similar to: Bug#636594: xen: VM restarting too fast. Refusing to restart to avoid loops.

Hi, When running domUs with pygrub, I get errors: .... xen be core: xen be core: can''t open gnttab device can''t open gnttab device xen be core: xen be core: can''t open gnttab device can''t open gnttab device xen be core: xen be core: can''t open gnttab device ..... domUs start, but these errors continue on dom0 Configuration: dom0: Ubuntu 8.10

Add a semaphore to protect gnttab_list from exhaustion, and disable callbacks during allocation/free. Fix the network frontend accordingly. Signed-off-by: Samuel Thibault <samuel.thibault@citrix.com> diff -r bb961bda7eff extras/mini-os/gnttab.c --- a/extras/mini-os/gnttab.c Sun Nov 25 21:24:48 2007 +0000 +++ b/extras/mini-os/gnttab.c Mon Nov 26 11:50:31 2007 +0000 @@ -18,6 +18,7 @@

Hello, sorry to bother you with this: while trying to compile mini-os from xen-unstable.hg, I noticed that compilation failed like this: gcc -fno-builtin -Wall -Werror -Wredundant-decls -Wno-format -Wstrict-prototypes -Wnested-externs -Wpointer-arith -Winline -m32 -march=i686 -g -Iinclude -Iinclude/x86 -Iinclude/x86/x86_32 -c gnttab.c -o gnttab.o gnttab.c: In Funktion »init_gnttab«:

Package: xen-utils-common Version: 4.1.2-1 Severity: normal Hi, I was doing some experiments today with XL TOOLSTACK, and found few problems when trying to do PV domU boot. I was trying to run kfreebsd9 or linux-3.2 kernel in qemu using PV i386, and with simple configuration without any disks, nics or virtual framebuffer, kernel boots (and then kernel itselfs correctly fails with information

This patch is cleaned up of the patch which was sent as http://lists.xensource.com/archives/html/xen-devel/2007-06/msg00324.html # HG changeset patch # User yamahata@valinux.co.jp # Date 1181545986 -32400 # Node ID 69e2dd4e06c405a92717c5f1818f5096e1dc0bcd # Parent d5e0eb7dd069c0ffc1854da81aa143ccfb0ad66e make dma address conversion logic of gnttab dma arch specific. gnttab_dma_map_page() and

Also remove unused xenbus_{,un}map_ring(), adjust types, and clean up header inclusion. Signed-off-by: Jan Beulich <jbeulich@novell.com> --- a/drivers/xen/blkback/blkback.c +++ b/drivers/xen/blkback/blkback.c @@ -41,6 +41,8 @@ #include <linux/list.h> #include <linux/delay.h> #include <xen/balloon.h> +#include <xen/evtchn.h> +#include <xen/gnttab.h>

Signed-off-by: Jan Beulich <jbeulich@suse.com> --- a/drivers/xen/core/gnttab.c +++ b/drivers/xen/core/gnttab.c @@ -35,6 +35,7 @@ #include <linux/sched.h> #include <linux/mm.h> #include <linux/seqlock.h> +#include <linux/timer.h> #include <xen/interface/xen.h> #include <xen/gnttab.h> #include <asm/pgtable.h> @@ -183,35 +184,119 @@ int

I have two dell servers running arch linux and xen 4.3 One of them had after installing lates xen 4.3 had been showing this error message" failed to add gnttab to physmap " I reverted back to git pull from 02/17/13 and virtual machines start fine. Can sommone point me in righ direction what could be causing the error message _______________________________________________ Xen-users

Legacy (non-pvops) gntdev drivers may require this operation to be performed when the number of grants intended to be used simultaneously exceeds a certain driver specific default limit, and qemu''s qdisk driver is an example of needing to do so. Signed-off-by: Jan Beulich <jbeulich@suse.com> --- a/tools/libxc/xc_linux_osdep.c +++ b/tools/libxc/xc_linux_osdep.c @@ -541,6 +541,27 @@

Rather than just leaking pages that can''t be freed at the point where access permission for the backend domain gets revoked, put them on a list and run a timer to (infrequently) retry freeing them. (This can particularly happen when unloading a frontend driver when devices are still present, and the backend still has them in non-closed state or hasn''t finished closing them yet.)

hi all, I noticed "CONFIG_XEN" appears many times in Xen source code. I''m confused about the meaning of "CONFIG_XEN". For example, in "gnttab.c", the definations of gnttab_map() and gnttab_resume() vary with "ifdef CONFIG_XEN" or not. And I also noticed ifndef CONFIG_XEN , the file <platform-pci.h> is included. So my questions

Hello, Hans van Kranenburg, le sam. 09 févr. 2019 17:01:55 +0100, a ecrit: > > I have forwarded the original mail: all VM I/O get stuck, and thus the > > VM becomes unusable. > > These are in many cases the symptoms of running out of "grant frames". Oh! That could be it indeed. I'm wondering what could be monopolizing them, though, and why +deb9u11 is affected

On 2/11/19 2:37 AM, Dongli Zhang wrote: > > On 2/10/19 12:35 AM, Samuel Thibault wrote: >> >> Hans van Kranenburg, le sam. 09 févr. 2019 17:01:55 +0100, a ecrit: >>>> I have forwarded the original mail: all VM I/O get stuck, and thus the >>>> VM becomes unusable. >>> >>> These are in many cases the symptoms of running out of "grant

2 questions on the code of mini-os (the one in XEN 3.0.3): 1. In xen-3.0.3/extras/mini-os/mm.c:52 is a declaration of stack extern char *stack; but in file xen-3.0.3/extras/mini-os/arch/x86/setup.c:48, there is also a decl of stack: char stack[8192]; If one dereferences the variable stack, which is apparently not the case yet, it gives surely a segfault! 2. In file

On 02/12/2019 06:10 AM, Samuel Thibault wrote: > Hans van Kranenburg, le lun. 11 févr. 2019 22:59:11 +0100, a ecrit: >> On 2/11/19 2:37 AM, Dongli Zhang wrote: >>> >>> On 2/10/19 12:35 AM, Samuel Thibault wrote: >>>> >>>> Hans van Kranenburg, le sam. 09 févr. 2019 17:01:55 +0100, a ecrit: >>>>>> I have forwarded the original

Hi Keir: [PV-on-HVM]: Add missing includes This patch adds missing includes that currently work through indirect inclusions. This cannot be relied on and indeed does break on older kernels (2.4 for PV-on-HVM). Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> diff -r 7953164cebb6 unmodified_drivers/linux-2.6/platform-pci/machine_reboot.c ---

When destroying pcifront/pciback, the following message appears in the guest linux kernel log. WARNING: g.e. still in use! WARNING: leaking g.e. and page still in use! This is caused by the wrong disconnect procedure that pcifront terminates the gnttab foreign access before pciback unmaps the ring. This patch corrects the handling of pcifront/pciback destruction sequence. Firstly pcifront

Signed-off-by: Jan Beulich <jbeulich@novell.com> Index: head-2007-05-31/drivers/xen/Kconfig =================================================================== --- head-2007-05-31.orig/drivers/xen/Kconfig 2007-06-06 17:04:59.000000000 +0200 +++ head-2007-05-31/drivers/xen/Kconfig 2007-06-04 13:48:38.000000000 +0200 @@ -216,6 +216,7 @@ config XEN_DISABLE_SERIAL config XEN_SYSFS tristate

Mapping stable-security to proposed-updates. Accepted: -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Format: 1.8 Date: Wed, 10 Jun 2015 18:16:26 +0000 Source: xen Binary: libxen-4.4 libxenstore3.0 libxen-dev xenstore-utils xen-utils-common xen-utils-4.4 xen-hypervisor-4.4-amd64 xen-system-amd64 xen-hypervisor-4.4-arm64 xen-system-arm64 xen-hypervisor-4.4-armhf xen-system-armhf Architecture:

Accepted: -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Format: 1.8 Date: Wed, 10 Jun 2015 18:16:26 +0000 Source: xen Binary: libxen-4.4 libxenstore3.0 libxen-dev xenstore-utils xen-utils-common xen-utils-4.4 xen-hypervisor-4.4-amd64 xen-system-amd64 xen-hypervisor-4.4-arm64 xen-system-arm64 xen-hypervisor-4.4-armhf xen-system-armhf Architecture: source all amd64 Version: 4.4.1-9+deb8u1