similar to: [PATCH] xen/gntdev,gntalloc: Remove unneeded VM flags

Since when we are using the m2p_override it is not true anymore that the mmap''ed area doesn''t have corresponsing struct pages. Removing the VM_PFNMAP flag makes get_user_pages work on the mmap''ed user vma. An example test case would be using a Xen userspace block backend (QDISK) on a file on NFS using O_DIRECT. The patch should be backported back to 2.6.38.

On 32 bit systems a high value of op.count could lead to an integer overflow in the kzalloc() and gref_ids would be smaller than expected. If the you triggered another integer overflow in "if (gref_size + op.count > limit)" then you'd probably get memory corruption inside add_grefs(). Signed-off-by: Dan Carpenter <dan.carpenter at oracle.com> diff --git

On 32 bit systems a high value of op.count could lead to an integer overflow in the kzalloc() and gref_ids would be smaller than expected. If the you triggered another integer overflow in "if (gref_size + op.count > limit)" then you'd probably get memory corruption inside add_grefs(). Signed-off-by: Dan Carpenter <dan.carpenter at oracle.com> diff --git

On 32 bit systems a high value of op.count could lead to an integer overflow in the kzalloc() and gref_ids would be smaller than expected. If the you triggered another integer overflow in "if (gref_size + op.count > limit)" then you'd probably get memory corruption inside add_grefs(). Signed-off-by: Dan Carpenter <dan.carpenter at oracle.com> diff --git

Hi, I am trying to run libvchan on ARM Fast Model for VExpress platform for using inter domain communication. But there are some errors. I am attaching the strace outputs for vchan-node1 run in dom0 and domU. Has anybody faced these issues before. Xl console 1The command is Usage: vchan-node1 [client|server] [write|read] domid nodepath my nodepath is - /local/domain/1/data/vchan-2-1 Regards

Hello, I think this might have been discussed numerous times on this mailing-list, if there is a relevant post I can refer to please point that to me. What I am trying to do is set up a shared memory/event-channels between dom0 and domU''s via socket calls because I cannot use existing front-end/back-end driver mechanism since it relies on devices aka vif, vbd type of device to be created

What is the best kernel to run? is it better to run 3.4.4 or one from xen git? _______________________________________________ Xen-users mailing list Xen-users@lists.xen.org http://lists.xen.org/xen-users

gref->gref_id is unsigned so the error handling didn't work. gnttab_grant_foreign_access() returns an int type, so we can add a cast here, and it doesn't cause any problems. gnttab_grant_foreign_access() can return a variety of errors including -ENOSPC, -ENOSYS and -ENOMEM. Signed-off-by: Dan Carpenter <dan.carpenter at oracle.com> diff --git a/drivers/xen/gntalloc.c

gref->gref_id is unsigned so the error handling didn't work. gnttab_grant_foreign_access() returns an int type, so we can add a cast here, and it doesn't cause any problems. gnttab_grant_foreign_access() can return a variety of errors including -ENOSPC, -ENOSYS and -ENOMEM. Signed-off-by: Dan Carpenter <dan.carpenter at oracle.com> diff --git a/drivers/xen/gntalloc.c

gref->gref_id is unsigned so the error handling didn't work. gnttab_grant_foreign_access() returns an int type, so we can add a cast here, and it doesn't cause any problems. gnttab_grant_foreign_access() can return a variety of errors including -ENOSPC, -ENOSYS and -ENOMEM. Signed-off-by: Dan Carpenter <dan.carpenter at oracle.com> diff --git a/drivers/xen/gntalloc.c

Since we are using the m2p_override we do have struct pages corresponding to the user vma mmap''ed by gntdev. Removing the VM_PFNMAP flag makes get_user_pages work on that vma. An example test case would be using a Xen userspace block backend (QDISK) on a file on NFS using O_DIRECT. The patch should be backported back to 2.6.38. Signed-off-by: Stefano Stabellini

This flag controls the meaning of gnttab_map_grant_ref.host_addr and specifies that the field contains a refernce to the pte entry to be used to perform the mapping. Therefore move the use of this flag to the point at which we actually use a reference to the pte instead of something else, splitting up the usage of the flag in this way is confusing and potentially error prone. The other flags are

Hi, Following is a simple patch that is needed in nouveau to get accelerated X on a Xen dom0 pv_ops kernel. The kernel is jeremy's 2.6.31.6 as of 20100222. The whole gpu tree of nouveau (which is almost the mainline merge), was substituted into the kernel-tree. All components of X (mesa, Xorg-server-7.5, xf86-nouveau, libdrm) used of the same day. Patch: diff -Naur

Hi, Following is a simple patch that is needed in nouveau to get accelerated X on a Xen dom0 pv_ops kernel. The kernel is jeremy's 2.6.31.6 as of 20100222. The whole gpu tree of nouveau (which is almost the mainline merge), was substituted into the kernel-tree. All components of X (mesa, Xorg-server-7.5, xf86-nouveau, libdrm) used of the same day. Patch: diff -Naur

Hi, I have this bug when I activate java-6-jdk on Tomcat 5.5.26 in a Lenny Guest : Jul 31 21:24:15 tomcat01 kernel: 1 multicall(s) failed: cpu 3 Jul 31 21:24:15 tomcat01 kernel: call 1/1: op=14 arg=[b7f1a000] result=-22 Jul 31 21:24:15 tomcat01 kernel: ------------[ cut here ]------------ Jul 31 21:24:15 tomcat01 kernel: kernel BUG at arch/x86/xen/multicalls.c:103! Jul 31 21:24:15 tomcat01

vm_normal_page() @ linux-2.6-xen-sparse/mm/memory.c ... if (!vma->vm_flags & VM_RESERVED) print_bad_pte(vma, pte, addr); note:VM_RESERVED=0x00080000 This if clause is always false. Should it be "if (!(vma->vm_flags & VM_RESERVED))" ? -- yamahata _______________________________________________ Xen-devel mailing list

Package: xen-utils-common Version: 4.1.3-6 Severity: minor Dear Maintainer, I am trying to run the following command on a dom0 Debian server in order to mount a vmware vmdk. I don't want to use kpartx or losetup as they have poor write performance and I'm hoping blktap will provide better performance. xm block-attach 0 tap:vmdk:/mnt/backup/3MSYDDP01/3MSYDDP01_2-flat.vmdk /dev/xvda1 w 0

Hello Community, I encountered an error while running "xm console domU". Here is the running script: # xm console domU xenconsole: Could not read tty from store: No such file or directory I googled and found out that this issue is mostly result from forgetting starting xenconsole service. However, after I started xenconsole, the issue is still there. Please see: #

Hi,  I''m currently stuck with creating VM which cannot boot with disk using blktap2 driver. I''ve been searching nearly a whole week and I couldn''t get a answer. When creating vm with blktap2, it keep shows a error:   libxl: debug: libxl_device.c:200:disk_try_backend: Disk vdev=xvda, backend tap unsuitable because blktap not available.  VM configuration (XML):

Hi, I build Xen 4.1.1 on a Gentoo base dom0. Everything is working great. I tried one of Joseph Glanville''s PV-HVM image (debian6) and its working as it should. Now l''im trying to build a Gentoo based domU with then same specs as Joseph''s PV-HVM. I used a copy of the .cfg and adapted to my needs to make the gentoo work. when booting the minimal install image using