On Fri, 15 Jun 2012, Cyrill Gorcunov wrote:
On Fri, Jun 15, 2012 at 01:34:16PM +0200, Sasha Levin wrote:
We need to set the HYPERVISOR flag to let the kernel know we're running
under a hypervisor.
This makes the kernel enable all sorts of para-virtualization options
such as kvm-clock.
On Fri, 15 Jun 2012, Sasha Levin wrote:
While we process 9p requests serially, so there's no point for implementing
flush, we still need to answer it to prevent guest kernel from hanging waiting
for it.
Signed-off-by: Sasha Levin levinsasha...@gmail.com
Applied, thanks!
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On Wed, Jun 20, 2012 at 10:23:06AM +0300, Pekka Enberg wrote:
On Fri, 15 Jun 2012, Cyrill Gorcunov wrote:
On Fri, Jun 15, 2012 at 01:34:16PM +0200, Sasha Levin wrote:
We need to set the HYPERVISOR flag to let the kernel know we're running
under a hypervisor.
This makes the kernel
Changlog:
- always atomicly update the spte if it can be updated out of mmu-lock
- rename spte_can_be_writable() to spte_is_locklessly_modifiable()
- cleanup and comment spte_write_protect()
Performance result:
(The benchmark can be found at: http://www.spinics.net/lists/kvm/msg73011.html)
The reture value of __rmap_write_protect is either 1 or 0, use
true/false instead of these
Signed-off-by: Xiao Guangrong xiaoguangr...@linux.vnet.ibm.com
---
arch/x86/kvm/mmu.c | 13 +++--
1 files changed, 7 insertions(+), 6 deletions(-)
diff --git a/arch/x86/kvm/mmu.c
Introduce a common function to abstract spte write-protect to
cleanup the code
Signed-off-by: Xiao Guangrong xiaoguangr...@linux.vnet.ibm.com
---
arch/x86/kvm/mmu.c | 58 +++
1 files changed, 31 insertions(+), 27 deletions(-)
diff --git
Use __drop_large_spte to cleanup this function and comment spte_write_protect
Signed-off-by: Xiao Guangrong xiaoguangr...@linux.vnet.ibm.com
---
arch/x86/kvm/mmu.c | 45 +
1 files changed, 29 insertions(+), 16 deletions(-)
diff --git
Export the present bit of page fault error code, the later patch
will use it
Signed-off-by: Xiao Guangrong xiaoguangr...@linux.vnet.ibm.com
---
arch/x86/kvm/vmx.c |9 -
1 files changed, 8 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index
mmu_spte_update() is the common function, we can easily audit the path
Signed-off-by: Xiao Guangrong xiaoguangr...@linux.vnet.ibm.com
---
arch/x86/kvm/mmu.c | 33 -
1 files changed, 20 insertions(+), 13 deletions(-)
diff --git a/arch/x86/kvm/mmu.c
On Wed, Jun 20, 2012 at 10:37 AM, Cyrill Gorcunov gorcu...@openvz.org wrote:
From: Sasha Levin levinsasha...@gmail.com
Subject: [PATCH] kvm tools: set the HYPERVISOR flag in cpuid
We need to set the HYPERVISOR flag to let the kernel know we're running
under a hypervisor.
This makes the
This bit indicates whether the spte can be writable on MMU, that means
the corresponding gpte is writable and the corresponding gfn is not
protected by shadow page protection
In the later path, SPTE_MMU_WRITEABLE will indicates whether the spte
can be locklessly updated
Signed-off-by: Xiao
To see what happen on this path and help us to optimize it
Signed-off-by: Xiao Guangrong xiaoguangr...@linux.vnet.ibm.com
---
arch/x86/kvm/mmu.c |2 ++
arch/x86/kvm/mmutrace.h | 38 ++
2 files changed, 40 insertions(+), 0 deletions(-)
diff --git
If the the present bit of page fault error code is set, it indicates
the shadow page is populated on all levels, it means what we do is
only modify the access bit which can be done out of mmu-lock
Currently, in order to simplify the code, we only fix the page fault
caused by write-protect on the
Document fast page fault and mmu-lock in locking.txt
Signed-off-by: Xiao Guangrong xiaoguangr...@linux.vnet.ibm.com
---
Documentation/virtual/kvm/locking.txt | 130 -
1 files changed, 129 insertions(+), 1 deletions(-)
diff --git
The P bit of page fault error code is missed in this tracepoint, fix it by
passing the full error code
Signed-off-by: Xiao Guangrong xiaoguangr...@linux.vnet.ibm.com
---
arch/x86/kvm/mmutrace.h|7 +++
arch/x86/kvm/paging_tmpl.h |3 +--
2 files changed, 4 insertions(+), 6
On Wed, 20 Jun 2012 15:57:15 +0800
Xiao Guangrong xiaoguangr...@linux.vnet.ibm.com wrote:
Introduce a common function to abstract spte write-protect to
cleanup the code
Signed-off-by: Xiao Guangrong xiaoguangr...@linux.vnet.ibm.com
...
+/* Return true if the spte is dropped. */
+static
On 06/20/2012 05:02 PM, Takuya Yoshikawa wrote:
On Wed, 20 Jun 2012 15:57:15 +0800
Xiao Guangrong xiaoguangr...@linux.vnet.ibm.com wrote:
Introduce a common function to abstract spte write-protect to
cleanup the code
Signed-off-by: Xiao Guangrong xiaoguangr...@linux.vnet.ibm.com
...
On 6/18/12, Stefan Hajnoczi stefa...@gmail.com wrote:
I believe the call is coming from hw/usb/host-linux.c:async_complete()
but am not using the same source tree as your qemu-kvm so I could be
off. The code suggests that QEMU also logs an error message
(USBDEVFS_REAPURBNDELAY: Inappropriate
On Wed, Jun 20, 2012 at 10:40 AM, Emmanuel Noobadmin
centos.ad...@gmail.com wrote:
On 6/18/12, Stefan Hajnoczi stefa...@gmail.com wrote:
I believe the call is coming from hw/usb/host-linux.c:async_complete()
but am not using the same source tree as your qemu-kvm so I could be
off. The code
On Wed, 20 Jun 2012 17:11:06 +0800
Xiao Guangrong xiaoguangr...@linux.vnet.ibm.com wrote:
Strange! Why do you think it is wrong? It is just debug code.
kvm_mmu_slot_remove_write_access() does not use rmap but the debug code says:
rmap_printk(rmap_write_protect: spte %p %llx\n, sptep,
On 06/20/2012 08:56 PM, Takuya Yoshikawa wrote:
On Wed, 20 Jun 2012 17:11:06 +0800
Xiao Guangrong xiaoguangr...@linux.vnet.ibm.com wrote:
Strange! Why do you think it is wrong? It is just debug code.
kvm_mmu_slot_remove_write_access() does not use rmap but the debug code says:
On Wed, 20 Jun 2012 21:21:07 +0800
Xiao Guangrong xiaoguangr...@linux.vnet.ibm.com wrote:
Again, rmap does not break the logic, the spte we handle in this function
must
be in rmap.
I'm not saying whether this breaks some logic or not.
rmap_printk(rmap_write_protect: spte %p %llx\n, sptep,
FYI the virt-manager list is virt-tools-l...@redhat.com, CC'd.
On 06/19/2012 07:33 PM, Gene Crucean wrote:
Hey everyone,
I just subscribed to this list so please forgive me if I goof something up.
I was looking into the possibility of porting VMM to OSX. Is this on the
todo list already?
Thanks Mehul.
On Tue, Jun 19, 2012 at 7:33 PM, Mehul Chadha mehul...@gmail.com wrote:
On Tue, Jun 19, 2012 at 6:09 PM, sheng qiu herbert1984...@gmail.com wrote:
Hi all,
is there any existing function in KVM that can map a host virtual
address (hva) to the guest address space. So that the
Hi all,
does anyone can explain what is_no_device() and vmx_fpu_activate(vcpu) do?
Thanks,
Sheng
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On Tue, Jun 19, 2012 at 6:41 AM, Andrea Arcangeli aarca...@redhat.com wrote:
On Tue, Jun 19, 2012 at 12:32:06PM +0300, Avi Kivity wrote:
On 06/19/2012 01:20 AM, Christoffer Dall wrote:
On Mon, Jun 18, 2012 at 9:45 AM, Avi Kivity a...@redhat.com wrote:
On 06/15/2012 10:09 PM, Christoffer Dall
Signed-off-by: Bharat Bhushan bharat.bhus...@freescale.com
---
arch/powerpc/include/asm/hw_irq.h |2 ++
arch/powerpc/kvm/booke.c | 21 +
2 files changed, 23 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/include/asm/hw_irq.h
Watchdog is taken at critical exception level. So this patch
is tested with host watchdog exception happening when guest
is running.
Signed-off-by: Bharat Bhushan bharat.bhus...@freescale.com
---
arch/powerpc/kvm/booke_interrupts.S | 55 +--
1 files changed, 27
On 20.06.2012, at 17:56, Bharat Bhushan wrote:
Signed-off-by: Bharat Bhushan bharat.bhus...@freescale.com
Next time, please provide a patch description. Only the subject line does not
suffice generally.
Thanks, applied both nevertheless.
Alex
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On Wed, Jun 20, 2012 at 11:13:36AM -0400, Christoffer Dall wrote:
ah, we don't do things right, we use gfn_to_pfn() flat out and will
always break the COW :)
I guess now, when change_pte is a nop, it's outright incorrect if
anyone runs KSM.
This has just been added to my todo-list.
Cole, thanks for the reply! That was all very helpful.
Sorry about the wrong list thing too btw. Take care guys!
On Wed, Jun 20, 2012 at 7:26 AM, Cole Robinson crobi...@redhat.com wrote:
FYI the virt-manager list is virt-tools-l...@redhat.com, CC'd.
On 06/19/2012 07:33 PM, Gene Crucean
On 06/20/2012 02:21 AM, Rik van Riel wrote:
On Wed, 20 Jun 2012 01:50:50 +0530
Raghavendra K Traghavendra...@linux.vnet.ibm.com wrote:
In ple handler code, last_boosted_vcpu (lbv) variable is
serving as reference point to start when we enter.
Also statistical analysis (below) is showing
(removed r...@hydra11.kio from CC)
On Tue, Jun 19, 2012 at 03:45:27PM -0700, Chegu Vinod wrote:
From: root r...@hydra11.kio
Changes since v1:
- Use bitmap functions that are already in qemu (instead
of cpu_set_t macro's)
- Added a check for endvalue = max_cpus.
-
On 06/20/2012 10:11 PM, Takuya Yoshikawa wrote:
We can change the debug message later if needed.
Actually, i am going to use tracepoint instead of
these debug code.
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More
On Thu, 21 Jun 2012 09:48:05 +0800
Xiao Guangrong xiaoguangr...@linux.vnet.ibm.com wrote:
We can change the debug message later if needed.
Actually, i am going to use tracepoint instead of
these debug code.
That's very nice!
Then, please change the trace log to correspond to the
new
On 06/20/2012 04:12 PM, Raghavendra K T wrote:
On 06/20/2012 02:21 AM, Rik van Riel wrote:
Please let me know how it goes.
Yes, have got result today, too tired to summarize. got better
performance result too. will come back again tomorrow morning.
have to post, randomized start point patch
From: Zhengwang Ruan ruan.zhengw...@gmail.com
This patch adds brackets for shifted returned value in gfn_to_gpa
and pfn_to_hpa.
Signed-off-by: Zhengwang Ruan ruan.zhengw...@gmail.com
---
include/linux/kvm_host.h |4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git
Signed-off-by: Bharat Bhushan bharat.bhus...@freescale.com
---
arch/powerpc/include/asm/hw_irq.h |2 ++
arch/powerpc/kvm/booke.c | 21 +
2 files changed, 23 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/include/asm/hw_irq.h
Watchdog is taken at critical exception level. So this patch
is tested with host watchdog exception happening when guest
is running.
Signed-off-by: Bharat Bhushan bharat.bhus...@freescale.com
---
arch/powerpc/kvm/booke_interrupts.S | 55 +--
1 files changed, 27
On 20.06.2012, at 17:56, Bharat Bhushan wrote:
Signed-off-by: Bharat Bhushan bharat.bhus...@freescale.com
Next time, please provide a patch description. Only the subject line does not
suffice generally.
Thanks, applied both nevertheless.
Alex
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