Re: qemu-kvm crash with

On Thu, Mar 24, 2011 at 1:38 PM, Conor Murphy conor_murphy_v...@hotmail.com wrote: #4  _int_free (av=value optimized out, p=0x7fa24c0009f0, have_lock=0) at malloc.c:4795 #5  0x004a18fe in qemu_vfree (ptr=0x7fa24c000a00) at oslib-posix.c:76 #6  0x0045af3d in handle_aiocb_rw

Re: [PATCHv2] fix regression caused by e48672fa25e879f7ae21785c7efd187738139593

On 03/09/2011 05:36 PM, Nikola Ciprich wrote: commit 387b9f97750444728962b236987fbe8ee8cc4f8c moved kvm_request_guest_time_update(vcpu), breaking 32bit SMP guests using kvm-clock. Fix this by moving (new) clock update function to proper place. Signed-off-by: Nikola

[PATCH 1/6] KVM: SVM: Implement infrastructure for TSC_RATE_MSR

This patch enhances the kvm_amd module with functions to support the TSC_RATE_MSR which can be used to set a given tsc frequency for the guest vcpu. Signed-off-by: Joerg Roedel joerg.roe...@amd.com --- arch/x86/include/asm/msr-index.h |1 + arch/x86/kvm/svm.c | 54

[PATCH 5/6] KVM: X86: Delegate tsc-offset calculation to architecture code

With TSC scaling in SVM the tsc-offset needs to be calculated differently. This patch propagates this calculation into the architecture specific modules so that this complexity can be handled there. Signed-off-by: Joerg Roedel joerg.roe...@amd.com --- arch/x86/include/asm/kvm_host.h |2 ++

[PATCH 4/6] KVM: X86: Implement call-back to propagate virtual_tsc_khz

This patch implements a call-back into the architecture code to allow the propagation of changes to the virtual tsc_khz of the vcpu. On SVM it updates the tsc_ratio variable, on VMX it does nothing. Signed-off-by: Joerg Roedel joerg.roe...@amd.com --- arch/x86/include/asm/kvm_host.h |1 +

[PATCH 2/6] KVM: X86: Let kvm-clock report the right tsc frequency

This patch changes the kvm_guest_time_update function to use TSC frequency the guest actually has for updating its clock. Signed-off-by: Joerg Roedel joerg.roe...@amd.com --- arch/x86/include/asm/kvm_host.h |6 +++--- arch/x86/kvm/x86.c | 25 +++-- 2 files

[PATCH 3/6] KVM: X86: Make tsc_delta calculation a function of guest tsc

The calculation of the tsc_delta value to ensure a forward-going tsc for the guest is a function of the host-tsc. This works as long as the guests tsc_khz is equal to the hosts tsc_khz. With tsc-scaling hardware support this is not longer true and the tsc_delta needs to be calculated using

[PATCH 6/6] KVM: X86: Implement userspace interface to set virtual_tsc_khz

This patch implements two new vm-ioctls to get and set the virtual_tsc_khz if the machine supports tsc-scaling. Setting the tsc-frequency is only possible before userspace creates any vcpu. Signed-off-by: Joerg Roedel joerg.roe...@amd.com --- Documentation/kvm/api.txt | 23

[PATCH 0/6] TSC scaling support for KVM v3

Hi, this is the third round of my patches to support tsc-scaling in KVM. The changes to v2 address Avi's comments from yesterday. Besides that the whole virtual_tsc_khz thing has been moved out of the vm into the vcpu data structure. The mult and shift parts where renamed to tsc_catchup_* because

Re: qemu-kvm crash with

Hi, The content of aiocb (gdb) print *aiocb $1 = {common = {pool = 0x9aced0, bs = 0x1270230, cb = 0x45591f multiwrite_cb, opaque = 0x7f54b0034f60, next = 0x0}, aio_fildes = 16, {aio_iov = 0x7f54b006cd48, aio_ioctl_buf = 0x7f54b006cd48}, aio_niov = 17, aio_nbytes = 65024, ev_signo = 12,

[PATCH 01/13] KVM: x86 emulator: add framework for instruction

From: Avi Kivity a...@redhat.com When running in guest mode, certain instructions can be intercepted by hardware. This also holds for nested guests running on emulated virtualization hardware, in particular instructions emulated by kvm itself. This patch adds a framework for intercepting

[PATCH 07/13] KVM: SVM: Add intercept checks for descriptor table accesses

This patch add intercept checks into the KVM instruction emulator to check for the 8 instructions that access the descriptor table addresses. Signed-off-by: Joerg Roedel joerg.roe...@amd.com --- arch/x86/kvm/emulate.c | 13 +++-- arch/x86/kvm/svm.c | 13 + 2 files

[PATCH 09/13] KVM: SVM: Add intercept checks for remaining group7 instructions

This patch implements the emulator intercept checks for the RDTSCP, MONITOR, and MWAIT instructions. Signed-off-by: Joerg Roedel joerg.roe...@amd.com --- arch/x86/kvm/emulate.c | 15 +-- arch/x86/kvm/svm.c |3 +++ 2 files changed, 16 insertions(+), 2 deletions(-) diff

[PATCH 11/13] KVM: SVM: Add intercept checks for one-byte instructions

This patch add intercept checks for emulated one-byte instructions to the KVM instruction emulation path. Signed-off-by: Joerg Roedel joerg.roe...@amd.com --- arch/x86/kvm/emulate.c |4 ++-- arch/x86/kvm/svm.c | 14 ++ 2 files changed, 16 insertions(+), 2 deletions(-) diff

[PATCH 04/13] KVM: X86: Add x86 callback for intercept check

This patch adds a callback into kvm_x86_ops so that svm and vmx code can do intercept checks on emulated instructions. Signed-off-by: Joerg Roedel joerg.roe...@amd.com --- arch/x86/include/asm/kvm_host.h | 21 + arch/x86/kvm/svm.c |9 +

[PATCH 02/13] KVM: x86 emulator: add SVM intercepts

From: Avi Kivity a...@redhat.com Add intercept codes for instructions defined by SVM as interceptable. Signed-off-by: Avi Kivity a...@redhat.com Signed-off-by: Joerg Roedel joerg.roe...@amd.com --- arch/x86/include/asm/kvm_emulate.h | 35 +++

[PATCH 05/13] KVM: SVM: Add intercept check for emulated cr accesses

This patch adds all necessary intercept checks for instructions that access the crX registers. Signed-off-by: Joerg Roedel joerg.roe...@amd.com --- arch/x86/include/asm/kvm_emulate.h |3 + arch/x86/kvm/emulate.c |8 ++- arch/x86/kvm/svm.c | 80

[PATCH 06/13] KVM: SVM: Add intercept check for accessing dr registers

This patch adds the intercept checks for instruction accessing the debug registers. Signed-off-by: Joerg Roedel joerg.roe...@amd.com --- arch/x86/include/asm/kvm_emulate.h |2 ++ arch/x86/kvm/emulate.c |4 ++-- arch/x86/kvm/svm.c |6 ++ 3 files

[PATCH 0/13] KVM: Make the instruction emulator aware of Nested Virtualization v2

Hi, this is version 2 of the patch-set to make the KVM instruction emulator aware of intercepted instructions. Noting the differences to v1 does not make a lot of sense this this is basically a re-implementation so that almost everything changed :-) The re-write was done on the basis of Avi's

[PATCH 12/13] KVM: SVM: Add checks for IO instructions

This patch adds code to check for IOIO intercepts on instructions decoded by the KVM instruction emulator. Signed-off-by: Joerg Roedel joerg.roe...@amd.com --- arch/x86/include/asm/kvm_emulate.h |4 arch/x86/kvm/emulate.c | 10 ++ arch/x86/kvm/svm.c

[PATCH 10/13] KVM: SVM: Add intercept checks for remaining twobyte instructions

This patch adds intercepts checks for the remaining twobyte instructions to the KVM instruction emulator. Signed-off-by: Joerg Roedel joerg.roe...@amd.com --- arch/x86/include/asm/kvm_emulate.h |2 ++ arch/x86/kvm/emulate.c |8 arch/x86/kvm/svm.c |

[PATCH 03/13] KVM: X86: Don't write-back cpu-state on X86EMUL_INTERCEPTED

This patch prevents the changed CPU state to be written back when the emulator detected that the instruction was intercepted by the guest. Signed-off-by: Joerg Roedel joerg.roe...@amd.com --- arch/x86/include/asm/kvm_emulate.h |1 + arch/x86/kvm/emulate.c |3 +++

[PATCH 08/13] KVM: SVM: Add intercept checks for SVM instructions

This patch adds the necessary code changes in the instruction emulator and the extensions to svm.c to implement intercept checks for the svm instructions. Signed-off-by: Joerg Roedel joerg.roe...@amd.com --- arch/x86/kvm/emulate.c | 23 ++- arch/x86/kvm/svm.c |8

[PATCH 13/13] KVM: SVM: Remove nested sel_cr0_write handling code

This patch removes all the old code which handled the nested selective cr0 write intercepts. This code was only in place as a work-around until the instruction emulator is capable of doing the same. This is the case with this patch-set and so the code can be removed. Signed-off-by: Joerg Roedel

2.6.38.1 general protection fault

I got this on a 2.6.38.1 system which (I think) had some problem accessing guest image on a btrfs filesystem. general protection fault: [#1] SMP last sysfs file: /sys/kernel/uevent_seqnum CPU 0 Modules linked in: ipt_MASQUERADE vhost_net kvm_intel kvm iptable_filter xt_tcpudp

Re: [PATCH 2/2] virtio_net: remove send completion interrupts and avoid TX queue overrun through packet drop

On Thu, 24 Mar 2011 10:46:49 -0700, Shirley Ma mashi...@us.ibm.com wrote: On Thu, 2011-03-24 at 16:28 +0200, Michael S. Tsirkin wrote: Several other things I am looking at, wellcome cooperation: 1. It's probably a good idea to update avail index immediately instead of upon kick: for RX

Re: [PATCH 2/2] virtio_net: remove send completion interrupts and avoid TX queue overrun through packet drop

On Thu, 24 Mar 2011 16:28:22 +0200, Michael S. Tsirkin m...@redhat.com wrote: On Thu, Mar 24, 2011 at 11:00:53AM +1030, Rusty Russell wrote: With simply removing the notify here, it does help the case when TX overrun hits too often, for example for 1K message size, the single TCP_STREAM

KVM, iSCSI and High Availability

Hi. Over the last several days I've been reading, asking questions, searching the Internet to find a viable HA stack for Ubuntu with KVM virtualization and shared iSCSI storage. And I'm nearly as confused as when I started. Basically I'm trying to build a KVM enviroment with an iSCSI SAN

Re: KVM internal error. Suberror: 1 with ancient 2.4 kernel as guest

Jiri Avi: I attached the patched I did for movq and movdqa emulation. Please note: (1) I only implemented those two. Other instructions like addq may be following same way. (2) I use same guest_fx_image to hold value and fxsave/fxrstor to copy to/from registers. This is not very efficient I

[GIT PULL] More power management updates for 2.6.39

Hi Linus, Please pull additional power management updates for 2.6.39 from: git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6.git syscore They make subsystems that x86 depends on use struct syscore_ops objects instead of sysdevs for core power management, which reduces the code