | 29 +++--
1 file changed, 23
On Fri, Jul 18, 2014 at 05:05:20PM +0800, Tang Chen wrote:
Hi Gleb,
On 07/17/2014 09:57 PM, Gleb Natapov wrote:
On Thu, Jul 17, 2014 at 09:34:20PM +0800, Tang Chen wrote:
Hi Gleb,
On 07/15/2014 08:40 PM, Gleb Natapov wrote:
..
And yes, we have the problem you said here. We can
On Thu, Jul 17, 2014 at 09:34:20PM +0800, Tang Chen wrote:
Hi Gleb,
On 07/15/2014 08:40 PM, Gleb Natapov wrote:
..
And yes, we have the problem you said here. We can migrate the page while L2
vm is running.
So I think we should enforce L2 vm to exit to L1. Right ?
We can request
On Tue, Jul 15, 2014 at 07:48:06PM -0700, Andy Lutomirski wrote:
virtio-rng is both too complicated and insufficient for initial rng
seeding. It's far too complicated to use for KASLR or any other
early boot random number needs. It also provides /dev/random-style
bits, which means that
On Wed, Jul 16, 2014 at 09:10:27AM +0200, Daniel Borkmann wrote:
On 07/16/2014 08:41 AM, Gleb Natapov wrote:
On Tue, Jul 15, 2014 at 07:48:06PM -0700, Andy Lutomirski wrote:
virtio-rng is both too complicated and insufficient for initial rng
seeding. It's far too complicated to use for KASLR
On Wed, Jul 16, 2014 at 04:32:19PM +0200, Paolo Bonzini wrote:
Il 16/07/2014 16:07, Andy Lutomirski ha scritto:
This patch has nothing whatsoever to do with how much I trust the CPU
vs the hypervisor. It's for the enormous installed base of machines
without RDRAND.
Ok. I think an MSR is
On Wed, Jul 16, 2014 at 09:13:23AM -0700, H. Peter Anvin wrote:
On 07/16/2014 09:08 AM, Paolo Bonzini wrote:
Il 16/07/2014 18:03, H. Peter Anvin ha scritto:
I suggested emulating RDRAND *but not set the CPUID bit*. We already
developed a protocol in KVM/Qemu to enumerate emulated features
On Tue, Jul 15, 2014 at 01:52:40PM +0200, Jan Kiszka wrote:
On 2014-07-14 16:58, Gleb Natapov wrote:
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index ffbe557..7080eda 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -5929,6 +5929,18 @@ static void vcpu_scan_ioapic
On Tue, Jul 15, 2014 at 08:28:22PM +0800, Tang Chen wrote:
On 07/15/2014 08:09 PM, Gleb Natapov wrote:
On Tue, Jul 15, 2014 at 01:52:40PM +0200, Jan Kiszka wrote:
..
I cannot follow your concerns yet. Specifically, how should
APIC_ACCESS_ADDR (the VMCS field, right?) change while L2
On Tue, Jul 15, 2014 at 03:10:15PM +0200, Jan Kiszka wrote:
On 2014-07-15 14:40, Gleb Natapov wrote:
..
7922 if (!vmx-nested.apic_access_page)
7923 exec_control =
7924 ~SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES;
7925
On Tue, Jul 15, 2014 at 08:54:01PM +0800, Tang Chen wrote:
On 07/15/2014 08:40 PM, Gleb Natapov wrote:
On Tue, Jul 15, 2014 at 08:28:22PM +0800, Tang Chen wrote:
On 07/15/2014 08:09 PM, Gleb Natapov wrote:
On Tue, Jul 15, 2014 at 01:52:40PM +0200, Jan Kiszka wrote:
..
I cannot follow
On Mon, Jul 14, 2014 at 05:17:04PM +0800, Tang Chen wrote:
On 07/12/2014 03:44 PM, Gleb Natapov wrote:
On Wed, Jul 09, 2014 at 10:08:03AM +0800, Tang Chen wrote:
kvm_arch-ept_identity_pagetable holds the ept identity pagetable page. But
it is never used to refer to the page at all.
In vcpu
CCing Jan to check my nested kvm findings below.
On Mon, Jul 14, 2014 at 03:57:09PM +0800, Tang Chen wrote:
Hi Gleb,
Thanks for the reply. Please see below.
On 07/12/2014 04:04 PM, Gleb Natapov wrote:
On Tue, Jul 08, 2014 at 09:01:32PM +0800, Tang Chen wrote:
apic access page is pinned
On Wed, Jul 09, 2014 at 10:08:03AM +0800, Tang Chen wrote:
kvm_arch-ept_identity_pagetable holds the ept identity pagetable page. But
it is never used to refer to the page at all.
In vcpu initialization, it indicates two things:
1. indicates if ept page is allocated
2. indicates if a memory
On Tue, Jul 08, 2014 at 09:01:32PM +0800, Tang Chen wrote:
apic access page is pinned in memory. As a result, it cannot be
migrated/hot-removed.
Actually, it is not necessary to be pinned.
The hpa of apic access page is stored in VMCS APIC_ACCESS_ADDR pointer. When
the page is migrated,
On Mon, Jul 07, 2014 at 02:42:27PM +0300, Nadav Amit wrote:
Tang,
Running some (unrelated) tests I see that KVM does not handle APIC base
relocation correctly. When the base is changed, kvm_lapic_set_base just
changes lapic-base_address without taking further action (i.e., modifying
the
On Mon, Jul 07, 2014 at 03:10:23PM +0300, Nadav Amit wrote:
On 7/7/14, 2:54 PM, Gleb Natapov wrote:
On Mon, Jul 07, 2014 at 02:42:27PM +0300, Nadav Amit wrote:
Tang,
Running some (unrelated) tests I see that KVM does not handle APIC base
relocation correctly. When the base is changed
On Sat, Jul 05, 2014 at 09:47:54AM +0200, Jan Kiszka wrote:
From: Jan Kiszka jan.kis...@siemens.com
We are able to use x2APIC mode in the absence of interrupt remapping on
certain hypervisors. So it if fine to disable IRQ_REMAP without having
to give up x2APIC support.
FWIW I did similar
On Sun, Jul 06, 2014 at 05:24:27PM +0200, Jan Kiszka wrote:
On 2014-07-06 17:12, Gleb Natapov wrote:
On Sat, Jul 05, 2014 at 09:47:54AM +0200, Jan Kiszka wrote:
From: Jan Kiszka jan.kis...@siemens.com
We are able to use x2APIC mode in the absence of interrupt remapping on
certain
On Sun, Jul 06, 2014 at 05:49:09PM +0200, Jan Kiszka wrote:
On 2014-07-06 17:41, Gleb Natapov wrote:
On Sun, Jul 06, 2014 at 05:24:27PM +0200, Jan Kiszka wrote:
On 2014-07-06 17:12, Gleb Natapov wrote:
On Sat, Jul 05, 2014 at 09:47:54AM +0200, Jan Kiszka wrote:
From: Jan Kiszka jan.kis
On Fri, Jul 04, 2014 at 10:36:06AM +0800, Tang Chen wrote:
Hi Gleb,
On 07/03/2014 12:34 AM, Gleb Natapov wrote:
On Wed, Jul 02, 2014 at 05:00:36PM +0800, Tang Chen wrote:
ept identity pagetable is pinned in memory, and as a result it cannot be
migrated/hot-removed.
But actually
On Fri, Jul 04, 2014 at 10:18:25AM +0800, Tang Chen wrote:
Hi Gleb,
Thanks for the advices. Please see below.
On 07/03/2014 09:55 PM, Gleb Natapov wrote:
..
@@ -575,6 +575,7 @@ struct kvm_arch {
unsigned int tss_addr;
struct page *apic_access_page;
+ bool
On Thu, Jul 03, 2014 at 09:17:59AM +0800, Tang Chen wrote:
Hi Gleb,
On 07/02/2014 05:00 PM, Tang Chen wrote:
Hi Gleb, Marcelo,
Please help to review this patch-set.
NOTE: This patch-set doesn't work properly.
ept identity pagetable and apic access page in kvm are pinned in memory.
On Wed, Jul 02, 2014 at 05:00:37PM +0800, Tang Chen wrote:
apic access page is pinned in memory, and as a result it cannot be
migrated/hot-removed.
Actually it doesn't need to be pinned in memory.
This patch introduces a new vcpu request: KVM_REQ_MIGRATE_EPT. This requet
will be made when
On Wed, Jul 02, 2014 at 05:00:35PM +0800, Tang Chen wrote:
Define guest phys_addr of apic access page.
---
arch/x86/include/asm/vmx.h | 2 +-
arch/x86/kvm/svm.c | 3 ++-
arch/x86/kvm/vmx.c | 7 ---
3 files changed, 7 insertions(+), 5 deletions(-)
diff --git
On Wed, Jul 02, 2014 at 05:00:36PM +0800, Tang Chen wrote:
ept identity pagetable is pinned in memory, and as a result it cannot be
migrated/hot-removed.
But actually it doesn't need to be pinned in memory.
This patch introduces a new vcpu request: KVM_REQ_MIGRATE_EPT to reset ept
On Mon, Jun 30, 2014 at 05:59:02PM -0300, Marcelo Tosatti wrote:
On Fri, Jun 20, 2014 at 01:46:10PM +0300, Gleb Natapov wrote:
On Thu, Jun 19, 2014 at 03:40:31PM -0300, Marcelo Tosatti wrote:
On Thu, Jun 19, 2014 at 11:17:19AM +0300, Gleb Natapov wrote:
On Wed, Jun 18, 2014 at 08:12:07PM
On Mon, Jun 30, 2014 at 09:45:32AM +0800, Tang Chen wrote:
On 06/21/2014 04:39 AM, Marcelo Tosatti wrote:
On Fri, Jun 20, 2014 at 05:31:46PM -0300, Marcelo Tosatti wrote:
IIRC your shadow page pinning patch series support flushing of ptes
by mmu notifier by forcing MMU reload and, as a result,
On Mon, Jun 30, 2014 at 11:35:27AM +0300, Nadav Amit wrote:
We encountered a scenario in which after an INIT is delivered, a pending
interrupt is delivered, although it was sent before the INIT. As the SDM
states in section 10.4.7.1, the ISR and the IRR should be cleared after INIT
as
KVM
On Mon, Jun 30, 2014 at 05:15:44PM +0200, Borislav Petkov wrote:
On Mon, Jun 30, 2014 at 05:03:57PM +0200, Jan Kiszka wrote:
15.5.1:
When examining segment attributes after a #VMEXIT:
[...]
• Retrieve the CPL from the CPL field in the VMCB, not from any segment
DPL.
Heey, it is
On Sat, Jun 28, 2014 at 01:44:31PM +0200, Borislav Petkov wrote:
qemu-system-x86-20240 [006] ...1 9406.484134: kvm_page_fault: address
7fffb62ba318 error_code 2
qemu-system-x86-20240 [006] ...1 9406.484136: kvm_inj_exception: #PF (0x2)a
kvm injects the #PF into the guest.
On Sun, Jun 29, 2014 at 11:56:03AM +0200, Jan Kiszka wrote:
On 2014-06-29 08:46, Gleb Natapov wrote:
On Sat, Jun 28, 2014 at 01:44:31PM +0200, Borislav Petkov wrote:
qemu-system-x86-20240 [006] ...1 9406.484134: kvm_page_fault: address
7fffb62ba318 error_code 2
qemu-system-x86-20240
On Sun, Jun 29, 2014 at 12:31:50PM +0200, Jan Kiszka wrote:
On 2014-06-29 12:24, Gleb Natapov wrote:
On Sun, Jun 29, 2014 at 11:56:03AM +0200, Jan Kiszka wrote:
On 2014-06-29 08:46, Gleb Natapov wrote:
On Sat, Jun 28, 2014 at 01:44:31PM +0200, Borislav Petkov wrote:
qemu-system-x86-20240
On Sun, Jun 29, 2014 at 03:14:43PM +0200, Borislav Petkov wrote:
On Sun, Jun 29, 2014 at 02:22:35PM +0200, Jan Kiszka wrote:
OK, looks like I won ;):
I gladly let you win. :-P
The issue was apparently introduced with KVM: x86: get CPL from
SS.DPL (ae9fedc793). Maybe we are not properly
On Sun, Jun 29, 2014 at 04:01:04PM +0200, Borislav Petkov wrote:
On Sun, Jun 29, 2014 at 04:42:47PM +0300, Gleb Natapov wrote:
Please do so and let us know.
Yep, just did. Reverting ae9fedc793 fixes the issue.
reinj:1 means that previous injection failed due to another #PF
On Fri, Jun 20, 2014 at 05:31:46PM -0300, Marcelo Tosatti wrote:
Same with the APIC access page.
APIC page is always mapped into guest's APIC base address 0xfee0.
The way it works is that when vCPU accesses page at 0xfee0 the access
is translated to APIC access page physical
On Thu, Jun 19, 2014 at 04:22:57PM -0300, Marcelo Tosatti wrote:
On Thu, Jun 19, 2014 at 10:21:16AM +0300, Gleb Natapov wrote:
On Wed, Jun 18, 2014 at 08:12:05PM -0300, mtosa...@redhat.com wrote:
Allow vcpus to pin spte translations by:
1) Creating a per-vcpu list of pinned ranges
On Thu, Jun 19, 2014 at 03:28:25PM -0300, Marcelo Tosatti wrote:
On Thu, Jun 19, 2014 at 09:48:50AM +0300, Gleb Natapov wrote:
On Wed, Jun 18, 2014 at 08:12:06PM -0300, mtosa...@redhat.com wrote:
Request KVM_REQ_MMU_RELOAD when deleting sptes from MMU notifiers.
Keep pinned sptes
On Thu, Jun 19, 2014 at 03:40:31PM -0300, Marcelo Tosatti wrote:
On Thu, Jun 19, 2014 at 11:17:19AM +0300, Gleb Natapov wrote:
On Wed, Jun 18, 2014 at 08:12:07PM -0300, mtosa...@redhat.com wrote:
Reload remote vcpus MMU from GET_DIRTY_LOG codepath, before
deleting a pinned spte
On Thu, Jun 19, 2014 at 04:00:24PM -0300, Marcelo Tosatti wrote:
On Thu, Jun 19, 2014 at 12:20:32PM +0300, Gleb Natapov wrote:
CCing Marcelo,
On Wed, Jun 18, 2014 at 02:50:44PM +0800, Tang Chen wrote:
Hi Gleb,
Thanks for the quick reply. Please see below.
On 06/18/2014 02
On Fri, Jun 20, 2014 at 09:53:26AM -0300, Marcelo Tosatti wrote:
On Fri, Jun 20, 2014 at 02:15:10PM +0300, Gleb Natapov wrote:
On Thu, Jun 19, 2014 at 04:00:24PM -0300, Marcelo Tosatti wrote:
On Thu, Jun 19, 2014 at 12:20:32PM +0300, Gleb Natapov wrote:
CCing Marcelo,
On Wed
On Wed, Jun 18, 2014 at 08:12:06PM -0300, mtosa...@redhat.com wrote:
Request KVM_REQ_MMU_RELOAD when deleting sptes from MMU notifiers.
Keep pinned sptes intact if page aging.
Signed-off-by: Marcelo Tosatti mtosa...@redhat.com
---
arch/x86/kvm/mmu.c | 71
On Wed, Jun 18, 2014 at 08:12:05PM -0300, mtosa...@redhat.com wrote:
Allow vcpus to pin spte translations by:
1) Creating a per-vcpu list of pinned ranges.
What if memory slot containing pinned range is going away?
2) On mmu reload request:
- Fault ranges.
- Mark sptes with a
On Wed, Jun 18, 2014 at 08:12:07PM -0300, mtosa...@redhat.com wrote:
Reload remote vcpus MMU from GET_DIRTY_LOG codepath, before
deleting a pinned spte.
Signed-off-by: Marcelo Tosatti mtosa...@redhat.com
---
arch/x86/kvm/mmu.c |3 +++
1 file changed, 3 insertions(+)
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