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From: Rob Landley <rlandley at parallels.com> Going indirect for only two buffers isn't likely to be a performance win because the kmalloc/kfree overhead for the indirect block can't be cheaper than one extra linked list traversal. Properly "tuning" the threshold would probably be workload-...

From: Rob Landley <rlandley at parallels.com> Going indirect for only two buffers isn't likely to be a performance win because the kmalloc/kfree overhead for the indirect block can't be cheaper than one extra linked list traversal. Properly "tuning" the threshold would probably be workload-...

This series forms the kvm host part of paravirtual spinlock based against kvm tree. Please refer to https://lkml.org/lkml/2013/8/9/265 for kvm guest and Xen, x86 part merged to -tip spinlocks. Please note that: kvm uapi: Add KICK_CPU and PV_UNHALT definition to uapi is a common patch for both guest and host. Changes since V12: fold the patch 3 into patch 2 for bisection. (Eric Northup)

This series forms the kvm host part of paravirtual spinlock based against kvm tree. Please refer to https://lkml.org/lkml/2013/8/9/265 for kvm guest and Xen, x86 part merged to -tip spinlocks. Please note that: kvm uapi: Add KICK_CPU and PV_UNHALT definition to uapi is a common patch for both guest and host. Changes since V12: fold the patch 3 into patch 2 for bisection. (Eric Northup)

KVM_HC_KICK_CPU hypercall added to wakeup halted vcpu in paravirtual spinlock enabled guest. KVM_FEATURE_PV_UNHALT enables guest to check whether pv spinlock can be enabled in guest. Thanks Vatsa for rewriting KVM_HC_KICK_CPU Cc: Rob Landley <rob at landley.net> Signed-off-by: Srivatsa Vaddagiri <vatsa at linux.vnet.ibm.com> Signed-off-by: Raghavendra K T <raghavendra.kt at linux.vnet.ibm.com> Acked-by: Gleb Natapov <gleb at redhat.com> Acked-by: Ingo Molnar <mingo at kernel.org> --- Documentation/virtual...

Hello! Okay i tried again with only staticly linked busybox: offlinehacker:~/ $ /home/offlinehacker/busybox/busybox BusyBox v1.17.1 (Debian 1:1.17.1-8) multi-call binary. Copyright (C) 1998-2009 Erik Andersen, Rob Landley, Denys Vlasenko and others. Licensed under GPLv2. See source distribution for full notice. .... Again my id: uid=499(offlinehacker) gid=100(users) groups=100(users),1(wheel),57(networkmanager) My rootfs tree(/home/offlinehacker/busybox): busybox ├── [offlineh users ] busybox └── [offlineh user...

...PM, Jaka Hudoklin wrote: > > Hello! > > > > Okay i tried again with only staticly linked busybox: > > offlinehacker:~/ $ /home/offlinehacker/busybox/busybox > > BusyBox v1.17.1 (Debian 1:1.17.1-8) multi-call binary. > > Copyright (C) 1998-2009 Erik Andersen, Rob Landley, Denys Vlasenko > > and others. Licensed under GPLv2. > > See source distribution for full notice. > > .... > > > > Again my id: > > uid=499(offlinehacker) gid=100(users) > groups=100(users),1(wheel),57(networkmanager) > > > > My rootfs tree(/home/...

...obes_functions to within_kprobe_blacklist and it returns a bool value istead of an error. Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt at hitachi.com> Cc: Ananth N Mavinakayanahalli <ananth at in.ibm.com> Cc: "David S. Miller" <davem at davemloft.net> Cc: Rob Landley <rob at landley.net> Cc: Jeremy Fitzhardinge <jeremy at goop.org> Cc: Chris Wright <chrisw at sous-sol.org> Cc: Alok Kataria <akataria at vmware.com> Cc: Rusty Russell <rusty at rustcorp.com.au> Cc: Thomas Gleixner <tglx at linutronix.de> Cc: Ingo Molnar <ming...

On 09/06/2013 07:32 PM, Jaka Hudoklin wrote: > Hello! > > Okay i tried again with only staticly linked busybox: > offlinehacker:~/ $ /home/offlinehacker/busybox/busybox > BusyBox v1.17.1 (Debian 1:1.17.1-8) multi-call binary. > Copyright (C) 1998-2009 Erik Andersen, Rob Landley, Denys Vlasenko > and others. Licensed under GPLv2. > See source distribution for full notice. > .... > > Again my id: > uid=499(offlinehacker) gid=100(users) groups=100(users),1(wheel),57(networkmanager) > > My rootfs tree(/home/offlinehacker/busybox): > busybox > ├...

...r program, or other error In some cases useful info is found in syslog - try dmesg | tail or so # mount -t 9p -o trans=virtio /mnt/SASInstaller /mnt/SASInstaller The page you referenced also mentions using -oversion=9p2000.L. There is some additional info on the versions at http://landley.net/kdocs/Documentation/filesystems/9p.txt; that page says .L is the default, while http://wiki.qemu.org/Documentation/9psetup#Starting_the_Guest_using_libvirt says it's .U. I don't know how to tell which I ended up with. Thanks for the pointer. Ross _____________________________________...

...: >> > Hello! >> > >> > Okay i tried again with only staticly linked busybox: >> > offlinehacker:~/ $ /home/offlinehacker/busybox/busybox >> > BusyBox v1.17.1 (Debian 1:1.17.1-8) multi-call binary. >> > Copyright (C) 1998-2009 Erik Andersen, Rob Landley, Denys Vlasenko >> > and others. Licensed under GPLv2. >> > See source distribution for full notice. >> > .... >> > >> > Again my id: >> > uid=499(offlinehacker) gid=100(users) >> groups=100(users),1(wheel),57(networkmanager) >> >...

...ka Savola "Tell me of difficulties surmounted, Netcore Oy not those you stumble over and fall" Systems. Networks. Security. -- Robert Jordan: A Crown of Swords ---------- Forwarded message ---------- Date: Mon, 30 Apr 2001 06:39:23 -0700 (PDT) From: Rob Landley <telomerase at yahoo.com> To: pekkas at netcore.fi Subject: ssh hang. (Help?) [ snip typical sleep &; exit scenario ] Another fun way to hang ssh is to try to contact a host that's down. It makes 4 attempts, each of which takes about 20 minutes to time out on a host that's rou...

Hello! I'm testing user namespaces and I have quite some problem getting them to work. First of all, I have user namespaces support enabled in kernel: offlinehacker:~/ $ uname -r 3.10.10 offlinehacker:~/ $ ls /proc/self/ns/ ipc@ mnt@ net@ pid@ user@ uts@ I created simple ubuntu rootfs and when I start container without idmap, so without user namespace mappings, it works just fine:

Currently the blacklist is maintained by hand in kprobes.c which is separated from the function definition and is hard to catch up the kernel update. To solve this issue, I've tried to implement new NOKPROBE_SYMBOL() macro for making kprobe blacklist at build time. Since the NOKPROBE_SYMBOL() macros can be placed right after the function is defined, it is easy to maintain. This series

Currently the blacklist is maintained by hand in kprobes.c which is separated from the function definition and is hard to catch up the kernel update. To solve this issue, I've tried to implement new NOKPROBE_SYMBOL() macro for making kprobe blacklist at build time. Since the NOKPROBE_SYMBOL() macros can be placed right after the function is defined, it is easy to maintain. This series

Hi, Here is the version 3 of NOKPORBE_SYMBOL series. Currently the blacklist is maintained by hand in kprobes.c which is separated from the function definition and is hard to catch up the kernel update. To solve this issue, I've introduced NOKPROBE_SYMBOL() macro for making kprobe blacklist at build time. Since the NOKPROBE_SYMBOL() macros can be placed right after the function is defined

Hi, Here is the version 3 of NOKPORBE_SYMBOL series. Currently the blacklist is maintained by hand in kprobes.c which is separated from the function definition and is hard to catch up the kernel update. To solve this issue, I've introduced NOKPROBE_SYMBOL() macro for making kprobe blacklist at build time. Since the NOKPROBE_SYMBOL() macros can be placed right after the function is defined

I see many tests that are prefixed with "requires: shell". A quick search over the codebase shows 101 tests that contain this directive. This basically means there are 101 tests that say "I don't support running on Windows". I would like to get this number to 0. Ironically, many of these tests can be made to run on Windows simply by removing the requires: shell line.

...Removed CAP_PV_UNHALT since it is redundant (Avi). But note that we need newer qemu which uses KVM_GET_SUPPORTED_CPUID ioctl. - Rewrite GET_MP_STATE condition (Avi) - Make pv_unhalt = bool (Avi) - Move out reset pv_unhalt code to vcpu_run from vcpu_block (Gleb) - Documentation changes (Rob Landley) - Have a printk to recognize that paravirt spinlock is enabled (Nikunj) - Move out kick hypercall out of CONFIG_PARAVIRT_SPINLOCK now so that it can be used for other optimizations such as flush_tlb_ipi_others etc. (Nikunj) Ticket locks have an inherent problem in a virtualized case, bec...

...Removed CAP_PV_UNHALT since it is redundant (Avi). But note that we need newer qemu which uses KVM_GET_SUPPORTED_CPUID ioctl. - Rewrite GET_MP_STATE condition (Avi) - Make pv_unhalt = bool (Avi) - Move out reset pv_unhalt code to vcpu_run from vcpu_block (Gleb) - Documentation changes (Rob Landley) - Have a printk to recognize that paravirt spinlock is enabled (Nikunj) - Move out kick hypercall out of CONFIG_PARAVIRT_SPINLOCK now so that it can be used for other optimizations such as flush_tlb_ipi_others etc. (Nikunj) Ticket locks have an inherent problem in a virtualized case, bec...