search for: ring0

http://www.kerneltraffic.org/kernel-traffic/kt20031201_243.html --- Relevant section --- Nuno Silva mentioned: The good people at Cambridge made a (very nice) VMM that exploits ring0/1/3 to let one machine run various kernels independently (the kernels need to be ported to the xen arch). Xen itself executes in ring0 and the "guest" operating systems execute in ring1. User code runs in ring3, as usual. They have linux running under xen ;) The project'...

I am not clear with the working of hypervisor xen. How does an instruction executed by kernel in Ring0 of DomU gets mapped or executed by hypervisor and then is excuted in Dom0. Is this thing some where on the wiki page? -- Tapas _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users

I am not clear with the working of hypervisor xen. How does an instruction executed by kernel in Ring0 of DomU gets mapped or executed by hypervisor and then is excuted in Dom0. Is this thing some where on the wiki page? -- Tapas _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users

Hello, all. I want to run VMWare on my dom0, for those special occasions when I need to boot unmodified OSes. I found some messages from 2005 on this list that explained that it''s not possible to run VMWare on a xen host. (Example message pasted below..) Well, it''s 2007 now.. Is it possible yet? Before you ask, no, I don''t have hardware support for virtualization.

I would like to have VMware modules running in the XEN kernel, NOT in DOM0 kernel but outside at the hypervisor level, is that possible? Architecturally, I noticed that xen subbranch does not implement any modules loading. If I were to load the VMware modules directly as an ELF image, will it break any existing architectural feature in XEN? Thanks :-).

Hi, For each domUs there is unique shared memory(2-way circular queue) and event-channel(one shared memory and event-channel per domU) or there is only one shared memory and interdomain event-channel(for every DomU)? regards: Amit _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel

Hey everyone, as my previous emails apparently got stuck in a spam filter I'll try this again. The patches attached here allow for more than one recipient delimiter in the address. Which is allowed in postfix since version 2.11. E.g. lhw+postfix at ring0.de would be equal to lhw-postfix at ring0.de if configured that way. Same as postfix only the first discovered delimiter is taken into account and the priority is first to last in the list. Lennart -------------- next part -------------- A non-text attachment was scrubbed... Name: dovecot.patch Ty...

...easy to generate double nasty conflicts when working with patches of patches. I'm currently working through the patch set starting at the top (my patch tool was unhappy with 002-sync-bitops), working down my todo list. bobo@linux:~/paravirt> hg status M 002-sync-bitops.patch M 003-remove-ring0-assumptions.patch Thanks, Zach

Hi Sir, I have a question regarding the security of Xen. What are the security threats in with Intel VT-x. Thanks, Praveen Kushwaha ________________________________________________________________________ _____________________ NEC HCL System Technologies Ltd., 4th Floor, Tower B, Logix Techno Park, Noida | Tel: 120 436 6777 Extn 748

I''ve been trying to virtualize SCO OpenServer 5.0.6 for various reasons, and found that the Xensource 4.x doesn''t support it, nor does the open source Xen 3.x in any of the environments I''ve tried. It works on VMware, but for various reasons I prefer to use Xen on my Dom0. (I like open source, and the base OS for the commercial reasons is much, much more recent, and

This patch removes the __init modifier from an extern function declaration in acpi.h. Besides not being strictly needed, it requires the inclusion of linux/init.h, which is usually not even included directly, increasing header mess by a lot. Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> --- include/asm-x86/acpi.h | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)

This patch removes the __init modifier from an extern function declaration in acpi.h. Besides not being strictly needed, it requires the inclusion of linux/init.h, which is usually not even included directly, increasing header mess by a lot. Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> --- include/asm-x86/acpi.h | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)

I want to set CR0 in a module. It is ok on linux kernel 2.6.18-164_x86_64 (kernel of rhel 5.4). But if the kernel is 2.6.18-164xen_x86_64, the system reboot when set CR0. I think maybe because the ring of dom0 is not ring0. Thanks. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel

In a virtualized environment running Xen or VMware, can the guest operating systems utilize hardware crypto acceleration such as the "PadLock" AES acceleration built into VIA CPUs? (Wasn't able to find this info in any of ~400 Google hits, so I'm shooting it out a bit to let as many as possible benefit from the answer.)

In a virtualized environment running Xen or VMware, can the guest operating systems utilize hardware crypto acceleration such as the "PadLock" AES acceleration built into VIA CPUs? (Wasn't able to find this info in any of ~400 Google hits, so I'm shooting it out a bit to let as many as possible benefit from the answer.)

In a virtualized environment running Xen or VMware, can the guest operating systems utilize hardware crypto acceleration such as the "PadLock" AES acceleration built into VIA CPUs? (Wasn't able to find this info in any of ~400 Google hits, so I'm shooting it out a bit to let as many as possible benefit from the answer.)

...\ +({ \ + unsigned long *__ptr = (unsigned long *)(info); \ + (unsigned long)(&__ptr[THREAD_SIZE_LONGS]); \ +}) + +/* + * The below -8 is to reserve 8 bytes on top of the ring0 stack. + * This is necessary to guarantee that the entire "struct pt_regs" + * is accessable even if the CPU haven't stored the SS/ESP registers + * on the stack (interrupt gate does not save these registers + * when switching to the same priv ring). + * Therefore beware: accessing th...

...\ +({ \ + unsigned long *__ptr = (unsigned long *)(info); \ + (unsigned long)(&__ptr[THREAD_SIZE_LONGS]); \ +}) + +/* + * The below -8 is to reserve 8 bytes on top of the ring0 stack. + * This is necessary to guarantee that the entire "struct pt_regs" + * is accessable even if the CPU haven't stored the SS/ESP registers + * on the stack (interrupt gate does not save these registers + * when switching to the same priv ring). + * Therefore beware: accessing th...

Looks to me like the first series of patches should be OK to post now. I propose that: 001-apply-to-page-range.patch 001a-reboot-use-struct.patch 002-sync-bitops.patch 003-remove-ring0-assumptions.patch 004-abstract-asm.patch 005-cpuid-cleanup.patch unfix-fixmap.patch fixmap-bootparam.patch remove-read-hazard-from-cow.patch pte-clear-not-present.patch pgd-free-mm.patch notes-segment.patch are all good candidates for posting. I just went through a...

...ode1.example.tld node2 192.168.10.9 node2.example.tld node2 192.168.11.8 node1hb.example.tld node1hb 192.168.11.9 node2hb.example.tld node2hb (node1 and node2 are the "reachable" IPs and totem ring1. node1hb and node2hb form a direct connection via crossover cable for DRBD and totem ring0.)