KVM-Autotest: server problem

Hi Lucas, Since I consider you our Autotest reference I direct the following question to you. Currently our Autotest servers run tests in client mode using the same control file on all hosts. We want to move on to dispatching tests from the server, using a server control file, so that each hos

[ kvm-Bugs-2793225 ] Windows XP crashes on first boot after install on AMD64

Bugs item #2793225, was opened at 2009-05-18 10:04 Message generated for change (Tracker Item Submitted) made by alain_knaff You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2793225&group_id=180599 Please note that this message will contain a full copy of

Re: [PATCH] kvm: discard masking checking when initial MSI-X entries

Sheng Yang wrote: This meant to be with commit: adcf3594f9580bdf9b5e71f271b6088b185e017e, otherwise QEmu only counts the MSI-X entries, but won't fill it... Applied, thanks. -- error compiling committee.c: too many arguments to function -- To unsubscribe from this list: send the line "unsu

Re: Network hangs after some time

Hi, what kvm module/userspace versions are You using? n. On Sun, May 17, 2009 at 11:32:44PM -0300, Wagner Sartori Junior wrote: > Hello, > > I'm needin' some help. The network in guests hangs(I can't ping from > my house the guest) after some time(from 10 minutes to some hours) and > stops in one

[PATCH] Drop interrupt shadow when single stepping should be done only on VMX.

The problem exists only on VMX. Also currently we skip this step if there is pending exception. The patch fixes this too. Signed-off-by: Gleb Natapov --- arch/x86/kvm/vmx.c |8 arch/x86/kvm/x86.c |3 --- 2 files changed, 8 insertions(+), 3 deletions(-) diff --git a/arch/x86/kvm

[PATCH] [APIC] Optimize searching for highest IRR

Most of the time IRR is empty, so instead of scanning the whole IRR on each VM entry keep a variable that tells us if IRR is not empty. IRR will have to be scanned twice on each IRQ delivery, but this is much more rare than VM entry. Signed-off-by: Gleb Natapov --- arch/x86/kvm/lapic.c | 19 ++

[PATCH] If interrupt injection is not possible do not scan IRR.

Signed-off-by: Gleb Natapov --- arch/x86/kvm/i8259.c |5 + arch/x86/kvm/irq.c |1 - arch/x86/kvm/x86.c |9 + 3 files changed, 10 insertions(+), 5 deletions(-) diff --git a/arch/x86/kvm/i8259.c b/arch/x86/kvm/i8259.c index 1ccb50c..d32ceac 100644 --- a/arch/x86/kvm/i8

Re: [PATCH] If interrupt injection is not possible do not scan IRR.

Gleb Natapov wrote: @@ -3174,10 +3174,11 @@ static void inject_pending_irq(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) vcpu->arch.nmi_injected = true; kvm_x86_ops->set_nmi(vcpu); } - } else if (kvm_cpu_has_interrupt(vcpu))

[PATCH v2] Allow to override sync source

Avi Kivity wrote: > Jan Kiszka wrote: >> In order to allow sync'ing the kmod dir against arbitrary kernels trees, >> extend the sync script to accept alternative paths and adjust the >> Makefile accordingly. >> >> @@ -17,6 +17,7 @@ ORIGMODDIR = $(patsubst %/build,%/kernel,$(KERNELDIR)) >> >> rpm

Re: [PATCH 06/17] Use statfs to determine size of huge pages

On Sun, May 17, 2009 at 08:00:40PM +0300, Avi Kivity wrote: > Anthony Liguori wrote: >> From: Joerg Roedel >> >> The current method of finding out the size of huge pages does not work >> reliably anymore. Current Linux supports more than one huge page size >> but /proc/meminfo only show one of the

Re: [PATCH] If interrupt injection is not possible do not scan IRR.

On Mon, May 18, 2009 at 12:00:40PM +0300, Avi Kivity wrote: > Gleb Natapov wrote: >> @@ -3174,10 +3174,11 @@ static void inject_pending_irq(struct kvm_vcpu >> *vcpu, struct kvm_run *kvm_run) >> vcpu->arch.nmi_injected = true; >> kvm_x86_ops->set_nmi(vcpu);

[PATCH 03/43] KVM: Split IOAPIC structure

From: Sheng Yang Prepared for reuse ioapic_redir_entry for MSI. Signed-off-by: Sheng Yang Signed-off-by: Avi Kivity --- include/linux/kvm_types.h | 17 + virt/kvm/ioapic.c |6 +++--- virt/kvm/ioapic.h | 17 + 3 files changed, 21 insertio

[PATCH 01/43] KVM: VMX: Don't use highmem pages for the msr and pio bitmaps

Highmem pages are a pain, and saving three lowmem pages on i386 isn't worth the extra code. Signed-off-by: Avi Kivity --- arch/x86/kvm/vmx.c | 59 ++-- 1 files changed, 25 insertions(+), 34 deletions(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86

[PATCH 04/43] KVM: Unify the delivery of IOAPIC and MSI interrupts

From: Sheng Yang Signed-off-by: Sheng Yang Signed-off-by: Avi Kivity --- include/linux/kvm_host.h |3 + virt/kvm/ioapic.c| 91 --- virt/kvm/irq_comm.c | 95 -- 3 files changed, 95 insertion

[PATCH 02/43] KVM: VMX: Don't intercept MSR_KERNEL_GS_BASE

Windows 2008 accesses this MSR often on context switch intensive workloads; since we run in guest context with the guest MSR value loaded (so swapgs can work correctly), we can simply disable interception of rdmsr/wrmsr for this MSR. A complication occurs since in legacy mode, we run with the host

[PATCH 05/43] KVM: Change API of kvm_ioapic_get_delivery_bitmask

From: Sheng Yang In order to use with bit ops. Signed-off-by: Sheng Yang Signed-off-by: Avi Kivity --- virt/kvm/ioapic.c | 17 - virt/kvm/ioapic.h |4 ++-- virt/kvm/irq_comm.c |5 +++-- 3 files changed, 13 insertions(+), 13 deletions(-) diff --git a/virt/kvm/ioa

[PATCH 07/43] KVM: bit ops for deliver_bitmap

From: Sheng Yang It's also convenient when we extend KVM supported vcpu number in the future. Signed-off-by: Sheng Yang Signed-off-by: Avi Kivity --- arch/x86/kvm/lapic.c |7 --- virt/kvm/ioapic.c| 24 +--- virt/kvm/irq_comm.c | 17 + 3 fil

[PATCH 09/43] KVM: Add MSI-X interrupt injection logic

From: Sheng Yang We have to handle more than one interrupt with one handler for MSI-X. Avi suggested to use a flag to indicate the pending. So here is it. Signed-off-by: Sheng Yang Signed-off-by: Avi Kivity --- include/linux/kvm_host.h |1 + virt/kvm/kvm_main.c | 66 +++

[PATCH 14/43] KVM: PIT: remove unused scheduled variable

From: Marcelo Tosatti Unused. Signed-off-by: Marcelo Tosatti Signed-off-by: Avi Kivity --- arch/x86/kvm/i8254.c |1 - arch/x86/kvm/i8254.h |1 - 2 files changed, 0 insertions(+), 2 deletions(-) diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c index c13bb92..3eddae6 100644 ---

[PATCH 11/43] KVM: x86: silence preempt warning on kvm_write_guest_time

From: Matt T. Yourst This issue just appeared in kvm-84 when running on 2.6.28.7 (x86-64) with PREEMPT enabled. We're getting syslog warnings like this many (but not all) times qemu tells KVM to run the VCPU: BUG: using smp_processor_id() in preemptible [] code: qemu-system-x86/28938 ca

[PATCH 08/43] KVM: Ioctls for init MSI-X entry

From: Sheng Yang Introduce KVM_SET_MSIX_NR and KVM_SET_MSIX_ENTRY two ioctls. This two ioctls are used by userspace to specific guest device MSI-X entry number and correlate MSI-X entry with GSI during the initialization stage. MSI-X should be well initialzed before enabling. Don't support cha

[PATCH 31/43] KVM: MMU: do not free active mmu pages in free_mmu_pages()

From: Gleb Natapov free_mmu_pages() should only undo what alloc_mmu_pages() does. Free mmu pages from the generic VM destruction function, kvm_destroy_vm(). Signed-off-by: Gleb Natapov Signed-off-by: Avi Kivity --- arch/x86/kvm/mmu.c |8 virt/kvm/kvm_main.c |2 ++ 2 files ch

[PATCH 17/43] KVM: ia64: fix compilation error in kvm_get_lowest_prio_vcpu

From: Yang Zhang Modify the arg of kvm_get_lowest_prio_vcpu(). Make it consistent with its declaration. Signed-off-by: Yang Zhang Signed-off-by: Marcelo Tosatti --- arch/ia64/kvm/kvm-ia64.c |2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/ia64/kvm/kvm-ia64.c b/ar

[PATCH 12/43] KVM: x86: paravirt skip pit-through-ioapic boot check

From: Marcelo Tosatti Skip the test which checks if the PIT is properly routed when using the IOAPIC, aimed at buggy hardware. Signed-off-by: Marcelo Tosatti Signed-off-by: Avi Kivity --- arch/x86/kernel/kvm.c |4 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/arch/x8

[PATCH 15/43] KVM: PIT: remove usage of count_load_time for channel 0

From: Marcelo Tosatti We can infer elapsed time from hrtimer_expires_remaining. Signed-off-by: Marcelo Tosatti Signed-off-by: Avi Kivity --- arch/x86/kvm/i8254.c | 37 +++-- 1 files changed, 31 insertions(+), 6 deletions(-) diff --git a/arch/x86/kvm/i8254.c

[PATCH 16/43] KVM: unify part of generic timer handling

From: Marcelo Tosatti Hide the internals of vcpu awakening / injection from the in-kernel emulated timers. This makes future changes in this logic easier and decreases the distance to more generic timer handling. Signed-off-by: Marcelo Tosatti Signed-off-by: Avi Kivity --- arch/x86/kvm/Makefi

[PATCH 06/43] KVM: Update intr delivery func to accept unsigned long* bitmap

From: Sheng Yang Would be used with bit ops, and would be easily extended if KVM_MAX_VCPUS is increased. Signed-off-by: Sheng Yang Signed-off-by: Avi Kivity --- arch/x86/kvm/lapic.c |8 virt/kvm/ioapic.h|2 +- virt/kvm/irq_comm.c |2 +- 3 files changed, 6 insertions(

[PATCH 19/43] KVM: MMU: remove call to kvm_mmu_pte_write from walk_addr

From: Joerg Roedel There is no reason to update the shadow pte here because the guest pte is only changed to dirty state. Signed-off-by: Joerg Roedel Signed-off-by: Marcelo Tosatti --- arch/x86/kvm/paging_tmpl.h |1 - 1 files changed, 0 insertions(+), 1 deletions(-) diff --git a/arch/x86

[PATCH 21/43] KVM: ioapic/msi interrupt delivery consolidation

From: Gleb Natapov ioapic_deliver() and kvm_set_msi() have code duplication. Move the code into ioapic_deliver_entry() function and call it from both places. Signed-off-by: Gleb Natapov Signed-off-by: Marcelo Tosatti --- include/linux/kvm_host.h |2 +- virt/kvm/ioapic.c| 61

[PATCH 28/43] KVM: ia64: Drop in SN2 replacement of fast path ITC emulation fault handler

From: Jes Sorensen Copy in SN2 RTC based ITC emulation for fast exit. The two versions have the same size, so a dropin is simpler than patching the branch instruction to hit the SN2 version. Signed-off-by: Jes Sorensen Acked-by: Xiantao Zhang Signed-off-by: Avi Kivity --- arch/ia64/include/a

[PATCH 18/43] KVM: Merge kvm_ioapic_get_delivery_bitmask into kvm_get_intr_delivery_bitmask

From: Sheng Yang Gleb fixed bitmap ops usage in kvm_ioapic_get_delivery_bitmask. Sheng merged two functions, as well as fixed several issues in kvm_get_intr_delivery_bitmask 1. deliver_bitmask is a bitmap rather than a unsigned long intereger. 2. Lowest priority target bitmap wrong calculated by

[PATCH 10/43] KVM: Enable MSI-X for KVM assigned device

From: Sheng Yang This patch finally enable MSI-X. What we need for MSI-X: 1. Intercept one page in MMIO region of device. So that we can get guest desired MSI-X table and set up the real one. Now this have been done by guest, and transfer to kernel using ioctl KVM_SET_MSIX_NR and KVM_SET_MSIX_EN

[PATCH 25/43] KVM: ia64: Map in SN2 RTC registers to the VMM module

From: Jes Sorensen On SN2, map in the SN2 RTC registers to the VMM module, needed for ITC emulation. Signed-off-by: Jes Sorensen Acked-by: Xiantao Zhang Signed-off-by: Avi Kivity --- arch/ia64/include/asm/kvm_host.h |2 + arch/ia64/include/asm/pgtable.h |2 + arch/ia64/kvm/kvm-ia64.

[PATCH 32/43] KVM: x86: Ignore reads to EVNTSEL MSRs

From: Amit Shah We ignore writes to the performance counters and performance event selector registers already. Kaspersky antivirus reads the eventsel MSR causing it to crash with the current behaviour. Return 0 as data when the eventsel registers are read to stop the crash. Signed-off-by: Amit

[PATCH 22/43] KVM: consolidate ioapic/ipi interrupt delivery logic

From: Gleb Natapov Use kvm_apic_match_dest() in kvm_get_intr_delivery_bitmask() instead of duplicating the same code. Use kvm_get_intr_delivery_bitmask() in apic_send_ipi() to figure out ipi destination instead of reimplementing the logic. Signed-off-by: Gleb Natapov Signed-off-by: Marcelo Tosa

[PATCH 20/43] KVM: APIC: kvm_apic_set_irq deliver all kinds of interrupts

From: Gleb Natapov Get rid of ioapic_inj_irq() and ioapic_inj_nmi() functions. Signed-off-by: Gleb Natapov Signed-off-by: Marcelo Tosatti --- arch/ia64/include/asm/kvm_host.h |1 - arch/ia64/kvm/kvm-ia64.c |8 +++--- arch/ia64/kvm/lapic.h|2 +- arch/x86/kvm/lap

[PATCH 23/43] KVM: change the way how lowest priority vcpu is calculated

From: Gleb Natapov The new way does not require additional loop over vcpus to calculate the one with lowest priority as one is chosen during delivery bitmap construction. Signed-off-by: Gleb Natapov Signed-off-by: Marcelo Tosatti --- arch/ia64/kvm/kvm-ia64.c| 15 +--- arch/i

[PATCH 43/43] KVM: Fix interrupt unhalting a vcpu when it shouldn't

From: Gleb Natapov kvm_vcpu_block() unhalts vpu on an interrupt/timer without checking if interrupt window is actually opened. Signed-off-by: Gleb Natapov Signed-off-by: Avi Kivity --- arch/ia64/kvm/kvm-ia64.c|6 ++ arch/powerpc/kvm/powerpc.c |6 ++ arch/s390/kvm/

[PATCH 40/43] KVM: VMX: Zero ept module parameter if ept is not present

Allows reading back hardware capability. Signed-off-by: Avi Kivity --- arch/x86/kvm/vmx.c |5 - 1 files changed, 4 insertions(+), 1 deletions(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 9b97c8e..2f65120 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -265,7

[PATCH 42/43] KVM: Timer event should not unconditionally unhalt vcpu.

From: Gleb Natapov Currently timer events are processed before entering guest mode. Move it to main vcpu event loop since timer events should be processed even while vcpu is halted. Timer may cause interrupt/nmi to be injected and only then vcpu will be unhalted. Signed-off-by: Gleb Natapov Si

[PATCH 24/43] KVM: APIC: get rid of deliver_bitmask

From: Gleb Natapov Deliver interrupt during destination matching loop. Signed-off-by: Gleb Natapov Acked-by: Xiantao Zhang Signed-off-by: Marcelo Tosatti --- arch/ia64/kvm/kvm-ia64.c | 33 - arch/ia64/kvm/lapic.h |4 +- arch/x86/kvm/lapic.c | 59

[PATCH 39/43] KVM: VMX: Zero the vpid module parameter if vpid is not supported

This allows reading back how the hardware is configured. Signed-off-by: Avi Kivity --- arch/x86/kvm/vmx.c |5 - 1 files changed, 4 insertions(+), 1 deletions(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index f4b6c4b..9b97c8e 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm

[PATCH 37/43] KVM: VMX: Simplify module parameter names

Instead of 'enable_vpid=1', use a simple 'vpid=1'. Signed-off-by: Avi Kivity --- arch/x86/kvm/vmx.c |6 +++--- 1 files changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 85f4fd5..a69ba6b 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.

[PATCH 41/43] KVM: VMX: Fold vm_need_ept() into callers

Trivial. Signed-off-by: Avi Kivity --- arch/x86/kvm/vmx.c | 33 ++--- 1 files changed, 14 insertions(+), 19 deletions(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 2f65120..da6461d 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -263,11

[PATCH 35/43] KVM: VMX: Make module parameters readable

Useful to see how the module was loaded. Signed-off-by: Avi Kivity --- arch/x86/kvm/vmx.c | 10 +- 1 files changed, 5 insertions(+), 5 deletions(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 2c0a2ed..469787c 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -

[PATCH 30/43] KVM: Device assignment framework rework

From: Sheng Yang After discussion with Marcelo, we decided to rework device assignment framework together. The old problems are kernel logic is unnecessary complex. So Marcelo suggest to split it into a more elegant way: 1. Split host IRQ assign and guest IRQ assign. And userspace determine the

[PATCH 36/43] KVM: VMX: Rename kvm_handle_exit() to vmx_handle_exit()

It is a static vmx-specific function. Signed-off-by: Avi Kivity --- arch/x86/kvm/vmx.c |4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 469787c..85f4fd5 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -3162,7 +3

[PATCH 29/43] KVM: make 'lapic_timer_ops' and 'kpit_ops' static

From: Hannes Eder Fix this sparse warnings: arch/x86/kvm/lapic.c:916:22: warning: symbol 'lapic_timer_ops' was not declared. Should it be static? arch/x86/kvm/i8254.c:268:22: warning: symbol 'kpit_ops' was not declared. Should it be static? Signed-off-by: Hannes Eder Signed-off-by: Avi Ki

[PATCH 27/43] KVM: ia64: SN2 adjust emulated ITC frequency to match RTC frequency

From: Jes Sorensen On SN2 do not pass down the real ITC frequency, but rather patch the values to match the SN2 RTC frequency. Signed-off-by: Jes Sorensen Acked-by: Xiantao Zhang Signed-off-by: Avi Kivity --- arch/ia64/kvm/kvm_fw.c | 28 +++- 1 files changed, 27 ins

[PATCH 33/43] KVM: SVM: Remove duplicate code in svm_do_inject_vector()

From: Gleb Natapov svm_do_inject_vector() reimplements pop_irq(). Signed-off-by: Gleb Natapov Signed-off-by: Avi Kivity --- arch/x86/kvm/svm.c | 10 +- 1 files changed, 1 insertions(+), 9 deletions(-) diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 1f8510c..5b35ebd 10064

[PATCH 00/43] KVM updates for the 2.6.31 merge window (batch 1/4)

Following is my queue for the 2.6.31 merge window that is now approaching. Please review. Amit Shah (1): KVM: x86: Ignore reads to EVNTSEL MSRs Avi Kivity (9): KVM: VMX: Don't use highmem pages for the msr and pio bitmaps KVM: VMX: Don't intercept MSR_KERNEL_GS_BASE KVM: VMX: Make module

[PATCH 38/43] KVM: VMX: Annotate module parameters as __read_mostly

Signed-off-by: Avi Kivity --- arch/x86/kvm/vmx.c | 10 +- 1 files changed, 5 insertions(+), 5 deletions(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index a69ba6b..f4b6c4b 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -38,19 +38,19 @@ MODULE_AUTHOR("Qumranet")

[PATCH 34/43] KVM: reuse (pop|push)_irq from svm.c in vmx.c

From: Gleb Natapov The prioritized bit vector manipulation functions are useful in both vmx and svm. Signed-off-by: Gleb Natapov Signed-off-by: Avi Kivity --- arch/x86/kvm/svm.c | 25 - arch/x86/kvm/vmx.c | 17 ++--- arch/x86/kvm/x86.h | 18 ++

[PATCH 26/43] KVM: ia64: Create inline function kvm_get_itc() to centralize ITC reading.

From: Jes Sorensen Move all reading of special register 'AR_ITC' into two functions, one in the kernel and one in the VMM module. When running on SN2, base the result on the RTC rather the system ITC, as the ITC isn't synchronized. Signed-off-by: Jes Sorensen Acked-by: Xiantao Zhang Signed-off

[PATCH 13/43] KVM: declare ioapic functions only on affected hardware

From: Christian Borntraeger Since "KVM: Unify the delivery of IOAPIC and MSI interrupts" I get the following warnings: CC [M] arch/s390/kvm/kvm-s390.o In file included from arch/s390/kvm/kvm-s390.c:22: include/linux/kvm_host.h:357: warning: 'struct kvm_ioapic' declared inside parameter list

Re: virtio net regression

Antoine Martin wrote: Hi, Here is another one, any ideas? These oopses do look quite deep. Is it normal to end up in tcp_send_ack from pdflush?? I think it can happen anywhere, part of the net softirq. Cheers Antoine [929492.154634] pdflush: page allocation failure. order:0, mode:0x20

[PATCH] kvm: ia64: fix up compilation error

add iommu_flags for struct kvm_arch in ia64 Signed-off-by: Yang Zhang Signed-off-by: Xiantao Zhang diff --git a/arch/ia64/include/asm/kvm_host.h b/arch/ia64/include/asm/kvm_host.h index 589536f..012aca0 100644 --- a/arch/ia64/include/asm/kvm_host.h +++ b/arch/ia64/include/asm/kvm_host.h @@ -468

Re: kvm 84 update

Brent A Nelson wrote: Well, I just tried disabling smp on my guest, and live migration worked fine. I see that there are already SMP complaints with live migration in KVM:84 in the bug database, so I guess this is just another, "Me, too." Is this expected to be fixed in the soon-to-be-releas

RE: [PATCH 2/2] Intel-IOMMU, intr-remap: source-id checking

Ingo Molnar wrote: > * Han, Weidong wrote: > >> Siddha, Suresh B wrote: >>> On Wed, 2009-05-06 at 23:16 -0700, Han, Weidong wrote: @@ -634,6 +694,44 @@ static int ir_parse_ioapic_scope(struct acpi_dmar_header *header, " 0x%Lx\n",

Re: [PATCH] kvm: ia64: fix up compilation error

Zhang, Yang wrote: add iommu_flags for struct kvm_arch in ia64 Thanks, I already fixed it (in the same way). -- 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...@vger.kernel.or

Re: [PATCHv6 4/4] virtio_pci: optional MSI-X support

On Mon, May 18, 2009 at 12:30:49AM +0300, Avi Kivity wrote: > Michael S. Tsirkin wrote: >> This implements optional MSI-X support in virtio_pci. >> MSI-X is used whenever the host supports at least 2 MSI-X >> vectors: 1 for configuration changes and 1 for virtqueues. >> Per-virtqueue vectors are al

Re: [PATCH v2] Shared memory device with interrupt support

Avi Kivity wrote: > Cam Macdonell wrote: >>> >>> If my understanding is correct both the VM's who wants to >>> communicate would gives this path in the command line with one of >>> them specifying as "server". >> >> Exactly, the one with the "server" in the parameter list will wait >> for a connect

Re: [PATCH v4] kvm: Use a bitmap for tracking used GSIs

On Sun, May 17, 2009 at 11:47:53PM +0300, Avi Kivity wrote: > Alex Williamson wrote: >> On Wed, 2009-05-13 at 08:33 -0600, Alex Williamson wrote: >> >>> On Wed, 2009-05-13 at 08:15 -0600, Alex Williamson wrote: >>> On Wed, 2009-05-13 at 16:55 +0300, Michael S. Tsirkin wrote:

Re: [PATCH] If interrupt injection is not possible do not scan IRR.

Forget to remove debug output before submitting. Resending. Signed-off-by: Gleb Natapov diff --git a/arch/x86/kvm/i8259.c b/arch/x86/kvm/i8259.c index 1ccb50c..d32ceac 100644 --- a/arch/x86/kvm/i8259.c +++ b/arch/x86/kvm/i8259.c @@ -218,6 +218,11 @@ int kvm_pic_read_irq(struct kvm *kvm) s

RE: KVM_HYPERCALL

Hi Avi - Yes the control is not coming to neither " kvm_handle_exit " nor "handle_vmcall" after the hypercall is made from the guest. If I am not wrong, the "KVM_HYPERCALL" instruction is expected to work, isn't it? Thx, Venkat -Original Message- From: Avi Kivity [mailto:a...@redhat.c

RE: KVM_HYPERCALL

Hi Avi - Yes the control is not coming to neither " kvm_handle_exit " nor "handle_vmcall" after the hypercall is made from the guest. If I am not wrong, the "KVM_HYPERCALL" instruction is expected to work, isn't it? Thx, Venkat -Original Message- From: Avi Kivity [mailto:a...@redhat.c

Re: KVM_HYPERCALL

Kumar, Venkat wrote: Hi Avi - Yes the control is not coming to neither " kvm_handle_exit " nor "handle_vmcall" after the hypercall is made from the guest. If I am not wrong, the "KVM_HYPERCALL" instruction is expected to work, isn't it? Yes, it should. Are you sure the guest is executing

Re: [PATCH] Set bit 1 in disabled processor's _STA

On Mon, May 18, 2009 at 08:53:58AM +0300, Gleb Natapov wrote: > On Mon, May 18, 2009 at 08:44:54AM +0300, Avi Kivity wrote: > > Gleb Natapov wrote: > >> On Sun, May 17, 2009 at 11:07:31PM +0300, Avi Kivity wrote: > >> > >>> Gleb Natapov wrote: > >>> > Theoretically we can provide diffe

Re: [PATCH v4] kvm: Use a bitmap for tracking used GSIs

Michael S. Tsirkin wrote: On Sun, May 17, 2009 at 11:47:53PM +0300, Avi Kivity wrote: Alex Williamson wrote: On Wed, 2009-05-13 at 08:33 -0600, Alex Williamson wrote: On Wed, 2009-05-13 at 08:15 -0600, Alex Williamson wrote: On Wed, 2009-05-13 at 16:55 +0300, M

Re: [PATCH v2] Shared memory device with interrupt support

Gregory Haskins wrote: I'll just add that you could tie the irqfd to an iosignalfd to eliminate the involvement of qemu on either side as well. I'm not sure if that really works with the design of this particular device (e.g. perhaps qemu is needed for other reasons besides signaling), but it is

Re: [PATCH] Set bit 1 in disabled processor's _STA

On Mon, May 18, 2009 at 08:39:43AM -0300, Glauber Costa wrote: > > Now I recall something on LKML about this. Well, in this case Linux > > shouldn't have used ACPI to invent its own way to do cpu hot-plug. > It didn't. > History shows that this method is what is used in some unisys machines, > whic

Re: [PATCH 6/6] Nested SVM: Improve interrupt injection

On 17.05.2009, at 08:48, Gleb Natapov wrote: On Fri, May 15, 2009 at 10:22:20AM +0200, Alexander Graf wrote: static void svm_set_irq(struct kvm_vcpu *vcpu, int irq) { struct vcpu_svm *svm = to_svm(vcpu); - nested_svm_intr(svm); + if(!(svm->vcpu.arch.hflags & HF_GIF_MASK))

Re: KVM-Autotest: server problem

On Mon, 2009-05-18 at 04:01 -0400, Michael Goldish wrote: > Hi Lucas, > > Since I consider you our Autotest reference I direct the following question > to you. > > Currently our Autotest servers run tests in client mode using the same > control file on all hosts. We want to move on to dispatchi

Re: KVM_HYPERCALL

Kumar, Venkat wrote: > Hi Avi - Yes the control is not coming to neither " kvm_handle_exit " nor > "handle_vmcall" after the hypercall is made from the guest. > If I am not wrong, the "KVM_HYPERCALL" instruction is expected to work, isn't > it? > Hi Venkat, I have used this method of IO man

Re: [PATCH, RFC] virtio_blk: add cache flush command

On Mon, May 11, 2009 at 01:29:06PM -0500, Anthony Liguori wrote: > >It don't think we realistically can. > > Maybe two fds? One open in O_SYNC and one not. Is such a thing sane? O_SYNC and O_DIRECT currently behave exactly in the same way. In none of the filesystem I've looked at there is an e

Re: [PATCH, RFC] virtio_blk: add cache flush command

On Tue, May 12, 2009 at 11:35:23AM +0300, Avi Kivity wrote: > >The cache size on disks is constantly growing, and if you lose cache > >it doesn't really matter how much you lose but what you lose. > > > > Software errors won't cause data loss on a real disk (firmware bugs > will, but the firmwa

Re: [PATCH, RFC] virtio_blk: add cache flush command

On Tue, May 12, 2009 at 04:18:36PM +0200, Christian Borntraeger wrote: > Am Tuesday 12 May 2009 15:54:14 schrieb Rusty Russell: > > On Mon, 11 May 2009 06:09:08 pm Christoph Hellwig wrote: > > > Do we need a new feature flag for this command or can we expect that > > > all previous barrier support

RE: [PATCH v2] Shared memory device with interrupt support

Cam - I got your patch to work but without notifications. I could share memory using the patch but notifications aren't working. I bring up two VM's with option "-ivshmem shrmem,1024,/dev/shm/shrmem,server" and "-ivshmem shrmem,1024,/dev/shm/shrmem" respectively. When I make an "ioctl" from one

Re: [PATCH 0/2] Add serial number support for virtio_blk, V2

On Wed, May 13, 2009 at 01:06:57PM -0400, john cooper wrote: > [Resend of earlier patch: 1/2 rebased to qemu-kvm, > 2/2 minor tweak] patch 1/2 seems to be missing. > Equivalent functionality currently exists for IDE > and SCSI, however it is not yet implemented for > virtio. So why can't we re-u

[PATCH] cleanup arch/x86/kvm/Makefile

Use proper foo-y style list additions to cleanup all the conditionals, move module selection after compound object selection and remove the superflous comment. Signed-off-by: Christoph Hellwig Index: linux-2.6/arch/x86/kvm/Makefile ===

Re: [PATCH v4] kvm: Use a bitmap for tracking used GSIs

On Mon, May 18, 2009 at 02:36:41PM +0300, Avi Kivity wrote: > Michael S. Tsirkin wrote: >> On Sun, May 17, 2009 at 11:47:53PM +0300, Avi Kivity wrote: >> >>> Alex Williamson wrote: >>> On Wed, 2009-05-13 at 08:33 -0600, Alex Williamson wrote: > On Wed, 2009-05-13 at 0

RE: KVM_HYPERCALL

Ok. With KVM-85 it works. I was using KVM-84 earlier. Thx, Venkat -Original Message- From: Avi Kivity [mailto:a...@redhat.com] Sent: Monday, May 18, 2009 5:03 PM To: Kumar, Venkat Cc: kvm@vger.kernel.org Subject: Re: KVM_HYPERCALL Kumar, Venkat wrote: > Hi Avi - Yes the control is not

Re: [PATCH v4] kvm: Use a bitmap for tracking used GSIs

Michael S. Tsirkin wrote: On the other hand, in MSI-X mask bit is mandatory, not optional so we'll have to support it for assigned devices at some point. If we are worried about speed of masking/unmasking MSI-X interrupts for assigned devices (older kernels used to mask them, recent kernels le

Re: [PATCH] Set bit 1 in disabled processor's _STA

On Mon, May 18, 2009 at 02:40:18PM +0300, Gleb Natapov wrote: > On Mon, May 18, 2009 at 08:39:43AM -0300, Glauber Costa wrote: > > > Now I recall something on LKML about this. Well, in this case Linux > > > shouldn't have used ACPI to invent its own way to do cpu hot-plug. > > It didn't. > > Histor

Re: [PATCH] Set bit 1 in disabled processor's _STA

On Mon, May 18, 2009 at 09:40:03AM -0300, Glauber Costa wrote: > On Mon, May 18, 2009 at 02:40:18PM +0300, Gleb Natapov wrote: > > On Mon, May 18, 2009 at 08:39:43AM -0300, Glauber Costa wrote: > > > > Now I recall something on LKML about this. Well, in this case Linux > > > > shouldn't have used A

Re: [PATCH 0/6] Add rudimentary Hyper-V guest support

On 17.05.2009, at 23:08, Avi Kivity wrote: Alexander Graf wrote: In order to find out why things were slow with nested SVM I hacked intercept reporting into debugfs in my local tree and found pretty interesting results (using NPT): [...] So apparently the most intercepts come from the

Re: [PATCH] Set bit 1 in disabled processor's _STA

On Mon, May 18, 2009 at 03:42:10PM +0300, Gleb Natapov wrote: > On Mon, May 18, 2009 at 09:40:03AM -0300, Glauber Costa wrote: > > On Mon, May 18, 2009 at 02:40:18PM +0300, Gleb Natapov wrote: > > > On Mon, May 18, 2009 at 08:39:43AM -0300, Glauber Costa wrote: > > > > > Now I recall something on L

Re: [PATCH 3/6] Emulator: Inject #PF when page was not found

On 17.05.2009, at 22:58, Avi Kivity wrote: Alexander Graf wrote: I can't think why it was done for writes. Normally, a guest page fault would be trapped and reflected a long time before emulation, in FNAME(page_fault)(), after walk_addr(). Can you give some details on the situation? W

Re: [PATCH 5/6] Nested SVM: Implement INVLPGA

On 15.05.2009, at 15:43, Joerg Roedel wrote: On Fri, May 15, 2009 at 10:22:19AM +0200, Alexander Graf wrote: SVM adds another way to do INVLPG by ASID which Hyper-V makes use of, so let's implement it! For now we just do the same thing invlpg does, as asid switching means we flush the mmu any

Re: [PATCH 06/17] Use statfs to determine size of huge pages

Joerg Roedel wrote: On Sun, May 17, 2009 at 08:00:40PM +0300, Avi Kivity wrote: Anthony Liguori wrote: From: Joerg Roedel The current method of finding out the size of huge pages does not work reliably anymore. Current Linux supports more than one huge page size but /proc/meminfo only

virtio-net zero-copy

Greetings, Could someone let me know if current virtio-net supports zero-copy? I see some discussion here: http://thread.gmane.org/gmane.comp.emulators.kvm.devel/28061/ (copyless virtio net thoughts) and it looks like the copyless virtio-net is not supported by KVM yet. If this is true, then is th

Re: [PATCH 06/17] Use statfs to determine size of huge pages

On Mon, May 18, 2009 at 08:10:28AM -0500, Anthony Liguori wrote: > Joerg Roedel wrote: >> On Sun, May 17, 2009 at 08:00:40PM +0300, Avi Kivity wrote: >> >>> Anthony Liguori wrote: >>> From: Joerg Roedel The current method of finding out the size of huge pages does not work >

Re: [PATCH 0/6] Add rudimentary Hyper-V guest support

Alexander Graf wrote: There's only a limited potential here (a factor of three, reducing 6 exits to 2, less the emulation overhead). There's a lot more to be gained from nested npt, since you'll avoid most of the original exits in the first place. I think the reversed is the case. Look at

Re: [PATCH 0/6] Add rudimentary Hyper-V guest support

On 18.05.2009, at 15:29, Avi Kivity wrote: Alexander Graf wrote: There's only a limited potential here (a factor of three, reducing 6 exits to 2, less the emulation overhead). There's a lot more to be gained from nested npt, since you'll avoid most of the original exits in the first pl

Re: [PATCH 0/6] Add rudimentary Hyper-V guest support

Alexander Graf wrote: Of course, this all depends on the workload. For kernbench style benchmarks nested NPT probably gives you a bigger win, but anything doing IO is slowed down way more than it has to now. What is causing 17K pio exits/sec? What port numbers? Any hints on how to easily fi

Re: [PATCH v4] kvm: Use a bitmap for tracking used GSIs

On Mon, May 18, 2009 at 03:33:20PM +0300, Avi Kivity wrote: > Michael S. Tsirkin wrote: >>> On the other hand, in MSI-X mask bit is mandatory, not optional so we'll have to support it for assigned devices at some point. If we are worried about speed of masking/unmasking MSI-X in

Re: [PATCH v4] kvm: Use a bitmap for tracking used GSIs

Michael S. Tsirkin wrote: On Mon, May 18, 2009 at 03:33:20PM +0300, Avi Kivity wrote: Michael S. Tsirkin wrote: On the other hand, in MSI-X mask bit is mandatory, not optional so we'll have to support it for assigned devices at some point. If we are worried about speed of masking/unmas

Re: virtio-net zero-copy

Raju Srivastava wrote: Greetings, Could someone let me know if current virtio-net supports zero-copy? I see some discussion here: http://thread.gmane.org/gmane.comp.emulators.kvm.devel/28061/ (copyless virtio net thoughts) and it looks like the copyless virtio-net is not supported by KVM yet.

Re: [PATCH 05/17] Stop/start cpus before/after devices

On Sun, May 17, 2009 at 07:59:51PM +0300, Avi Kivity wrote: > Anthony Liguori wrote: >> From: Yaniv Kamay >> >> Stop cpus before devices when stopping the VM, start cpus after devices >> when starting VM. Otherwise a vcpu could access a stopped device. >> >> > > IIRC we decided this was unnece

Re: [PATCH] cleanup arch/x86/kvm/Makefile

Christoph Hellwig wrote: Use proper foo-y style list additions to cleanup all the conditionals, move module selection after compound object selection and remove the superflous comment. I think you're patching the wrong tree. -kvm-objs := $(common-objs) x86.o mmu.o x86_emulate.o i8259.o ir

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