search for: paravitu

With virt_spin_lock() being guarded by a static key the bare metal case can be optimized by patching the call away completely. In case a kernel running as a guest it can decide whether to use paravitualized spinlocks, the current fallback to the unfair test-and-set scheme, or to mimic the bare metal behavior. V3: - remove test for hypervisor environment from virt_spin_lock(9 as suggested by Waiman Long V2: - use static key instead of making virt_spin_lock() a pvops function Juergen Gross (2...

With virt_spin_lock() being guarded by a static key the bare metal case can be optimized by patching the call away completely. In case a kernel running as a guest it can decide whether to use paravitualized spinlocks, the current fallback to the unfair test-and-set scheme, or to mimic the bare metal behavior. V3: - remove test for hypervisor environment from virt_spin_lock(9 as suggested by Waiman Long V2: - use static key instead of making virt_spin_lock() a pvops function Juergen Gross (2...

...ce are not a limiting factor - I understand that the results I'm seeing are typical without running paravirtualized drivers in Windows. Just wanted to ask what the options are to get things going faster. I believe the choices are:- - Pay the dollars for a RedHat subscription which includes paravitualized drives for Windows - Install the LGPL PV drivers (don't want to do this, these are production machines and even up to a few months ago I'm seeing reports of VM corruption in the list. It would appear that the LGPL PV drivers are not at production standard yet) - Pay for an alte...

Hello everyone, I''m studying XEN these days, and totally a newbie for XEN world. Recently, I''m assigned to move our OS to run on XEN, I means, paravitualization. I know a bit about XEN technique, and I tried to look into Linux code, but it seems too many threads to get understood it ... Now, I have no idea how to proceed my project... Can anyone give some advice? Any suggestion from you will be greatly appreciated! Thank you in advance! Sean _...

Ping? On 06/09/17 19:36, Juergen Gross wrote: > With virt_spin_lock() being guarded by a static key the bare metal case > can be optimized by patching the call away completely. In case a kernel > running as a guest it can decide whether to use paravitualized > spinlocks, the current fallback to the unfair test-and-set scheme, or > to mimic the bare metal behavior. > > V3: > - remove test for hypervisor environment from virt_spin_lock(9 as > suggested by Waiman Long > > V2: > - use static key instead of making virt_s...

Hello all, I don''t know if it is a silly question but I am really unsure. I informed myself about the OpenBuildService project which was initialized by OpenSUSE. Now I am really interested in setting up an OpenBuildService VM where I can package some programs and so on for example own software and software I wan''t to use on a few systems which have for example newer versions

HW = HPQ DC7700 DuoCore 1.8GHz, 4 x 2GB RAM, 1 x 1TB SATA (AHCI) OS = CentOS-5.2 ix_64 (xen) I am experimenting with Xen and with virtual machines in general for the first time. In consequence I have many questions. However, the one that I wish answered at the moment is simple: Given a DVD containing the CentOS-5.2_Final (i386) distribution mounted at /media/CentOS_5.2_Final on Dom0, what

Hi, We''ve been using Amazon EC2 a fair bit. We''ve discovered that to run a proprietary, commerical bioinformatics piece of software that is liscenced by physical SOCKET instead of cores, we needed to use a virtualization technology that converts multiple cores into a single socket. (This proprietary software will allow us to use up to 4 cores per physical socket, so

Hi there, I have a Dell T3400 Workstation with CentOS5.1 as dom0. I have hidden a network interface in dom0 to pass it to domU. The domU can come up with the NIC when it''s OS is CentOS5.1 or RHEL5. But when it comes to RedHat4.5 , the NIC can not be found. As I type the command "lspci" in RHEL4.5 domU, it returned: pcilib: Cannot open /proc/bus/pci

Protected Virtualisation protects the memory of the guest and do not allow a the host to access all of its memory. Let's refuse a VIRTIO device which does not use IOMMU protected access. Signed-off-by: Pierre Morel <pmorel at linux.ibm.com> --- drivers/s390/virtio/virtio_ccw.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/s390/virtio/virtio_ccw.c

Protected Virtualisation protects the memory of the guest and do not allow a the host to access all of its memory. Let's refuse a VIRTIO device which does not use IOMMU protected access. Signed-off-by: Pierre Morel <pmorel at linux.ibm.com> --- drivers/s390/virtio/virtio_ccw.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/s390/virtio/virtio_ccw.c

With virt_spin_lock() being guarded by a static key the bare metal case can be optimized by patching the call away completely. In case a kernel running as a guest it can decide whether to use paravitualized spinlocks, the current fallback to the unfair test-and-set scheme, or to mimic the bare metal behavior. V2: - use static key instead of making virt_spin_lock() a pvops function Juergen Gross (2): paravirt/locks: use new static key for controlling call of virt_spin_lock() paravirt,xe...

With virt_spin_lock() being guarded by a static key the bare metal case can be optimized by patching the call away completely. In case a kernel running as a guest it can decide whether to use paravitualized spinlocks, the current fallback to the unfair test-and-set scheme, or to mimic the bare metal behavior. V2: - use static key instead of making virt_spin_lock() a pvops function Juergen Gross (2): paravirt/locks: use new static key for controlling call of virt_spin_lock() paravirt,xe...

With virt_spin_lock() being a pvops function the bare metal case can be optimized by patching the call away completely. In case a kernel running as a guest it can decide whether to use paravitualized spinlocks, the current fallback to the unfair test-and-set scheme, or to mimic the bare metal behavior. Juergen Gross (4): paravirt: add generic _paravirt_false() function paravirt: switch vcpu_is_preempted to use _paravirt_false() on bare metal paravirt: add virt_spin_lock pvops f...

With virt_spin_lock() being a pvops function the bare metal case can be optimized by patching the call away completely. In case a kernel running as a guest it can decide whether to use paravitualized spinlocks, the current fallback to the unfair test-and-set scheme, or to mimic the bare metal behavior. Juergen Gross (4): paravirt: add generic _paravirt_false() function paravirt: switch vcpu_is_preempted to use _paravirt_false() on bare metal paravirt: add virt_spin_lock pvops f...

Hi Folks, I find myself trying to expand a 2-node high-availability cluster from to a 4-node cluster. I'm running Xen virtualization, and currently using DRBD to mirror data, and pacemaker to failover cleanly. The thing is, I'm trying to add 2 nodes to the cluster, and DRBD doesn't scale. Also, as a function of rackspace limits, and the hardware at hand, I can't separate