Linux kernel source tree https://git.amat.us/linux/atom/include/xen/interface?h=v3.3 2012-01-15T20:48:41Z 2012-01-15T20:48:41Z Linus Torvalds torvalds@linux-foundation.org 2012-01-15T20:48:41Z urn:sha1:16008d641670571ff4cd750b416c7caf2d89f467 * 'for-3.3/drivers' of git://git.kernel.dk/linux-block: mtip32xx: do rebuild monitoring asynchronously xen-blkfront: Use kcalloc instead of kzalloc to allocate array mtip32xx: uninitialized variable in mtip_quiesce_io() mtip32xx: updates based on feedback xen-blkback: convert hole punching to discard request on loop devices xen/blkback: Move processing of BLKIF_OP_DISCARD from dispatch_rw_block_io xen/blk[front|back]: Enhance discard support with secure erasing support. xen/blk[front|back]: Squash blkif_request_rw and blkif_request_discard together mtip32xx: update to new ->make_request() API mtip32xx: add module.h include to avoid conflict with moduleh tree mtip32xx: mark a few more items static mtip32xx: ensure that all local functions are static mtip32xx: cleanup compat ioctl handling mtip32xx: fix warnings/errors on 32-bit compiles block: Add driver for Micron RealSSD pcie flash cards 2012-01-10T18:09:59Z Linus Torvalds torvalds@linux-foundation.org 2012-01-10T18:09:59Z urn:sha1:90160371b3a3e67ef78d68210a94dd30664a703d * 'stable/for-linus-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: (37 commits) xen/pciback: Expand the warning message to include domain id. xen/pciback: Fix "device has been assigned to X domain!" warning xen/pciback: Move the PCI_DEV_FLAGS_ASSIGNED ops to the "[un|]bind" xen/xenbus: don't reimplement kvasprintf via a fixed size buffer xenbus: maximum buffer size is XENSTORE_PAYLOAD_MAX xen/xenbus: Reject replies with payload > XENSTORE_PAYLOAD_MAX. Xen: consolidate and simplify struct xenbus_driver instantiation xen-gntalloc: introduce missing kfree xen/xenbus: Fix compile error - missing header for xen_initial_domain() xen/netback: Enable netback on HVM guests xen/grant-table: Support mappings required by blkback xenbus: Use grant-table wrapper functions xenbus: Support HVM backends xen/xenbus-frontend: Fix compile error with randconfig xen/xenbus-frontend: Make error message more clear xen/privcmd: Remove unused support for arch specific privcmp mmap xen: Add xenbus_backend device xen: Add xenbus device driver xen: Add privcmd device driver xen/gntalloc: fix reference counts on multi-page mappings ... 2012-01-04T22:02:03Z Ian Campbell Ian.Campbell@citrix.com 2012-01-04T09:34:49Z urn:sha1:9e7860cee18241633eddb36a4c34c7b61d8cecbc Haogang Chen found out that: There is a potential integer overflow in process_msg() that could result in cross-domain attack. body = kmalloc(msg->hdr.len + 1, GFP_NOIO | __GFP_HIGH); When a malicious guest passes 0xffffffff in msg->hdr.len, the subsequent call to xb_read() would write to a zero-length buffer. The other end of this connection is always the xenstore backend daemon so there is no guest (malicious or otherwise) which can do this. The xenstore daemon is a trusted component in the system. However this seem like a reasonable robustness improvement so we should have it. And Ian when read the API docs found that: The payload length (len field of the header) is limited to 4096 (XENSTORE_PAYLOAD_MAX) in both directions. If a client exceeds the limit, its xenstored connection will be immediately killed by xenstored, which is usually catastrophic from the client's point of view. Clients (particularly domains, which cannot just reconnect) should avoid this. so this patch checks against that instead. This also avoids a potential integer overflow pointed out by Haogang Chen. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Cc: Haogang Chen <haogangchen@gmail.com> CC: stable@kernel.org Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> 2011-12-19T14:30:35Z Konrad Rzeszutek Wilk konrad.wilk@oracle.com 2011-12-19T14:30:35Z urn:sha1:12275dd4b747f5d87fa36229774d76bca8e63068 This reverts commit ddacf5ef684a655abe2bb50c4b2a5b72ae0d5e05. As when booting the kernel under Amazon EC2 as an HVM guest it ends up hanging during startup. Reverting this we loose the fix for kexec booting to the crash kernels. Fixes Canonical BZ #901305 (http://bugs.launchpad.net/bugs/901305) Tested-by: Alessandro Salvatori <sandr8@gmail.com> Reported-by: Stefan Bader <stefan.bader@canonical.com> Acked-by: Ian Campbell <Ian.Campbell@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> 2011-11-22T14:23:44Z Annie Li annie.li@oracle.com 2011-11-22T01:58:06Z urn:sha1:0f9f5a9588468cddeccc9146b86798492c7cd4f5 This patch introduces new structures of grant table V2, grant table V2 is an extension from V1. Grant table is shared between guest and Xen, and Xen is responsible to do corresponding work for grant operations, such as: figure out guest's grant table version, perform different actions based on different grant table version, etc. Although full-page structure of V2 is different from V1, it play the same role as V1. Acked-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Annie Li <annie.li@oracle.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> 2011-11-18T18:28:01Z Konrad Rzeszutek Wilk konrad.wilk@oracle.com 2011-10-12T20:23:30Z urn:sha1:5ea42986694a96542644f9cae8b122d3a00c508f Part of the blkdev_issue_discard(xx) operation is that it can also issue a secure discard operation that will permanantly remove the sectors in question. We advertise that we can support that via the 'discard-secure' attribute and on the request, if the 'secure' bit is set, we will attempt to pass in REQ_DISCARD | REQ_SECURE. CC: Li Dongyang <lidongyang@novell.com> [v1: Used 'flag' instead of 'secure:1' bit] [v2: Use 'reserved' uint8_t instead of adding a new value] [v3: Check for nseg when mapping instead of operation] Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> 2011-11-18T18:27:59Z Konrad Rzeszutek Wilk konrad.wilk@oracle.com 2011-10-12T16:12:36Z urn:sha1:97e36834f5a106459ab1b290e663a4eb6264639e In a union type structure to deal with the overlapping attributes in a easier manner. Suggested-by: Ian Campbell <Ian.Campbell@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> 2011-11-07T04:15:05Z Linus Torvalds torvalds@linux-foundation.org 2011-11-07T04:15:05Z urn:sha1:403299a8515c56db58454c57712f4dc96d6c1fde * 'upstream/xen-settime' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen: xen/dom0: set wallclock time in Xen xen: add dom0_op hypercall xen/acpi: Domain0 acpi parser related platform hypercall 2011-11-05T00:22:14Z Linus Torvalds torvalds@linux-foundation.org 2011-11-05T00:22:14Z urn:sha1:3d0a8d10cfb4cc3d1877c29a866ee7d8a46aa2fa * 'for-3.2/drivers' of git://git.kernel.dk/linux-block: (30 commits) virtio-blk: use ida to allocate disk index hpsa: add small delay when using PCI Power Management to reset for kump cciss: add small delay when using PCI Power Management to reset for kump xen/blkback: Fix two races in the handling of barrier requests. xen/blkback: Check for proper operation. xen/blkback: Fix the inhibition to map pages when discarding sector ranges. xen/blkback: Report VBD_WSECT (wr_sect) properly. xen/blkback: Support 'feature-barrier' aka old-style BARRIER requests. xen-blkfront: plug device number leak in xlblk_init() error path xen-blkfront: If no barrier or flush is supported, use invalid operation. xen-blkback: use kzalloc() in favor of kmalloc()+memset() xen-blkback: fixed indentation and comments xen-blkfront: fix a deadlock while handling discard response xen-blkfront: Handle discard requests. xen-blkback: Implement discard requests ('feature-discard') xen-blkfront: add BLKIF_OP_DISCARD and discard request struct drivers/block/loop.c: remove unnecessary bdev argument from loop_clr_fd() drivers/block/loop.c: emit uevent on auto release drivers/block/cpqarray.c: use pci_dev->revision loop: always allow userspace partitions and optionally support automatic scanning ... Fic up trivial header file includsion conflict in drivers/block/loop.c 2011-10-25T07:19:36Z Linus Torvalds torvalds@linux-foundation.org 2011-10-25T07:19:36Z urn:sha1:04a8752485e450124f92c9b931d268b48d75650a * 'stable/drivers-3.2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xenbus: don't rely on xen_initial_domain to detect local xenstore xenbus: Fix loopback event channel assuming domain 0 xen/pv-on-hvm:kexec: Fix implicit declaration of function 'xen_hvm_domain' xen/pv-on-hvm kexec: add xs_reset_watches to shutdown watches from old kernel xen/pv-on-hvm kexec: update xs_wire.h:xsd_sockmsg_type from xen-unstable xen/pv-on-hvm kexec+kdump: reset PV devices in kexec or crash kernel xen/pv-on-hvm kexec: rebind virqs to existing eventchannel ports xen/pv-on-hvm kexec: prevent crash in xenwatch_thread() when stale watch events arrive * 'stable/drivers.bugfixes-3.2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xen/pciback: Check if the device is found instead of blindly assuming so. xen/pciback: Do not dereference psdev during printk when it is NULL. xen: remove XEN_PLATFORM_PCI config option xen: XEN_PVHVM depends on PCI xen/pciback: double lock typo xen/pciback: use mutex rather than spinlock in vpci backend xen/pciback: Use mutexes when working with Xenbus state transitions. xen/pciback: miscellaneous adjustments xen/pciback: use mutex rather than spinlock in passthrough backend xen/pciback: use resource_size() * 'stable/pci.fixes-3.2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xen/pci: support multi-segment systems xen-swiotlb: When doing coherent alloc/dealloc check before swizzling the MFNs. xen/pci: make bus notifier handler return sane values xen-swiotlb: fix printk and panic args xen-swiotlb: Fix wrong panic. xen-swiotlb: Retry up three times to allocate Xen-SWIOTLB xen-pcifront: Update warning comment to use 'e820_host' option.