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tree: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git linux-next head: b072ae74df177c3ad7704c5fbe66e3f10aad9d4e commit: b072ae74df177c3ad7704c5fbe66e3f10aad9d4e [12/12] vhost: use vhost_desc instead of vhost_log reproduce: # apt-get install sparse # sparse version: v0.6.1-101-g82dee2e-dirty git checkout b072ae74df177c3ad7...

Hi: This series tries to fix various issues of vhost: - Patch 1 adds a missing write barrier between used idx updating and logging. - Patch 2-3 brings back the protection of device IOTLB through vq mutex, this fixes possible use after free in device IOTLB entries. - Patch 4 fixes the diry page logging when device IOTLB is enabled. We should do...

Hi: This series tries to fix various issues of vhost: - Patch 1 adds a missing write barrier between used idx updating and logging. - Patch 2-3 brings back the protection of device IOTLB through vq mutex, this fixes possible use after free in device IOTLB entries. - Patch 4 fixes the diry page logging when device IOTLB is enabled. We should do...

In commit ea5d404655ba ("vhost: fix release path lockdep checks"), Michael added a flag to check whether we should hold a lock in vhost_dev_cleanup(), however, in commit 47283bef7ed3 ("vhost: move memory pointer to VQs"), RCU operations have been replaced by mutex, we can remove the no-longer-used `locked' par...

The vq->is_le field is used to fix endianness when accessing the vring via the cpu_to_vhost16() and vhost16_to_cpu() helpers in the following cases: 1) host is big endian and device is modern virtio 2) host has cross-endian support and device is legacy virtio with a different endianness than the host Both cases rely on the VHOST_SET_FEATURES ioctl, but 2) also needs the VHOST_SET_VR...

The vq->is_le field is used to fix endianness when accessing the vring via the cpu_to_vhost16() and vhost16_to_cpu() helpers in the following cases: 1) host is big endian and device is modern virtio 2) host has cross-endian support and device is legacy virtio with a different endianness than the host Both cases rely on the VHOST_SET_FEATURES ioctl, but 2) also needs the VHOST_SET_VR...

Hi all: This series try to fix several issues introduced by meta data accelreation series. Please review. Jason Wang (6): vhost: don't set uaddr for invalid address vhost: validate MMU notifier registration vhost: fix vhost map leak vhost: reset invalidate_count in vhost_set_vring_num_addr() vhost: mark dirty pages during map uninit vhost: don't do synchronize_rcu() in vhost_uninit_vq_maps() drivers/vhos...

The vq->is_le field is used to fix endianness when accessing the vring via the cpu_to_vhost16() and vhost16_to_cpu() helpers in the following cases: 1) host is big endian and device is modern virtio 2) host has cross-endian support and device is legacy virtio with a different endianness than the host Both cases rely on the VHOST_SET_FEATURES ioctl, but 2) also needs the VHOST_SET_VR...

The vq->is_le field is used to fix endianness when accessing the vring via the cpu_to_vhost16() and vhost16_to_cpu() helpers in the following cases: 1) host is big endian and device is modern virtio 2) host has cross-endian support and device is legacy virtio with a different endianness than the host Both cases rely on the VHOST_SET_FEATURES ioctl, but 2) also needs the VHOST_SET_VR...

On Thu, Apr 02, 2015 at 03:17:13PM +0200, Greg Kurz wrote: > This patch brings cross-endian support to vhost when used to implement > legacy virtio devices. Since it is a relatively rare situation, the feature > availability is controlled by a kernel config option (not set by default). > > If cross-endian support is compiled in, vhost abvertises a new feature > to be negotiated with usersp...

On Thu, Apr 02, 2015 at 03:17:13PM +0200, Greg Kurz wrote: > This patch brings cross-endian support to vhost when used to implement > legacy virtio devices. Since it is a relatively rare situation, the feature > availability is controlled by a kernel config option (not set by default). > > If cross-endian support is compiled in, vhost abvertises a new feature > to be negotiated with usersp...

Hi Jason, I love your patch! Perhaps something to improve: [auto build test WARNING on net/master] url: https://github.com/0day-ci/linux/commits/Jason-Wang/Fix-various-issue-of-vhost/20181210-223236 config: i386-randconfig-x072-201849 (attached as .config) compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 reproduce: # save the attached .config to linux build tree make ARCH=i386 All warnings (new ones prefixed by >>): drivers//vhost/vhost.c: In function 'log...

...his series try to fix several issues introduced by meta data accelreation series. Please review. Changes from V4: - switch to use spinlock synchronize MMU notifier with accessors Changes from V3: - remove the unnecessary patch Changes from V2: - use seqlck helper to synchronize MMU notifier with vhost worker Changes from V1: - try not use RCU to syncrhonize MMU notifier with vhost worker - set dirty pages after no readers - return -EAGAIN only when we find the range is overlapped with metadata Jason Wang (9): vhost: don't set uaddr for invalid address vhost: validate MMU notifier reg...

...his series try to fix several issues introduced by meta data accelreation series. Please review. Changes from V4: - switch to use spinlock synchronize MMU notifier with accessors Changes from V3: - remove the unnecessary patch Changes from V2: - use seqlck helper to synchronize MMU notifier with vhost worker Changes from V1: - try not use RCU to syncrhonize MMU notifier with vhost worker - set dirty pages after no readers - return -EAGAIN only when we find the range is overlapped with metadata Jason Wang (9): vhost: don't set uaddr for invalid address vhost: validate MMU notifier reg...

On 14.02.20 13:26, Eugenio P?rez wrote: > On Fri, 2020-02-14 at 13:22 +0100, Christian Borntraeger wrote: >> >> On 14.02.20 13:17, Eugenio P?rez wrote: >>> Can you try the inlined patch over 52c36ce7f334 ("vhost: use batched version by default")? My intention is to check >>> if >>> "strange VHOST_SET_VRING_BASE" line appears. In previous tests, it appears very fast, but maybe it takes some time >>> for >>> it to appear, or it does not appear anymore. yep...

Hi all: This series try to fix several issues introduced by meta data accelreation series. Please review. Changes from V2: - use seqlck helper to synchronize MMU notifier with vhost worker Changes from V1: - try not use RCU to syncrhonize MMU notifier with vhost worker - set dirty pages after no readers - return -EAGAIN only when we find the range is overlapped with metadata Jason Wang (9): vhost: don't set uaddr for invalid address vhost: validate MMU notifier re...

...ease merge the following tree for 2.6.38. Thanks! The following changes since commit ad1184c6cf067a13e8cb2a4e7ccc407f947027d0: net: au1000_eth: remove unused global variable. (2010-12-11 12:01:48 -0800) are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git vhost-net-next Jason Wang (1): vhost: fix typos in comment Julia Lawall (1): drivers/vhost/vhost.c: delete double assignment Michael S. Tsirkin (9): vhost: put mm after thread stop vhost-net: batch use/unuse mm vhost: copy_to_user -> __copy_to_user vhos...

...ease merge the following tree for 2.6.38. Thanks! The following changes since commit ad1184c6cf067a13e8cb2a4e7ccc407f947027d0: net: au1000_eth: remove unused global variable. (2010-12-11 12:01:48 -0800) are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git vhost-net-next Jason Wang (1): vhost: fix typos in comment Julia Lawall (1): drivers/vhost/vhost.c: delete double assignment Michael S. Tsirkin (9): vhost: put mm after thread stop vhost-net: batch use/unuse mm vhost: copy_to_user -> __copy_to_user vhos...

This series is a new tentative to have cleaner cross-endian code. Patches 1/3 is new: it fixes a side-effect in case vhost_init_used() fails. Patch 2/3 comes from v1: it renames cross-endian helpers Patch 3/3 is new: it simply renames vhost_init_used() as suggested by Michael. --- Greg Kurz (3): vhost: fix error path in vhost_init_used() vhost: rename cross-endian helpers vhost: rename vhost_init_...

This series is a new tentative to have cleaner cross-endian code. Patches 1/3 is new: it fixes a side-effect in case vhost_init_used() fails. Patch 2/3 comes from v1: it renames cross-endian helpers Patch 3/3 is new: it simply renames vhost_init_used() as suggested by Michael. --- Greg Kurz (3): vhost: fix error path in vhost_init_used() vhost: rename cross-endian helpers vhost: rename vhost_init_...