kvm_mmu_zap_all is a slow path, break the mmu-lock if needed to
avoid potential soft lockup
Signed-off-by: Xiao Guangrong
---
arch/x86/kvm/mmu.c | 11 ++-
1 files changed, 10 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 633e30c..1ebca53 1006
This patch makes kvm_mmu_zap_all be preemptable since it is a slow path,
break the mmu-lock if needed to avoid potential soft lockup. Also it drops
unnecessary kvm_reload_remote_mmus
This is the preparing work about kvm_mmu_zap_all, the fast approach is being
developed
Xiao Guangrong (2):
KVM:
It is the responsibility of kvm_mmu_zap_all that keeps the
consistent of mmu and tlbs. And it is also unnecessary after
zap all mmio sptes since no mmio spte exists on root shadow
page and it can not be cached into tlb
Signed-off-by: Xiao Guangrong
---
arch/x86/kvm/x86.c |5 +
1 files ch
From: Yang Zhang
If posted interrupt is avaliable, then uses it to inject virtual
interrupt to guest.
Signed-off-by: Yang Zhang
---
arch/x86/kvm/lapic.c | 29 ++---
arch/x86/kvm/vmx.c |2 +-
arch/x86/kvm/x86.c |1 +
3 files changed, 20 insertions(+), 12 de
From: Yang Zhang
Only deliver the posted interrupt when target vcpu is running
and there is no previous interrupt pending in pir.
Signed-off-by: Yang Zhang
---
arch/x86/include/asm/kvm_host.h |2 +
arch/x86/kvm/lapic.c| 13
arch/x86/kvm/lapic.h|1 +
a
From: Yang Zhang
Detect the posted interrupt feature. If it exists, then set it in vmcs_config.
Signed-off-by: Yang Zhang
---
arch/x86/include/asm/vmx.h |4 ++
arch/x86/kvm/vmx.c | 87 ++--
2 files changed, 71 insertions(+), 20 deletions(-)
From: Yang Zhang
Both TMR and EOI exit bitmap need to be updated when ioapic changed
or vcpu's id/ldr/dfr changed. So use common function instead eoi exit
bitmap specific function.
Signed-off-by: Yang Zhang
---
arch/ia64/kvm/lapic.h|6 --
arch/x86/kvm/lapic.c |2 +-
arch/x8
From: Yang Zhang
We already know the trigger mode of a given interrupt when programming
the ioapice entry. So it's not necessary to set it in each interrupt
delivery.
Signed-off-by: Yang Zhang
---
arch/x86/kvm/lapic.c | 15 +--
arch/x86/kvm/lapic.h |1 +
arch/x86/kvm/x86.c
From: Yang Zhang
The "acknowledge interrupt on exit" feature controls processor behavior
for external interrupt acknowledgement. When this control is set, the
processor acknowledges the interrupt controller to acquire the
interrupt vector on VM exit.
After enabling this feature, an interrupt whi
From: Yang Zhang
Posted Interrupt feature requires a special IPI to deliver posted interrupt
to guest. And it should has a high priority so the interrupt will not be
blocked by others.
Normally, the posted interrupt will be consumed by vcpu if target vcpu is
running and transparent to OS. But in
From: Yang Zhang
The follwoing patches are adding the Posted Interrupt supporting to KVM:
The first patch enables the feature 'acknowledge interrupt on vmexit'.Since
it is required by Posted interrupt, we need to enable it firstly.
And the subsequent patches are adding the posted interrupt suppo
On Sun, Mar 31, 2013 at 11:23:12AM +0300, Michael S. Tsirkin wrote:
> On Fri, Mar 29, 2013 at 02:27:50PM +0800, Asias He wrote:
> > On Thu, Mar 28, 2013 at 11:06:15AM +0200, Michael S. Tsirkin wrote:
> > > On Thu, Mar 28, 2013 at 04:47:15PM +0800, Asias He wrote:
> > > > On Thu, Mar 28, 2013 at 10:
On Sun, Mar 31, 2013 at 11:20:24AM +0300, Michael S. Tsirkin wrote:
> On Fri, Mar 29, 2013 at 02:22:52PM +0800, Asias He wrote:
> > On Thu, Mar 28, 2013 at 11:18:22AM +0200, Michael S. Tsirkin wrote:
> > > On Thu, Mar 28, 2013 at 04:10:02PM +0800, Asias He wrote:
> > > > On Thu, Mar 28, 2013 at 08:
From: Yang Zhang
Current interrupt coalescing logci which only used by RTC has conflict
with Posted Interrupt.
This patch introduces a new mechinism to use eoi to track interrupt:
When delivering an interrupt to vcpu, the pending_eoi set to number of
vcpu that received the interrupt. And decrease
From: Yang Zhang
Userspace may deliver RTC interrupt without query the status. So we
want to track RTC EOI for this case.
Signed-off-by: Yang Zhang
---
arch/x86/kvm/i8254.c |4 ++--
arch/x86/kvm/x86.c |6 --
include/linux/kvm_host.h | 11 +++
virt/kvm/assigned-d
From: Yang Zhang
Signed-off-by: Yang Zhang
---
arch/x86/kvm/lapic.c |9 +
arch/x86/kvm/lapic.h |2 ++
virt/kvm/ioapic.c| 43 +++
virt/kvm/ioapic.h|1 +
4 files changed, 55 insertions(+), 0 deletions(-)
diff --git a/arch/x86/
From: Yang Zhang
Add vcpu info to ioapic_update_eoi, so we can know which vcpu
issued this EOI.
Signed-off-by: Yang Zhang
---
arch/x86/kvm/lapic.c |2 +-
virt/kvm/ioapic.c| 12 ++--
virt/kvm/ioapic.h|3 ++-
3 files changed, 9 insertions(+), 8 deletions(-)
diff --git
From: Yang Zhang
Need the EOI to track interrupt deliver status, so force vmexit
on EOI for rtc interrupt when enabling virtual interrupt delivery.
Signed-off-by: Yang Zhang
---
virt/kvm/ioapic.c |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/virt/kvm/ioapic.c b/virt
From: Yang Zhang
Add a new parameter to know vcpus who received the interrupt.
Signed-off-by: Yang Zhang
---
arch/x86/kvm/lapic.c | 25 -
arch/x86/kvm/lapic.h |5 +++--
virt/kvm/ioapic.c|2 +-
virt/kvm/ioapic.h|2 +-
virt/kvm/irq_comm.c | 12 +++
From: Yang Zhang
rtc_status is used to track RTC interrupt delivery status. The pending_eoi
will be increased by vcpu who received RTC interrupt and will be decreased
when EOI to this interrupt.
Also, we use dest_map to record the destination vcpu to avoid the case that
vcpu who didn't get the RT
From: Yang Zhang
Current interrupt coalescing logci which only used by RTC has conflict
with Posted Interrupt.
This patch introduces a new mechinism to use eoi to track interrupt:
When delivering an interrupt to vcpu, the pending_eoi set to number of
vcpu that received the interrupt. And decreas
Zhang, Yang Z wrote on 2013-03-21:
> From: Yang Zhang
>
> For a given vcpu, kvm_apic_match_dest() will tell you whether
> the vcpu in the destination list quickly. Drop kvm_calculate_eoi_exitmap()
> and use kvm_apic_match_dest() instead.
>
> Signed-off-by: Yang Zhang
> ---
> arch/x86/kvm/lapic
On Tue, Mar 26, 2013 at 09:57:00AM -0700, Christoffer Dall wrote:
> Hi guys,
>
> I have an x86 question that I really hope you can help with:
>
> Running the kvm-unit-tests on x86, I see a quite large difference
> between I/O from the kernel, and I/O user (around 6,000 cycles) on two
> separate p
On 31.03.2013, at 12:49, Gleb Natapov wrote:
> On Tue, Mar 26, 2013 at 11:37:42AM -0500, Scott Wood wrote:
>> On 03/25/2013 08:33:12 PM, Gleb Natapov wrote:
>>> On Tue, Mar 26, 2013 at 12:35:09AM +0100, Alexander Graf wrote:
On 26.03.2013, at 00:16, Scott Wood wrote:
> On 03/
On Tue, Mar 26, 2013 at 11:37:42AM -0500, Scott Wood wrote:
> On 03/25/2013 08:33:12 PM, Gleb Natapov wrote:
> >On Tue, Mar 26, 2013 at 12:35:09AM +0100, Alexander Graf wrote:
> >>
> >> On 26.03.2013, at 00:16, Scott Wood wrote:
> >>
> >> > On 03/25/2013 05:59:39 PM, Alexander Graf wrote:
> >> >> O
On Fri, Mar 29, 2013 at 02:27:50PM +0800, Asias He wrote:
> On Thu, Mar 28, 2013 at 11:06:15AM +0200, Michael S. Tsirkin wrote:
> > On Thu, Mar 28, 2013 at 04:47:15PM +0800, Asias He wrote:
> > > On Thu, Mar 28, 2013 at 10:33:30AM +0200, Michael S. Tsirkin wrote:
> > > > On Thu, Mar 28, 2013 at 04:
On Fri, Mar 29, 2013 at 02:22:52PM +0800, Asias He wrote:
> On Thu, Mar 28, 2013 at 11:18:22AM +0200, Michael S. Tsirkin wrote:
> > On Thu, Mar 28, 2013 at 04:10:02PM +0800, Asias He wrote:
> > > On Thu, Mar 28, 2013 at 08:16:59AM +0200, Michael S. Tsirkin wrote:
> > > > On Thu, Mar 28, 2013 at 10:
On Fri, Mar 29, 2013 at 04:33:09AM +, Nicholas A. Bellinger wrote:
> From: Nicholas Bellinger
>
> Hi folks,
>
> This series adds a virtio_queue_valid() for use by virtio-pci code in
> order to prevent opreations upon uninitialized VQs, that is currently
> expected to occur during seabios set
On Fri, Mar 29, 2013 at 04:33:12AM +, Nicholas A. Bellinger wrote:
> From: Nicholas Bellinger
>
> With the virtio_queue_valid() checks in place to skip uninitialized VQs
> within virtio-pci code, go ahead and skip the same uninitialized VQs
> during vhost_verify_ring_mappings().
>
> Note thi
On Fri, Mar 29, 2013 at 04:33:11AM +, Nicholas A. Bellinger wrote:
> From: Nicholas Bellinger
>
> This patch adds a number of virtio_queue_valid() checks to virtio-pci
> ahead of virtio_queue_get_num() usage in order to skip operation upon
> the detection of an uninitialized VQ.
>
> There is
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