On 08/14/2012 01:04 AM, Marcelo Tosatti wrote:
On Mon, Aug 13, 2012 at 01:34:11PM -0300, Marcelo Tosatti wrote:
On Sat, Aug 11, 2012 at 10:37:54AM +1000, Paul Mackerras wrote:
On Fri, Aug 10, 2012 at 03:35:53PM -0300, Marcelo Tosatti wrote:
There's no plan. I just wanted to confirm this
On 08/15/2012 02:04 AM, Alexander Graf wrote:
From: Alan Cox a...@linux.intel.com
Put the parameters the right way around
Addresses https://bugzilla.kernel.org/show_bug.cgi?id=44031
Should this go to 3.6 (and backports etc.)?
--
error compiling committee.c: too many arguments to
On 08/15/2012 01:09 PM, Alexander Graf wrote:
On 15.08.2012, at 12:07, Avi Kivity wrote:
On 08/15/2012 02:04 AM, Alexander Graf wrote:
From: Alan Cox a...@linux.intel.com
Put the parameters the right way around
Addresses https://bugzilla.kernel.org/show_bug.cgi?id=44031
Should
On 08/14/2012 06:51 PM, Marcelo Tosatti wrote:
Userspace may want to modify the ROM (for example, when programming a
flash device). It is also possible to map an hva range rw through one
slot and ro through another.
Right, can do that with multiple userspace maps to the same anonymous
On 08/15/2012 11:06 AM, Martin Wawro wrote:
Hi all,
We have noticed a strange thing in one of our setups which uses KVM for
virtualization.
The size of the buffer cache turns out to be rather large, here is what
'top' on the host
has to say about it:
Mem: 12274084k total, 12202860k
On 08/15/2012 03:05 PM, Martin Wawro wrote:
On Aug 15, 2012, at 1:30 PM, Avi Kivity wrote:
We have noticed a strange thing in one of our setups which uses KVM for
virtualization.
The size of the buffer cache turns out to be rather large
[,,,]
How is you storage set up? Files (which
On 08/15/2012 02:26 AM, Alex Williamson wrote:
Yes, I understand. It's simple, it's also very specific to this
problem, and doesn't address generic ack notification. All of which
I've noted before and I continue to note that v8 offers simplifications
while retaining flexibility. Least
, including Avi's requests to simplify both
the PCI BAR mapping and unmapping paths.
Reviewed-by: Avi Kivity a...@redhat.com
--
error compiling committee.c: too many arguments to function
--
To unsubscribe from this list: send the line unsubscribe kvm in
the body of a message to majord
Instead of populating the the entire register file, read in registers
as they are accessed, and write back only the modified ones. This
saves a VMREAD and VMWRITE on Intel (for rsp, since it is not usually
used during emulation), and a two 128-byte copies for the registers.
Signed-off-by: Avi
On 08/15/2012 05:57 PM, Avi Kivity wrote:
Instead of populating the the entire register file, read in registers
as they are accessed, and write back only the modified ones. This
saves a VMREAD and VMWRITE on Intel (for rsp, since it is not usually
used during emulation), and a two 128-byte
On 08/13/2012 07:34 PM, Marcelo Tosatti wrote:
Avi, Gleb, Alex, do you know why it is necessary to support change of
GPA base again?
BAR moving around.
Without taking into consideration backwards compatibility, userspace
can first delete the slot and later create a new one.
Current qemu
On 08/15/2012 02:04 AM, Alexander Graf wrote:
From: Alan Cox a...@linux.intel.com
Put the parameters the right way around
Addresses https://bugzilla.kernel.org/show_bug.cgi?id=44031
Should this go to 3.6 (and backports etc.)?
--
error compiling committee.c: too many arguments to
On 08/15/2012 01:09 PM, Alexander Graf wrote:
On 15.08.2012, at 12:07, Avi Kivity wrote:
On 08/15/2012 02:04 AM, Alexander Graf wrote:
From: Alan Cox a...@linux.intel.com
Put the parameters the right way around
Addresses https://bugzilla.kernel.org/show_bug.cgi?id=44031
Should
On 08/14/2012 10:33 AM, Jan Kiszka wrote:
KVM_IRQ_LINE is old-style, deprecated, KVM_IRQ_LINE_STATUS (i.e
injection with feedback to allow lost-tick compensation) is the current
standard that other archs should pick up.
KVM_IRQ_LINE_STATUS may not make sense on all architectures.
I don't
On 08/12/2012 12:33 PM, Michael S. Tsirkin wrote:
Michael, would the interface be more acceptable to you if we added
separate ioctls to allocate and free some representation of an irq
source ID, gsi pair? For instance, an ioctl might return an idr entry
for an irq source ID/gsi object which
On 08/14/2012 02:05 PM, Jan Kiszka wrote:
On 2012-08-14 13:01, Avi Kivity wrote:
On 08/14/2012 10:33 AM, Jan Kiszka wrote:
KVM_IRQ_LINE is old-style, deprecated, KVM_IRQ_LINE_STATUS (i.e
injection with feedback to allow lost-tick compensation) is the current
standard that other archs should
On 08/10/2012 09:14 PM, Marcelo Tosatti wrote:
On Tue, Aug 07, 2012 at 05:47:15PM +0800, Xiao Guangrong wrote:
Changelog:
- introduce KVM_PFN_ERR_RO_FAULT instead of dummy page
- introduce KVM_HVA_ERR_BAD and optimize error hva indicators
The test case can be found at:
On 08/14/2012 05:00 PM, Jan Kiszka wrote:
The host can prevent this by leaving disabling the guest pmu. But
disabling jump labels for real-time kernels may be acceptable too. We
can probably to it at run time by forcing the slow path at all times.
Yes, it is possible to add module option
On 08/13/2012 10:31 PM, Anthony Liguori wrote:
Jan Kiszka jan.kis...@siemens.com writes:
On 2012-08-13 15:58, Avi Kivity wrote:
On 08/13/2012 04:27 PM, Anthony Liguori wrote:
Thanks for pushing this forward! Hopefully this will finally kill off
qemu-kvm.git for good.
No, it won't
On 08/01/2012 08:18 AM, Alex Williamson wrote:
This adds the core of the QEMU VFIO-based PCI device assignment driver.
To make use of this driver, enable CONFIG_VFIO, CONFIG_VFIO_IOMMU_TYPE1,
and CONFIG_VFIO_PCI in your host Linux kernel config. Load the vfio-pci
module. To assign device
On 08/14/2012 05:58 PM, Jan Kiszka wrote:
And regarding how common they are: Do standard OSes trigger any
jump-label optimized switch during at least their boot-up? I thought so.
In that case, if you co-locate RT and standard OSes on a shared host,
you would have a conflict.
Yes, during
On 08/14/2012 07:38 PM, Jan Kiszka wrote:
On 2012-08-14 18:21, Avi Kivity wrote:
On 08/14/2012 05:58 PM, Jan Kiszka wrote:
And regarding how common they are: Do standard OSes trigger any
jump-label optimized switch during at least their boot-up? I thought so.
In that case, if you co-locate
On 08/12/2012 08:28 PM, Gleb Natapov wrote:
On Sun, Aug 12, 2012 at 04:40:48PM +0300, Avi Kivity wrote:
On 08/12/2012 04:25 PM, Gleb Natapov wrote:
How expensive is this? We may want a follow-on patch to cache it in a
per-cpu variable.
I have patches ready. I couldn't measure any
On 08/13/2012 12:16 PM, Gleb Natapov wrote:
Signed-off-by: Gleb Natapov g...@redhat.com
-int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
+int kvm_irq_delivery_to_apic(struct kvm_kernel_irq_routing_entry *e,
+ struct kvm *kvm, struct kvm_lapic *src,
On 08/13/2012 12:16 PM, Gleb Natapov wrote:
Here is a quick prototype of what we discussed yesterday. This one
caches only MSI interrupts for now. The obvious problem is that not
all interrupts (namely IPIs and MSIs using KVM_CAP_SIGNAL_MSI) use irq
routing table, so they cannot be cached.
We
On 08/13/2012 12:16 PM, Gleb Natapov wrote:
Here is a quick prototype of what we discussed yesterday. This one
caches only MSI interrupts for now. The obvious problem is that not
all interrupts (namely IPIs and MSIs using KVM_CAP_SIGNAL_MSI) use irq
routing table, so they cannot be cached.
On 08/13/2012 01:16 PM, Gleb Natapov wrote:
On Mon, Aug 13, 2012 at 01:12:46PM +0300, Michael S. Tsirkin wrote:
On Mon, Aug 13, 2012 at 12:36:41PM +0300, Avi Kivity wrote:
On 08/13/2012 12:16 PM, Gleb Natapov wrote:
Here is a quick prototype of what we discussed yesterday. This one
On 08/13/2012 01:24 PM, Gleb Natapov wrote:
On Mon, Aug 13, 2012 at 01:21:33PM +0300, Avi Kivity wrote:
On 08/13/2012 01:16 PM, Gleb Natapov wrote:
On Mon, Aug 13, 2012 at 01:12:46PM +0300, Michael S. Tsirkin wrote:
On Mon, Aug 13, 2012 at 12:36:41PM +0300, Avi Kivity wrote:
On 08/13/2012
On 08/13/2012 01:38 PM, Michael S. Tsirkin wrote:
On Mon, Aug 13, 2012 at 01:31:36PM +0300, Avi Kivity wrote:
On 08/13/2012 01:24 PM, Gleb Natapov wrote:
On Mon, Aug 13, 2012 at 01:21:33PM +0300, Avi Kivity wrote:
On 08/13/2012 01:16 PM, Gleb Natapov wrote:
On Mon, Aug 13, 2012 at 01:12
On 08/13/2012 02:01 PM, Gleb Natapov wrote:
Actually this is overkill. Suppose we do an apicid-vcpu translation
cache? Then we retain O(1) behaviour, no need for a huge cache.
Not sure I follow.
Unicast MSIs and IPIs can be speeded up by looking up the vcpu using the
apic id, using a
On 08/13/2012 02:12 PM, Gleb Natapov wrote:
On Mon, Aug 13, 2012 at 02:03:51PM +0300, Avi Kivity wrote:
On 08/13/2012 02:01 PM, Gleb Natapov wrote:
Actually this is overkill. Suppose we do an apicid-vcpu translation
cache? Then we retain O(1) behaviour, no need for a huge cache
On 08/13/2012 02:41 PM, Gleb Natapov wrote:
On Mon, Aug 13, 2012 at 02:30:49PM +0300, Avi Kivity wrote:
On 08/13/2012 02:12 PM, Gleb Natapov wrote:
On Mon, Aug 13, 2012 at 02:03:51PM +0300, Avi Kivity wrote:
On 08/13/2012 02:01 PM, Gleb Natapov wrote:
Actually this is overkill
On 08/13/2012 02:43 PM, Gleb Natapov wrote:
MSI does not have shorthand, so it is simpler but the code above does
work for APIC_DFR_CLUSTER as far as I can tell and it does not check
lowest prio, which is not multicast, but should bot be cached.
It also a little bit pessimistic for logical
All processors that support VMX have that feature, and guests (Xen) depend on
it. As we already implement it, advertize it to the guest.
Signed-off-by: Avi Kivity a...@redhat.com
---
arch/x86/kvm/vmx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kvm/vmx.c b/arch
On 08/13/2012 04:27 PM, Anthony Liguori wrote:
Thanks for pushing this forward! Hopefully this will finally kill off
qemu-kvm.git for good.
No, it won't. vfio requires a 3.6 kernel, which we cannot assume anyone
has. We'll need the original device assignment code side-by-side.
--
error
On 08/09/2012 10:26 PM, Alex Williamson wrote:
On Mon, 2012-08-06 at 13:40 +0300, Avi Kivity wrote:
On 08/06/2012 01:38 PM, Avi Kivity wrote:
Regarding the implementation, instead of a linked list, would an array
of counters parallel to the bitmap make it simpler?
Or even, replace
On 08/10/2012 09:44 AM, liu ping fan wrote:
In the previous discussion, you have suggest add dev-ref++ in
core_region_add. But I think, if we can move it to higher layer --
memory_region_{add,del}_subregion, so we can avoid to duplicate do
this in other xx_region_add.
Why would other memory
On 08/11/2012 12:20 PM, Ren, Yongjie wrote:
Hi folks,
I did some basic testing on nested virtualization on Intel x86-64 platform.
Will KVM support Xen as L1 guest in nested virtualization ?
When I tried Xen on KVM mode, I found VMX can't be initialized in L1 Xen
hypervisor.
I tried both
On 08/10/2012 11:10 AM, Gerd Hoffmann wrote:
Hi,
(1) Use this patch (with alignment issue fixed of course).
(2) Do a full kvmclock implementation. Feels a bit like overkill.
(3) SeaBIOS can fallback to the PIT for timing on machines which
have no TSC. We could do that
On 08/09/2012 09:59 PM, Marcelo Tosatti wrote:
+wrmsr(msr, 0);
+if (time.version 2 || time.tsc_to_system_mul == 0)
+return 0;
+
+/* go figure tsc frequency */
+khz = pvclock_tsc_khz(time);
+dprintf(1, Using kvmclock, msr 0x%x, tsc %d MHz\n,
+
On 08/09/2012 08:02 PM, Alexander Graf wrote:
On 09.08.2012, at 12:36, Avi Kivity a...@redhat.com wrote:
On 08/09/2012 01:34 PM, Takuya Yoshikawa wrote:
On Tue, 7 Aug 2012 12:57:13 +0200
Alexander Graf ag...@suse.de wrote:
+struct kvm_memory_slot *hva_to_memslot(struct kvm *kvm
On 08/12/2012 12:41 PM, Ren, Yongjie wrote:
#define CPU_BASED_RDTSC_EXITING 0x1000
#define VM_EXIT_ACK_INTR_ON_EXIT0x8000
Will KVM expose these two features in its vCPU ?
Those are two bugs in kvm. The first is trivial to fix, the second is
harder. I
On 08/09/2012 07:33 PM, Peter Maydell wrote:
Enable KVM on ARM hosts, now that all the necessary components
for it exist.
esac
case $target_arch2 in
- i386|x86_64|ppcemb|ppc|ppc64|s390x)
+ arm|i386|x86_64|ppcemb|ppc|ppc64|s390x)
# Make sure the target and host cpus are compatible
On 08/09/2012 10:02 PM, Marcelo Tosatti wrote:
On Thu, Aug 09, 2012 at 05:20:11PM +0300, Avi Kivity wrote:
On 08/09/2012 05:18 PM, Gerd Hoffmann wrote:
Hi,
So what do you suggest? The options I see are:
(1) Use this patch (with alignment issue fixed of course).
(2) Do a full
On 08/12/2012 02:03 PM, Alexander Graf wrote:
Well, for now I just dropped the whole thing. In general, chances are pretty
good that an HVA we get notified on with mmu notifiers is representing guest
memory. And flushing a few times too often shouldn't hurt.
That is not the case, actually.
On 08/12/2012 04:12 PM, Gleb Natapov wrote:
MSR_IA32_DEBUGCTLMSR is zeroed on VMEXIT. Restore it to the correct
value.
@@ -6222,6 +6222,7 @@ static void atomic_switch_perf_msrs(struct vcpu_vmx
*vmx)
static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu)
{
struct vcpu_vmx *vmx
On 08/12/2012 04:25 PM, Gleb Natapov wrote:
How expensive is this? We may want a follow-on patch to cache it in a
per-cpu variable.
I have patches ready. I couldn't measure any overhead of the
rdmsr(MSR_IA32_DEBUGCTLMSR).
Do you mean while running kvm? How about just running it in a
On 08/09/2012 08:02 PM, Alexander Graf wrote:
On 09.08.2012, at 12:36, Avi Kivity a...@redhat.com wrote:
On 08/09/2012 01:34 PM, Takuya Yoshikawa wrote:
On Tue, 7 Aug 2012 12:57:13 +0200
Alexander Graf ag...@suse.de wrote:
+struct kvm_memory_slot *hva_to_memslot(struct kvm *kvm
On 08/12/2012 02:03 PM, Alexander Graf wrote:
Well, for now I just dropped the whole thing. In general, chances are pretty
good that an HVA we get notified on with mmu notifiers is representing guest
memory. And flushing a few times too often shouldn't hurt.
That is not the case, actually.
On 08/09/2012 10:49 AM, Paolo Bonzini wrote:
Il 09/08/2012 09:33, liu ping fan ha scritto:
Yes, it is to defer destructors.
See 0009-memory-prepare-flatview-and-radix-tree-for-rcu-style.patch
When MemoryRegion is _del_subregion from mem in updater, it may be
still in use by reader -- radix or
On 08/09/2012 10:28 AM, liu ping fan wrote:
Seems to me that nothing in memory.c can susceptible to races. It must
already be called under the big qemu lock, and with the exception of
mutators (memory_region_set_*), changes aren't directly visible.
Yes, what I want to do is prepare unplug
On 08/09/2012 10:27 AM, liu ping fan wrote:
On Wed, Aug 8, 2012 at 5:42 PM, Avi Kivity a...@redhat.com wrote:
On 08/08/2012 09:25 AM, Liu Ping Fan wrote:
From: Liu Ping Fan pingf...@linux.vnet.ibm.com
Please explain the motivation. AFAICT, the big qemu lock is sufficient.
Oh, this is one
On 08/09/2012 10:27 AM, liu ping fan wrote:
On Wed, Aug 8, 2012 at 5:20 PM, Avi Kivity a...@redhat.com wrote:
On 08/08/2012 09:25 AM, Liu Ping Fan wrote:
From: Liu Ping Fan pingf...@linux.vnet.ibm.com
Using refcnt for mr, so we can separate mr's life cycle management
from refered object
On 08/09/2012 10:13 AM, Stefan Bader wrote:
Avi, was the last version of the patch (only adding the flag to the nested
MSRs)
good for submitting to stable from your point of view?
Yes, it is correct. I forwarded it to stable, thanks.
--
error compiling committee.c: too many arguments
On 08/08/2012 07:27 PM, David Ahern wrote:
Not sure if KVM is the culprit, but it is the last line shown on the
console. I have to power cycle the server to reboot.
Have you tried rmmoding the kvm modules before reboot?
Were any guests running during this?
--
error compiling committee.c:
On 08/08/2012 03:24 PM, Gleb Natapov wrote:
For apic_set_spiv() to track APIC SW state correctly it needs to see
previous and next values of the spurious vector register, but currently
memset() overwrite the old value before apic_set_spiv() get a chance to
do tracking. Fix it by calling
On 08/07/2012 05:52 PM, Cornelia Huck wrote:
Running under a kvm host does not necessarily imply the presence of
a page mapped above the main memory with the virtio information;
however, the code includes a hard coded access to that page.
Instead, check for the presence of the page and exit
On 08/09/2012 01:34 PM, Takuya Yoshikawa wrote:
On Tue, 7 Aug 2012 12:57:13 +0200
Alexander Graf ag...@suse.de wrote:
+struct kvm_memory_slot *hva_to_memslot(struct kvm *kvm, hva_t hva)
+{
+struct kvm_memslots *slots = kvm_memslots(kvm);
+struct kvm_memory_slot *memslot;
+
+
On 08/09/2012 02:57 PM, Gerd Hoffmann wrote:
Use kvmclock for tsc calibration when running on kvm. Without this the
tsc frequency calibrated by seabios can be *way* off in case the virtual
machine is booted on a loaded host. I've seen seabios calibrating 27
instead of ca. 2800 MHz, resulting
On 08/08/2012 09:40 PM, Bruce Rogers wrote:
A command line device probe using just -device ? gets processed
after qemu-kvm initializes the accelerator. If /dev/kvm is not
present, the accelerator check will fail (kvm is defaulted to on),
which causes libvirt to not be set up to handle qemu
On 08/07/2012 06:11 PM, Peter Maydell wrote:
On 2 August 2012 10:14, Jan Kiszka jan.kis...@web.de wrote:
On 2012-07-26 16:35, Peter Maydell wrote:
This patch series removes all uses of kvm_irqchip_in_kernel()
from architecture-independent code, by creating a set of more
specific functions
On 08/09/2012 05:01 PM, Avi Kivity wrote:
On 08/09/2012 04:57 PM, Gerd Hoffmann wrote:
Hi,
+u64 kvm_tsc_khz(void)
+{
+u32 eax, ebx, ecx, edx, msr;
+struct pvclock_vcpu_time_info time;
+u32 addr = (u32)(time);
+u64 khz;
+
+/* check presence and figure msr number
On 08/09/2012 05:12 PM, Gerd Hoffmann wrote:
Hi,
er, the documentation says 4 bytes (so stack alignment works). I
distinctly remember having a large alignment requirement so we don't
cross a page or slot boundary... something's wrong here.
case MSR_KVM_SYSTEM_TIME: {
[ ... ]
On 08/09/2012 04:57 PM, Gerd Hoffmann wrote:
Hi,
+u64 kvm_tsc_khz(void)
+{
+u32 eax, ebx, ecx, edx, msr;
+struct pvclock_vcpu_time_info time;
+u32 addr = (u32)(time);
+u64 khz;
+
+/* check presence and figure msr number */
+cpuid(KVM_CPUID_FEATURES, eax, ebx,
On 08/09/2012 05:18 PM, Gerd Hoffmann wrote:
Hi,
So what do you suggest? The options I see are:
(1) Use this patch (with alignment issue fixed of course).
(2) Do a full kvmclock implementation. Feels a bit like overkill.
(3) SeaBIOS can fallback to the PIT for timing on machines
On 08/09/2012 06:13 PM, Paolo Bonzini wrote:
Il 05/07/2012 12:29, Jason Wang ha scritto:
Sometimes, virtio device need to configure irq affiniry hint to maximize the
performance. Instead of just exposing the irq of a virtqueue, this patch
introduce an API to set the affinity for a virtqueue.
On 08/09/2012 01:34 PM, Takuya Yoshikawa wrote:
On Tue, 7 Aug 2012 12:57:13 +0200
Alexander Graf ag...@suse.de wrote:
+struct kvm_memory_slot *hva_to_memslot(struct kvm *kvm, hva_t hva)
+{
+struct kvm_memslots *slots = kvm_memslots(kvm);
+struct kvm_memory_slot *memslot;
+
+
On 08/08/2012 12:09 AM, Benjamin Herrenschmidt wrote:
On Tue, 2012-08-07 at 16:13 +0300, Avi Kivity wrote:
Peter has started to fix up this naming mess in qemu. I guess we should
do the same for the kernel (except for ABIs) and document it, because it
keeps generating confusion.
Ok so
On 08/08/2012 03:49 AM, David Gibson wrote:
We never have irqchip in kernel (because we haven't written that yet)
but we still sleep in-kernel for CEDE. I haven't spotted any problem
with that, but now I'm wondering if there is one, since x86 don't do
it in what seems like the analogous
On 08/08/2012 09:25 AM, Liu Ping Fan wrote:
From: Liu Ping Fan pingf...@linux.vnet.ibm.com
If out of global lock, we will be challenged by SMP in low level,
so need atomic ops.
This file is heavily copied from kernel. Currently, only x86 atomic ops
included, and will be extended for other
On 08/08/2012 09:25 AM, Liu Ping Fan wrote:
From: Liu Ping Fan pingf...@linux.vnet.ibm.com
Collect unused object and release them at caller demand.
Please explain the motivation for this patch.
--
error compiling committee.c: too many arguments to function
--
To unsubscribe from this
On 08/08/2012 09:25 AM, Liu Ping Fan wrote:
From: Liu Ping Fan pingf...@linux.vnet.ibm.com
Using mem_map_lock to protect among updaters. So we can get the intact
snapshot of mem topology -- FlatView radix-tree.
Signed-off-by: Liu Ping Fan pingf...@linux.vnet.ibm.com
---
exec.c |3
On 08/08/2012 12:07 PM, Paolo Bonzini wrote:
Il 08/08/2012 11:05, Avi Kivity ha scritto:
From: Liu Ping Fan pingf...@linux.vnet.ibm.com
Collect unused object and release them at caller demand.
Please explain the motivation for this patch.
It's poor man RCU, I think?
I thought
On 08/08/2012 12:05 PM, 陳韋任 (Wei-Ren Chen) wrote:
I propose we use gcc builtins. We get automatic architecture support,
and tuning for newer processors if the user so chooses.
http://gcc.gnu.org/onlinedocs/gcc-4.1.2/gcc/Atomic-Builtins.html
In May 2031 we can switch to C11 atomics.
On 08/08/2012 09:25 AM, Liu Ping Fan wrote:
From: Liu Ping Fan pingf...@linux.vnet.ibm.com
The types of referred object by MemoryRegion are variable, ex,
another mr, DeviceState, or other struct defined by drivers.
So the refer/unrefer may be different by drivers.
Using this ops, we can
On 08/08/2012 09:25 AM, Liu Ping Fan wrote:
From: Liu Ping Fan pingf...@linux.vnet.ibm.com
Using refcnt for mr, so we can separate mr's life cycle management
from refered object.
When mr-ref 0-1, inc the refered object.
When mr-ref 1-0, dec the refered object.
The refered object can
On 08/08/2012 09:25 AM, Liu Ping Fan wrote:
From: Liu Ping Fan pingf...@linux.vnet.ibm.com
PhysMap contain the flatview and radix-tree view, they are snapshot
of system topology and should be consistent. With PhysMap, we can
swap the pointer when updating and achieve the atomic.
On 08/08/2012 09:25 AM, Liu Ping Fan wrote:
From: Liu Ping Fan pingf...@linux.vnet.ibm.com
Flatview and radix view are all under the protection of pointer.
And this make sure the change of them seem to be atomic!
The mr accessed by radix-tree leaf or flatview will be reclaimed
after the
On 08/08/2012 09:25 AM, Liu Ping Fan wrote:
From: Liu Ping Fan pingf...@linux.vnet.ibm.com
Please explain the motivation. AFAICT, the big qemu lock is sufficient.
--
error compiling committee.c: too many arguments to function
--
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On 08/08/2012 12:52 PM, Paolo Bonzini wrote:
Il 08/08/2012 08:25, Liu Ping Fan ha scritto:
+void qdev_unplug_complete(DeviceState *dev, Error **errp)
+{
+/* isolate from mem view */
+qdev_unmap(dev);
+qemu_lock_devtree();
+/* isolate from device tree */
+
On 08/08/2012 12:23 AM, Marcelo Tosatti wrote:
@@ -281,8 +294,10 @@ struct x86_emulate_ctxt {
bool rip_relative;
unsigned long _eip;
struct operand memop;
+u32 regs_valid; /* bitmaps of registers in _regs[] that can be read */
+u32 regs_dirty; /* bitmaps of registers
On 08/08/2012 02:59 PM, David Gibson wrote:
No, you're correct. HLT could have been emulated in userspace, it just
wasn't. The correct statement is that HLT was arbitrarily chosen to be
emulated in userspace with the synchronous model, but the asynchronous
model forced it into the kernel.
On 08/08/2012 04:49 PM, Paolo Bonzini wrote:
Il 08/08/2012 15:32, Peter Maydell ha scritto:
1. GCC atomics look ugly, :) do not provide rmb/wmb, and in some
versions of GCC mb is known to be (wrongly) a no-op.
2. glib atomics do not provide mb/rmb/wmb either, and
On 08/08/2012 12:09 AM, Benjamin Herrenschmidt wrote:
On Tue, 2012-08-07 at 16:13 +0300, Avi Kivity wrote:
Peter has started to fix up this naming mess in qemu. I guess we should
do the same for the kernel (except for ABIs) and document it, because it
keeps generating confusion.
Ok so
On 08/08/2012 03:49 AM, David Gibson wrote:
We never have irqchip in kernel (because we haven't written that yet)
but we still sleep in-kernel for CEDE. I haven't spotted any problem
with that, but now I'm wondering if there is one, since x86 don't do
it in what seems like the analogous
On 08/08/2012 02:59 PM, David Gibson wrote:
No, you're correct. HLT could have been emulated in userspace, it just
wasn't. The correct statement is that HLT was arbitrarily chosen to be
emulated in userspace with the synchronous model, but the asynchronous
model forced it into the kernel.
On 08/07/2012 03:14 PM, David Gibson wrote:
On Tue, Aug 07, 2012 at 11:46:35AM +0300, Avi Kivity wrote:
On 08/07/2012 04:32 AM, David Gibson wrote:
On Tue, Aug 07, 2012 at 06:57:57AM +1000, Benjamin Herrenschmidt wrote:
On Mon, 2012-08-06 at 13:13 +1000, David Gibson wrote:
So, I'm still
On 08/07/2012 01:57 PM, Alexander Graf wrote:
The e500 target has lived without mmu notifiers ever since it got
introduced, but fails for the user space check on them with hugetlbfs.
So in order to get that one working, implement mmu notifiers in a
reasonably dumb fashion and be happy. On
On 08/07/2012 01:57 PM, Alexander Graf wrote:
Some archs need to ensure that their icache is flushed when mapping a new
page. Add a callback to the generic code for an arch to implement any cache
flush logic it may need.
Signed-off-by: Alexander Graf ag...@suse.de
---
virt/kvm/kvm_main.c
On 08/07/2012 04:44 PM, Alexander Graf wrote:
Is this the correct place? Who says the caller of hva_to_pfn() is going
to map it?
I don't think anyone is. However, we need the struct page, and all the
generic kvm mm code tries hard to hide it from its users. The alternative
would be
On 08/06/2012 08:20 PM, Peter Maydell wrote:
On 3 July 2012 10:01, Christoffer Dall c.d...@virtualopensystems.com wrote:
From: Christoffer Dall cd...@cs.columbia.edu
Userspace can inject IRQs and FIQs through the KVM_IRQ_LINE VM ioctl.
This ioctl is used since the sematics are in fact two
On 08/07/2012 05:08 PM, Alexander Graf wrote:
On 07.08.2012, at 15:58, Avi Kivity a...@redhat.com wrote:
On 08/07/2012 04:44 PM, Alexander Graf wrote:
Is this the correct place? Who says the caller of hva_to_pfn() is going
to map it?
I don't think anyone is. However, we need
On 08/07/2012 04:52 PM, Alexander Graf wrote:
+/* MMU Notifiers */
+
+int kvm_unmap_hva(struct kvm *kvm, unsigned long hva)
+{
+/* Is this a guest page? */
+if (!hva_to_memslot(kvm, hva))
+return 0;
+
+/*
+ * Flush all shadow tlb entries
On 08/07/2012 05:14 PM, Alexander Graf wrote:
On 07.08.2012, at 16:10, Avi Kivity a...@redhat.com wrote:
On 08/07/2012 05:08 PM, Alexander Graf wrote:
On 07.08.2012, at 15:58, Avi Kivity a...@redhat.com wrote:
On 08/07/2012 04:44 PM, Alexander Graf wrote:
Is this the correct
On 08/07/2012 05:12 PM, Peter Maydell wrote:
On 7 August 2012 14:59, Avi Kivity a...@redhat.com wrote:
On 08/06/2012 08:20 PM, Peter Maydell wrote:
On 3 July 2012 10:01, Christoffer Dall c.d...@virtualopensystems.com
wrote:
From: Christoffer Dall cd...@cs.columbia.edu
Userspace can inject
On 08/07/2012 05:24 PM, Alexander Graf wrote:
Pre-map? How?
In arch code before you install the page in a pte/tlbe.
So how do I get to the struct page in there?
pfn_to_page()
--
error compiling committee.c: too many arguments to function
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On 08/06/2012 11:25 PM, Scott Wood wrote:
On 08/05/2012 04:00 AM, Avi Kivity wrote:
On 08/04/2012 01:32 AM, Benjamin Herrenschmidt wrote:
On Fri, 2012-08-03 at 15:05 -0300, Marcelo Tosatti wrote:
See kvm_arch_process_async_events() call to qemu_system_reset_request()
in target-i386/kvm.c
On 08/07/2012 04:32 AM, David Gibson wrote:
On Tue, Aug 07, 2012 at 06:57:57AM +1000, Benjamin Herrenschmidt wrote:
On Mon, 2012-08-06 at 13:13 +1000, David Gibson wrote:
So, I'm still trying to nut out the implications for H_CEDE, and think
if there are any other hypercalls that might want
On 08/06/2012 11:25 PM, Scott Wood wrote:
On 08/05/2012 04:00 AM, Avi Kivity wrote:
On 08/04/2012 01:32 AM, Benjamin Herrenschmidt wrote:
On Fri, 2012-08-03 at 15:05 -0300, Marcelo Tosatti wrote:
See kvm_arch_process_async_events() call to qemu_system_reset_request()
in target-i386/kvm.c
On 08/07/2012 04:32 AM, David Gibson wrote:
On Tue, Aug 07, 2012 at 06:57:57AM +1000, Benjamin Herrenschmidt wrote:
On Mon, 2012-08-06 at 13:13 +1000, David Gibson wrote:
So, I'm still trying to nut out the implications for H_CEDE, and think
if there are any other hypercalls that might want
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