search for: patchv3

Here's a patch series to fix known regressions in virtio_pci, by refactoring code along the lines suggested by Rusty. This is on top of patch virtio: fix memory leak on device removal that has been applied by Rusty. This supercedes patches: [PATCHv3] virtio: recover from vector assignment failure [PATCHv2] virtio: fix double free_irq on device removal Michael S. Tsirkin (2): virtio: delete vq from list virtio: refactor find_vqs drivers/virtio/virtio_pci.c | 218 ++++++++++++++++++++++++------------------- 1 files changed, 124 insertio...

Here's a patch series to fix known regressions in virtio_pci, by refactoring code along the lines suggested by Rusty. This is on top of patch virtio: fix memory leak on device removal that has been applied by Rusty. This supercedes patches: [PATCHv3] virtio: recover from vector assignment failure [PATCHv2] virtio: fix double free_irq on device removal Michael S. Tsirkin (2): virtio: delete vq from list virtio: refactor find_vqs drivers/virtio/virtio_pci.c | 218 ++++++++++++++++++++++++------------------- 1 files changed, 124 insertio...

Adds support for assigning a label to domains, obtaining and setting the current enforcing mode, and loading a policy with xl command and libxl header when the Flask XSM is in use. Adheres to the changes made by the patch to remove exposure of libxenctrl/libxenstore headers via libxl.h. tools/libxl/libxl_flask.c | 71 ++++++++++++++++++ tools/libxl/Makefile | 2

Tried to make it in accordance with your comments. Difference to v1: Added reply_with_error where necessary. Changed name get_min_size -> vfs_min_size. Difference to v2: Changed name to vfs_minimum_size. Changed parsing to xstrtol + STR* macros where possible. Maxim Perevedentsev (2): New API: vfs_min_size Include resize2fs_P into vfs_min_size. daemon/Makefile.am | 1 +

Here's an updated draft of virtio patches which work with the qemu-kvm code that I just posted. This still needs to be rebased on top of Rusty's recent virtqueue list patch. I am posting it in case people want to start trying MSI-X out. Michael S. Tsirkin (3): virtio: find_vqs/del_vqs virtio operations virtio_pci: split up vp_interrupt virtio_pci: optional MSI-X support

Here is the port of MSI-X support patches to upstream qemu. Please comment or commit. This patchset adds generic support for MSI-X, adds implementation in APIC, and uses MSI-X in virtio-net. At Paul's suggestion, I use stl_phy to decouple APIC and MSI-X implementation. This uses the mask table patch that I posted previously, and which is now included in the series. -- MST Changelog: v3:

This implements vhost: a kernel-level backend for virtio, The main motivation for this work is to reduce virtualization overhead for virtio by removing system calls on data path, without guest changes. For virtio-net, this removes up to 4 system calls per packet: vm exit for kick, reentry for kick, iothread wakeup for packet, interrupt injection for packet. Some more detailed description attached

This adds support for vhost-net virtio kernel backend. This is RFC, but works without issues for me. Still needs to be split up, tested and benchmarked properly, but posting it here in case people want to test drive the kernel bits I posted. Changes since v2: - minor fixes - added patch to build on RHEL5.3 Changes since v1: - rebased on top of 9dc275d9d660fe1cd64d36102d600885f9fdb88a Michael

When mm switched to matches that of active mm, we don't need to increment and then drop the mm count. In a simple benchmark this happens in about 50% of time. Making that conditional reduces contention on that cache line on SMP systems. Acked-by: Andrea Arcangeli <aarcange at redhat.com> Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- mm/mmu_context.c | 9 ++++++---

Here's an updated draft of virtio patches which work with the qemu-kvm code that I just posted. This still needs to be rebased on top of Rusty's recent virtqueue list patch. I am posting it in case people want to start trying MSI-X out. Michael S. Tsirkin (3): virtio: find_vqs/del_vqs virtio operations virtio_pci: split up vp_interrupt virtio_pci: optional MSI-X support

Here is the port of MSI-X support patches to upstream qemu. Please comment or commit. This patchset adds generic support for MSI-X, adds implementation in APIC, and uses MSI-X in virtio-net. At Paul's suggestion, I use stl_phy to decouple APIC and MSI-X implementation. This uses the mask table patch that I posted previously, and which is now included in the series. -- MST Changelog: v3:

This implements vhost: a kernel-level backend for virtio, The main motivation for this work is to reduce virtualization overhead for virtio by removing system calls on data path, without guest changes. For virtio-net, this removes up to 4 system calls per packet: vm exit for kick, reentry for kick, iothread wakeup for packet, interrupt injection for packet. Some more detailed description attached

This adds support for vhost-net virtio kernel backend. This is RFC, but works without issues for me. Still needs to be split up, tested and benchmarked properly, but posting it here in case people want to test drive the kernel bits I posted. Changes since v2: - minor fixes - added patch to build on RHEL5.3 Changes since v1: - rebased on top of 9dc275d9d660fe1cd64d36102d600885f9fdb88a Michael

When mm switched to matches that of active mm, we don't need to increment and then drop the mm count. In a simple benchmark this happens in about 50% of time. Making that conditional reduces contention on that cache line on SMP systems. Acked-by: Andrea Arcangeli <aarcange at redhat.com> Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- mm/mmu_context.c | 9 ++++++---

On Wed, 2012-01-25 at 14:35 +0000, Dario Faggioli wrote: > Allow for "^<cpuid>" syntax while specifying the pCPUs list > during a vcpu-pin. This enables doing the following: > > xl vcpu-pin 1 1 0-4,^2 > > and achieving: > > xl vcpu-list > Name ID VCPU CPU State Time(s) CPU Affinity > ... > Squeeze_pv

vhost_net_ubuf_put_and_wait has a confusing name: it will actually also free it's argument. Thus since commit 1280c27f8e29acf4af2da914e80ec27c3dbd5c01 "vhost-net: flush outstanding DMAs on memory change" vhost_net_flush tries to use the argument after passing it to vhost_net_ubuf_put_and_wait, this results in use after free. To fix, don't free the argument in

vhost_net_ubuf_put_and_wait has a confusing name: it will actually also free it's argument. Thus since commit 1280c27f8e29acf4af2da914e80ec27c3dbd5c01 "vhost-net: flush outstanding DMAs on memory change" vhost_net_flush tries to use the argument after passing it to vhost_net_ubuf_put_and_wait, this results in use after free. To fix, don't free the argument in

Hi Timothy and Viswanath, > FYI, I got Phil @ ARM to independently verify for any compile/link > warning/errors and he said he did not find any... And since I haven't > heard from you for a week, I went ahead and pushed RFCv3. Yes, I do get it built without compile/link warning/errors. To save some time, please turn off other modules in Ne10 Open $NE10_DIR/CMakeLists.txt and find

From: David Vrabel <david.vrabel@citrix.com> In 32 bit guests, if a userspace process has %eax == -ERESTARTSYS (-512) or -ERESTARTNOINTR (-513) when it is interrupted by an event /and/ the process has a pending signal then %eip (and %eax) are corrupted when returning to the main process after handling the signal. The application may then crash with SIGSEGV or a SIGILL or it may have subtly

Implement MSI support in APIC. Note that MSI and MMIO APIC registers are at the same memory location, but actually not on the global bus: MSI is on PCI bus, APIC is connected directly to the CPU. We map them on the global bus at the same address which happens to work because MSI registers are reserved in APIC MMIO and vice versa. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> ---